Fluke 123B/S Service Manual - Page 84

From the VIDEO TRIGGER, Select the following test tool setup

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123/124 Service Manual PAL310.BMP Figure 4-11. Test Tool Screen for PAL/SECAM line 310 NTSC262.BMP Figure 4-12. Test Tool Screen for NTSC line 262 7. Apply the inverted TV Signal Generator signal to the test tool. You can invert the signal by using a Banana Plug to BNC adapter (Fluke PM9081/001) and a Banana Jack to BNC adapters (Fluke PM9082/001), as shown in Figure 4-13. Figure 4-13. Test Tool Input A to TV Signal Generator Inverted ST8142.WMF 8. Select the following test tool setup: • Press to open the SCOPE INPUTS menu. • Press to open the TRIGGER menu and choose: I VIDEO on A The VIDEO TRIGGER sub-menu is shown now. From the VIDEO TRIGGER menu choose: SYSTEM: I NTSC or I PAL or I SECAM or I PALplus | LINE: I SELECT | • POLARITY: I NEGATIVE • Using set the Input A sensitivity to 200 mV/div. • Using select 20 µs/div. 4-26

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Service Manual
4-26
PAL310.BMP
Figure 4-11. Test Tool Screen for PAL/SECAM
line 310
NTSC262.BMP
Figure 4-12. Test Tool Screen for NTSC line
262
7.
Apply the inverted TV Signal Generator signal to the test tool.
You can invert the signal by using a Banana Plug to BNC adapter (Fluke
PM9081/001) and a Banana Jack to BNC adapters (Fluke PM9082/001), as shown in
Figure 4-13.
ST8142.WMF
Figure 4-13. Test Tool Input A to TV Signal Generator Inverted
8.
Select the following test tool setup:
•
Press
to open the SCOPE INPUTS menu.
•
Press
to open the TRIGGER menu and choose:
■
VIDEO on A
The VIDEO TRIGGER sub-menu is shown now.
From the VIDEO TRIGGER
menu choose:
SYSTEM:
■
NTSC
or
■
PAL
or
■
SECAM
or
■
PALplus |
LINE:
■
SELECT |
•
POLARITY:
■
NEGATIVE
•
Using
set the Input A sensitivity to 200 mV/div.
•
Using
select 20
µ
s/div.