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Oscilloscope and
Agilent 54621D/22D
Mixed-Signal Oscilloscope
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Service Guide
Publication Number 54622-97037 December 2002
For Safety Information, Warranties, and Regulatory information, see the pages at the end of this book. © Copyright Agilent Technologies 2000, 2002 All Rights Reserved
Agilent 54621A/22A/24A Oscilloscope and Agilent 54621D/22D Mixed-Signal Oscilloscope
The Oscilloscope At a Glance
Choose from a variety of oscilloscopes for capturing long, non-repeating signals with 200 MSa/s sample rate and 2 MBytes of MegaZoom deep memory per channel. · Agilent 54621A - 2-channel, 60-MHz bandwidth · Agilent 54621D - 2-channel +16 logic channels, 60MHz bandwidth · Agilent 54622A - 2-channel, 100-MHz bandwidth · Agilent 54622D - 2-channel +16 logic channels, 100-MHz bandwidth · Agilent 54624A - 4-channel, 100-MHz bandwidth Display shows current input signals · All analog and digital (54621D/22D) channels displayed in main and delayed mode · Indicators for channel, time base, digital (54621D/ 22D) channel activity, trigger and acquisition status · Softkey labels · Measurement results Digital channel controls select, position, and label inputs (54621D/22D) · Turn channels on or off individually or in groups of 8 · Rearrange order of channels to group related signals · Create and display labels to identify channels Run control keys begin and end data acquisition · Run/Stop starts and stops continuous acquisitions · Single performs one acquisition · Infinite persistence accumulates and displays the results of multiple acquisitions Horizontal Controls select sweep speed and delay parameters · Sweep speeds from 5 ns/div to 50 ns/div · Delay control moves waveform display to point of interest · Delayed mode and delay allow zooming in to show a portion of waveform in detail (split screen)
Trigger keys define what data the oscilloscope will trigger on · Source key allows conventional oscilloscope triggering · Modes include Edge, Pulse Width, Pattern, CAN, Duration, I2C, LIN, Sequence, SPI, TV, and USB triggering General controls measure, save and restore results, and configure the oscilloscope · Waveform math including FFT, subtract, multiply, integrate, and differentiate · Use Quick Meas to make automatic measurements Integrated counter included with Quick Meas. · Use cursors to make manual measurements · Save or recall measurement configurations or previous results · Autoscale performs simple one-button setup of the oscilloscope Softkeys extend the functionality of command keys Select measurement types, operating modes, trigger specifications, label data, and more Digital channel inputs through a flexible probing system (54621D/22D) · Sixteen channels through a dual 8-channel cable with micro-clips · Set logic levels as TTL, CMOS, ECL, or to a userdefinable voltage Utilities · Dedicated parallel printer port, controller operation, floppy disk storage Built in Quick Help system · Press and hold any key front-panel key or softkey to get help in 11 languages.
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In This Book
This book provides the service information for the Agilent 54621A/22A/24A Oscilloscope and the Agilent 54621D/22D Mixed-Signal Oscilloscope. This manual is divided into these chapters: Chapter 1 provides general information and specifications. Chapter 2 shows you how to prepare the oscilloscope for use. Chapter 3 gives performance tests. Chapter 4 covers calibration and adjustment procedures. Chapter 5 provides troubleshooting information. Chapter 6 gives the procedures and techniques for replacing assemblies and other parts. Chapter 7 includes a list of replaceable parts, part ordering information, and shipping information. At the back of the book you will find Safety information, Warranties, and Regulatory information.
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Contents
1 General Information
To inspect package contents 1-3 To inspect options and accessories Performance Characteristics 1-9 1-6
2 Preparing the Oscilloscope for Use Setting up the Oscilloscope 2-3
To adjust the handle 2-4 To power-on the oscilloscope 2-5 To adjust the display intensity 2-6 To connect the oscilloscope probes 2-7 To compensate your probe 2-7 To use the digital probes (mixed-signal oscilloscope only) To connect a printer 2-12 To connect an RS-232 cable 2-12 To verify basic oscilloscope operation 2-13
2-8
Getting started using the oscilloscope interface Using Quick Help 2-16
2-14
Selecting a language for Quick Help when the oscilloscope starts up 2-16 Selecting a language for Quick Help after you have been operating the oscilloscope 2-17 Loading a language from floppy disk 2-18
Cleaning the oscilloscope 3 Testing Performance
2-19
List of Test Equipment 3-3 To construct the test connector 3-4 To test the 54621D/22D Oscilloscope digital channels 3-5 To verify threshold accuracy 3-6 To verify voltage measurement accuracy 3-10 To verify bandwidth 3-13 To verify horizontal Dt and 1/Dt accuracy 3-15 To verify trigger sensitivity 3-17 Agilent 54622A/22D/24A Performance Test Record 3-20 Agilent 54621A/21D Performance Test Record 3-21
Contents-1
Contents
4 Calibrating and Adjusting
To adjust the power supply 4-4 To perform User Cal 4-7 To adjust the oscilloscope display
4-8
5 Troubleshooting Solving General Problems with the Oscilloscopes
If there is no trace display 5-3 If the trace display is unusual or unexpected If you cannot see a channel 5-5 5-4
5-3
Troubleshooting the Oscilloscope
5-6
To construct your own dummy load 5-7 To check out the oscilloscope 5-8 To check the Low Voltage Power Supply 5-11 To run the internal self-tests 5-13
6 Replacing Assemblies
To remove the cabinet 6-4 To remove the fan 6-5 To remove the floppy drive 6-6 To remove the front panel 6-7 To remove the display 6-8 To remove the system board 6-10 To remove the power supply 6-12 To remove the keyboard assembly 6-15 To remove the handle 6-16
7 Replaceable Parts
To order a replacement part 7-3
Contents-2
1
General Information
General Information
This chapter lists general information for the Agilent 54620-series Oscilloscopes. It also includes performance characteristics and specifications for the oscilloscopes.
1-2
General Information
To inspect package contents
Inspect the shipping container for damage. If your shipping container appears to be damaged, keep the shipping container or cushioning material until you have inspected the contents of the shipment for completeness and have checked the oscilloscope mechanically and electrically. Verify that you received the following items and any optional accessories in the oscilloscope packaging (see figure following). · 54620-Series Oscilloscope (54621A, 21D, 22A, 22D, or 24A) · 10074C 10:1 150 MHz passive probes with ID: (2) for 54621A, 21D, 22A, or 22D oscilloscopes (4) for 54624A oscilloscope · 54620-68701 digital probe kit (for 54621D or 22D) · Accessory pouch and front-panel cover (standard for 54622A, 22D, and 24A) (optional on 54621A and 21D; order N2726A) · Power cord (see table 1-3) · IntuiLink for 54600-series Oscilloscopes software and RS-232 cable (for 54622A, 22D, or 24A). IntuiLink is a Windows application that makes it very easy for you to download images, waveform data, or oscilloscope setups from the oscilloscope to your pc using either Microsoft Word or Microsoft Excel. After installation of IntuiLink, a tool bar in these Microsoft applications will make connection and data transfer from the oscilloscope very simple. IntuiLink software is available free on the web at: www.agilent.com/find/5462xsw RS-232 cable may be ordered separately, part number 34398A If anything is missing, contact your nearest Agilent Sales Office. If the shipment was damaged, contact the carrier, then contact the nearest Agilent Sales Office.
1-3
General Information
· Agilent IntuiLink Data Capture (for 54622A, 22D, or 24A) IntuiLink Data Capture is a standalone program for downloading waveform data from the oscilloscopes to your PC via GPIB or RS-232 interface. It provides the capability to transfer deep memory data out of the oscilloscope, allowing up to 4MB (scope channels) and 8MB (logic channels). The IntuiLink for 54600-Series limits the size of acquisition data available to a maximum of 2,000 points regardless of actual number of acquisition points on the screen. With the IntuiLink Data Capture, the amount of points transferred will be the actual number of acquisition points currently displayed or you may select the number of points to download. It provides the following functionality: · Download waveform data and display the data as a simple chart · Save the data as binary or text files · Copy the chart and a selected portion of the data to the clipboard. The maximum data saved to the clipboard is 50,000 point · Load saved waveform data back into the application IntuiLink Data Capture software is available free on the web at: www.agilent.com/find/5462xsw RS-232 cable may be ordered separately, part number 34398A Inspect the oscilloscope · If there is mechanical damage or a defect, or if the oscilloscope does not operate properly or does not pass the performance tests listed in the Service Guide, notify your Agilent Sales Office. · If the shipping container is damaged, or the cushioning materials show signs of stress, notify the carrier and your Agilent Sales Office. Keep the shipping materials for the carrier's inspection. The Agilent Sales Office will arrange for repair or replacement at Agilent's option, without waiting for claim settlement.
