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14-2
IM 701210-06E
14.2 Trigger Output (TRIG OUT)
External Trigger Output Terminal
TRIG OUT/
EXT CLK IN
A TTL level signal is output when a trigger is activated. The signal level is normally high
and goes low when a trigger is activated.
Specifications
Connector type:
RCA jack
Output level:
CMOS level (0 to 5 V)
Logic:
Falls when the trigger is activated, rises after completing acquisition
Output delay time:
Within (1
µ
s + 1 sample period)
Output hold time:
200 ns or more
Trigger Output Circuit Diagram and Timing Chart
LCX14 or equivalent
EXT TRIG OUT
EXT CLK IN
100
Ω
+5 V
HC245 or equivalent
4.7 k
Ω
100 pF
Trigger occurrence (time of trigger position)
Trigger Output
Internal trigger
Output hold time
Output delay time
Low Level/High Level Hold Time
H
L
Trigger Output
Post time
Trigger occurrence
Trigger occurrence
Pre-
trigger
Post-trigger
Post-trigger
Pre-
trigger
Waveform
acquisition
Trigger
Trigger