-27000
left edge
of screen
P I
0
SO00
displayed record
500Opts, 50 .us
digitized record, 32000pts, 320)JS
It is important to realize that at the fastest sampling rate of I0 nsec
per point, a record always covers a time interval of 320 ~sec,
regardless of the time base (which can range from 50 nsec/div to
20 psec/div). However, the trigger point is always interpreted relative
to the left hand edge of the screen, i.e. relative to the address point
0 of the record.
Example:
Compare a time base of 20 usec/div to a time base of I ~sec/div,
both with a pre-trigger of i0 percent, i.e. 1 division to the
right of the left edge of the screen.
20 p s/div
-12000
left edge
of screen
trigger point
displayed record, 20000 pts, 200 .us
digitized record, 32000pts, 320 ~s
2000C
-31000
311ps
JO~trigger
left edge ~/pomt
of screen
1000
displayed record,
1000 pts, I0 ps
digitized record, 32000 pts,320 /Js
7-49
Remote Operations
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