Tektronix 47E5A - Trigger

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Fig. 4. Trigger controls, connectors, and indicators.
lamp lit indicates intervals per second . If the duration of
one event is being measured , the Readout and Scale
Fa c tor Lamps indicate frequen cy. The 1/ ms lamp in-
dicates kHz, the 1//.1s lamp indicates MHz, and no lamp lit
indicates Hz.
24. /.:.;. TIME-Used in conjunction with the DELAY
TIME POSITION control in the TIME and 1/TIME func-
tions . The /.:.;. TIME control moves only the time-
measurement point. The DELAY TIME POSITION control
moves both the reference point and the time-
measurement point. With the time-measurement point to
the
left of the reference point the Readout indicates a
negative
time difference .
NOTE
You can modify your instrument to make the OELA Y
TIME POSITION control move only the reference
pOint. The procedur e for making this modification is
located in the Maintenance section of the OM44
Service manual .
TRIGGER
25. TRIG MODE-Determines the mode of trigger
operation for A Sweep
AUTO: Sweep is initiated by the applied triggersignal.
In the absence of an adequate trigger signal , or if the
trigger repetition rate is less than about 20 hertz , the
sweep free runs and provides a bright reference trace .
475A/DM44 Operators
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