Clock Timing Adjustment (Board Number 671-B089-Xx And 671-B279-00 Only) - Tektronix TG700 Service Manual

Clock Timing Adjustment (Board Number 671-B089-XX and 671-B279-00 Only)

Preparation
Procedure
TG700 TV Signal Generator Platform Service Manual
To perform the clock timing adjustment, you must first remove the top cover of
the TG700 mainframe. (See page 1-15, Top Cover.)
After you have removed the top cover, find the variable resistors on the AGL7
circuit board. (See Figure 3-2.)
WARNING.
To avoid serious injury, do not touch exposed connectors or
components when operating the TG700 mainframe with the top cover removed.
Dangerous potentials exist at several points within the TG700 mainframe.
1. Select the NTSC Black Burst signal for BLACK 1 and BLACK 2 and
1080/59.94i signal for BLACK 3 as follows:
a. Press the left (◄) or right (►) arrow button to select BLACK 1, and then
press the ENTER button.
b. Press the left (◄) or right (►) arrow button to select NTSC, and then
press the ENTER button.
c. Press the left (◄) or right (►) arrow button to select Black Burst, and
then press the ENTER button.
d. Press the CANCEL button twice to return the AGL7 main menu.
e. Repeat parts a through d of this step to select the NTSC Black Burst
signal for BLACK 2.
f. Press the left (◄) or right (►) arrow button to select BLACK 3, and then
press the ENTER button.
g. Press the left (◄) or right (►) arrow button to select 1080/59.94i, and
then press the ENTER button.
h. Press the CANCEL button to return the AGL7 main menu.
AGL7 Analog Genlock Adjustment Procedures
3–7