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HEWLETT PACKARD
TO USE THE INDEX OF EL ECTRONIC MEASURING EQUIPMENT
Refer to the opposite page, find the classification of interest, and
turn to the appropriate page. Equipment descriptions are necessarily
concise, with some specifications stated only at their optimum'' c



point, etc. Complete technical information may be readily obtained
from the Hewlett-Packard office nearest you (listed on inside back
cover). The field engineer there will promptly send a data sheet,
and will gladly discuss your specific application requirements.




TO FIND OUT ABOUT HEWLETT-PACKARU please lift this page.
From research-and-development laborator- for chemical and nuclear measurement.
ies and manufacturing facilities throughout To assure concentrated effort in develop-
the free world come Hewlett-Packard elec- ing true state-of-the-art measuring tools,
trcnic measuring instruments ...carefully plus specialized manufacturing experience
designed and built to provide you with the and know-how that assures instrument qual-
greatest possible usefulness, accuracy, con- ity and reliability, Hewlett-Packard is organ-
venience, dependability and dollar value. ized into the product-centered divisions and
N o w i n its second quarter-century of affiliates Iisted below.
growth, Hewlett-Packard is recognized as And to provide complete applications as-
a major progressive source of instrumenta- sistance and after-sale back-up, Hewlett-
tionoffering astandard of quality unmatched Packard has more than 100 field engineering
i n the electronic test equipment field. offices situated around the world. The inside
Hewlett-Packard is also a leading supplier back cover lists nearby offices serving your
of medical diagnostic and patient moni- area; give the field engipeers there a call
toring equipment, as well as instruments next time you have a measurement need.




COLORADO SPRINGS DIVISION
Colorado Springs, Colorado-Oscilloscopes, pulse generators and
related instruments.

DYMEC DIVISION
Palo Alto, California-Digital data acquisition and processing instruments and
systems, plus specialized test equipment for other applications.

F & M SCIENTIFIC DIVISION
Avondale, Pennsylvania-Gas chromatographs, C-H-N analyzers, osmometers,
viscometers and other equipment for chemical measurements.

FREQUENCY & TIME DIVISION "


Palo Alto, California-Electronic counters, digital recorders, frequency and time
standards, nuclear instrumentation.


H P ASSOCIATES
Palo Alto, California-Advanced solid-state components including hot carrier and
step recovery diodes, microwave switches, photoconductors, optoelectronic
devices.

HARRISON DIVISION
Berkeley Heights, New Jersey-Highly regulated dc power supplies and
related equipment.

H EW LETT- PACKAR D Ltd.
South Queensferry, Scotland-Communications test equipment for world-wide
sales; also many of Hewlett-Packard's most widely used instruments for the British,
EFTA and Commonwealth markets.
ti EW L E l l - PACKAR D G .m.b.ti.
Boblingen, West Germany-Pulse generators, industrial recorders for world-wide
sales; also many of Hewlett-Packard's most widely used instruments for the European
Common Market.

LOVELAND DIVISION
Loveland, Colorado-Voltmeters, oscillators, amplifiers, distortion analyzers,
resistance and dc voltage standards, other general-purpose test equipment.

MICROWAVE D lVlSl0 N
Palo Alto, California-Sweep oscillators, signal generators, waveguide and coaxial
test equipment, spectrum analyzers, specialized test equipment for use at
microwave frequencies. "


MOSELEY DIVISION
Pasadena, California-X-Y recorders, strip-chart recorders for laboratory and
industrial applications, plus related accessory items.

RO CKAWAY DlVlS ON
I
Rockaway, New Jersey-Impedance measuring equipment, plus special-purpose
signal generators and air navigation test sets.

SANBORN DIVISION
Waltham, Massachusetts-Recording systems and instruments for measuring and
recording physical phenomena. Also medical diagnostic apparatus, including
patient monitoring equipment.