1-4
General Information
Figure 1-1
54620-Series Oscilloscope 54620-68701 digital probe kit* 54620-61801 16-channel cable***
Ä
5959-9334 2" Probe ground lead (qty 5)
Accessories pouch and front-panel cover**
5090-4833 Grabber (qty 20)
Power cord
IntuiLink for 54600-series software, Data Capture software and serial cable**
10074C Probes
s
s1
* 54621D /22D only ** 54622A/22D/24A only *** The following additional replacement parts (not included) are available for the digital cable: 5959-9333 replacement probe leads (qty 5) 5959-9335 replacement pod grounds (qty 5) 01650-94309 package of probe labels Package contents for 54620-Series Oscilloscopes
1-5
General Information
To inspect options and accessories
Verify that you received the options and accessories you ordered and that none were damaged. If anything is missing, contact your nearest Agilent Sales Office. If the shipment was damaged, or the cushioning materials show signs of stress, notify the carrier and your Agilent Sales Office. Some of the options and accessories available for the 54620-Series Oscilloscopes are listed in tables 1-1 am 1-2. Contact your Agilent Sales Office for a complete list of options and accessories.
Table 1-1
Options available
Option 003 Description Shielding Option for use in severe environments or with sensitive devices under testshields both ways (in and out): RS-03 magnetic interface shielding added to CRT, and RE-02 display shield added to CRT to reduce radiated interference. Rackmount kit (same as Agilent 1186A) ANSI Z540 compliant calibration service See table 1-3 for power cord options
1CM A6J
1-6
General Information
Table 1-2
Accessories available
Model 01650-61607 54620-68701 1146A 1183A 1185A 1186A 10070C 10072A 10073C 10075A 10076A 10100C 10833A 34398A E2613B E2614A E2615B E2616A E2643A E2644A N2726A N2727A N2728A N2757A N2758A N2771A N2772A N2773A N2774A N2775A Description 16:16 logic cable and terminator (for use with 54621D/22D) 16:2 x 8 logic input probe assembly (shipped standard with 54621D/22D) 100 kHz current probe, ac/dc Testmobile scope cart Carrying case Rackmount kit 1:1 passive probe with ID Fine-pitch probe kit 10:1 500 MHz probe with ID 0.5 mm IC clip kit 100:1, 4 kV 250 MHz probe with ID 50 termination GPIB cable, 1 m long RS-232 cable (standard with 100 MHz models) 0.5 mm Wedge probe adapter, 3-signal, qty 2 0.5 mm Wedge probe adapter, 8-signal, qty 1 0.65 mm Wedge probe adapter, 3-signal, qty 2 0.65 mm Wedge probe adapter, 8-signal, qty 1 0.5 mm Wedge probe adapter, 16-signal, qty 1 0.65 mm Wedge probe adapter, 16-signal, qty 1 Accessory pouch and front-panel cover (standard with 100 MHz models) Thermal printer and pouch 10 rolls of thermal printer paper GPIB Interface Module CAN Trigger Module 1000:1, 15 kV, 50 MHz high voltage probe 20 MHz differential probe Differential probe power supply 50 MHz current probe, ac/dc Power supply for N2774A
1-7
General Information
Table 1-3. Power Cords
Plug Type Opt 900 (U.K.) Cable Part Number 8120-1703 Plug Type Opt 918 (Japan) Cable Part Number 8120-4754
Opt 901 (Australia)
8120-0696
Opt 919 (Israel)
8120-6799
Opt 902 (Europe)
8120-1692
Opt 920 (Argentina)
8120-6871
Opt 903 (U.S.A.)
8120-1521
Opt 921 (Chile)
8120-6979
Opt 906 (Switzerland)
8120-2296
Opt 922 (China)
8120-8377
Opt 912 (Denmark)
8120-2957
Opt 927 (Thailand)
8120-8871
Opt 917 (Africa)
8120-4600
1-8
General Information Acquisition: Analog Channels
Performance Characteristics
* Denotes Warranted Specifications, all others are typical. Specifications are valid after a 30-minute warm-up period and ±10 °C from firmware calibration temperature.
Acquisition: Analog Channels
Max Sample rate Max Memory Depth Vertical Resolution Peak Detection Averages High Resolution Mode Filter: 200 MSa/s 4 MB interleaved, 2 MB each channel 8 bits 5 ns selectable from 2, 4, 8, 16, 32, 64 ...to 16383 12 bits of resolution when 500 us/div, average mode with average = 1 Sinx/x interpolation (single shot BW = sample rate/4 or bandwidth of scope, whichever is less) with vectors on.
Acquisition: Digital Channels (on 54621D and 54622D only)
Max Sample Rate 400 MSa/s Max Memory Depth 8 MB Vertical Resolution 1 bit Glitch Detection (min pulse width) 5 ns
1-9
General Information Vertical System: Analog Channels
* Denotes Warranted Specifications, all others are typical. Specifications are valid after a 30-minute warm-up period and ±10 °C from firmware calibration temperature.
Vertical System: Analog Channels
Analog channels Bandwidth (-3dB)* ac coupled Calculated rise time (= 0.35/bandwidth) Single Shot Bandwidth Range1 Maximum Input 54621A/21D, 54622A/22D: Ch1 and 2 simultaneous acquisition 54624A: Ch 1, 2, 3, and 4 simultaneous acquisition 54621A/22D: dc to 60 MHz 54622A/22D/24A: dc to 100 MHz 54621A/21D: 3.5 Hz to 60 MHz 54622A/22D/24A: 3.5 Hz to 100 MHz 54621A/22D: ~5.8 ns 54622A/22D/24A: ~3.5 ns 50 MHz 1 mV/div to 5 V/div CAT I 300 Vrms, 400 Vpk CAT II 100 Vrms, 400 Vpk with 10074C 10:1 probe: CAT I 500 Vpk, CAT II 400 Vpk ±5 V on ranges <10 mV/div ±25 V on ranges 10 mV/div to 199 mV/div ±100 V on ranges 200 mV/div Lesser of ±8 div or ±32 V 1 M ±1% ~ 14 pF ac, dc, ground ~ 20 MHz selectable dc to 20 MHz > 40 dB 20 MHz to max bandwidth > 30 dB 10:1 10074C shipped standard for each analog channel Auto probe sense
Offset Range
Dynamic Range Input Resistance Input Capacitance Coupling BW Limit Channel-to-Channel Isolation (with channels at same V/div) Probes Probe ID (Agilent/HP & Tek Compatible)
1
1 mV/div is a magnification of 2 mV/div setting. For vertical accuracy calculations, use full scale of 16 mV for 1 mV/div sensitivity setting.
1-10
General Information Vertical System: Analog Channels (continued)
* Denotes Warranted Specifications, all others are typical. Specifications are valid after a 30-minute warm-up period and ±10 °C from firmware calibration temperature.
Vertical System: Analog Channels (continued)
ESD Tolerance Noise Peak-to-Peak Common Mode Rejection Ratio DC Vertical Gain Accuracy*1 DC Vertical Offset Accuracy Single Cursor Accuracy1 ±2 kV 2% full scale or 1 mV, whichever is greater 20 dB @ 50 MHz ±2.0% full scale < 200 mV/div: ±0.1 div ±1.0 mV ±0.5% offset 200 mV/div: ±0.1 div ±1.0 mV ±1.5% offset value ±{DC Vertical Gain Accuracy + DC Vertical Offset Accuracy + 0.2% full scale (~1/2 LSB) } Example: For 50 mV signal, scope set to 10 mV/div (80 mV full scale), 5 mV offset, accuracy = ±{2.0%(80mV) + 0.1 (10 mV) + 1.0 mV + 0.5% (5 mV) + 0.2%(80 mV)} = ± 3.78 mV ±{DC Vertical Gain Accuracy + 0.4% full scale (~1 LSB)} Example: For 50 mV signal, scope set to 10 mV/div (80 mV full scale), 5 mV offset, accuracy = ±{2.0%(80 mV) + 0.4%(80 mV)} = ±1.92 mV
Dual Cursor Accuracy*1
1
1 mV/div is a magnification of 2 mV/div setting. For vertical accuracy calculations, use full scale of 16 mV for 1 mV/div sensitivity setting.
