4M30 Camera User’s Manual
28
DALSA
03-32-10030-04
Write Integration LS
Byte
Write Integration
Center Byte
Write Integration MS
Byte
Command
Value
Command
Value
Command
Value
Binary
1000 1010
0001 0000
1000 1011
0010 0111
1000 1100
0000 0000
Hex
8Ah
10h
8Bh
27h
8Ch
00h
Programmed Integration/SMA Trigger
For external SMA controlled triggering with a programmed integration time, a TTL rising edge on
TRIGGER IN connector triggers the camera to acquire one frame of data. Integration begins
within 175 ns after the rising edge and stops when the programmed integration time has completed.
After that single frame acquisition, the camera outputs the just acquired frame and “re-arms”, thus
waiting for a new External Trigger signal to trigger a new frame acquisition. The camera is
“armed” when the read out of the acquired frame is completed
. No additional rising edges, or
triggers, should be allowed during the image acquisition or frame read out
.
When the camera is in External Trigger Mode, the MODE LED will be illuminated on the camera
back to indicate the camera is expecting a signal on the TRIGGER IN connector or Serial Trigger
bit [0] of the Control Register.
Because this signal is internally OR’ed with the Serial Trigger bit [0] of the Control Register, care
must be taken to ensure the bit [0] of the Control Register is not changed from logic 0 to 1 while
triggering with the TRIGGER IN connector.
Programmed Integration/Serial Trigger
For external serial controlled triggering with a programmed integration time, a TTL rising edge on
bit [0] of the Control Register triggers the camera to acquire one frame of data. Integration begins
within 175 ns after the rising edge and stops when the programmed integration time has completed.
After that single frame acquisition, the camera outputs the just acquired frame and “re-arms”, thus
waiting for a new External Trigger signal to trigger a new frame acquisition. The camera is
“armed” when the read out of the acquired frame is completed
. No additional rising edges, or
triggers, should be allowed during the image acquisition or frame read out
.
When the camera is in External Trigger Mode, the MODE LED will be illuminated on the camera
back to indicate the camera is expecting a signal on serial bit [0] of the Control Register, or the
TRIGGER IN connector.
Because this signal is internally OR’ed with the TRIGGER IN input, care must be taken to ensure
the TRIGGER IN signal is not changed from logic 0 to 1 while triggering with bit [0] of the
Control Register.
External Integration/SMA Trigger
When in External Integration/SMA mode, a TTL rising edge on the
TRIGGER IN
signal triggers
the camera to acquire one frame of data. Integration begins within 175 ns after the rising edge and
stops within 200 ns after the falling edge. After that single frame acquisition, the camera outputs
the just acquired frame and “re-arms”, thus waiting for a new External Trigger signal to trigger a
new frame acquisition. The camera is “armed” when the read out of the acquired frame is
completed
. No additional rising edges, or triggers, should be allowed during the image
acquisition or frame read out
. This means in this mode TRIGGER IN necessarily controls both
integration and frame rate.
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