YOKOGAWA-HEWLETT-PACKARD Ltd.
Tokyo, Japan-Impedance measuring instruments, oscillators, power supplies for
world-wide sales; also many of Hewlett-Packard's most widely used instruments
for the Japanese market.
CONTENTS
VOLTAGE. CURRENT. RESISTANCE SPECTRUM ANALYSIS . . . . . . . . . 27
MEASUREMENT . . . . . . . . . . . 2

DC voltage measurement. standards . . . . 2 SIGNAL SOURCES. MODULATORS.
Digital voltmeters . . . . . . . . . . 3 ATTENUATORS . . . . . . . . . . . 27
AC voltage measurement . . . . . . . . 4
Frequency-selectivevoltmeters . . . . . 4 Frequency synthesizers . . . . . . . . 27
Multi-function meters . . . . . . . . . 5 Pulse and square-wave generators . . . . 28
Current measurement . . . . . . . . . 5 Sweep oscillators. signal generator . . . . 29
Meter calibration . . . . . . . . . . 6 Oscillators and signal generators . . . . . 30
Vector voltmeter . . . . . . . . . . . 6 Frequency stabilizing synchronizers . . . . 32
Communication and air navigation test sets . 32
Frequency converters. doublers. mixers . . . 33
IMPEDANCE MEASUREMENT . . . . . . . 6 Attenuators. modulators . . . . . . . . 33

Vector impedance meter . . . . . . . . 6
Universal impedance bridge . . . . . . . 7
Q meters . . . . . . . . . . . . 7
COAXIALAND WAVEGUIDE INSTRUMENTS . . 34
RX meter and transistor tester . . . . . . 7
Microwave impedance indicators . . . . . 7
Impedance. reflection coefficient bridges . . 8 POWER MEASUREMENT . . . . . . . . 36
Slotted line. sections . . . . . . . . . 8

MICROWAVE NOISE FIGURE MEASUREMENT . 37
WAVEFORM. DISTORTION ANALYZERS . . . 8

RECORDING AND DATA ACQUISITION . . . . 38
OSCILLOSCOPES . . . . . . . . . . . 9
X-Y recordersandaccessories . . . . . . 38
Event recorders . . . . . . . . . . . 39
POWER SUPPLIES . . . . . . . . . . 14 Continuous-chart recorders
(1. 2 channels) . . . . . . . . . . 40
.
Therm a I r ec o r d ing systems
AMPLIFIERS . . . . . . . . . . . . 20 (4.6. 8 channels) . . . . . . . . . .-41
Optical recording systems
(to 25 channels) . . . . . . . . . . 42
FREQUENCY. TIME STANDARDS . . . . . . 22 Magnetic tape recording systems
(7. 14 channels) . . . . . . . . . . 43
Digital data acquisition systems . . . . . 43
Digital data plotting systems . . . . . . 45
FREQUENCY MEASUREMENT . . . . . . . 23
Digital system elements
(scanners. recorders. etc.) . . . . . . 45
Plug-in and general-purpose counters . . . 23
Reversible plug-in counter . . . . . . . 24
Preset counter . . . . . . . . . . . 25
Time interval counter . . . . . . . . . 25 NUCLEAR MEASUREMENT . . . . . . . 47
Frequency-extending counter accessories . . 26
Frequency and tachometer indicators . . . 26
Coaxial and waveguide frequency meters . . 26 TEMPERATURE MEASUREMENT . . . . . . 48


Data subject to change without notice . Prices f.0.b. factory .
VOLTAGE, CURRENT,
RESISTANCE MEASUREME NTS




34208 DC Differential Voltmeter1 Ratiometer 419A DC Null Voltmeter 735A DC Transfer Standard



DC voftage measurement, standards
Hewlett-Packard dc null voltmeters, dc differential R&D or standards laboratory. Use the hp dc transfer
voltmeters and dc standards.. .for unprecedented ac- standard and null voltmeter for making precise stand-
curacy, stability, sensitivity and convenience on the ard dc voltage measurements where they're needed.
production line or quality assurance bench, in the

Instrument I Performance Model Price

DC standard and differential voltmeter DC standard: &0.002% accuracy, 1-1000 V full 7406 $2350
for calibrating digital and differential VM's, use scale, floating, guarded input; high stability,
as high-voltage dc standard source, for dc regulation. DC differential voltmeter: &0.005%
standard transfer measurements, standard cell accuracy, 1pV t o 1000 V null ranges, 1 p p m
comparisons, as low-level null detector, for resolution a t full scale, 6 digits. DC high if
precision low-level measurements. VM: 1pV to 1,000 V e n d scale ( 3 ~ 2 % accuracy),
> 1 O l o ohms input R on most ranges. Amplifier:
gain t o 60 db. +O.OOl% linearitv.

