Photron FASTCAM-PCI R2, Hardware Manual

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FASTCAM-PCI R2 Hardware Manual
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3.4.1.2. Timing Chart for START and RANDOM Trigger Modes with “Reset” in
Effect
When “Reset” function is activated, Expose pos (vertical sync) signal is reset by the incoming
trigger so that the timing of the incoming trigger signal and the start of exposure coincide more
accurately as shown in the below chart.
Note: START trigger mode starts recording when a trigger is received and continues recording
images until the memory is full. RANDOM mode records a preset number of frames at each trigger
and records until the memory is full.
Note: The amount of delay between the incoming and internal triggers greatly depends on the type
of incoming triggers. For example, the delay is over 23 µsec with a contact closure trigger, while it
is only 1.3 µsec with a TTL trigger.
Input Trigger Signal
Expose pos
Rec pos
RT Expose pos
V-Sync pos
TRIG OUT
Internally-delayed
Trigger Signal
Ext Sync Out
General Out
Trigger Out
+5V
GND
+5V
GND
+5V
GND
+5V
GND
+5V
GND
Sensor Reset Period
0.35 ± 0.05 µsec.
Exposure Period
Transfer Period
Exposure Period
Period
Transfer Period
2.5 usec
5 µsec
riod
Delay between trigger entry and start of recording:
TTL: 1.3 ± 0.1 µsec.; Contact: 23.5 ± 0.5 µsec.