How to run the RCU - DRORC - Busybox setup

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How to run the RCU - DRORC - Busybox setup

This shall be a step by step introduction on how to operate the setup and test Busybox firmware. For now this will be a collection of the necessary steps, but in a later stage the configuration part will become more automated.

You need access to the following systems: - DRORC PC - RCU - Busybox - Local trigger unit (LTU)

Setting up the system and getting ready to take data:

More general stuff

  1. Log into the Drorc machine as the date user.
  2. Log into the LTU: "ssh -X ltu@vme1".
  3. Log into the RCU dcs board: "ssh dcs0031".
  4. Log into the Busybox DCS board: "ssh dcs0055".
  5. Start the infoBrowser on the drorc machine with the command "infoBrowser".

Configuring the RCU

On the RCU, execute the script /etc/boot/S40configure.sh. This does several things: - turning on the Front End Cards - Setting the correct L2 Latency - Switching to LTU trigger

Then, as the date user from the drorc machine, execute the alias 'conf-fec'. This configures the RCU and FECs via the DDL for Data readout, but unfortunately also for Software triggers.

Therefor, execute the S40configure.sh script on the dcs0031 once again.

LTU stuff

On the LTU, execute 'vmecrate ltu'. This should pop up two windows on your machine. In the ltu window, click on Configuration-> TTCInit, and then Configuration->LTUInit. Click on 'CTP Emulator' to open the CTP Emulator window. Click on 'click here to choose sequence', and choose the 'L2a.seq'. Don't forget to click 'Load sequence'.

Sending triggers: After you clicked on 'start emulation' you can send triggers in two ways: - Single triggers, for this just click on 'Generate SW Start signal(s)'. - Or triggers with a certain rate. For this, click on 'not selected' and choose BC. You can switch the BC downscaling hex value to a decimal value by right clicking on the value. Rates can also be entered in a more convenient manner than the downscaling factor:

BC downscaling factor is an integer number (32 bits) giving the number of BCs (25ns) between 2 triggers. Examples: 0 -> BC rate (40 Mhz) 1 -> 40/2 Mhz rate 4000-> generate 1 Start signal per 100 micsecs ... or use: s (seconds, ms (miliseconds, us (microseconds), for period or: hz (hertz), khz (kilohertz), mhz (megahertz) for rate. 3s -> 3 seconds 10 ms -> 10 miliseconds period 3 khz -> 3 khz rate



Busybox stuff

Datataking with date