AC and DC differential voltmeter, DC standard AC differential voltmeter: f0.05% t o &0.2% 741A $1475
adds ac capability, 2 0 Hz-100 kHz, t o dc accuracy 1-1000 V end scale, 1 M Q/(<5 pf) input
standard and differential VM measurements. E. DC differential VM: 0.02% accuracy, 1 t o
Useful also as dc standard, high Z ac or dc VM, 1000 V end scale, input t >lo9ohms. DC
voltage or power amplifier. Recorder output. standard: 0 to 1000 V, 6-digit resolution,
3~0.02% accuracy; &0.02% power amplifier,
0 t o 1 kV.
DC differential voltmeter/ratiometer for DC differential voltmeter: &(0.002% of reading + 342OA $1175
standard cell comparisons, precision low-level 0.0001% of range) 1.1 to 1100 V full scale, 4
measurements. Fully floating input for ranges, 0.2 ppm resolution at full scale, 6 voltage 34206 $1300
attenuator and linearity tests. Resistance decade dials. Input R infinite 1and 10 V ranges, (ac line and
and voltage ratios. Recorder output. 10 M Q other ranges. Ratiometer: &(0.002% of ec hargea bll
DC high if voltmeter. reading +0.0002% of range) RX1 t o RXO.OO1, batteries)
4 ranges. DC high if VM: 10 pV to 1000 V e n d
scale (&3% of end scale). 9 ranges.
~~




DC null voltmeter is portable and battery- Internal bucking voltage for measuring high-if 419A $450
operated. Useful as sensitive null detector for source voltages; 0.1 pV resolution, <0.5 pV drift/
bridge measurements, floating VM measure- day; >80 db superimposed ac rejection, overload
rnents, thermocouples, general-purpose VM t o 1200 V; &3 pV to 3Z1 kV zero center scale VM,
and/or null detector, dc amplifier. accuracy f2% of end scale &O.l pV.
DC null voltmeter with high input impedance, &1 mV t o 3ZlOOO V end-scale range, f2% of end 413A $350*
stability; low noise. input isolated from ground. scale accuracy; high ac rejection; also, high-gain,
Useful as dc amolifier. low-noise amolifier.

DC transfer standard is 1V reference for volt Outputs: 1.00000 V reference; 1.018+( A); 1.019 735A $375
boxes, potentiometers; standard cell comparator; +(A); 0-1000 pV source with 1 ,uV resolution
stable microvolt source; portable, compact; ( A=3-digit direct-reading 0-1000 pV offset
simplifies dc standard work, direct-reading voltage); 2 ppm transfer accuracy between std.
comparisons. cells, 10 ppm/month stability, output floating
and guarded.
*Add $5 for rack mount

2
Digital voltmeters
Select easy-to-use Hewlett-Packard digital voltmeters --
--
"-

and get the right combination of performance, reli-
ability and value for every application. Versatile DVM's
with plug-in controls can be tailored t o many measure-
ments, while integrating and integrating/potentio-
metric DVM's accurately measure low-level signals in
the presence of noise. For accessory equipment and w
systems using these DVM's, see page 38. H04-3460A High-resolution DVM



Instrument Range (full scale)

DVM with plug-in versatility, choice of 0.100-1000 v
manual, automatic, remote ranging; extra- fldigit 2-3/sec
high sensitivity; ac and dc voltage, direct
current, resistance measurements; 4-digit
readout; 3 0 db ac rejection at 6 0 Hz; float
input pair up to 500 V above chassis
ground; ideal bench instrument.

