HP 400E, Operating And Service Manual

Page: 22 / 57

Section V
Models 400E/400EL
Table 5-1. Required Test Equipment
INSTRUMENT
REQUIRED
RECOMMENDED MODEL
TYPE SPECI FICATIONS
AC Calibrator
Accuracy: 0.022(/f, to 0.205% -hp- Model 745A/746A
Voltage Ranges: O.lmV to 300V
AC Calibrator
Frequency Range: 10Hz to 110kHz
Test Oscillator
Frequency Range: 10Hz to 10MHz -hp- Model 651 B or 652A
Output: 3.0 volts rms max.
Test Oscillator
Distortion: less than I ';t
Frequency Response: adjustable
to 0.25'/(1 (652A)
AC!DC Voltmeter
Range: 0 to 100 volts -l1p- Model 3450B Multi-Function
Sensitivity: 100 microvolts
Meter with Option 001
Accuracy: greater than 0.1
I,Y;,
DC Null Meter Range: ±3 microvolts full scale -hp- Model 419A IX Null
to 10mV full scale Voltmeter
Accuracy: 27;' of full scale
Thermal a. Input: 3 volts rms. R
=
a. -h p- Model H02-
Converters
200 ohms/volt
1I049A (600 ohms input)
Output: 7mV dc
b. Input: I volt and,0.45 volt rms b. -hp- ModeIII 050A
Output: 7mV dc
and I 1051 A Thermal
Accuracy: 0.2% or better Converters (50 ohms in put)
Frequency Range: dc to 10M Hz
DC
Standard Output: Adjustable to 0.45V, I V and 3V -hp· Model 740B DC Standard
Accuracy: 0.1
%
or better
Differential Voltmeter
0-10 MV
See Figure 5-2 for schematic.
Reference a. Resistor: fxd. 6500 ohms ±I % a. -hp- Part No. 0811-0392
Supply b. Resistor: var. 500 oh ms ±5%.
b. -hp- Part No. 2100-0324
10-turn
c. Resistor: var. 50 ohms ±5%, c. -hp- Part No. 2100-1481
10-turn
d. Battery: I .34 volts
d. Mallory RM42R
AC/DC Voltmeter
Accuracy:
±
Y>;
-hp- Model 41 OC
Ohmmeter
Input Capacity:
<
1.5 pF Electronic Voltmeter
Input Impedance:
>
10 MU
Resistors
Fxd. 100 kilohms ±I %
-hp- Part No. 0757-0465
Fxd,
I
kilohm ±I%
-hp- Part No. 0757-0280
Var. 15 kilohms, ww ±5(X, 10-turn
-hp- Part No. 2100-0896
Voltmeter
Voltage Accuracy: ± .25% a t 400Hz
-hp- Model 738BR Voltmeter
Calibrator
Output: 0 to 3 volts
Calibrator
Termination
Feed-through, 50 ohm impedance -hp- Model I I 048C 50 ohm
Feed-through Termination
Coaxial
50
dB attenuation
±
0.01 dB de to 10 MHz Weinschel Engineering
Attenuators
40 dB attenuation
±
0.0
I
dB de to 10 M Hz
Models 5040S and
50-50S Coaxial Attenuators
Wideband
Frequency Range: 10 Hzt04 MHz -hp· Model 3403C
AC Voltmeter Accuracy: Greater than
±
I �:(). True RMS Voltmeter
5-0