Tamarisk
®
640
Software ICD
33
4, 5
0x0027
Field Calibrate Command ID.
6
checksum
Frame check sequence.
3.2.2 Field Calibrate – Shutter Disable Set – 0x81
Description
: Enables or disables the TIM shutter. When the shutter is disabled it is forced
closed and the shutter will ignore requests to open for field calibrations. When the shutter is
enabled, it will open and respond to requests to open or close.
Command Format:
Table 50 – Field Calibrate Shutter Disable Set Command Format
Byte
Value
Description
1
0x01
Start of message.
2
0x81
Field Calibrate Shutter Disable Set Command ID.
3
0x02
Parameters length.
4, 5
Unsigned integer
0 = open and enable the shutter
1 = close and disable the shutter.
6
checksum
Frame check sequence.
Response Format:
Table 51 – Field Calibrate Shutter Disable Set Response Format
Byte
Value
Description
1
0x01
Start of message.
2
0x02
ACK Response
3
0x02
Parameters length.
4, 5
0x0081
Field Calibrate Shutter Disable Set Command ID.
6
checksum
Frame check sequence.
3.2.3 Automatic Calibration Toggle – 0xAC
Description
: Toggles the TIM between automatic or manual field calibration modes.
In automatic mode, a field calibration operation will occur at regular intervals.
In manual mode, a field calibration operation will only occur when commanded, other than
range changes. A range change can occur as the camera temperature changes from one
region to another. There are five temperature ranges; each range crossing has hysteresis so
actual changes will depend on current range and next range. These field calibrations are
required to maintain usable video.
The default is to have automatic calibration turned on.
