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ATG7 module adjustment procedures

d. Press the up (▲)

or down (▼) arrow button to select SELECT OUTPUT.

e. Press the left (◄)orright(►) arrow button to s elect BARS,andthen

press the ENTER button.

f. Press the left (◄)orright(►) arrow button to select PAL, and then press

the ENTER butto

g. Press the left (◄)orright(►) arrow button to select 75% Colour Bar,

and then press the ENTER button.

h. Press the BACK button twice to return to the ATG7 module main menu.

3. Set the oscilloscope controls as follows:

Vertical: 100 mV / div

Sample depth: 100 K

Horizontal: 2 μs/div

Trigger position: 50%

Vert offset: 700 mV

Trigger: 720 mV, rising edge

Hold-off: 63 μs

4. After you see a stable trace on the oscilloscope, change the Vertical setting to

5mV/div.

5. Locate the ﬂat bar followed by the burst packets for yellow and cyan as

shown below.

Figure 5-4: Triggered display for adjusting the ATG7 module chroma gain

TG8000 Multiformat Test Signal Generator Service Manual 5–7

Tektronix TG8000 Service Manual

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