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

Model 3438A Section V
5-19. @ Ohms Gain Adjustment (R119).
a. Set the Multimeter to kll, 20 kll range.
b. Set the GR 1433H Decade Resistor to I9 kll and
connect it across the
Vlfl to COM terminals.
c. Adjust
R1 19 for a Multimeter display reading of
19.00
kfl.
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 AC Calibrator as l~llows:
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 745A
I I I I
I I
Figure 5-2. AC Gain Adjustment.