DQCH: DAQ Channel Status

                              Titles:  DQCH
                              =============
 
Contact:  John Roberts / Mark Howe
 
 
Revision History:-
================
 
3.02    N. West         First version. Add 75 Ohm, Qinj, N100, N20.
                        Minor comment changes.  Add NOT_OP and BAD.


 
Titles Files
------------
 
ccc_info.dat
 
 
Verification
------------
 
 
Description
-----------

Bank Number:  Crate number
 
Contains a 32 bit status of each channel in the crate.  This bank together with
DQCR replaces the CRON/VTHR/VRLY banks.
 
 
Data Words
----------
 
        Fixed length Database Header.  See titles_dbhdr.html

    Data types: B(bit), I, F, D(double), H(hollerith 4 char)

 Word  Type  Mnemonic      Description

              KDQCH_
 
 1..10    I                Header.  Currently unused (all words zero)
    11    I   TABLE        Start of channel status table. For channel i where:-
                              i =  32*card + channel
                           status stored in word KDQCH_TABLE + i

The structure of the channel status word is as follows, unused bits are all 
zero. 
 
 Bit   Mnemonic        Description

       KDQCH_B_

   0   PMT_CABLE       PMT cable in(0), out or unknown tube type (1)
   1   PMTIC_RESISTOR  PMTIC channel resistor present(0), not present(1)
                       NB SHaRC has no way of knowing if the resistor on 
                       particular channel has been cut and hence always 
                       assumes present.
   2   SEQUENCER       Channel sequencer enabled(0), disabled(1)
   3   100NS           100ns trigger enabled(0), disabled(1)
   4   20NS            20ns trigger enabled(0), disabled(1)
   5   75OHM           75 Ohm terminator OK (0), blown (1)
   6   QINJ            Qinj OK (0), malfunctioning i.e. Large/Small/Bad (1)
   7   N100            100ns trigger OK (0), dead (1)
   8   N20             20ns trigger OK (0), dead (1)
   9   NOT_OP          operational (0), not operational (1)
  10   BAD             logical OR of bits 0-9
  16   VTHR            V threshold (8 bits)
  24   VTHR_ZERO       V threshold zero (8 bits)