Figure 1-10 Dc Gain Verification Setup - Keysight 8990B Service Manual

1 Performance Verification and Adjustments
Figure 1-10
2 Allow the system to warm up for approximately an hour.
3 Press Default Setup on the 8990B to set the 8990B to its default settings, and
4 Enable averaging and set the average count to 256.
5 Set the DC power supply to the output voltage as shown in
6 Set the input impedance for the video input channel 2 to 50 Ω.
7 Set the vertical scale for the video input channel 2 to 10 mV/div.
8 Press Clear Display, and wait for the average count to reach 256.
9 Record the voltage reading at the digital multimeter in V
10 Record the mean value of the average reading at the 8990B in V
11 Repeat
12 Repeat
44
6614C
34410A/3458A
DC gain verification setup
turn on video input channel 2.
respectively in Table
V respectively in
scope–
step 5 to step 10
step 5 to step 11
1-5.
Table 1-5.
for the rest of the vertical scale setting in
with the input impedance set to 1 MΩ.
8990B
Table 1-5.
and V
DMM+
scope+
Table
Keysight 8990B Service Guide
DMM–
and
1-5.