Add BCD output and remote programming 0.100-1000 v
to 3439A above: Solid-state instrument can &l
digit 5/sec t o




+
be remotely programmed and provides a 115 sec
printer output; sample rate variable; ideal
for low-cost systems (see page 44).

Manual range unit for manual selection 10, 100, 1000 Vdc
fl digit
Auto range unit for automatic, manual 10, 100, 1000 Vdc f0.05% of rdg 3442A $ 135
or remote selection of dc voltage ranges. &l digit
m

High gain/auto range unit for 100,1000 mV; 10, 100, *0.05% of r d g 3443A $ 450
automatic, manual or remote selection 1000 Vdc 51 digit


Voltage: same as 3443A E: f0.05% of rdg &1 ,digit 3444A $ 575
selection of dc voltage, direct current, Current: 100 PA-1000 mA I : &0.2% of rdg *1 digit
Resistance: 10000 -10 M 6 2 R: 3=0.3%of r d g fl digit
AC/DC range unit for automatic, DC: 10, 100, 1 O O O V DC: f0.05% of rdg fl digit 3445A $ 525
3 manual or remote selection of ac and AC: 10, 100, 1OOOV AC: f O . l % of rdg +2 digits
.c dc voltage ranges. Manual function 5 0 Hz-100 kHz 50 Hz-20 kHZ
M selection.
-
a AC/DC remote unit, same as 3445A Same as 3445A Same as 3445A 3446A $ 575
except also has remote function
selection.
*Requires a plug-in unit for operation



Instrument Range (full scale) Accuracy Speed Model Price-

Integrating DVM measures accurately 0.1, 1, 10, 100, 1OOOVdc; *O.Ol% of r d g l / s e c for 2401C $3950
despite high common mode and super- 300% overrange, 6th digit *0.005% of full 5-digit
imposed noise; 140 db CMR all noise scale *1 digit resolution,
frequencies; 1 pv sensitivity; full at 25" C 50/sec for
programmability for systems 3-digit
(see pages 43,44).

Integrating/potentiometric DVM combines 10, 100, 1000 Vdc; 20% *0.008% of rdp
speed and high noise rejection, lab accuracy overrange, 6th digit *0.002% of
1OOpv sensitivity,5-digit readout, 150 db full scale
CMR, 120% of full scale superimposed noise (20"-30OC)
rejection, pushbutton selection of manual for 90 days
or autoranging.

Adds 1 V range, systems speed, BCD 1, 10, l O C , 1000 Vdc; *0.004% of rdg
output, remote programming to 3459A 20% overrange, 6th digit *0.002% of 115 sec;
above; sample rate to 15/sec, front and full scale 15/sec at
rear inputs (see systems use, page 44). (20'-30OC) 5-digit
for 90 days
~~




Similar to 3460A above except resolution
is 1 part in 1.2 x 106, sensitivity is 1 pV,
and stability is 10 ppm/month.
1, 10, 100, 1000 Vdc;
20% overrange, 7 t h digit
%0.005% of r d g l / s e c
or 3=0.005%
of full scale
6-digit
resolution
1 H04-
3460A 1 $4250
1
-
continued on next page 3
VOLTAGE, C
REUS C S
continued




A C voltage measurement HewIett-Pac ka rd ac vo It mete rs off e r meas u rements
over a wide frequency range, 1 Hz t o 1 GHz, at sensi-
tivities from 0.001 V to 300 V, with high input resis-
tances and low input capacitances. They include solid-
state, vacuum-tube and battery-operated meters, a
true rms voltmeter, and a differential voltmeter.
A unique incoherent sampling voltmeter (3406A)
lets you accurately measure 1 mV to 3 V, from 10 kHz
to 1 GHz.. .with the absolute average value of the
input displayed on the meter. Outputs permit record-
ing the ac measurement and plotting the input signal
400E AC Voltmeter 3406A Broadband Sampling Voltmeter waveform with a pulse height analyzer.

Instrument Frequency range Voltage range* Accuracy** Model Price
High-accuracy ac voltmeter has dc output 10 Hz-10 MHz 1 mV-300 V *l% to f 4 % 400E $285
(410.5%) for driving DVM's or recorders; (12 ranges)
useful as high-gain ac amplifier; input
impedance 10 M n/8-21 pf.

