Range, 20 Khz Adjustment (R102); Range, 20 Khz Adjustment (R110); Ac Range, 100 Khz Adjustment (C109) - HP 3438A Operating And Service Manual

Model 3438A Section V
5-19.
@
Ohms Gain Adjustment (R119).
a. Set the Multimeter to k l l , 20 k l l range.
b.
Set the G R 1433H Decade Resistor to I9 k l l and
connect it across the V l f l to COM terminals.
c. Adjust R1 19 for a Multimeter display reading of
19.00 k f l .
5-20.
@
AC Gain Adjustment (R123).
a. Set the Multimeter to ac V, 20 V range.
b. Set the 745A AC Calibrator as follows:
Frequency 200 Hz
Voltage range 100 V
Outputvoltage 19.0000V(ac)
c. Connect the 745A to the Multimeter as shown in
Figure 5-2.
d. Adjust R 123 for a Multimeter display reading of
19.00 V.
5-21.
@
20 V Range, 20 kHz Adjustment
(R102).
a. Set the Multimeter to ac V, 20 V range.
b. Set the 745A AC Calibrator as follows:
Frequency 20 kHz
Voltage range 100 V
Output voltage 19.0000 V (ac)
c. Connect the 745A to the Mult~rneter its shown in
Figure 5-2.
d. Adjust K102 for n Multirnetcr- display reading of
19.00 V.
5-22.
@
2 V Range, 20 kHz Adjustment (R110).
a. Set the 745A A C Calibrator as l ~ l l o w s :
Frequency 20 kHz
Voltage range 10 V
Output voltage 1.90000 V (ac)
b. Set the Multirneter to ac V. 2 V range.
c. Connect the 745A to the Multirneter as shown in
Figure 5-2.
d. Adjust RI I0 for a Multimeter display reading of
1.900 V.
5-23.
@
20 V ac Range, 100 kHz Adjustment
(Clog).
a. Set the Multimeter to ac V, 20 V range
b. Set the 745A AC Calibrator as follows:
Frequency 100 kHz
Voltage range 100 V
Output voltage 19.0000 V (ac)
c. Connect the 745A to the Multimeter as shown in
Figure 5-2.
d. Adjust C109 for a Multimeter display reading of
19.00 V.
AC CALIBRATOR
hp
7 4 5 A
I I I
I
I
I
Figure 5-2. AC Gain Adjustment.