YOKOGAWA SL1400 - External Clock Input (EXT CLK IN)

14-3
IM 701240-01E
External Trigger I/O, External Clock Input, and
Video Signal Output
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App
Index
14.3 External Clock Input (EXT CLK IN)
CAUTION
Only input signals that meet the specifications below. Otherwise, undesirable
signal such as excessive voltage may damage the SL1400.
External Clock Input Terminal
TRIG OUT/
EXT CLK IN
Use this terminal if you want to operate the SL1400 using an external clock signal.
This terminal is shared with the trigger output terminal (TRIG OUT).
Specifications
Connector type: RCA jack
Input Level: TTL (0 to 5 V)
Valid edge: Rising edge
Minimum pulse width: 400 ns or more for high and low
External clock frequency range: 1 MHz maximum.
External Clock Input Circuit Diagram
LCX14 or equivalent
EXT TRIG OUT
EXT CLK IN
100 Ω
+5 V
HC245 or equivalent
4.7 kΩ
100 pF