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4-3. Reset Restart
Input of an external reset-restart signal (VD) permits one screen of information to be output at
an arbitrary timing. To set this mode, set the external trigger mode selection switch (i.e., MODE
SELECT switch bits 5, 6, and 7) as illustrated in the diagram below.
Long Term Exposure
When the camera is used and sufficient sensitivity cannot be obtained for the reset-restart
function under normal operating conditions, or when observation of the trail of a moving
subject is desired, the exposure time can be extended to allow high-sensitivity images to be
obtained. To achieve this, please input from an external source a VD signal that has an ex-
panded VD pulse and VD pulse interval.
Input Timing Chart Example
ON OFF
EXT
INT
HD/VD
75Ω
SHT
TRG
M.G
MIN MAX
M GAIN
VIDEO OUT
DC IN/SYNC
P.S
1
O
N
2
3
4
5
5
6
7
8
9
0
6
7
Reset restart
Rear
MODE SELECT Switch
External HD
IN
External VD
IN
(Internal VD)
VIDEO INDEX
VIDEO OUT
About 1H
V reset
Exposure period
External VD interval: more than 1V
Exposure period Exposure period
1V 1V
About 1H
V reset