The 3 patrol camera units in each LgswUnit
are based on AVT GC1350 cameras. The 12V power supply is installed in the MoCon
. The ethernet cable is connected to the ElectronicRackLgsw
List of devices of this kind
These cameras show problems with booting at low temperatures (below about 0C). This is one of the reason why a liquid heat exchanger is used to keep the temperature of the cameras always above zero. These cameras must be connected to the RegulatedCoolingLine
. We have evidences that an higher voltage in the power supply can mitigate the issue of boot at low temperature. The power supply in the MoCon
is set at 14V (??).
In case a camera is refusing to start, it can be put in simulation to be able to continue with the Power Up process and check the other sub-systems. To do that, follow these instructions (from IT#8335
for the SX Yellow Patrol Camera):
- In the corresponding LGSW computer, replace the original cfg file with a "sim" version (if available). The location of the config files is /home/argos/apps/etc/.
- For example: ln -s argos_sx_sim_patrol_camera_yellow.cfg argos_sx_patrol_camera_yellow.cfg
[argos@sx-lgsw etc]$ ls -ln argos_sx_patrol*
-rw-rw-r-- 1 500 500 1076 Mar 12 2020 argos_sx_patrol_camera_blue.cfg
-rw-rw-r-- 1 500 500 1149 Mar 12 2020 argos_sx_patrol_camera_red.cfg
lrwxrwxrwx 1 500 500 37 Apr 13 16:05 argos_sx_patrol_camera_yellow.cfg -> argos_sx_sim_patrol_camera_yellow.cfg
-rw-rw-r-- 1 500 500 1096 Mar 12 2020 argos_sx_patrol_camera_yellow.cfg.real
- Restart all the LGSW processes and try Powering Up again.
If a sim version is not avaiable for the specific camera, simply copy an existing one and change the entries that are camera-specific. The sim cfg file requires a fits file with a fake image, make sure that such file exists. The one used on SX LGSW is called "argos_sim_acquired_laser_on_patrol_cam.fits"
Installation and maintenance
This device doesn't require to upload any firmware. The only required configuration is setting the IP address. See AvtCameraSoftware
In case of malfunctioning one can try to use alternative software: the AVT Viewer is available in AvtCameraSoftware
For testing and easy-use without a complete ARGOS sw environment (e.g. from a laptop) there is also a custom developed IDL package to operate AVT cameras available in AvtCameraSoftware