Fast Guide to the BDC HV control
(maintained by F.-P. Schilling, fpschill@mail.desy.de, last updated on 17/02/2000)
http://www-h1.desy.de/h1/www/h1det/tracker/bdc/shiftin/fast.html
Status of BDC HV Things to be done by shift crew
1) HV is on and everything is OK

- HV switch is green and points to ON

- All coloured controls are green, none are red
 

- None
2) BDC was switched off by the interlock with CJC1, because CJC1 tripped or was switched off (or because of a failure of the interlock)

- HV switch is still green and points to ON

- The control labeled "HV-endvalue" and the big square indicator have switched from OK (green) to ERROR (red)

- All 80 channels are marked red (off) in the top row of the "HV status" bar
 

- Wait until CJC1 is back on for at least 3 minutes

- Switch the BDC back on by clicking on the button labelled "Reactivate"

- If this does not work - call the expert

Note: If there is a "Gas System 3" alarm, the BDC - can't be switched on 

3) The BDC tripped alone while the other trackers are still on:

- HV switch is still green and points to ON 

- The control labelled "HV-endvalue" and the big square indicator have switched from OK (green) to ERROR (red)

- The tripped channels are marked red (off) in the top row of the "HV status" bar

- If all 80 channels are off: failure of of interlock > Goto 2)
 

- Leave it as it is and call the BDC expert

- Do NOT try to reactivate the tripped channels

4) LAN connection interrupted

- All controls on BDC HV program are green/OK

- Messages "BDC Mac appears dead" or "Unknown" on Tracker Mac and/or System Supervisor
 

- Click on the "LAN reset" button on the panel of the BDC HV program

- If this does not help: reboot Mac (307/B18 right)

5) Anything not described above - Call the BDC expert 
6) General  - Try pressing "Acknowledge" in case of error messages