Mega
Plus
®
Model 1.4i
3.7 Trigger
This command enables and sets the polarity of the EXPOSE input on the Digital Interface
Connector on the rear panel of the camera.
TYPE IN:
RESPONSE
EXPLANATION
TRM x
CR-LF
Sets the EXPOSE input signal in the Digital
Connector to positive (TRM P) or negative (TRM N)
logic. Either command enables the expose input
port pins if they were disabled.
TRE x
CR-LF
TRE 0 forces an exposure. TRE 1 resets the
exposure to transfer/idle. Either command disables
the EXPOSE input. Use the TRM command to turn
the EXPOSE input back on.
TRM?
Queries the current EXPOSE polarity.
TRM P
TRM N
TRM O
Means EXPOSE signal is set to positive logic
Means EXPOSE signal is set to negative logic.
Means EXPOSE input port has been disabled. This
can only occur if TRE 0 or 1 has been executed.
TRE?
Queries the current state of the TRIGGER
command.
TRE 0
TRE 1
Means an exposure is taking place.
Means the camera is in the Transfer Frame and
then Idle state.
Sample commands with arguments:
COMMAND
EXPOSE (+) INPUT
ACTION
TRM P
HIGH
Expose.
TRM
P
LOW
Transfer frame and then idle.
TRM N
HIGH
Transfer
frame
and
then
idle
TRM N
LOW
Expose.
NOTE
: Trigger must be set to positive, TRM P, if you are using a frame grabber designed for the
Mega
Plus 1.4i camera.
91000050-002 Revision A
3-5
USER’S MANUAL
Summary of Contents for 1.4i
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