Vertical System: Digital Channels (54621D and 54622D only)
Number of Channels Threshold Groupings Threshold Selections User-Defined Threshold Range Maximum Input Voltage Threshold Accuracy* Input Dynamic Range Minimum Input Voltage Swing Input Capacitance Input Resistance Channel-to-Channel Skew 16 Digital labeled D15 D0 Pod 1: D7 - D0 Pod 2: D15 - D8 TTL, CMOS, ECL, user-definable (selectable by pod) ±8.0 V in 10 mV increments ±40 V peak CAT I ±(100 mV + 3% of threshold setting) ±10 V about threshold 500 mV peak-to-peak ~ 8 pF 100 k ±2% at probe tip 2 ns typical, 3 ns maximum
1-11
General Information Horizontal
* Denotes Warranted Specifications, all others are typical. Specifications are valid after a 30-minute warm-up period and ±10 °C from firmware calibration temperature.
Horizontal
Range Resolution Vernier Reference Positions Delay Range Pre-trigger (negative delay) Post-trigger (positive delay) Analog Delta-t Accuracy Same Channel* 5 ns/div to 50 s/div 25 ps 1-2-5 increments when off, 25 minor increments between major settings when on Left, Center, Right Greater of 1 screen width or 10 ms 500 seconds
±0.01% reading ±0.1% screen width ±40 ps Example: for signal with pulse width of 10 us, scope set to 5 us/div (50 us screen width), delta-t accuracy = ±{.01%(10 us) + 0.1% (50 us) + 40 ps} = 51.04 ns ±0.01% reading ±0.1% screen width ±80 ps (non-Vernier settings) ±0.01% reading ±0.1% screen width ±(1 digital sample period, 2.5 or 5 ns based on sample rate of 200/400 MSa/s) Example: for signal with pulse width of 10 us, scope set to 5 us/div (50 us screen width), and single pod active (400 MSa/s), delta-t accuracy = ±{.01%(10 us) + 0.1% (50 us) + 2.5 ns} = 53.5 ns ±0.01% reading ±0.1% screen width ±(1 digital sample period, 2.5 or 5 ns) ±chan-to-chan skew (2 ns typical, 3 ns maximum) 10 ppm 0.025% screen width + 30 ps Main, Delayed, Roll, XY 1.4 V blanks trace (use External trigger) Max bandwidth 1.8 degrees
Channel-to-Channel Digital Delta-t Accuracy Same Channel
Channel-to-Channel Delay Jitter RMS Jitter Modes XY Z blanking Bandwidth Phase error @ 1 MHz
1-12
General Information Trigger System
* Denotes Warranted Specifications, all others are typical. Specifications are valid after a 30-minute warm-up period and ±10 °C from firmware calibration temperature.
Trigger System
Sources: 54621A/22A: Ch 1, 2, line, ext 54621D/22D: Ch 1, 2, line, ext, D15 - D0 54624A: Ch 1, 2, 3, 4, line, ext Auto, Auto level, Triggered (normal), Single ~60 ns to 10 seconds Edge, Pattern, Pulse Width, CAN, Duration, I2C, Sequence, SPI, TV, USB Trigger on a rising or falling edge of any source. Trigger on a pattern of high, low, and don't care levels and a rising or falling edge established across any of the sources. The analog channel's high or low level is defined by that channel's trigger level. Trigger when a positive- or negative-going pulse is less than, greater than, or within a specified range on any of the source channels. Minimum pulse width setting: 5 ns Maximum pulse width setting: 10 s Trigger on CAN (Controller Area Network) version 2.0A and 2.0B signals. It can trigger on the Start of Frame bit of a data frame, a remote transfer request frame, or an overload frame. Trigger on a multi-channel pattern whose time duration is less than a value, greater than a value, greater than a time value with a timeout value, or inside or outside of a set of time values. Minimum duration setting: 5 ns Maximum duration setting: 10 s Trigger on I2C (Inter-IC bus) serial protocol at a start/stop condition, a restart, a missing acknowledge, or user defined frame with address and/or data values. Also trigger on Missing Acknowledge, Restart, EEPROM read, and 10-bit write. Trigger on LIN (Local Interconnect Network) sync break at beginning of message frame. Find event A, trigger on event B, with option to reset on event C or time delay. Trigger on SPI (Serial Peripheral Interface) a data pattern during a specific framing period. Support positive and negative Chip Select framing ad well as clock Idle framing and user-specified number of bits per frame. Trigger on USB (Universal Serial Bus) Start of Packet, End of Packet, Reset Complete, Enter Suspend, or Exit Suspend on the differential USB data lines. USB low speed and high speed are supported. Trigger on any analog channel for NTSC, PAL, PAL-M, or SECAM broadcast standards on either positive or negative composite video signals. Modes supported include Field 1, Field 2, or both, all lines, or any line within a field. Also supports triggering on noninterlaced fields. TV trigger sensitivity: 0.5 division of synch signal. Finds and displays all active analog and digital (for 54621D/54622D) channels, sets edge trigger mode on highest numbered channel, sets vertical sensitivity on analog channels and thresholds on digital channels, time base to display ~1.8 periods. Requires minimum voltage >10 mVpp, 0.5% duty cycle and minimum frequency >50 Hz.
Modes Holdoff Time Selections Edge Pattern
Pulse Width
CAN
Duration
I 2C
LIN Sequence SPI
USB
TV
Autoscale
1-13
General Information Analog Channel Triggering
* Denotes Warranted Specifications, all others are typical. Specifications are valid after a 30-minute warm-up period and ±10 °C from firmware calibration temperature.
Analog Channel Triggering
Range (Internal) Sensitivity* Coupling ±6 div from center screen Greater of 0.35 div or 2.5 mV AC (~3.5 Hz), DC, noise reject, HF reject and LF reject (~ 50 kHz)
Digital (D15 - D0) Channel Triggering (54621D and 5462 2D)
Threshold Range (user-defined) Threshold Accuracy* Predefined Thresholds ±8.0 V in 10 mV increments ±(100 mV + 3% of threshold setting) TTL = 1.4 V, CMOS = 2.5 V, ECL = -1.3 V
External (EXT) Triggering
Input Resistance Input Impedance Maximum Input 1 M ±3% ~ 14 pF CAT I 300 Vrms, 400 Vpk CAT II 100 Vrms, 400 Vpk with 10074C 10:1 probe:CAT I 500 Vpk, CAT II 400 Vpk ±10 V dc to 25 MHz, < 75 mV 25 MHz to max bandwidth, < 150 mV AC (~ 3.5 Hz), DC, noise reject, HF reject and LF reject (~ 50 kHz) Auto probe sense for 54621A/22A
Range Sensitivity Coupling Probe ID (Agilent/HP & Tek Compatible)
1-14
General Information Display System
* Denotes Warranted Specifications, all others are typical. Specifications are valid after a 30-minute warm-up period and ±10 °C from firmware calibration temperature.
Display System
Display Throughput of Analog Channels Resolution Controls 7-inch raster monochrome CRT 25 million gray scale vectors/sec per channel 255 vertical by 1000 horizontal points (waveform area) 32 levels of gray scale Waveform intensity on front panel Vectors on/off; infinite persistence on/off 8 x 10 grid with continuous intensity control Key-specific help in 11 languages displayed by pressing and holding key or softkey of interest Time and date (user setable)
Built-in Help System Real Time Clock
Measurement Features
Automatic Measurements Voltage (analog channels only) Time Measurements are continuously updated Cursors track current measurement Peak-to-Peak, Maximum, Minimum, Average, Amplitude, Top, Base, Overshoot, Preshoot, RMS (DC) Frequency, Period, + Width, - Width, and Duty Cycle on any channels. Rise time, Fall time, X at Max (Time at max volts), X at Min (Time at min volts), Delay, and Phase on analog channels only. Built-in 5-digit frequency counter on any channel. Counts up to 125 MHz Variable by percent and absolute value; 10%, 50%, 90% default for time measurements Manually or automatically placed readout of Horizontal (X, X, 1/X) and Vertical (Y, Y). Additionally digital or analog channels can be displayed as binary or hex values 1-2, 1*2, FFT, differentiate, integrate. Source of FFT: differentiate, integrate, analog channels 1 or 2 (or 3 or 4 for 54624A), 12, 1+2, 1*2
Counter Threshold Definition Cursors
Waveform Math
1-15
General Information FFT
* Denotes Warranted Specifications, all others are typical. Specifications are valid after a 30-minute warm-up period and ±10 °C from firmware calibration temperature.
