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66252 DMM Switch
Compatible with all 6625 Measurement Systems
Provides Ease of Use for 6634A Series or Other System Resistance Standards
Guildline Instruments Limited is pleased to introduce the
66252 DMM Switch for all versions of the 6625 system including
the widely fielded 6625AF.
This option allows operators new flexibility from the 6625
Measurement system. For example, the Guildline Model 6634A
Temperature Stabilized Resistance Standard, with up to 10
available Resistance Standards, is typically hard-wired on 10
channels of the 6664 Series
scanners. It is normally
difficult or time consuming to
remove all the cabling and
wires if an operator simply
wanted to use the Resistance
Standard as a source for items
such as artifact calibrations,
MODEL 66252 FEATURES high accuracy DMM's and
other metrology situations.
Allows System Resistance Standard to be When installed, the DMM Switch allows the 6625 operator to use
used as Resistance Source the System either in a measurement configuration against the
6622 Series Bridge or allows the 6634A resistance values to be
Available in Bench Configurations used as a Standard output on any available free scanner channel
(No Modification to 6625AF System) without having to change wires or remove cables.
Usable Resistance Range 1 to 100 M
Now use your 6625 System Resistance
Input Impedance >1014
Standards for both Measurement and Source
Includes Scanner Low Thermal Short Applications without having to disconnnect
Software Utilities available and reconnect wires.
Includes lead compensation procedures for
low resistance connection to long scale The DMM Switch isolates the 6622 DCC Bridge from the 6625
DMM's. system and joins the Rs and Rx scanner channel lines together.
This allows you to connect the DMM to any free Rx channel (Line
Use on any 6625 System including AF Models B) and use the Rs channels (Line A) to select the resistance values
to be referenced.
Easy to Use, Easy to Install. Can be field
installed with minimal tools. To use with the 6625 System 6622 Series Bridge, simply turn and
Wide Operating Range 18 0C to 28 0C set the DMM Switch to "Bridge" (Measure) and operators have a
wide measurement range from 1 uOhm to 100 Mohms.
Use with any Number of Scanners However, if the operator wishes to use the 6634A Resistance
Standards (or others) as a source to calibrate high end DMM's,
simply set the DMM Switch to "DMM" (source) and you now
have your resistance standard capable of sourcing values from
100 mOhm to 100 Mohms on any free scanner channel.
The model 66252 DMM Switch is a unique, field installable
option for the model 6625 Resistance Measurement System.
Additional software utilities are available to allow automatic
calibration of precision instruments such as the Agilent 3458A
DMM and other Long Scale Multi-meter Resistance Ranges.
66252 DMM Switch
The DMM Switch will work with any resistance standard connected to a 6625 Scanner. The DMM Switch option also includes a Low
Thermal short for connection to the scanner. The short allows for nulling out uncontrolled affects
such as lead resistance and thermals from the DMM through the scanner. For example, Agilent
recommends zeroing out all lead resistance prior to connecting up any resistance standard. To
automate this process, simply connect the leads from the DMM to a free channel on the system
scanner. Place the Zero Short adaptor on a second free channel. Select both channels and null
out the DMM. All lead and thermal affects have now been accounted for.
Software Compatibility
Available utilities will work with Bridgeworks-C or 6625AF Bridgeworks 2.0 and up versions of software. Optional
utilities for calibrators such as the 5700 and 5720's can fully automate calibration of the Resistance function of
these calibrators including either 2 wire or four wire outputs and the 1.9X values without having to stop or change
leads. There are also software utilities available for long scale DMM's such as the HP 3458A. Again, these utilities
can fully automate the calibration of the Resistance function of these DMM's. Guildline can produce other software
utilities, which calibrate Resistance Functions for Standards such as Wavetek/Datron, Fluke, Keithley and others.
Please contact Guildline for availability and cost.
Need The Ultimate In A Primary Resistance Standard?
Step up to our 6634A or 6636 Series of Temperature Stabilized Resistance
Standards. From 5 to 10 Values with a Range of 0.1 Ohms to 10
TeraOhms all contained within their own controlled temperature
environment.
When you have had your fill of oil baths, and want the best in a stand-alone Resistance Standard today, take a look at our 6634A and
6636 Temperature Stabilized Resistance Standards. With unsurpassed stabilities, its own built-in temperature environment and
temperature coefficients down in the parts per billion (ppb) make them an excellent addition to any Metrology Laboratory.
General Specifications Guildline is distributed by:
Environmental
Operating Temperature -20 0C to 60 0C
Operating Humidity 15% to 80% RH non-condensing
Storage Temperature -20 0C to 60 0C
Storage Humidity 15% to 80% RH
Ordering Information
66252 DMM Switch (with Low Thermal Short)
/Upgrade Upgrades Bridgeworks-R to Bridgeworks-C Version
/57XX Bridgeworks-C 57XX Series Utilities
/3458 Bridgeworks-C HP 3458A Series Utilities
/CUS UTL User Requested System Utility
Guildline Instruments Limited
Optional Standards 21 Gilroy Street, PO Box 99
6634A-X Temperature Stabilized Resistance Standard Smiths Falls, Ontario, Canada K7A 4S9
6634A-TS Traveling Standard (4 Elements) Phone: (613) 283-3000 Fax: (613) 283-6082
6664B 2 Amp, 16 Channel Low Thermal Scanner Web: www.guildline.com
6664C 1000 V, 2Amp 8 or 16 Channel Low Thermal Scanner Email: [email protected]
30630-00-85 REV. B COPYRIGHT