Helicity signals in the electron arm - November 5, 1998
=======================================================

LOGIC
-----

                CAMAC                   NIM              NIM
              LeCroy 2323A           LeCroy 222         Phillips
              Gate & Delay           Gate & Delay       fan-in/fan-out
               Generator              Generator         for out signals below

                                   +-----------------+
              +--------+           | GATE & DELAY    |  +---> ADC,#62,Slot 25
              | Delay  |           |                 |  |
 (h+) ---+----| 200 us |---------->|o start     out o|--+---> SCALER (#5)
         |    |        |     +---->|o stop      ---  |
         |    +--------+     | +-->|o blank out-bar o|------> CEAN/SCALER veto
         |    .        .     | |   +-----------------+
         +-----------------+ | |   .                 .
              .        .   | | |   .                 . 
              .        .   | | |   .                 .
              .        .   | | |   .                 .
              .        .   | | |   .                 .
         +-----------------|-+ |   .                 .
         |    .        .   |   |   +-----------------+
         |    +--------+   |   |   | GATE & DELAY    |  +---> ADC,#63,Slot 25
         |    | Delay  |   |   |   |                 |  |
 (h-) ---+----| 200 us |---|---|-->|o start     out o|--+---> SCALER (#6)
              |        |   +---|-->|o stop      ---  |
              +--------+       +-->|o blank out-bar o|------> CEAN/SCALER veto 
                               |   +-----------------+
                               |
(GO/rungate NIM-bar fanout) ---+


ADC-Signal-wiring
=================
          
 e-Spectr.
 Patch panel:  TOP                 BACK                      FRONT
               ---                 ----                      -----

              Betty           Betty   Eunice'          Eunice'   *** ADC ***
 from h+ ---> C-15 ---//--->  C-15 --> D-15  ---//--->  D-15 --> Slot 25,#62 
 from h- ---> C-16 ---//--->  C-16 --> D-16  ---//--->  D-16 --> Slot 25,#63
 


from Steffen Strauch
 
note: RG 11/17/98 
      h+ and h- scaler channels were originally set to 6 and 7,
      but were switched to 5 and 6 on ~ Nov 6.