FFT
Points Source of FFT Window Noise Floor Amplitude Display Frequency Resolution: Maximum Frequency Fixed at 2048 points Analog channels 1 or 2 (or 3 or 4 for 54624A), 1+2, 1-2, 1*2 Rectangular, Flattop, Hanning -70 to -100 dB depending on averaging In dBV 0.097656/(time per div) 102.4/(time per div)
Storage
Save/Recall (non-volatile) Floppy Disk Image formats Data formats Trace/setup formats 3 setups and traces can be saved and recalled internally 3.5" 1.44 MB double density TIF, BMP X and Y (time/voltage) values in CSV format Recalled
I/O
RS-232 (serial) standard port Parallel standard port Printer Compatibility 1 port; XON or DTR; 8 data bits; 1 stop bits; parity=none; 9600, 19200, 38400, 57600 baud rates Printer support HP DeskJet, HP LaserJet with HP PCL 3 or greater compatibility Compatibility black and white @150x150 dpi gray scale @ 600x600 dpi Epsonblack and white @180x180 dpi SeikoDPU-414 black and white Fully programmable with IEEE488.2 compliance Typical GPIB throughput of 20 measurements or twenty 2000-point records per second.
Optional GPIB Interface Module
1-16
General Information General Characteristics
* Denotes Warranted Specifications, all others are typical. Specifications are valid after a 30-minute warm-up period and ±10 °C from firmware calibration temperature.
General Characteristics
Physical: Size Weight Calibrator Output Trigger Out Printer Power Kensington lock 32.26 cm wide x 17.27 cm high x 31.75 cm deep (without handle) 6.35 kgs (14 lbs) Frequency ~1.2 kHz; Amplitude ~5 V 0 to 5 V with 50 source impedance; delay ~ 55 ns 7.2 to 9.2 V, 1 A Connection on rear panel for security
Power Requirements
Line Voltage Range Line Frequency Power Usage 100 - 240 VAC ±10%, CAT II, automatic selection 47 to 440 Hz 100 W max
Environmental Characteristics
Ambient Temperature Humidity Altitude Vibration Shock Pollution degree2 Indoor use only Operating -10 °C to +55 °C Non-operating -51 °C to +71 °C Operating 95% RH at 40 °C for 24 hr Non-operating 90% RH at 65 °C for 24 hr Operating to 4,570 m (15,000 ft) Non-operating to 15,244 m (50,000 ft) HP/Agilent class B1 and MIL-PRF-28800F Class 3 random HP/Agilent class B1 and MIL-PRF-28800F (operating 30 g, 1/2 sine, 11-ms duration, 3 shocks/axis along major axis. Total of 18 shocks) Normally only dry non-conductive pollution occurs. Occasionally a temporary conductivity caused by condensation must be expected. This instrument is rated for indoor use only
1-17
1-18
2
Preparing the Oscilloscope for Use
Preparing the Oscilloscope for Use
To prepare your oscilloscope for use, you need to do the following tasks. After you have completed them, you will be ready to use the oscilloscope. In the following topics you will: · · · · · · · · · · adjust the handle power-on the oscilloscope adjust the display intensity connect the oscilloscope probes connect the digital probes (with 54621D and 54622D) connect a printer connect a RS-232 cable verify basic oscilloscope operation get started using the oscilloscope interface learn how to use Quick Help
This chapter also tells you how to: · clean the oscilloscope
2-2
Setting up the Oscilloscope
After you have done a few basic tasks, you will connect probes to the oscilloscope. The number of probes, and the type of probes that you will use depends on the oscilloscope model that you have.
· When using the Agilent 54621A and 54622A 2-channel Oscilloscopes, and the Agilent 54624A 4-channel Oscilloscope, you will connect and use analog probes to examine analog signals.
Analog channels (2 or 4, depending on the oscilloscope model)
· When using the Agilent 54621D and 54622D Mixed-Signal Oscilloscopes, you will connect and use both analog and digital probes to examine analog and digital signals.
Analog channels (2)
Digital channels (16)
2-3
Preparing the Oscilloscope for Use To adjust the handle
To adjust the handle
1 Grasp the handle pivot points on each side of the instrument and pull the pivot out until it stops.
Agilent
54622D
MIXED SIGNAL OSCILLOSCOPE
CHANNEL
Select
Time/Div
1s 0 15
5 ns
INPUTS
2 Without releasing the pivots, swivel the handle to the desired position. Then release the pivots. Continue pivoting the handle until it clicks into a set position.
2-4
Preparing the Oscilloscope for Use To power-on the oscilloscope
To power-on the oscilloscope
1 Connect the power cord to the rear of the oscilloscope, then to a suitable ac voltage source.
The oscilloscope power supply automatically adjusts for input line voltages in the range 100 to 240 VAC. Therefore, you do not need to adjust the input line voltage setting. The line cord provided is matched to the country of origin. Ensure that you have the correct line cord. See table 1-3
2 Press the power switch.
T rigger out
~5V
Some front panel key lights will come on and the oscilloscope will be operational in about 5 seconds.
2-5
Preparing the Oscilloscope for Use To adjust the display intensity
To adjust the display intensity
The Intensity control is at the lower left corner of the front panel.
· To decrease display intensity, rotate the Intensity control counterclockwise. · To increase display intensity, rotate the Intensity control clockwise.
Dim
Bright
Intensity control
The grid or graticule intensity on the display can be adjusted by pressing the Display key, then turn the Entry knob (labeled on the front panel) to adjust the Grid control.
2-6
Preparing the Oscilloscope for Use To connect the oscilloscope probes
To connect the oscilloscope probes
1 Connect the Agilent 10074C 1.5-meter, 10:1 oscilloscope probe to the analog channel 1 or 2 BNC connector input on the oscilloscope, or channel 1 through channel 4 on the 54624A.
Maximum input voltage for analog inputs: CAT I 300 Vrms, 400 Vpk CAT II 100 Vrms, 400 Vpk with 10074C 10:1 probe: CAT I 500 Vpk, CAT II 400 Vpk
2 Connect the retractable hook tip on the probe tip to the circuit point of interest. Be sure to connect the probe ground lead to a ground point on the circuit.
The probe ground lead is connected to the oscilloscope chassis and the ground wire in the power cord. If you need to connect the ground lead to a point in the circuit that cannot be grounded to power ground, consider using a differential probe.
To compensate your probe
You should compensate you probes to match their characteristics to the oscilloscope. A poorly compenstated probe can introduce measurement errors. To compensate a probe, follow these steps: 1 Connect the probe from channel 1 to the Probe Comp signal on the lower-
right corner of the front panel. 2 Press Autoscale. 3 Use a nonmetallic tool to adjust the trimmer capacitor on the probe for the flattest pulse possible.
Perfectly compensated
Over compensated
Under compensated
comp.cdr
2-7
Preparing the Oscilloscope for Use To use the digital probes (mixed-signal oscilloscope only)
To use the digital probes (mixed-signal oscilloscope only)
1 If you feel it's necessary, turn off the power supply to the circuit under test.
Off
Turning off power to the circuit under test would only prevent damage that might occur if you accidentally short two lines together while connecting probes. You can leave the oscilloscope powered on because no voltage appears at the probes.
2 Connect the digital probe cable to D15 - D0 connector on the front panel of the mixed-signal oscilloscope. The digital probe cable is indexed so you can connect it only one way. You do not need to power-off the oscilloscope.
Use only the Agilent part number 54620-68701 digital probe kit supplied with the mixed-signal oscilloscope.
2-8
Preparing the Oscilloscope for Use To use the digital probes (mixed-signal oscilloscope only)
3 Connect a grabber to one of the probe leads. Be sure to connect the ground lead. (Other probe leads are omitted from the figure for clarity.)
