Hamamatsu Photonics C11440-36U Instruction Manual page 21

(1) Normal operation (when the pulse count is set as 1.)
Synchronous readout trigger mode is used for continuous imaging when it is necessary
to control the exposure start timing of each frame from an outside source and also
when it is necessary to secure as long exposure time as possible. In Synchronous
readout trigger mode, the camera ends each exposure, starts the readout and also, at
the same time, starts the next exposure at the edge of the input trigger signal (rising /
falling edge). That is, the interval between the same edges of the input trigger becomes
the exposure time.
External trigger
Readout start signal
0H
1H
2H
・
・
(LAST-1)H
(LAST)H
Sensor readout
Camera data output
Global exposure timing
output
Trigger ready output
Figure 9-6 Synchronous readout trigger mode (Rising edge)
(2) Pulse count
Also in Synchronous readout trigger mode, synchronous readout can be controlled by
specifying, set by command, the number of timing pulses to determine the exposure
time. The following figure shows the exposure timing when the pulse count is set as 3.
External trigger
Readout start signal
0H
1H
2H
・
・
(LAST-1)H
(LAST)H
Sensor readout
Camera data output
Global exposure timing
output
Trigger ready output
Figure 9-7 Synchronous readout trigger mode (Rising edge, Pulse count is set as 3)
*1
Exposure
*1 The memory standby time + Jitter = 10H (≈ 124.4 µs) + up to 1H (≈ 12.4 µs)
*1
Exposure
*1 The memory standby time + Jitter = 10H (≈ 124.4 µs) + up to 1H (≈ 12.4 µs)
C11440-36U Instruction Manual Ver.1.1
Exposure Exposure
Exposure Exposure
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