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9
4-4. External Trigger Mode
Input of an external trigger permits a high-speed moving object to be captured at the proper
position. Set the rear panel external trigger mode selection switch (i.e., MODE SELECT switch
bits 5, 6, and 7) as illustrated in the diagram below.
The following two modes are available for video timing.
• SYNC-NON RESET Mode
In this mode, the video is synchronized to VD after the trigger input.
When external HD*/VD is input: Sync is to external VD
When external HD*/VD is not input: Sync is to internal VD
*There is automatic determination of external sync or internal sync by the presence or
absence of external HD input.
• SYNC-RESET Mode
In this mode, reset is applied to the internal VD and the video is output after a fixed period
following the trigger pulse.
External Trigger Shutter Speed Setting
The following two methods are available for shutter speed setting.
•
1 pulse trigger mode␣ (Setting by the MODE SELECT switch of the rear panel)
For shutter speed, refer to the table below.
ON OFF
EXT
INT
HD/VD
75Ω
SHT
TRG
M.G
MIN MAX
M GAIN
VIDEO OUT
DC IN/SYNC
FRM
1
O
N
2
3
4
5
5
6
7
8
9
0
6
7
5
6
7
SYNC-NONRESET SYNC-RESET
REAR
MODE SELECT Switch
1
1/100
2
3
4
5
6
7
8
9
0
1
1/250
2
3
4
5
6
7
8
9
0
1
1/500
2
3
4
5
6
7
8
9
0
1
1/4000
2
3
4
5
6
7
8
9
0
1
1/10000
2
3
4
5
6
7
8
9
0
1
1/50000
2
3
4
5
6
7
8
9
0
1
1/100000
2
3
4
5
6
7
8
9
0
1
1/1000
2
3
4
5
6
7
8
9
0
1
1/2000
(unit second)
2
3
4
5
6
7
8
9
0
NOTE
In the external trigger mode, the
camera is automatically set to Field
accumulation regardless of the
MODE SELECT switch bit 9 position.