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11
Trigger Mode
This camera support 2 trigger modes: 0 and 1.
Trigger mode 0
Trigger mode 0 starts exposure by detecting the edge of
a trigger signal. The exposure time is determined by the
shutter parameter.
Trigger mode 1
Trigger mode 1 controls the exposure time by the width
of the trigger signal pulse. Input a trigger with a trigger
width (Tw) expressed as exposure time = Tw+4.45 µs.
Hardware trigger latency (Tl) from inputting the
hardware trigger from an 8-pin connector to the actual
exposure starting becomes fixed at 7.52 µs, as shown in
the below diagram which expands the exposure time
start part.
Trigger signal input conditions
Input a signal that satisfies the below levels.
Note
Trigger operations such as changing the shutter for each
trigger are not possible with this camera’s trigger mode.
A normal image is output for the first time by trigger
operations with a shutter setting equal to 5 frames or
more. Images for 4 frames cannot be output by the
camera itself. Be sure to take note of this before use.
In addition, with trigger mode 1, images are not output
normally when the jitter component of the trigger signal
itself is large. Keep the jitter component of the trigger
signal itself within 296 ns. Use trigger mode 0 if this
condition cannot be met.
Strobe Control
A strobe control output signal is assigned to the 8-pin
connector. This feature allows strobe equipment
connected to the camera to directly emit light. Output
delay and width can be set for the exposure time.
Camera exposure time can be output without change.
GPIO
A general-purpose I/O port with a 2-bit output and 2-bit
input is assigned in the 8-pin connector.
This port is used for reading information of external
switches and sensors from the camera and controlling
external devices.
Memory Channel
Since this camera is equipped with 15 memory channels
to hold camera settings, it can presave parameter settings
to match scenes.
The applicable parameters include: brightness, gamma,
shutter, gain, pan, trigger mode, trigger delay, strobe
ON/OFF, strobe delay, width, and GPO.
User Free Memory
This camera is equipped with a 256-byte memory space
so the user can write and read data freely.
The written data is retained after the power is turned off.
For example, the user can name the camera and note the
installation conditions using this memory space.
The memory content is retained even if the camera
initialization is performed.
Trigger mode 0 (negative polarity)
Exposure
Trigger
Trigger mode 1 (negative polarity)
Exposure
Trigger
Tw+4.45 µs
Trigger mode 0 (negative polarity)
Exposure
Trigger
T1=7.52 µs
When set to negative
(default setting)
Low-level
DC 0 to 0.5 V
High-level
DC 5 to 24 V
DC 0 V
DC 0 V
When set to positive
DC 0 V
Trigger
(positive polarity)
Exposure
Strobe output signal
Delay
Low-level
DC 0 to 0.5 V
High-level
DC 4 to 5 V
