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ELECTRONIC Test Instruments
9 TUBE TESTERS FILL ALL REQUIREMENTS
LABORATORY TUBE TESTER
All Voltages Variable and Metered
Model 700: Most complete and accurate
Tube Tester. Covers wide
ranges of values to duplicate the results
in tube manuals. This instrument
is invaluable for electronic
developmental and research work.
Model 7001: Null Reading Apparatus,
for use with the Model 700 to
MODEL 7001 MODEL 700 obtain bridge type Null readings
with an accuracy of 1 %. Most complete and accurate Tube Tester
available.
PORTABLE TUBE TESTER
Most Accurate
Model 539B: Features simplicity of
operation in providing a complete
and accurate evaluation of electron
tubes. Has Mutual Conductance circuits,
6 micromho ranges, 4 AC Signal
voltages, metered line voltage,
metered grid voltage and other im-
MODEL 539B portant features.
7 OSCILLOSCOPES MEET SPECIALIZED REQUIREMENTS
_ LABORATORY CATHODE RAY OSCILLOSCOPE
Wide Range ... Versatile
Model 770: Provides unusually wide
range of DC to 5 MC. 10 M.V. RMS
per inch sensitivity. Built -in calibrating
voltages. New flat -faced tube.
Illuminated calibrated screen. Mumetal
shield. Shock mounted. This
highly stable 'Scope is laboratory
MODEL 770 quality throughout.
TECHNICIANS' OSCILLOSCOPE
5 -Inch Portable or Rack Mount
Model 670R: DC to 600 KC, within
3 db. Useable to beyond 2MC..015
RMS volts per inch sensitivity. Sweep
circuit oscillator; 3 cycles to 50 KC.
Fixed sweep frequencies; 30 and 7875
cycles. Input impedance: vertical,
MODEL 670R 2.2 megohms -15 mmf; horizontal,
1 megohm -35 mmf. Features illuminated calibrated screen. Also
available in portable case as Model 670A.
SMALLER SIZE LABORATORY OSCILLOSCOPE
3 -Inch Portable
Model 385: DC to 4 MC, within 3
db, 0.75 RMS volts per inch sensitivity.
Sweep circuit oscillator; 3
cycles to 50 KC. Input impedance:
vertical and horizontal amplifiers;
2.2 megohms -25 mmf. Features replaceable
circuit sections. High qual-
MODEL 385 ity throughout. Also available in portable,
moisture -proof, weather -proof aluminum carrying case as
preferred by field engineers.
MODEL 387R
INDUSTRIAL LABORATORY OSCILLOSCOPE
3 -Inch Rack Mount
Model 387R: Popular rack -mount
style in an accurate 3 -inch oscilloscope.
Features identical vertical
and horizontal amplifiers. DC to 500
KC response. 10 MV RMS sensitivity.
Designed to permit versatile use
in all phases of electronic work.
11 GENERATORS WITH SPECIALIZED FUNCTIONS
SINE -SQUARE WAVE GENERATOR
For Laboratory & Industrial Use
Model 710: Provides an accurately
calibrated source of sine wave and
square wave functions over a wide
frequency range. Sine wave total
harmonic distortion below 1%. Hum
level better than 90 db down. Square
wave rise time less than .1 Microsecond.
20 cycles to 1 MC in five ranges on both sine and square
waves.
MICROVOLT SIGNAL GENERATOR
125 KC to 175 MC on Fundamentals
Model 295X: Ideal for mobile radio
and other communication equipment
design and maintenance. Output 0.1
microvolt to 100,000 microvolts. 125
KC to 175 MC continuous on fundamentals.
400 cycle modulation -approximately
30 %. Attenuation down
to 0.1 microvolt - no external attenuator pad required. Vernier
Control permits hairline settings. Silverplated copper cage shielding.
Test leads are furnished.
5 VTVM and VOM INSTRUMENTS
TRUE VACUUM TUBE
Laboratory Size and Accuracy
Model 209A: Contains large 9" meter
with zero- center scale. Highly accurate
for servicing industrial electronic
equipment. DC Volts: 0 -1200 in 6
ranges. AC Peak -to-Peak Voltage:
0 -1200 V. in 6 ranges. Capacitance
0.1 to 10,000 MMF in 2 ranges,
0 -1000 MF in 5 ranges. 50 MH to 100 henries. 0.1 ohm to
10,000 megohms in 7 ranges.
NEW VOLT -OHM -MILLIAMMETER
You Can't Burn It Out!
Model 455: New design portable
VOM. Includes all practical ranges.
Features patented protection system
which protects both the meter and
associated circuits from damage due
to accidental overload. Quality designed
for utility and attractiveness.
MODEL 455 Neoprene carrying case available.
HIGHLY ACCURATE DC and AC PORTABLE INSTRUMENTS
Ammeters, Milliammeters, Micro -
ammeters, Voltmeters, Millivolt -
meters, Volt- Ammeters. Thermometers
are contained in a phenolic
case lined with heavy steel shell which
shields from the effects of stray
magnetic fields. Scale divisions are
spaced equal distances apart. Accuracy
within 'Fi of 1%. On special
order, Model 14 can be supplied with
MODEL 14 a calibration chart to provide accuracy
to 0.2%. Also available is a complete line of pocket portables.
METERS
The many special movements developed by HICKOK are: electrodynamometers,
self- contained frequency meters, galvanometers,
true logarithmic deflections, special curves for special purposes and
ruggedized designs for highest shock tests. Full technical information
on the complete line of HICKOK instruments and test equipment
is available on request. Kindly list details of your requirements
and ask for Catalogs No. 32 and 33.
THE HICKOK ELECTRICAL INSTRUMENT COMPANY
10514 DUPONT AVENUE CLEVELAND 8, OHIO
HIGHEST QUALITY ELECTRICAL AND ELECTRONIC TEST INSTRUMENTS
148 For product information, use inquiry card on pages 209 -210. Tele -Tech & ELECTRONIC INDUSTRIES June 1956