Fluke 190-104 Service Manual page 49

1. Connect the Test Tool to the calibrator as shown in Figure 4-19.
PM9585 - 50 OHM
B
A C D
Figure 4-19. Test Tool Input A to TV Signal Generator
2. Select the following Test Tool setup:
•
Reset the Test Tool
•
Press TRIGGER
•
Choose
VIDEO on A...
Polarity: POSITIVE | PAL
•
F2
Press
•
F3
Press
•
Using select line number:
⇒ 622 for PAL, PALplus, or SECAM
⇒ 525 for NTSC.
mV
•
Using and
RANGE
setting is 10:1).
s TIME
•
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 4-20).
5. Using select Test Tool line number:
⇒ 310 for PAL, PALplus or SECAM
⇒ 262 for NTSC
6. Set the calibrator format and marker line number to :
⇒ PAL 310 (odd), for PAL and PALplus
PM9091
USE 50 OHM
TERMINATION
NORMAL SCOPE
FLUKE 5500A CALIBRATOR
F4
, then press to open the Trigger Options menu.
, then from the shown opened menu choose
( or or
NTSC
to select
ALL LINES
to enable the arrow keys for selecting the video line number.
RANGE
set the Input A sensitivity to 2 V/div (the actual probe
V
ns
select the time base to 20 μs/div.
Performance Verification
4.6 Scope Input A, B, C, D Tests
or )
PALplus SECAM
4
4-31