HP 410C manual Amplifier Operation, Ohmmeter Operation, Amplifier Gain Check

TM 11-6625-1614-15

Section V	Model 410C
Paragraphs 5-16to 5-19
Table 5-5

c. Adjust dc power supply to provide system voltmeter reading of 1.50 v.

e. Model 410C should read	approximately
150 ma. This will verify a	Rin o f a p p r o x i -

mately 0.3 ohms, where

R410C = E total - R X I 4 1 0 C

I410C

f. Set Model 410C RANGE to 1.5 µa.

g. Replace Rx with a 9 K ohm ±1% resistor Part No. 0730-0026).

h.Adjust dc power supply to provide system voltmeter reading of 13.5 mv.

j.Model 410C should read approximately 1.5

µa. This will verify R in of 9 K on 1.5 µa range.

h. If both of these ranges function properly, it can be assumed that the remainder will also . If meter does not function properly, refer to Paragraph 5-31for adjustment procedure.

5-17. AMPLIFIER OPERATION.

D e l e t e d

see paras 5-19and 5-24

5-16. OHMMETER OPERATION.

a. A 10 ohm ±l% resistor Part No. 0727-

0335) and a 10M resistor Part No. 0730-

0168) will be required for this test.

b. Set Model 410C FUNCTION SELECTOR to OHMS; RANGE to RX10.

c. Set pointer to using rear panel adjust- ment (OHMS ADJ) if required.

d. Connect COM and DCA OHMS cables across 10 ohm resistor.

e. Meter should read 1 (±5%), indicating 10 ohms.

f. Reset Model 410C RANGE to RX10M. Re- place 10 ohm resistor with 10 M ohm resistor.

g. Meter should read 1 (+5%), indicating 10 M ohms.

5-19. AMPLIFIER GAIN CHECK.
a . Connect	Voltmeter C a l i b r a t o r		M o d e l
738BR) output to Model 410C DCV and			COM
cables.
b. Connect	DC Voltmeter	Model	3440A/

3442A) to DC AMPLIFIER OUTPUT on rear panel of Model 410C. Set DC Voltmeter RANGE to 10 v.

Table 5-5. DC Voltage Output Test

D e l e t e d

5-4 C h a n g e 1 01556-2