AWVG7 module adjustment procedures
15. Adjust R851A an
d R851B so that the output gain is 700.4 mV ±1 mV.
16. Move the BNC cable from the upper CH 1 connector to the upper CH 2
connector on t
he AWVG7 module.
17. Locate variable resistors R751A (coarse) and R751B (fine) o n the AWVG7
module circ
uit board. (See Figure 7-1.)
18. Adjust R751A and R751B so that the output gain is 700.4 mV ±1 mV.
19. Move the BNC cable from the upper CH 2 connector to the upper CH 3
connector on the AWVG7 module.
20. Locate variable resistors R651A (coarse) and R651B (fine) o n the AWVG7
module circuit board. (See Figure 7-1.)
21. Adjust R651A and R651B so that the output gain is 700.4 mV ±1 mV.
22. Move the BNC cable from the upper CH 3 connector to the upper CH 2
connector on the AWVG7 module.
23. Select the DAC Gain (YPbPr) : 0 mV calibration signal for CH 2 and CH
3 as follows:
a. Press the BACK button to display the CALIBRATION menu.
b. Press the left (◄)orright(►) arrow button to select DAC Gain (YPbPr),
and then press the ENTER button.
c. Press the left (◄)orright(►) arrow button to select 0mV, and then press
the ENTER button.
24. Locate variable resistor R757A on the AWVG7 module circuit board. (See
Figure 7-1.)
25. Adjust R757A so that the output offset is 0 V ±1 mV.
26. Move the BNC cable from the upper CH 2 connector to the upper CH 3
connector on the AWVG7 module.
27. Locate variable resistor R657A on the AWVG7 module circuit board. (See
Figure 7-1.)
28. Adjust R657A so that the output offset is 0 V ±1 mV.
7–6 TG8000 Multiformat Test Signal Generator Service Manual
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