= SPEC_init_det_setup =

{{{
// Purpose       : Prepare for Spectroscopy
//
// Author        : H. Feuchtgruber
//
// Arguments     : none
//
// CRE setup according to the DEC/MEC User's Manual
//
// 1. DMC_SWON_B_DEC to switch on the DEC
// 2. Wait 8 seconds to get the 1355 connection between DEC and CPU board
// 3. Send the complete set of default parameters.
//    First send a DMC_WRT_B_SPEC_PAR command with these values
//    (in hex: 20-8-18C-0-0-EA60-0-0).
// 3a. Then, send a DMC_SET_PAR_B_SPEC to really send the parameters to the DEC.
// 4. DMC_SWON_B_SPEC to switch on the detector array
// 5. Wait 15 seconds to let the switch on procedure run and all voltages
//    become stables
// 6. Then, to activate the CREs (signal SELECT on the CREs), send the first
//    3 parameters, i.e. DMC_WRT_B_SPEC_PAR command with these
//    values (length: 3, values in hex : 20- 8-18E).
// 6a. Then, send a DMC_SET_PAR_B_SPEC to really send the parameters to the DEC.
//    Note: with this command, we set bit1 to 1 (activate CRE). Bit0
//    has been set to 1 by the DMC_SWON_B_SPEC command but,
//    bit0 is not commandable through the DMC_WRT_B_SPEC_PAR.
//    The only way to switch on/off the detector array is to use the
//    trigger commands.
// 7. Then, you should set the bias voltages by writing the first 4 or 5
//    parameters of the block. Make sure to copy the latest values you use
//    for the first 3 parameters.
//
// Description   : Sets CRE parameters (see list of arguments).
//                 User specifies cre_ctrl_xx as:
//                 cre_ctrl: 256 to set "sync width=2"
//                           128 to set "T sensor on"
//                             2 to set "select"
//                             1 power on (not relevant here)
//                 Script adds capa_xx to cre_ctrl_xx
//                     xx_cre_ctrl = capa_xx + cre_ctrl_xx
//                 xx_cre_ctrl gets written to the CRE register
//                 Must be called on a stopped SPU. This procedure will
//                 neither stop nor start SPU (call SPEC_spu_reset and
//                 SPEC_spu_setup respectively for that)
//// Description   : Section "Initial detector setup" from SetupSpectroscopy.tcl,
//                 v2.8
//
// Comments      :
//
// Version       : 0.4
// History       : 0.1  3-jul-2006 initial version
//               : 0.2 10-nov-2006 TM: inclusion of the CRE selection
//                 0.3 16-nov-2006 Revision for copy to OpDataBase
//                 0.4 11-feb-2008 DAC removed two spurious debug print
}}}
Input variable(s):
{{{
procedure SPEC_init_det_setup {
}{
}}}