4-1
IM DL350-03EN
External Signal I/O
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App
Index
4.1 External Trigger Input (TRGI)
CAUTION
Only apply signals that meet the following specifications. Signals that do not meet the
specifications may damage the instrument because of factors such as excessive voltage.
French
ATTENTION
Appliquer uniquement des signaux respectant les spécifications ci-dessous. Les signaux ne
respectant pas les spécifications risquent d’endommager l'instrument, à cause de facteurs tels
que la surtension.
External Trigger Input Terminal (TRGI)
TRGI: External trigger input
This terminal is used when an external signal is used as the trigger source.
Item
Specifications
Input level
TTL (0 to 5 V)
Minimum pulse width
1 μs
Logic
Rising and falling edges
Trigger delay time
Within 1 μs + 1 sample period
Externally synchronized operation
Possible (through the connection of TRGI and TRGO of two DL350s)
Circuit Diagram and Timing Chart for External Trigger Input
Equivalent to
LCX14
100
Ω
4.7 k
Ω
100 pF
+5 V
Trigger delay
TRIGGER IN
(When set to )
Internal trigger
Minimum pulse width
Chapter 4
External Signal I/O