Grabber
4 Connect the grabber to a node in the circuit you want to test.
2-9
Preparing the Oscilloscope for Use To use the digital probes (mixed-signal oscilloscope only)
5 For high-speed signals, connect a ground lead to the probe lead, connect a grabber to the ground lead, and attach the grabber to ground in the circuit under test.
Signal Lead
Ground Lead
Grabber
6 Connect the ground lead on each set of channels, using a probe grabber. The ground lead improves signal fidelity to the instrument, ensuring accurate measurements.
Channel Pod Ground
Circuit Ground
2-10
Preparing the Oscilloscope for Use To use the digital probes (mixed-signal oscilloscope only)
7 Repeat steps 3 through 6 until you have connected all points of interest.
Signals
Ground
8 If you need to remove a probe lead from the cable, insert a paper clip or other small pointed object into the side of the cable assembly, and push to release the latch while pulling out the probe lead.
Replacement parts are available. See the "Replaceable Parts" chapter for details.
2-11
Preparing the Oscilloscope for Use To connect a printer
To connect a printer
The oscilloscope connects to a parallel printer through the Parallel output connector on the rear of the oscilloscope. You will need a parallel printer cable to connect to the printer.
1 Attach the 25-pin small "D" connector to the Parallel output connector on the rear of the oscilloscope. Tighten the thumbscrews on the cable connector to secure the cable. 2 Attach the larger 36-pin "D" connector to the printer. 3 Set up the printer configuration on the oscilloscope.
a Press the Utility key, then press the Print Confg softkey. b Press the Print to: softkey and set the interface to Parallel. c Press the Format softkey and select your printer format from the list. For more information on printer configuration, refer to the "Utilities" chapter in the User's Guide.
To connect an RS-232 cable
The oscilloscope can be connected to a controller or a PC through the RS-232 connector on the rear of the oscilloscope. An RS-232 cable is shipped with each 54622A/22D/24A oscilloscope and may be purchased for the 54621A/21D oscilloscopes.
1 Attach the 9-pin "D" connector on the RS-232 cable to the RS-232 connector on the rear of the oscilloscope. Tighten the thumbscrews on the cable connector to secure the cable 2 Attach the other end of the cable to your controller or pc. 3 Set up the RS-232 configuration on the oscilloscope.
a b c d Press the Utility key, then press the I/O softkey. Press the Controller softkey and select RS-232. Press the Baud softkey and set the baud rate to match your controller or pc. Press the XON DTR softkey and set the handshake to match your controller or pc. For more information on RS-232 configuration, refer to the "Utilities" chapter in the User's Guide.
2-12
Preparing the Oscilloscope for Use To verify basic oscilloscope operation
To verify basic oscilloscope operation
1 Connect an oscilloscope probe to channel 1. 2 Attach the probe to the Probe Comp output on the lower-right side of the front panel of the oscilloscope.
Use a probe retractable hook tip so you do not need to hold the probe.
3 Press the Save/Recall key on the front panel, then press the Default Setup softkey under the display.
The oscilloscope is now configured to its default settings.
4 Press the Autoscale key on the front panel.
You should then see a square wave with peak-to-peak amplitude of about 5 divisions and a period of about 4 divisions as shown below. If you do not see the waveform, ensure your power source is adequate, the oscilloscope is properly powered-on, and the probe is connected securely to the front-panel channel input BNC and to the Probe Comp calibration output.
Verifying Basic Oscilloscope Operation
2-13
Getting started using the oscilloscope interface
When the oscilloscope is first turned on, it performs a self-test, then momentarily shows a startup screen as shown below.
This menu is only accessible when the oscilloscope first starts up.
2-14
Preparing the Oscilloscope for Use To verify basic oscilloscope operation
· Press the Getting Started softkey to view the symbols used in the oscilloscope softkey menus.
Use the Entry knob labeled to adjust the parameter.
Press the softkey to display a pop up with a list of choices. Repeatedly press the softkey until your choice is selected. Use the Entry knob labeled or press the softkey to adjust the parameter. Option is selected and operational. Feature is on. Press the softkey again to turn the feature off. Feature is off. Press the softkey again to turn the feature on. Press the softkey to view the menu. Press the softkey to return to the previous menu. Links you to another menu.
2-15
Using Quick Help
The oscilloscope has a Quick Help system that provides user help for each front-panel key and softkey on the oscilloscope. To view Quick Help information: 1 Press and hold down the key for which you would like to view help. 2 Release the key after reading the message. Releasing the key returns the oscilloscope to the previous state.
Selecting a language for Quick Help when the oscilloscope starts up
When the oscilloscope first powers up, you can press the Language softkey to select a language for viewing Quick Help. Successive press the Language softkey until the desired language in the list selected.
You can also select and load a language later from the Utility Language menu.
2-16
Preparing the Oscilloscope for Use Selecting a language for Quick Help after you have been operating the oscilloscope
Selecting a language for Quick Help after you have been operating the oscilloscope
1 Press the Utility key, then press the Language softkey to display the Language menu. 2 Press the Language softkey until the desired language in the list selected.
If the language you want to load is grayed-out in the list, you will need to load the language from floppy disk. The language file can be downloaded from www.agilent.com/find/5462xsw or call an Agilent center and request a language disk for your instrument
2-17
Preparing the Oscilloscope for Use Loading a language from floppy disk
Loading a language from floppy disk
Language files can be downloaded from www.agilent.com/find/5462xsw or call an Agilent center and request a language disk for your instrument.
1 Insert the floppy disk with a language file into the floppy disk drive on the oscilloscope. 2 Press the Utility key, then press the Language softkey to display the Language menu. 3 Press the Load Languages softkey to load the updated language file into the oscilloscope. 4 Press the Language softkey and select the language to be viewed.
For more information about loading and deleting languages, refer to the "Utilities" chapter in the User's Guide.
2-18
Cleaning the oscilloscope
1 Disconnect power from the instrument.
CAUTION Avoid Damage to Sensitive Electronic Components! Do not use too much liquid in cleaning the oscilloscope. Water can enter the front-panel keyboard, control knobs, or floppy disk damaging sensitive electronic components.
2 Clean the oscilloscope with a soft cloth dampened with a mild soap and water solution. 3 Make sure that the instrument is completely dry before reconnecting to a power source.
2-19
2-20
3
Testing Performance
Testing Performance
This chapter explains how to verify correct oscilloscope operation and perform tests to ensure that the oscilloscope meets the performance specifications. To completely test and troubleshoot the mixed-signal oscilloscope, you will create and use a test connector accessory, as described in this chapter. · The test connector makes it easy for you to connect the oscilloscope probes to function generators and measurement equipment with minimum electrical distortion. · The connector is used in the digital channel threshold accuracy test.
Let the Equipment Warm Up Before Testing For accurate test results, let the test equipment and the oscilloscope warm up 30 minutes before testing. Verifying Test Results During the tests, record the readings in the Performance Test Record at the end of this chapter for your oscilloscope. To verify whether a test passes, verify that the reading is within the limits in the Performance Test Record. If a performance test fails If a performance test fails, first perform the User Cal procedure given in Chapter 4. If the User Cal procedure does not correct the problem, refer to Chapter 4, Calibrating and Adjusting.
3-2
Testing Performance List of Test Equipment
List of Test Equipment
Below is a list of test and equipment and accessories required to perform the performance test verification procedures.
Equipment Test connector, 8-by-2 Critical Specifications Not required if 01660-63801 Test Fixture is available See "To construct the test connector" later in this chapter For testing digital channel threshold accuracy 0.1 mV resolution, 0.005% accuracy Outputs differ by 0.15 dB DC offset voltage of -5.5 V to 35.5 V, 0.1 mV resolution 25 MHz--100 MHz sine wave, 5 ppm Recommended Model/ Part Number n/a
Test fixture Digital Multimeter Power Splitter Power Supply Oscilloscope Calibrator BNC banana cable BNC cable (qty 3) Probe cable Shorting Cap BNC Adapter Feedthrough Adapter Blocking capacitor Adapter (qty 3)
Agilent 01660-63801 Agilent 34401A Agilent 11667B Agilent 3245A Fluke 5820A Agilent 11001-60001 Agilent 10503A Agilent 01650-61607 Agilent 1250-0774
BNC(f) to banana(m) 50, BNC (m) and (f) BNC Tee (m) (f) (f)
Agilent 1251-2277 Agilent 11048C Agilent 1250-0781 Agilent 10240-60001
N(m) to BNC(f)
Agilent 1250-0780
3-3
Testing Performance To construct the test connector
To construct the test connector
The Agilent 54621D/22D Mixed-Signal Oscilloscope has digital channels that you will need to connect to test equipment during testing. To easily connect the digital channels, you will construct a test connector only if the 01660-63801 Test Fixture is not available. Construct Test Connector only if Test Fixture is not available The test connector is not required if 01660-63801 Test Fixture is available. Table 3-1 Materials Required to Construct the Test Connectors
Description BNC (f) Connector Berg Strip, 8-by-2 Jumper wire Recommended Part Agilent 1250-1032 Qty 1 1
1 Obtain a BNC connector and an 8-by-2 section of Berg strip. 2 On one side of the Berg strip, solder a jumper wire to all of the pins. 3 On the other side of the Berg strip, solder another jumper wire to all of
the pins.
