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TRIGGER IN 3
• This input is isolated via an optocoupler.
• A logic low input is a voltage from -30 to 1V, and a high-level input is a voltage
of 3 to 30V.
• Voltages between these ranges (1 to 3V) are undefined.
• This input has built-in resistors to correctly drive the optocoupler and is
protected from differential voltages up to 30V DC/RMS AC and +/- 50V peak.
• Trigger In 3 is rated for SELV (Safety Extra Low Voltage) circuits only, up to a
maximum common mode voltage of 60V above ground.
DANGER: The isolated input is not rated for safety isolation. Never use any of these inputs to
connect directly to mains-reference circuits. If triggering from AC mains is needed, external safety
isolation (such as a transformer) is required.
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