[subexp-daq] Question: what is GEOM?

[Weber, Guenter Dr.]

Dear friends,


in my DAQ, I have three modules that are defined in main.cfg as follows:


    # ADCs
    CAEN_V785(0x11110000) {
        threshold = (0 {32})
    }
    CAEN_V785(0x44440000) {
        threshold = (0 {32})
    }
    # TDC
    BARRIER
    CAEN_V1190(0x22220000) {
           blt_mode = noblt
           edge = leading
           resolution = 100 ps
           deadtime = 5 ns
        # with 100 ps resolution, max window size: 50 us
           GATE {
            time_after_trigger = -1us
            width = 2us
           }
    }


In the corresponding *.spec file, the data is matched via this commands:


    adc[0] = VME_CAEN_V785(geom=1, crate=0);
    adc[1] = VME_CAEN_V785(geom=2, crate=0);
    b2 = BARRIER();
    tdc = VME_CAEN_V1190(geom=3);

My question is now, where is the GEOM number coming from? How do the modules 'know' that they should have GEOM numbers 1 to 3?



Thank you very much!



Best greetings
Günter


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