Del'd Tb Triggering Pm3390B/94B; Trigger Sensitivity Via Ch1, Ch2, Ch3 And Ch4 (Ext) - Fluke Autoranging CombiScope PM3370B Reference Manual

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Test set-up:
Note: the number a various tests to be performed is numerous. Therefore it is
recommended only to check the tv system(s) as used in your country.
The number of tests is also limited by the available TV pattern generator.
1 - Apply a video signal to input CH1 with an amplitude of about 1V
synchronization pulse amplitude; use a 75Ω termination instead of internal
or external 50Ω.
2 - Press the AUTOSET key.
3 - Press menu key TRIGGER and select 'tv' in the related menu.
4 - Select field 1 or field 2 in the menu.
5 - Select a line number (e.g. 25) by means of the TRACK control.
6 - Select pos or neg (depending on the available TV pattern generator).
7 - Select in the VIDEO SYSTEM submenu hdtv, ntsc, pal or secam
(depending on the available TV pattern generator). The maximum number
of lines for hdtv can be selected if hdtv is active.
Requirements:
- Decrease the amplitude of the input signal and verify that the signal is
well-triggered on the tv pulses, at sync pulse amplitudes of 0.7 divisions and
more.
4.3.37 DEL'D TB triggering PM3390B/94B; trigger sensitivity via CH1, CH2,
CH3 and CH4 (EXT)
The trigger sensitivity depends on the amplitude and frequency of the trigger
signal. In this test the main timebase trigger sensitivity via the CH1, CH2, CH3
and CH4 inputs is checked. For the PM3390B, this is checked for CH1, CH2 and
the EXTernal TRIGger input.
PERFORMANCE TEST