JLab has built their own Flash ADC (called the F250)

It has a mini trigger connector which requires another VME board to convert from the standard lemo input to this mini input.

Addressing

JLab's F250 flash ADC will be used to measure the NaI output

ADdress is

Address
Pin	Switch	bit
A12	on/closed	0
A13	on	0
A14	on	0
A15	on	0
A16	on	0
A17	off/open	1
A18	off	1
A19	off	1
A20	on	0
A21	off	1
A22	off	1
A23	off	1

Module address = 0xee0000 = 111011100000000000000000 d

If I want 0xaa0000 = 101010100000000000000000 d

Documentation

Data Format

File:JLab F250 ADC V1.2 DataFormat.pdf

Readoutlist example

___________________________________________________________________
|                                                                   |
|  Jefferson Lab                      Tel:  (757) 269-7159          |
|  Riad Suleiman                      FAX:  (757) 269-5520          |
|  12050 Jefferson Ave                                              |
|  Suite 500                                                        |
|  Newport News, VA 23606             Email:suleiman@jlab.org       |
|  Text Pager: 7572893892@messaging.nextel.com                      |
|  http://www.jlab.org/~suleiman                                    |
|  Home: (757) 865-0355                                             |
-------------------------------------------------------------------

#  Source for generic VME readout using a
#  TJNAF trigger supervisor interface register (TIR)
#  as a source for external interrupts
#
#    David Abbott, TJNAF 1996

readout list VME1
maximum 16384,400
vme readout
#polling
#ts control


const TIR_ADDR = 0x0ed0
const FADC_ADDR = 0xee0000
const FADC_BLOCK_MODE = 1
const MAX_FADC_DATA = 4000

extern int bigendian_out;
extern int fadcID[20];
int FA_SLOT;


begin download

 variable res

# If the ROC is sending data to Little-Endian EB
# e.g. a x86 Linux CPU then bigendian_out = 0.
# Unless the ROC is also running on a Little-Endian
# machine. Then set bigendian_out=1.
 bigendian_out = 0;


# Setup TIR
 tirInit(TIR_ADDR);

# Initialize FADC library and Modules for standalone
# and Front Panel Triggers
faInit(FADC_ADDR,0,1,0xea13);
FA_SLOT = fadcID[0];

 log inform "User Download Executed"

end download

begin prestart

 log inform "Entering User Prestart"

 init trig source VME
 link async trig source VME 1 to usrtrig and usrtrig_done
 event type 1 then read VME 1

# Assume FADCs have been Initialized at boot or in download
# Setup FADC Programming
 faSetBlockLevel(FA_SLOT,1);
# for Block Reads
 faEnableBusError(FA_SLOT);
# for Single Cycle Reads
#  faDisableBusError(FA_SLOT);

# Set All channel thresholds to 0
 faSetThreshold(FA_SLOT,0,0xffff);


# Setup option 1 processing - RAW Window Data     <--
#       option 2            - RAW Pulse Data
#       option 3            - Integral Pulse Data
# Setup 120 nsec latency (PL  = 30) 
# Setup  80 nsec Window  (PTW = 20)
# Setup Pulse widths of 36ns (NSB(3)+NSA(6) = 9) 
# Setup up to 1 pulse processed
# Setup for both ADC banks(0 - all channels 0-15)
 faSetProcMode(FA_SLOT,1,40,38,3,6,1,0);


# Print out status
 faStatus(FA_SLOT,0);

 log inform "User Prestart Executed"

end prestart

begin end

 CDODISABLE(VME,1,0);

#FADC Disable
 faGDisable(0,0);

#FADC Event status - Is all data read out
 faStatus(FA_SLOT,0);

 log inform "User End Executed"

end end

begin pause

 CDODISABLE(VME,1,0);

 log inform "User Pause Executed"

end pause

begin go

 variable outval

 log inform "Entering User Go"

# Enable FADCs
 faGEnable(0,0);

 taskDelay(1);

# Send Sync Reset to FADC
 faSDC_Sync();

 taskDelay(1);

 CDOENABLE(VME,1,0);

end go

begin trigger usrtrig

variable ii, stat, csr

rol->dabufp = (long *) 0;
open event type EVTYPE of BT_UI4

%%
int nwrds=0;
/* Check if a Block of data is available */
for(ii=0;ii<100;ii++) {
   stat = faBready(FA_SLOT);
   if (stat>0) {
     *rol->dabufp++ = ii;
     break;
   }
}
if(stat > 0) {
  nwrds = faReadBlock(FA_SLOT,rol->dabufp,MAX_FADC_DATA,FADC_BLOCK_MODE);
  if(nwrds<=0) {
     logMsg("ERROR: FADC Block Read Failed - Status 0x%x\n",nwrds,0,0,0,0,0);
     *rol->dabufp++ = 0xda000bad;
     faClear(FA_SLOT);
  } else {
     rol->dabufp += nwrds;
  }
}else{
  *rol->dabufp++ = 0xfa000bad;
  logMsg("ERROR: NO data in FADC  datascan = 0x%x\n",stat,0,0,0,0,0);
  faClear(FA_SLOT);
}

/* Check that there is no data left */
 stat = faDready(FA_SLOT);
 if(stat>0) {
  csr = faReadCSR(FA_SLOT);
  logMsg("ERROR: Data still in FADC (event %d, scan 0x%x csr 0x%x ) - clearing\n",
	*(rol->nevents),stat,csr,0,0,0);
  faClear(FA_SLOT);
 }

%%

close event

end trigger

begin done usrtrig


end done


begin done

# Acknowledge tir register
 CDOACK(VME,1,0);

end done

begin status

end status