4 Solder the center of the BNC connector to a center pin on one of the
rows on the Berg strip. 5 Solder the ground tab of the BNC connector to a center pin on the other row on the Berg strip.
Figure 3-1
Constructing the 8-by-2 Connector
3-4
Testing Performance To test the 54621D/22D Oscilloscope digital channels
To test the 54621D/22D Oscilloscope digital channels
Only the 54621D/22D Mixed-Signal Oscilloscope has Digital Channels You need to perform these instructions only if you will be testing the digital channels on the Agilent 54621D/22D Mixed-Signal Oscilloscope. The acquisition system testing provides confidence that the acquisition system is functioning correctly. It does not, however, check a particular specification. 1 Disconnect all probes from the circuit under test and from any other
input source. 2 Using probe leads and grabbers, connect digital channels D0, D1, D2, and D3 to the calibration point on the 54621D/22D front panel. 3 Press the Autoscale key.
If four square waves appear, the acquisition system is functioning correctly. If the square waves do not appear, go to the "Troubleshooting" chapter. Then return here to finish testing the digital channels. 4 Disconnect the digital channels from the calibration point. 5 Use steps 2 and 3 to test the following sets of digital channels. After you
test one set of digital channels, remove them before connecting the next set.
· D4, D5, D6, D7 · D8, D9, D10, D11 · D12, D13, D14, D15
3-5
Testing Performance To verify digital channel threshold accuracy
To verify digital channel threshold accuracy
This test verifies the digital channel threshold accuracy specification of the Agilent 54621D/22D Mixed-Signal Oscilloscope. Test Threshold Accuracy only on the 54621D/22D Mixed-Signal Oscilloscope You need to perform these instructions only if you will be testing the Agilent 54621D/22D Mixed-Signal Oscilloscope.
Threshold accuracy test limits= ±(100 mV + 3% of threshold setting) When to Test You should perform this test every 24 months or after 4000 hours of operation, whichever comes first. What to Test Use these instructions to test the threshold settings of digital channels D7-D0. Then, use the same instructions to test digital channels D15-D8. Verifying Test Results After each threshold test, record the voltage reading in the Performance Test Record at the end of this chapter. To verify whether a test passes, verify that the voltage reading is within the limits in the Performance Test Record. Table 3-2 Equipment Required to Test Threshold Accuracy
Equipment Digital Multimeter Oscilloscope Calibrator BNC-Banana Cable BNC Tee BNC Cable BNC Test Connector, 8-by-2 Critical Specifications 0.1 mV resolution, 0.005% accuracy DC offset voltage 6.3 V Recommended Model/Part Agilent 34401A Fluke 5820A Agilent 11001-60001 Agilent 1250-0781 Fluke 50 cable, P/N 686318 User-built (See "Obtain a BNC connector and an 8-by-2 section of Berg strip." on page 3-4.) PV test fixture Agilent 01660-63801 Agilent 01650-61607
Test Fixture Probe Cable
3-6
Testing Performance To verify digital channel threshold accuracy
1 Turn on the test equipment and the oscilloscope. Let them warm up for
30 minutes before starting the test. 2 Set up the oscilloscope calibrator.
a Set the oscilloscope calibrator to provide a DC offset voltage at the
Channel 1 output.
b Use the multimeter to monitor the oscilloscope calibrator DC output
voltage. 3 Use either method 1 or method 2, described in the following, to connect
the digital channels for testing.
a Method 1 -- Using the Test Connector
Use the 8-by-2 test connector and the BNC cable assembly to connect digital channels D0-D7 to one side of the BNC Tee. Then connect the D0-D7 ground lead to the ground side of the 8-by-2 connector. See figure 3-2. Figure 3-2
5 46 2 0 A
Oscilloscope Calibrator
1 6 C H AN N EL 5 0 0 M S a/ s
M ix e d S ig n a l O sc illo sc o p e
STO R A G E
M e a sure tim e
S a ve/ Re c a ll
E ntry
H O RIZO N TA L
TRIG G E R
D ela y
C HANNEL
Sele c t
Tim e/D iv
IN P U TS
Digital Multimeter
Po sitio n
Trigg e r o u t
Ex t trigg e r in
HP 34401A
Line
!
! !
Channels 8 - 15
BNC-Banana cable Test Connector
Channels 0 - 7
thresh.cdr
Setting Up Equipment and Test Connector for the Threshold Test
3-7
Testing Performance To verify digital channel threshold accuracy
b Method 2 -- Using the Test Fixture
Use the Agilent 01660-63801 Performance Verification Test Fixture and the Agilent 01650-61607 cable, BNC Tee, and BNC cable to connect the digital channels D0 - D15 to the oscilloscope calibrator. See figure 3-3. Figure 3-3
$
1 6 C HA N N EL 5 0 0 MS a/s
M ix e d S i g n a l O s c i l lo s c o p e
STO RA G E
Me a su re tim e
Oscilloscope Calibrator Digital Multimeter
Sa ve/R ec al l
E n try
H O RIZO N TA L
TRIG G ER
D ela y
C H AN N EL
Selec t
Time /D iv
INP UTS
Po sition
Trig g e r o ut
Ex t trig g e r in
HP 34401A
Lin e
!
! !
01650-61607 Cable
BNC-Banana cable
01660-63801 Test Fixture
thresh2.cdr
Setting Up Equipment and Test Fixture for the Threshold Test
4 Use a BNC-banana cable to connect the multimeter to the other side of
the BNC Tee. 5 Connect the BNC Tee to the Channel 1 output of the calibrator as shown in figure 3-2 and figure 3-3. 6 On the oscilloscope, press the D7 Thru D0 key, then press the Threshold softkey.
3-8
Testing Performance To verify digital channel threshold accuracy
7 Press the oscilloscope User softkey, then turn the Entry knob ( ) on the front panel on the oscilloscope to set the threshold test settings as
shown in Table 3-3.
Table 3-3 Threshold Accuracy Voltage Test Settings
Threshold voltage setting DC offset voltage setting (in oscilloscpe User softkey) (on oscilloscope calibrator) +5.00 V 5.00 V 0.00 V +5.250 V ±1 mV dc 4.750 V ±1 mV dc +100m V ±1 mV dc Limits Lower limit = +4.750 V Upper limit = +5.250 V Lower limit = 5.250 V Upper limit = 4.750 V Upper limt = +100 mV Lower limit = 100 mV
8 Do the following steps for each of the threshold voltage levels shown
in Table 3-3.
a Set the threshold voltage shown in the User softkey using the Entry knob on
the oscilloscope. b Enter the corresponding DC offset voltage on the oscilloscope calibrator front panel. Then use the multimeter to verify the voltage. Digital channel activity indicators are displayed on the status line at the top of the oscilloscope display. The activity indicators for D7-D0 should show all of the channels at digital high levels. c Use the knob on the oscilloscope calibrator to decrease the offset voltage, in increments of 10 mV, until the activity indicators for digital channels D7-D0 are all at digital low levels. Record the oscilloscope calibrator voltage in the performance test record. d Use the knob on the oscilloscope calibrator to increase the offset voltage, in increments of 10 mV, until the activity indicators for digital channels D7-D0 are all at digital high levels. Record the oscilloscope calibrator voltage in the performance test record. Before proceeding to the next step, make sure that you have recorded the oscilloscope calibrator voltage levels for each of the threshold settings shown in Table 3-3. 9 Use the 8-by-2 test connector or the Agilent 01660-63801 Test Fixture
to connect digital channels D15-D8 to the output of the oscilloscope calibrator. Then connect the D15-D8 ground lead to the ground side of the 8-by-2 connector. 10 Repeat this procedure for digital channels D15-D8 to verify threshold accuracy and record the threshold levels in the Performance Test Record.
