View source for HRS DAQ for Q2, Optics

The HRS DAQ is used for Spot++, Optics, for measuring Qsq, and background studies. 
Except for Spot++, these activities are expert driven and not part of normal production.

If you are looking for Spot++ instructions:  https://prex.jlab.org/wiki/index.php/Spot%2B%2B

Here is a checklist for switching between counting mode and integrating mode.

https://prex.jlab.org/wiki/index.php/Switching_Modes

L-HRS DAQ runs on adaq3 ........ R-HRS DAQ runs on adaq2

Account: adaq

CODA will normally be running already. But, to start CODA from scratch on either HRS: "startcoda"

The running config is usually LeftHRS or Righthrs, but there may be other configs for special purposes.

==Triggers ==

How to set Prescale factors: Type "prescaleL" or "prescaleR" and use the obvious GUI.

Scalers display (xscaler): Login to aonl1 as the a-onl account and type "xscaler", then do what it says to do. 
Note that xscaler is normally running on the hapc2 computer above the adaq1 console.

<pre> 
== Triggers for PREX ==

T1 = S0A & S0B
T2 = S3
T3 = S0A || S0B
T4 = Upstream Quartz
T5 = Downstream Quartz
T6 = ((S0A & S0B) & S3) = T1.and.T2
T8 = Clock -- 103.7 kHz on L-HRS, 1024 Hz on R-HRS

Note about prescale factors
Max prescale factors: ps1-4=16777215; ps5-8=65535
T9-12 cannot be prescaled but any trigger can be turned off with ps=0
</pre>

== <font color="magenta">recovery from problems</font> ==

Sometimes the DAQ doesn't work, particularly after a long down time.  The easiest way to recover is to reboot the ROCs
and type "startcoda" from the appropriate account ("adaq") on the appropriate computer (R-HRS on adaq2, L-HRS on adaq3).
To reboot the ROCs the easiest way is to type "reboot" on the vxWorks prompt of each login (the x-terms with names 
of the ROCs in their title).  Another way is to go to the magnet epics screen (Hall A tools) and find the "crate resets"
button.  Note, both fastbus crates in each HRS are reset with one button.  For the ROC20/31 VME crate its usually good
enough to "ctrl-C" out of it and do "startcoda".  If you really have trouble, call Chandan Ghosh, Bob Michaels, or
Alexandre Camsonne -- in that order.

== <font color="red">ROC remote power cycle</font> ==

* For LHRS (roc31) remote power cycle: Use IP: 129.57.192.5 (this will open a web page with crate control tabs, this will ask for user and password).
* For RHRS (roc20) remote power cycle: telnet hatsv3 2007;
# Type 'CAEN'. (Nothing will display on screen at you type).
# A menu with options to control the Crate will appear. Type 'C' to view the status of the crate.
# If the crate is off, type the letter 'o' to turn it on.
# If the crate is ON but is stuck and needs rebooted : type "o" to turn crate OFF. After 20 seconds, type "o" to turn it back ON
# Type 'crl+]' to exit the ROC.
# Type 'q' at the "telnet>" prompt.
*For Fastbus crates (LHRS - ROC3,ROC4,ROC5 & TS0; RHRS-ROC1,ROC2, ROC6,TS11): Go to 'Hall A general Tools'. Open 'Crate Resets' under 'MISCELLANEOUS' tab.Then click to 'click to reset' on both 'Lower Fastbus AC' and 'Upper Fastbus AC' tabs for a particular arm.

==Even more detail ==

https://wiki.jlab.org/tegwiki/index.php/Tritium_DAQ_page ... lot of details (some not applicable, though)

https://wiki.jlab.org/tegwiki/index.php/Hut_Remote_Power_Map. ... remote power cycling.  Ask the above experts for pw.

[[Category:DAQ]]