Robert Michaels, rom@jlab.org, Jefferson
Lab Hall A, updated Aug 8, 2007
Here is a checklist for experts only to switch the DAQ from coincindence mode (TWOARM) to 2-DAQ mode. The former is defined as having one trigger supervisor (TS) on R-HRS which controls all the crates; the latter has two independent TS, L-HRS and R-HRS, and hence 2 DAQ systems for singles mode.
| STEP | PROCEDURE |
| 1 | L-HRS: Switch TS RS485 cable at Fastbus ROC4 |
| 2 | L-HRS: ts_scaler.crl RLSWITCH = LOCAL vs RARM. |
| 3 | R-HRS: Modify boot scripts (adev vs a-onl), reboot |
| 4 | L-HRS: Move origin of L1A |
| 5 | L-HRS: Move origin of scaler gates |
| 6 | a-onl: Modify runend.tcl, halla_scaler_process.tcl and last_scaler |
| 7 | atrig: Default trigsetup to coinc or 2daq |
| 8 | datamon deadtime (scdtime.c switch) |
| 9 | L-arm: runTypes pedrun vs pedrunL |
| 10 | auto BTA (1-arm vs 2-arm). |
| 11 | Download the trigger & answer obvious questions |