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Hitachi HV-F31F User Manual

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2. DC IN/SYNC input and output (DC IN/SYNC connector)

1) External HD/VD signal input

HD/VD: 2 to 5 Vp-p, Negative

2) External trigger signal input (Photo-coupler)

low 0 Vdc, high 24 Vdc

3) Flash signal output

low 0 Vdc, high 5 Vdc

4) Power supply input

12 V rated
(Stable operation at 10.5 to 15 VDC (ripple and noise absent))

3. External trigger input (TRIG IN connector)

low 0 Vdc, high 2 to 5Vdc








TRIG (H)

TRIG (C)

2.5K ohm

Photo-coupler input part

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