Fluke 199B Service Manual page 49

Proceed as follows:
1. Connect the test tool to the calibrator as shown in Figure 4-16.
Figure 4-16. Test Tool Input A to TV Signal Generator
2. Select the following test tool setup:
•
Reset the test tool
•
Press , then press
•
Choose
VIDEO on A...
Polarity: POSITIVE |
•
Press to select
•
Press to enable the arrow keys for selecting the video line number.
•
Using
⇒ 622 for PAL, PALplus, or SECAM
⇒ 525 for NTSC.
•
Using and
is 10:1).
•
Using
3. Set the calibrator to mode video with amplitude +100%. Set format and marker line
number to :
⇒ PAL 622 (even), for PAL and PALplus
⇒ SECAM 622 (even), for SECAM
⇒ NTSC 262 even, for NTSC.
4. Observe the trace, and check to see if the test tool triggers on the negative pulse
before the marker pulse (see Figure 17).
to open the Trigger Options menu.
, then from the shown opened menu choose
( or
PAL
ALL LINES
select line number:
set the Input A sensitivity to 2 V/div (the actual probe setting
select the time base to 20 μs/div.
4.6 Scope Input A&B Tests
NTSC PALplus SECAM
Performance Verification
al55sca.bmp
)
4
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