Input / Output Signal - Hitachi KP-FD140GV Operation Manual

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Note: Special function of reset control trigger
The camera shifts to the output of a normal mode (continuous output) when Trigger input signal passes about 1/3
seconds in the state of High. (The image is output by inputting the Trigger at the VD cycle for this period.)
It returns to the Reset control mode if Trigger input signal becomes Low. However, after becoming Low Trigger input
signal, the period of 50 ms becomes a Readout pulse signal input prohibition period.
High
Trigger input
Low
Shutter time
Readout pulse
Data output
4. VD reset
When external VD pulse is inputted, internal VD is reset. Exposure time is established shutter speed.
VD input
(Low active)
Data output
VD output
(Low active)
NOTE: If the external VD of cycle which does not match the camera operation mode is input, shutter time has an error.

Input / Output signal

1. Input signal
The level of the trigger signal input to KP-FD140GV/F140GV/FD83GV/F83GV/FD33GV/F33GV is as follows.
High level
Low level
Threshold (Low --> High)
Threshold (High --> Low)
2. Output signal
The level of VD/Flash pulse signal output from KP-FD140GV/F140GV/FD83GV/F83GV/FD33GV/F33GV is as follows.
High level
: +5V
Low level
: 0V
More than 10us
1~250ms
more than 10μs
9H
KP-FD140GV/F140GV: 10.0μs
KP-FD83GV/F83GV : 11.2μs
KP-FD33GV/F33GV : 6.8μs
: +5.0 to +24V
:
0 to +0.3V
: 3.7V +/- 0.5V
: 3.3V +/- 0.5V
1/3s approx.
more than 1/self frame rate [sec]
28

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