Main Triggering Level Range - Tektronix 7B92A Maintenance Manual

Fig. 5-1. Main Triggering level range.
i. Check-set the MAIN TRIGGERING SOURCE to
EXT and repeat part g of this step.
j. Check-set the MAIN TRIGGERING SLOPE to +
and repeat part g for the positive slope of the waveform.
A2. Check Delayed Triggering Level Range
a. Disconnect the 50-n cable from the MAIN TRIG
IN connector and reconnect it to the DLY'D TRIG IN
connector.
b. Set the Delayed Triggering SOURCE and MAIN
TRIGGERING SOURCE to INT.
c. Check-that all levels of the positive slope of the
intensified zone may be selected for the sweep starting
point as the Delayed Triggering LEVEL control is rotated
Performance Check/Calibration-7B92A
throughout its range, and that triggering occurs at least
3.5 divisions above and below the center horizontal
graticule line. See Fig. 5-2 for reference.
Fig. 5-2. Delayed Triggering level range.
d. Check-set the Delayed Triggering SLOPE to
and repeat part c for the negative slope of the waveform.
e. Check-set the Delayed Triggering SOURCE to
EXT and repeat part c of this step.
f. Check-set the Delayed Triggering SLOPE to +
and repeat part c for the positive slope of the waveform.
A3. Check Low-Frequency Triggering
a. Disconnect the 50-n cable from the DLY'D
TRIG IN connector and reconnect it to the MAIN TRIG IN
connector
5-6
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