Keithley 486 Quick Reference Manual page 24

Trigger Interval
Determines the time period between individual readings
when the instrument is in the multiple trigger mode.
The trigger interval can be set from 1Omsec to
999.999sec.
Trigger Delay
Time from the trigger point until the unit takes a reading.
In the multiple trigger mode, the delay period affects only
the first conversion; however in the one-shot trigger
mode, the delay period affects every conversion.
The Model 4861487 can be programmed for adelay inter-
val from Osec to 999.999sec in 1 msec increments.
Trigger Sources
Available trigger source selections:
TRIG SRC EXTERNAL
TRIG SRC
OPERATE
TRIG SRC
BUS X
TRIG SRC GET
TRIG SRC
TALK
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