Changes
SHOC
,/* User's troubleshooting guide */
=== User's troubleshooting guide===
* '''Camera won't switch on:''' If the camera display times out when trying to switch on, you will need to restart the services. To do this:
** Open a terminal. This is available from the top menu or side menu of the thin client in the warm room. If the web browser is full screen, push 'F11', and you should then see the top menu bar. Once the terminal window appears, ssh to the instrument by running the command
ssh shoc74in@shoc74in.suth.saao.ac.za
or
ssh shoc40in@shoc40in.suth.saao.ac.za
When prompted for the password, use the password for the 74in or 40in user.
** In the terminal, type
restart_services
You will again be prompted for the password. The various services comprising the instrument will then restart. This lasts a few seconds a few seconds.** Return to the web browser, and reload the page, then tryh try to star start the cameraa camera again.
** It may be necessary to restart the services a few times before you can start the camera.
* '''Acquisition doesn't start:''' Check on the GPS tab that the trigger signal has been activated. If it has, but the camera is still not taking images, try stoppingthe camera, resetting the GPS trigger to a time in the near future, and try again. Sometimes, it appears that the GPS trigger signal is not being sent (despite the software reporting that it is). The current acquisition should be stopped and restarted (because when the acquisition is started, the time the POP signal will start is recorded and will apear in the fits headers - so stopping and starting the acquisition will ensure that the correct POP time is used). Note that the index willl be incremented when doing this. To avoid this, you can rewind the increment by 1, in the advanced tab. Make sure you have no data that will be overwritten.
*''' Acquisition doesn't finish:''' Sometimes it appears that the camera does not ever leave the acquiring state (despite all images in the kinetic series having been obtained). It may in this case be neccessary to restart the server, manually edit the FITS files to include the filter and timing informations, and to then copy them to their final destination. The server may be restarted running the command "restart_services" from a terminal. The data is spooled to a directory under /data/spool/, based on the date, the sequence number and the time the acquisition started. In this directory is the data file, data.fits, and file containing other acquisition parameters, info.txt. The latter may be used to update the FITS header. The procedure is as follows:
** Rescue your data using the data rescue utility, as described in the section Rescuing Data.