Similar to 400E above except has linear -70 db to f l % t O *4% 400 EL $295
12 db log scale uppermost. +52 d b
(12 ranges)
Vacuum-tube voltmeter, also useful as ac 10 Hz-4 MHz 1 mV-300 V &2% to f5% 400D $250***
amplifier; input impedance 10 M n/10-25 pf. (12 ranges)
Similar to 400 D above except has 1% f l % t O f5% 400H $325***
accuracy and larger meter.

Similar to 400 H above except has linear -70 d b to f 2 % to *5% 400L $325***
12-db log scale uppermost. +52 db
(12 ranees)
-


Battery-operated ac voltmeter, input 1 Hz-1 MHz 1 mV-300 V 413% to &5% 403A $275
impedance 2 M n/20-40 pf. (12 ranges)
Rechargeable battery ac voltmeter also 5 Hz-2 MHz 1 mV-300 V f2% to f5% 403B $310
operates from ac power line, input (12 ranges)
impedance 2 M d 2 5 - 5 0 Df.
~ ~~~




RMS voltmeter provides actual rms readings 10 Hz-10 MHz 1 mV-300 V *l% t o f5% 3,400A $525
of complex ac signals; dc output for driving (12 ranges)
DVM's or recorders; input impedance
10 M Q/15-40 pf.

RF millivoltmeter, input impedance depends 500 kHz-1 GHz 10 mV-10 V *3% to fl db 411A $450***
on probe tip. (7 ranges)
Sampling RF voltmeter has hold button on
probe to retain meter indication; output
provides true rms measurements when used
with 3400A; many accessories; input
impedance depends on probe tip used.

AC differential voltmeter (see model 741A 20 Hz-100 kHz 1 V-1000 V f0.05% to 741A $1475
on page 2); input impedance is end scale f0.2% end
1 M R / < 5 pf. (4 ranges) scale

*RMS full scale, except as noted **Full scale, except as noted ***Add $5 for rack-mount version of the cabinet instrument




Frequency-selective volfmeters
(See waveform analyzers on page 8.)

4
Mufti-function meters
When it's important to make a variety of measure-
ments with one instrument, select a versatile multi-
function meter from Hewlett-Packard. There's the
low-cost 427A solid-state, battery-operated meter for
maximum value.. .while the 414A Autovoltmeter
offers time-saving "touch and read" convenience, with
range, polarity automatically selected in 300 msec. 427A Multi-function Meter 41 4A Autovoltmeter

Instrument Resistance range
(accuracy)

Autovoltmeter has automatic DC: f 5 mV t o f1500 V 5 Qt o 1.5 M Q
ranging and polarity; input (30.5% f.s., f0.5% rdg) (fl% rdg,
impedance 10-100 M O. f0.5% f.s.)
12 dc voltage ranges
12 resistance ranges
Battery-operated multi-function DC: f100 m V t o 3lOOOV 10Qt o 10 MQ
meter has 10 M L2dc input (32%) midscale (f5%)
impedance and 10 M O/20 pf AC: 10 mV-300 V
ac input impedance.
9 dc voltage ranges
10 ac voltage ranges
7 resistance ranges
Versatile voltmeter has DC: f 1 5 m V t o 31500V DC: f1.5 pA t o 100 t o 10 M 0
100 M Ildc input impedance and (42%) f 1 5 0 mA midscale (f5%)
10 M O/1.5 pf ac impedance. AC: 0.5 V-300 V ( 33%)
7 dc, ac voltage ranges 20 Hz- >700 MHz
11 dc voltage & c u r r e n t ranges (f3% a t 400 Hz)
7 resistance ranges
Vacuum-tube voltmeter has DC: f 1 V t o f1OOOV 0.2 Q t o 500 M Q
122 M 1 dc input impedance and
2 ( *3%) (f5%)
10 M n/1.5 pf ac impedance. AC: 1-300 V
6 dc, ac voltage ranges 2 0 Hz-700 MHz
7 resistance ranges




