TM 11-6625-1614-15
.
Model 410C
Section V
Parsgraphs 5-20 to 5-23
Figure 5-3
Figure 5-3.
High Frequency Response Test
c. Set Model 410C FUNCTION SELECTOR to
+DCV ; RANGE to .015 V.
d. Adjust voltmeter calibrator for +. 015 VDC
output.
e. The dc voltmeter should read +1.5 v. This
will vertfy a gain of 100, when the gain /A/
equals
E
DC out/
E
410C.
5-20. AMPLIFTER NOfSE CHECK.
a. Leave the dc voltmeter connected to the DC
AMPLIFIER OUTPUT as in Paragraph 5-19.
b. Set the Model 410C RANGE to 1500 V;
FUNCTION SELECTOR to +DCV.
c. Short the Model 410C DCV and COM cables.
Note dc voltmeter readings.
This
reading
should be less than 7.5 millivolts .
d. Reset Model 410C RANGE to 1.5 V. DC
Voltmeter should read less than 7.5 mv.
5-21.
DC AMPLIFTER OUTPUT
IMPEDANCE
CHECK.
a. Connect an external DC Voltmeter Model
3440A/3442A) to Model 410C DC AMPLIFIER
OUTPUT terminals on rear panel.
b. Set Model 410C FUNCTION SELECTOR to
OHMS position.
c. Record voltage indicated on external dc
voltmeter for use as a reference.
d. Connect a 1.5 k ohm ±1% resistor Part
No. 0730-0017) across Model 410C DC AMPLI -
FIER OUTPUT terminals. DC voltage recorded
in step c above should not change more than
3 mv, indicating that dc amplifier output im-
pedance is within the 3 ohm specification at dc.
5-22. AC VOLTMETER OPERATION.
5-23. 11036A
AC PROBE ACCURACY CHECK.
a. Figure 5-3 describes the test arrangement
required for this operation. Do not
place
Model 410C AC Probe in T-Connector at this
point.
b. Adjust signal generator for a 0.7 volt (rms)
output at 1000 cps.
c. Connect Model 11036A AC Probe to signal
generator and read output on Model 410C Volt-
meter (meter should read 0.7 volts).
d. Remove probe tip from Model 11036A and
connect the ac probe as shown in Figure 5-4.
e. Turn signal generator to 50 Mc and adjust
signal generator for a power reading of 9.8
dbm (0.7 volts) on the power meter.
f. The difference between reading on Model
410C meter and 0.7 volt reference is the ac
probe error at that frequency.
g. Repeat steps f and g every 100 Mc from 50
to 700 Mc.
01556-2
5-5
