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FUNCTION REFERENCE 5 - 85
The MAIN TB trigger settings are selected in the menu under the TRIGGER menu
key. The toggle softkey ‘ch...line’ selects the trigger source in combination with the
keys TRIG1, TRIG.. and EXT TRIG that give direct front panel access to select
the trigger source. This is combined with the slope selection.
Function of TRIGGER LEVEL and slope
Key sequence:
Toggle key to select CH1, CH.. or EXTTRIG as MAIN TB
trigger source. Subsequent key presses cause the trigger
slope to change between positive and negative trigger
edge.
TRIGGER
LEVEL
TRIGGER
LEVEL
SLOPE:
POSITIVE
SLOPE:
NEGATIVE
SLOPE:
NEGATIVE
SLOPE:
POSITIVE
WAVEFORM
ON SCREEN
WAVEFORM
ON SCREEN
WAVEFORM
ON SCREEN
WAVEFORM
ON SCREEN
ST6749
Toggle softkey to select edge or TV triggering. In digital mode
also logic triggering.
Toggle softkey to select positive or negative trigger edge (slope).
In digital mode also dual slope.
Toggle softkey to select MAIN TB trigger source. CH1 to CH4 are
to be selected with TRIG1 to TRIG4.
. . TRIG . .