AVG7 module adjustment procedures
6. Use the CH 2 vert
ical position knob on the oscilloscope to align the CH 2
trace to the CH 1 trace with no signal input.
7. Restart the in
strument in Factory mode:
a. Press and hold the MODULE, ENTER,andFront Panel ENABLE
buttons sim
ultaneously.
b. Continue holding the buttons until the message TG8000 Booting...
displays.
c. When the message TG8000 Booting... displays, release the MODULE
and ENTER b
uttons. Continue holding the Front Panel ENABLE
button.
d. When the m
essage TG8000 Start up with Factory Mode displays,
release the Front Panel ENABLE button.
8. Select t
he DAC Test calibration signal as follows:
a. Press the MODUL E button to display the AV G 7 main menu.
b. Press the up (▲)ordown(▼) arrow b utton to select CALIBRATION.
c. Press the left (◄)orright(►) arrow button to select DAC Test,andthen
press the ENTER button.
d. Press the ENTER button again to confirm the signal output.
9. Select the Sync ON All Channels mode as follows:
a. Press the up (▲) or down (▼)arrowbuttontoselectVIDEO,andthen
press the ENTER button to access the VIDEO submenu.
b. Press the up (▲) or down (▼) arrow button to select GBR SYNC.
c. Pr
ess the left (◄)orright(►
)arrowbuttontoselectSync ON All
Channels, and then press the ENTER button.
1
0.
A
djust R756A so that the CH 2 blanking level is aligned to the CH 1 blanking
level.
11. Move the BNC cable from the CH 2 connector to the CH 3 connector on
the AVG7 module.
12. Adjust R656A so that the CH 3 blanking level is aligned to the CH 1 blanking
level.
6–16 TG8000 Multiformat Test Signal Generator Service Manual
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