I
~~




DC vacuum-tube voltmeter has DC: &l flOOOV
mV to DC: fl to f1 A
pA 10 to 100 M 0
200 M n input impedance. (*I%) (f2%) (f5% of reading)
13 dc voltage ranges
13 direct current ranges
9 resistance ranges

DC microvolt-ammeter has DC: 310 pV to fl
V DC: f10 pA to
1 M 1 input impedance.
2 (f3%) f 3 mA (33%)
11 dc voltage ranges
18 direct current ranges
' rack-mount version


Current measurement
c
Instrument Current range Accuracy Frequency range Model Price




DC milliammeter with clip-on probe eliminates 1 mA-10 A f.s. 33% dc-400 HZ 428B $600*
direct connection, prevents circuit loading. (9 ranges)

Large aperture current probe for 1 mA-10 A f.s. 33% dc-300 HZ 3528A $450
2 measuring current in large conductors up
1 to 2%'' in diameter.
Q@J
2
a
Magnetometer probe for determining 0.1 milligauss
magnitude and direction of magnetic fields. t o 10 gauss
*3%
I I 3529A I $ 75 I
I I
current probe for use with volt- 1 rnA-1 A rms 60 Hz-4 MHz
meters and oscilloscopes; make measurements (to 2 5 A with to3db 2 5 Hz-20 MHz
without breaking or loading circuit; input , divider)
imoedance is 5 0 milliohms in series with 0.05 rrH. I 456A $lgo
fast rise
waveforms on a wide-band oscilloscope.
1 mV/mA
sensitivity
lower limit is
1700 Hz; upper
limit 40 MHz with
30 pf load
ll1OA I $loo I
Amplifier for l l l O A probe above increases probe (with scope) f3% 5 0 Hz-20 MHZ llllA $160
sensitivity, extends low frequency response. 1 mA/cm t o
5 A/cm


_ _ ~

continued on next page 5
VOLTAGE, E
RESISTA S
continued




Meter calibration
Instrument Voltage range Frequency range Model Price
(accuracy)

Voltmeter calibration system measures voltage accuracy K02-738BR $1920
and frequency response of voltmeters and oscilloscopes;
consists of 3 instruments below (which may be purchased
separately) in one enclosure.

I Voltmeter calibrator 300 pV-300 V,
dc or ac, in
400 Hz, rms and
p-p: also dc
I 738BR 1 $850 I
40 steps; (dc:
0.1%; ac: 0.2%)

Frequency response test set >3 V into 300 kHz-10 MHz 739AR $600
50 a;(&0.5%) in 3 ranges; 5 Hz-
10 MHz with 200 SR
oscillator

Oscillator extends lower frequency limit of 739AR 200SR $225
above (also see page 31).

AC/DC meter calibrator for voltmeters and ammeters; 0.01-1000 V, 58-62 Hz; also dc 6920B $695
1 pA-5A current output, dc or ac. dc or ac; (dc:
0.2%; ac: 0.4%)


Meter accessories
For use with basic measuring instruments (voltmeters, cluding cables, voltage dividers, connectors, shunt
multi-function meters, etc.)and oscilloscopes, Hewlett- resistors, line-matchingtransformers-each of which
Packard offers a wide selection of accessories in- increases the versatility of the particular instrument.


Vector voltmeter
Phase and amplitude measurements from 1 MHz t o
1 GHz are greatly simplified with the 8405A Vector
Voltmeter, which measures the magnitude of each of
two input signals and the phase difference between
them. Easy to operate, this instrument permits com-
ponent, network and amplifier characterization quickly
and conveniently. Phase difference and magnitude are
displayed on front-panel meters with recorder outputs 8405A Vector Voltmeter
also available. Input signals are applied through con- 2 1db to 1GHz; voltage range is 1 mV to 10 V for the
venient probes. Phase range is f 180" with 0.1 " reso- reference channel, 100 pV t o 10 V full scale for the
lution. Amplitude accuracy is k0.5 db to 700 MHz, other channel. Residual noise is 10 pV. 8405A, $2500.