3-9
Testing Performance To verify voltage measurement accuracy
To verify voltage measurement accuracy
This test verifies the voltage measurement accuracy. In this test, you will measure the output of a power supply using dual cursors on the oscilloscope, and compare the results with the multimeter reading. Test limits: ±2.0% of full scale ±1 LSB* · Full scale is defined as 16 mV on the 1 mV/div range. · Full scale on all other ranges is defined as 8 divisions times the V/div setting. *1 LSB = 0.4% of full scale Table 3-4 Equipment Required to Verify Voltage Measurement Accuracy
Equipment Power supply Digital multimeter Cable Shorting cap Adapter Adapter Blocking capacitor Critical Specifications 14 mV to 35 Vdc, 0.1 mV resolution Better than 0.01% accuracy BNC, Qty 2 BNC BNC (f) to banana (m) BNC tee (m) (f) (f) Recommended Model/Part Fluke 5820A or Agilent 3245A Agilent 34401A Agilent 10503A Agilent 1250-0774 Agilent 1251-2277 Agilent 1250-0781 Agilent 10240B
Do this procedure first for Channel 1. Then repeat the procedure for Channel 2. 1 Set up the oscilloscope. a Adjust the channel 1 position knob to place the baseline at approximately 0.5 division from the bottom of the display.
3-10
Testing Performance To verify voltage measurement accuracy
b Set the Volts/Div setting to the value in the first line in Table 3-5.
Table 3-5
Settings Used to Verify Voltage Measurement Accuracy
Volts/Div Setting Power Supply Setting Test Limits 5 V/Div 2 V/Div 1 V/Div 0.5 V/Div 0.2 V/Div 0.1 V/Div 50 mV/Div 20 mV/Div 10 mV/Div 5 mV/Div 2 mV/Div 1 mV/Div* 35 V 14 V 7V 3.5 V 1.4 V 700 mV 350 mV 140 mV 70 mV 35 mV 14 mV 7 mV 34.04 V 13.616 V 6.808 V 3.404 V 1.3616 V 680.8 mV 340.4 mV 68.08 mV 34.04 mV 6.616 mV to 35.96 V to 14.384 V to 7.192 V to 3.596 V to 1.4384 V to 719.2 mV to 359.6 mV to 71.92 mV to 35.96 mV to 7.384 mV
136.16 mV to 143.84 mV
13.616 mV to 14.384 mV
*Full scale is defined as 16 mV on the 1 mV/div range. Full scale on all other ranges is defined as 8 divisions times the V/div setting.
c Press the Acquire key. Then press the Averaging softkey and set #Avgs to 64.
Wait a few seconds for the measurement to settle. 2 Press the Cursors key, set the Mode softkey to Normal, then press the X Y softkey and select Y. Press the Y1 softkey, then use the Entry knob
(labeled the signal.
on the front panel) to set the Y1 cursor on the baseline of
3-11
Testing Performance To verify voltage measurement accuracy
3 Use the BNC tee and cables to connect the oscilloscope calibrator
/power supply to both the oscilloscope and the multimeter. 4 Adjust the output so that the multimeter reading displays the first Volts/div supply setting value in Table 3-5.
Wait a few seconds for the measurement to settle. 5 Press the Y2 softkey, then position the Y2 cursor to the center of the
voltage trace using the Entry knob.
The Y value on the lower line of the display should be within the test limits of Table 3-5. If a result is not within the test limits, see the "Troubleshooting" chapter. Then return here. 6 Continue to check the voltage measurement accuracy with the
remaining Volts/div setting values in Table 3-5.
7 When you are finished checking all of the power supply setting values,
disconnect the power supply from the oscilloscope. 8 Repeat this procedure for Channels 2, 3, and 4, if applicable on your oscilloscope model.
Use a Blocking Capacitor to Reduce Noise On the more sensitive ranges, such as 1 mV/div, 2 mV/div, and 5 mV/div, noise may be a factor. To eliminate the noise, use a BNC Tee, blocking capacitor, and BNC shorting cap to shunt the noise to ground. See figure 3-4. Figure 3-4
To Power Supply or Calibrator Blocking Capacitor BNC shorting cap
To oscilloscope input Using a Blocking Capacitor to Reduce Noise
3-12
Testing Performance To verify bandwidth
To verify bandwidth
This test verifies bandwidth. In this test you will use an oscilloscope calibrator with a level sinewave output. You will use the peak-to-peak voltage both at 1 MHz and at bandwidth frequency to verify the bandwidth response of the oscilloscope. 54622A, 54622D, and 54624A Test limits at 1 mV/div to 5 V/div: · All channels (±3 dB) · dc to 100 MHz · ac coupled 10 Hz to 100 MHz 54621A and 54621D Test limits at 1 mV/div to 5 V/div: · All channels (±3 dB) · dc to 60 MHz · ac coupled 10 Hz to 60 MHz
Table 3-6
Equipment Required to Verify Bandwidth
Equipment Oscilloscope Calibrator Cable * Feedthrough Type N (m), 24-inch 50, BNC (m) and (f) Critical Specifications Recommended Model/Part Fluke 5820A Agilent 11500B Agilent 11048C
* The oscilloscope calibrator is supplied with 2 or more coaxial cables N (m), BNC (m), 1 meter long, Fluke P/N 686318.
3-13
Testing Performance To verify bandwidth
1 Connect the oscilloscope calibrator output through a 50 feedthrough
to the oscilloscope channel 1 input. 2 Set up the oscilloscope.
a Set the time base to 500 ns/div. b Set the Volts/Div for channel 1 to 200 mV/div. c Press the Acquire key, then press the Averaging softkey. d Turn the Entry knob to set # Avgs to 8 averages.
3 4 5 6
Set the calibrator to "Level Sine" and OPR/STBY to "OPR". Set the calibrator for 1 MHz and six divisions of amplitude. Press Autoscale on the oscilloscope. Press the Quick Meas key, then press the Peak-Peak softkey.
Wait a few seconds for the measurement to settle (averaging is then complete). View the Pk-Pk reading at the bottom of the display. Record the reading: Vp-p = _______ V.
7 Change the frequency of the signal generator to the value shown below
for your instrument.
Table 3-7 Signal Generator Frequency Setting
Selected Channel Channel 1 Channel 2 Channel 3 Channel 4 54621A/21D 60 MHz 60 MHz -- -- 54622A/22D 100 MHz 100 MHz -- -- 54624A 100 MHz 100 MHz 100 MHz 100 MHz
8 Change the time base to 5 ns/div. a Wait a few seconds for the measurement to settle. b View the Pk-Pk reading at the bottom of the display. c Record the reading: Vp-p = ______ mV. 9 Calculate the response using this formula:
Step8Result 20 log 10 ------------------------------Step6Result
If the result is not ±3 dB, see the "Troubleshooting" chapter. Then return here. 10 Repeat this procedure (steps 1 to 9) for channel 2, 3, and 4, as applicable
to your oscilloscope model.
Proceed to the next step after you have completed the procedure for channels 2, 3, and 4, as applicable.
3-14
Testing Performance To verify horizontal Dt and 1/Dt accuracy
To verify horizontal t and 1/t accuracy
This test verifies the horizontal t and 1/t accuracy. In this test, you will use the oscilloscope to measure the output of a time mark generator. Test limits: ±0.01% of reading ±0.1% of full scale ±40 ps (same channel) Table 3-8 Equipment Required to Verify Horizontal t and 1/t Accuracy
Equipment Oscilloscope Calibrator Cable Feedthrough Critical Specifications Stability 5 ppm after 1/2 hour BNC, 3 feet 50, BNC connectors (m) and (f) Recommended Model/Part Fluke 5820A Agilent 10503A Agilent 11048C
1 Connect the oscilloscope calibrator to channel 1 using the 50 feedthrough at the oscilloscope input. Then, select Marker and set the calibrator for 100 µs markers. 2 Set up the oscilloscope. a Press the Display key, then set the Vectors softkey to off. b Press the Autoscale key. c Set the time base to 20 µs/div. d Press the Main/Delayed key, then set the Time Ref softkey to Left. e Adjust the Trigger Level knob to obtain a stable display. 3 Press the Quick Meas softkey, set the Source softkey to 1, then select and measure Frequency and Period. Measure the following: Frequency 10 kHz -- The test limits are 9.98 kHz to 10.02 kHz. Period 100 µs -- The test limits are 99.79 µs to 100.2 µs. If the measurements are not within the test limits, see the "Troubleshooting" chapter. Then return here.
