ATG7 module adjustment procedures
15. Select the DAC G
ain (700 m V DC) calibration signal for outputs as follows:
a. Press the left (◄) or right (►) arrow button to select BLACK 1,andthen
press the ENTE
R button.
b. Press the left (◄)orright(►) arrow button to select DAC Gain (700 mV
DC),andthe
npresstheENTER button.
c. Press the BACK button.
d. Repeat parts a through c of this step to select the calibration signal for
the BLACK 2, SIGNAL, and BARS outputs.
16. Locate variable resistor R481 on the ATG7 circuit board. (See Figure 5-1.)
17. Adjust R481 so that the output gain is 700 mV ±1 m V.
18. Change the BNC cable connection from the BLACK 1 connector to the
BLACK 2 connector on the ATG7 module.
19. Locate variable resistor R581 on the ATG7 circuit board. (See Figure 5-1.)
20. Adjust R581 so that the output gain is 700 mV ±1 m V.
21. Chang
e the BNC cable connection from the BLACK 2 connector to the
SIGNAL connector on the ATG7 module.
22. Locat
e variable resistor R 681 on the ATG7 circuit board. (See Figure 5-1.)
23. Adjust R681 so that the output gain is 700 mV ±1 m V.
24. Change the BNC cable connection from the SIGNAL connector to the BARS
connector on the ATG7 module.
25. Locate variable resistor R781 on the ATG7 circuit board. (See Figure 5-1.)
26. Adjust R781 so that the output gain is 700 mV ±1 m V.
TG8000 Multiformat Test Signal Generator Service Manual 5–5
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