IMPEDANCE E

Vector impedance meter
The solid-state 4800A Vector Impedance Meter pro- 500 kHz. Impedance magnitude 1 ohm-10 megohms
vides direct-reading impedance measurements 5 Hz- and phase angle Oto r 9 0 " are automatically displayed
on front-panel meters with no balancing or nulling
adjustment. Also operates as direct-reading L-C meter
0.1 picofarads to 10,000 microfarads and 1 micro-
henry t o 100,000 henries, measure Q employing "Q
by A f " technique; oscillator monitor output for fre-
quency counter; optional analog outputs for x-y re-
corder. Price $1490. 4800A Vector Impedance Meter



Universal impedance bridge
Fast, accurate measurements of C, R , L, D and Q are , . ..-
I-*.u.I ,
easy with the 4260A Universal Impedance Bridge.
Digital readout, automatic decimal indication and
simplified controls make it especially suitable for pro-
duction testing and general measurement uses. A 4260A Unwersal
unique circuit electronically compensates for inter- CT) Impedance Bridge
action between bridge controls in C and L measure- ' --

ments so balance is achieved with use of a single balance easy. Price, $550 (price f.0.b. Palo Alto,
control. False or "sliding" nulls are eliminated, and California; for price in other countries, contact local
direction indicators make range selection and C or L Hewlett-Packard sales office).


Q meters
Two general-purpose impedance measuring devices of 10-625, C range 30-460 pf, L range 0.09 ph-130
specializing in measurement of low-loss components mh; is priced at $990. Model 190A covers 20-260
and circuits. Each is a self-contained system, including MHz, Q range of 5-1200, C range 7.5-100 pf, L range
the rf source output indicator and referencestandards. 4 ph-8.5 ph; is priced at $1075.
Model 260A covers 5 0 kHz-50 MHz, with a Q range


RX meter and transistor tester
The 250A is a self-contained wide-range rf bridge coils), inductance range 0.001 ph-100 mh (depends
system for use in measuring high-loss components on freq.), measurement voltage level 0.05-0.75 V
and networks. Transistor measurements can be made (depends on freq.). Price, $1795.
with the 13510A Transistor Jig (see below). The 250A The 13510A is a test jig for use with 250A RX Meter.
covers 5 0 0 kHz-250 MHz, resistance range 1 5 t o R F range 500 kHz-250 MHz, external bias range 5 0
100,000 ohms,C range0-20 pf (to120pf with auxiliary mA, 3 0 V dc maximum. Price, $195.


Microwave
impedance
indicators" 415E SWR Meter



Instrument I Model 1 Price

Standing wave indicator tuned VM for swr measurement with slotted lines, detector mounts; 415B $250**
direct-reading expanded scale for full-scale indication of 1.3 t o 1.0; read in accurate upper portion
of scale, using precise attenuator; 70 db calibrated range; 200 kQ input impedance for use as null
indicator; recorder output; tuned frequency 1000 cps &2%; max. sensitivity 0.1 pv.

SWR meter low-noise tuned amplifier-voltmeter calibrated in db and swr; measures swr, 415E $350
attenuation, gain, other parameters based on difference between 2 signal levels; low noise figure
(<4 db) increases measurement range; use with crystal or bolometer detectors; sensitivity
0.15 pv a t max. bandwith; 70 db range; accuracy &0.05 d b / l O db step; input freq. 1000 Hz,
adjustable 7%; bandwith variable 15-130 Hz.
Ratio meter for reflectometer measurements using swept-frequency techniques t o improve
measurement coverage; continuous swept-frequency accuracy &3%; tuned frequency 1000 Hz
f4%; eliminates amplitude variation errors with direct ratio display; four % reflection ranges
100-3% f.s.; two swr ranges 1.06-1.9; four db ranges 0-40 db.
1 416B 1 $590*** 1
*Also see Coaxial and Waveguide Instruments (page 34) **For rack mount model add $5 ***For rack mount model, $15 less

continued on next page 7
IMPEDANC E M AS UREME
continued
E


Impedance, reflection coefficient bridges
1
Instrument Frequency range Model Price

VHF bridge; direct reading 2-2000n impedances, - 9 O O t o +90