3-15
Testing Performance To verify horizontal Dt and 1/Dt accuracy
4 Change the calibrator to 1-µs markers. Change the time base to
200 ns/div. Adjust the trigger level to obtain a stable display. 5 Measure the following:
Frequency 1 MHz -- The test limits are 997.9 kHz to 1.002 MHz. Period 1 µs -- The test limits are 997.9 ns to 1.002 µs. If the measurements are not within the test limits, see the "Troubleshooting" chapter. Then return here. 54622A/22D/24A only 6 Change the calibrator to 10-ns markers. Change the time base to
5 ns/div. Adjust the trigger level to obtain a stable display.
7 Measure the following: Frequency 100 MHz -- The test limits are 99.10 MHz to 100.9 MHz. Period 10 ns -- The test limits are 9.91 ns to 10.09 ns. If the measurements are not within the test limits, see the "Troubleshooting" chapter. Then return here. 54621A and 54621D only 8 Change the calibrator to 20 ns markers. Change the time base to 5 ns/div.
Adjust the trigger level to obtain a stable display. 9 Measure the following:
Frequency 50 MHz -- The test limits are 49.77 MHz to 50.23 MHz. Period 20 ns -- The test limits are 19.91 ns to 20.09 ns. If the measurements are not within the test limits, see the "Troubleshooting" chapter. Then return here.
3-16
Testing Performance To verify trigger sensitivity
To verify trigger sensitivity
This test verifies the trigger sensitivity. In this test, you will apply 25 MHz to the oscilloscope. You will then decrease the amplitude of the signal to the specified levels, and check to see if the oscilloscope is still triggered. You will then repeat the process at the upper bandwidth limit. Test limits for the Internal trigger: 1 mV to 5 V/div (dc to max bandwidth): greater of 0.35 div or 2.5 mVp-p Test limits for the External trigger: dc to 25 MHz: <75 mVp-p 25 MHz to max bandwidth: <150 mVp-p
Table 3-9
Equipment Required to Verify Trigger Sensitivity
Equipment Oscilloscope Calibrator Power splitter Cable * Adapter Feedthrough Critical Specifications 25-MHz, 60-MHz and 100-MHz sine waves Outputs differ < 0.15 dB BNC, Qty 3 N (m) to BNC (f), Qty 3 50, BNC connectors (m) and (f) Recommended Model/Part Fluke 5820A Agilent 11667B Agilent 10503A Agilent 1250-0780 Agilent 11048C (2 required)
* The oscilloscope calibrator is supplied with 2 or more coaxial cables N (m), BNC (m), 1 meter long, Fluke P/N 686318.
3-17
Testing Performance To verify trigger sensitivity
Test Internal Trigger Sensitivity 1 Press the Save/Recall key, then press the Default Setup softkey. 2 Connect the calibrator to channel 1 using a 50 feedthrough at the
oscilloscope input. 3 Verify the trigger sensitivity at 25 MHz and 0.35 divisions.
a Set the output of the calibrator to 25 MHz, and set the amplitude to about
100 mVp-p.
b Press the Autoscale key. c Set the time base to 50 ns/div. d Set channel 1 to 100 mV/div. e Decrease the output of the calibrator until 0.35 vertical divisions of the
signal are displayed. The trigger should be stable. If the trigger is not stable, try adjusting the trigger level. If adjusting the trigger level makes the trigger stable, the test still passes. If adjusting the trigger does not help, see the "Troubleshooting" chapter. Then return here. f Record the result as Pass or Fail in the Performance Test Record. 4 Verify the trigger sensitivity at maximum bandwidth and 0.35 division. a Change the output of the calibrator to 100 MHz for the 54622A/22D/24A or 60 MHz or the 54621A/21D, and set the amplitude to about 100 mVp-p. b Set the time base to 10 ns/div. c Decrease the output of the calibrator until 0.35 vertical divisions of the signal is displayed. The trigger should be stable. If the trigger is not stable, try adjusting the trigger level. If adjusting the trigger level makes the trigger stable, the test still passes. If adjusting the trigger does not help, see the "Troubleshooting" chapter. Then return here. d Record the result as Pass or Fail in the Performance Test Record. 5 Repeat this procedure for channels 2, 3, and 4, as applicable to your
oscilloscope model.
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Testing Performance To verify trigger sensitivity
Test External Trigger Sensitivity Verify the external trigger sensitivity at these settings: 100 MHz (54622A/22D/24A), <150 mVp-p 60 MHz (54621A/21D), <150 mVp-p 25 MHz (All models), <75 mVp-p 1 Use the power splitter to connect the calibrator to both the channel 1
input and the external trigger input. The Ext Trigger input is on the rear panel of the mixed-signal oscilloscope and the 4-channel oscilloscope. Connect 50 feedthroughs to the oscilloscope inputs. 2 Change the output of the calibrator to 100 MHz for the 54622A/22D/24A or 60 MHz for the 54621A/21D, and set the amplitude to 106 mVrms (300 mVp-p).
The power splitter divides the 300 mVp-p so that 150 mVp-p is applied to each of the oscilloscope inputs. 3 Press the Autoscale key. 4 Press the Trigger Edge key, then press the Ext softkey to set the trigger
source to external trigger.
5 Check for stable triggering, and adjust the trigger level if necessary. 6 Record the results as Pass or Fail in the Performance Test Record. If the test fails, see the "Troubleshooting" chapter. Then return here. 7 Change the output of the calibrator to 25 MHz and set the amplitude to
25.74 mVrms (75 mVp-p). 8 Check for stable triggering, and adjust the trigger level if necessary. 9 Record the results as Pass or Fail in the Performance Test Record.
If the test fails, see the "Troubleshooting" chapter. Then return here.
3-19
Agilent 54622A/22D/24A Performance Test Record
Agilent 54622A/54622D/54624A
Serial No. ______________________________________ Test Interval ____________________________________ Recommended Next Testing ________________________ Threshold Accuracy Test (100 mV + 3% of threshold setting) Specification 5 V - 250 mV 5 V + 250 mV -5 V - 250 mV -5 V + 250 mV 0 V - 100 mV 0 V + 100 mV Limits 4.750 V 5.250 V -5.250 V -4.750 V -100 mV 100 mV Test by _____________________________ Work Order No. ______________________ Temperature ____________ Ch D7-D0 ________ ________ ________ ________ ________ ________ Ch D15-D8 ________ ________ ________ ________ ________ ________
Voltage Measurement Accuracy Range Power Supply Setting 5 V/Div 35 V 2 V/Div 14 V 1 V/Div 7V 500 mV/Div 3.5 V 200 mV/Div 1.4 V 100 mV/Div 700 mV 50 mV/Div 350 mV 20 mV/Div 140 mV 10 mV/Div 70 mV 5 mV/Div 35 mV 2 mV/Div 14 mV 1 mV/Div 7 mV Bandwidth Horizontal t and 1/t Accuracy Generator Setting Frequency 10 kHz Period 100 µs Frequency 1 MHz Period 1 µs Frequency 100 MHz Period 10 ns Trigger Sensitivity Internal trigger External trigger
Test Limits 34.04 V to 35.96 V 13.616 V to 14.384 V 6.808 V to 7.192 V 3.404 V to 3.596 V 1.3616 V to 1.4384 V 680.8 mV to 719.2 mV 340.4 mV to 359.6 mV 136.16 mV to 143.84 mV 68.08 mV to 71.92 mV 34.04 mV to 35.96 mV 13.616 mV to 14.384 mV 6.616 mV to 7.384 mV Test Limits 3 dB at 100 MHz
Channel 1 ________ ________ ________ ________ ________ ________ ________ ________ ________ ________ ________ ________
Channel 2 ________ ________ ________ ________ ________ ________ ________ ________ ________ ________ ________ ________
Channel 3 ________ ________ ________ ________ ________ ________ ________ ________ ________ ________ ________ ________
Channel 4 ________ ________ ________ ________ ________ ________ ________ ________ ________ ________