Fluke ScopeMeter 123 Service Manual page 80

123
Service Manual
3. Set the TV Signal Generator to source a signal with the following properties:
4. Observe the trace, and check to see if the test tool triggers on line number:
Figure 4-9. Test Tool Screen for PAL/SECAM
5. Using
6. Observe the trace, and check to see if the test tool triggers on:
4-24
•
Using set the Input A sensitivity to 200 mV/div.
• select 20 µs/div.
Using
•
Press to enable the arrow keys for selecting the video line number.
•
Using select the line number:
622 for PAL or SECAM
525 for NTSC.
•
the system selected in step 2
•
gray scale
•
video amplitude 1V (5 divisions on the test tool)
•
chroma amplitude zero.
622 for PAL or SECAM, see Figure 4-9
525 for NTSC, see Figure 4-10.
Numerical readings in the pictures shown below may deviate from those
shown in the test tool display during verification.
line 622
select the line number:
310 for PAL or SECAM
262 for NTSC
line number 310 for PAL or SECAM, see Figure 4-11.
line number 262 for NTSC, see Figure 4-12.
Note
PAL622.BMP
Figure 4-10. Test Tool Screen for NTSC line
NTSC525.BMP
525