9 Basic Parameters and Commands
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Example:
Start an automatic calibration process (IRC-320 models with shutter,
j=FB
).
>
k=0[CR]
S=0A
M=87C8
>
In case that the camera is exposed to unsteady operation conditions it might be an advantage that the
automatic data set selection regularly starts at its own. If
k
is not set to 0 the automatic search starts at
approx. each
k
* 256 images. At a frame rate of e.g. 40 images per second the chronological resolution
of the
k
value is approx. 6.4 seconds.
Example:
The automatic correction data selection shall always be started approx. every 1200
seconds (20 minutes): 1200 sec. / 6.4 sec. per count
≈
188 = 0xBC.
>
k=BC [CR]
9.3
Electromechanical Shutter (I)
The IRC-320 models are equipped with an electromechanical shutter that can be controlled with the
command
I
. Use
I=1
to close and
I=0
to open the shutter. Please notice, the shutter is open by
default (power off).
9.4
Temperature Warning (
T
)
The command
T=1
displays the content of the temperature warning register. The lowest order bit has
the same function as LED L3 placed at the backside of the camera housing. In case the value 1 is
output, the temperature of the microbolometer sensor is outside the optimum range. After switching-on
the cold camera this may take place for a time because the stabilization of the sensor temperature takes
some minutes until the set value becomes achieved. In case that the temperature warning remains
active for a longer period, the environment temperature of the camera should be checked. For
information about the starting procedure see chapter 2.4, p. 6.
The camera is equipped with an internal temperature sensor. The temperature can be displayed using
the command
T=2
. The temperature is output as 16 bits value. The 4 most significant bits contain
information about the temperature sensing state. The remaining 12 bits contain two’s complement of
1/16 degrees Celsius.
9.5
Software Version and Correction Data Information (
V
)
By means of the command
V=1
information about the correction data installed in the non-volatile
memory is displayed. The current firmware version and also the serial number of the camera are
output.
9.6
Current Parameter Settings (
Y
)
The command
Y=1
shows the actual set parameter values.
9.7
Show Help Text (?)
The command
?=1
shows a command reference text at the serial terminal. It lists a short description
for each command available in the firmware. Please note that not every command is useful in
conjunction to the IRC-320 camera heads.
VDS Vosskühler GmbH
IRC-320
