19
EXTERNAL TRIGGERING
}The DP71 can record still images or control a commercially available shutter based on an external trigger signal.
Trigger Input
· The trigger input from external equipment can be used to start still image recording using the DP-BSW.
· The trigger input is detected at the edge, and the positive and negative logics can be switched with the DP Controller.
· The trigger input is not compatible with random triggering. Due to a time lag of 150 to 600 ms after the trigger input, the
exposure start time cannot be synchronized completely
For details on the time lag from the trigger input to the start of exposure, see table below.
· The trigger input is a TTL compatible signal.
V
IH
: 2.0 V (min.). V
IL
: 0.8 V (max.).
Trigger input
Exposure
Readout &
transfer to
PC
150 to 600 msec.
5 msec. or more
Trigger Input Timing Chart (Positive logic)
Table Time Lag from Trigger Input to Exposure Start
Recording Image Size
Preview Status at Trigger Input
Time Lag from Trigger Input to Exposure Start (msec.)
Min.
Max.
4080 x 3072
2040 x 1536
1360 x 1024
680 x 512
OFF
150
400
ON
210
600
680 x 510
(2 x 2)
OFF
150
350
ON
210
500
340 x 250
(4 x 4)
OFF
150
300
ON
210
350
