Photron Fastcam MC1, Hardware Manual

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Chapter 3. Recording
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3.10. Input/Output Signal Types
Many signals can be input and output with the FASTCAM MC1 using the BNC connectors .
These signals are listed below.
A signal other than the specified signal must not be input to the various connectors.
Use extreme caution as there is a risk of damage to both devices, the input device and the output device.
3.10.1. TRIGGER IN Connector
The input signal type is selectable TTL or SW, with the slide switch on the processor.
●
When the slide switch is set to "TTL":
The system recognizes an external TTL signal as a trigger during the READY or ENDLESS
recording state. Starting and stopping recording (in the selected recording mode) is controlled with
this signal.
Input voltage is +4.5V to +12V, positive or negative polarity, pulsewidth is 50 ns or greater.
Operating current is 10 mA recommended, 30 mA maximum.
●
When the slide switch is set to "SW":
This trigger is input during the READY or ENDLESS recording state by contact between the BNC
connector’s shield and a center pin (switch closure). The center pin normally has voltage flowing
through it. Use caution to avoiding contact with other pins.
3.10.2. SYNC IN Connector
The system recognizes a TTL signal from other devices as a synchronization signal.
Input voltage is +4.5V to +12V, positive or negative polarity, pulsewidth is 50 ns or greater.
Operating current is 10 mA recommended, 30 mA maximum.