JLab F250ADC

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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.

Properties

The 0.5 Volt setting has problems

The board I currently have is a 10 bit ADC but there is an internal shift making the value 12 bit. The lower bits are doubled up to do this.

running at 250 MHz => 4 ns

[math]\frac{1V}{2^{12} \mbox{chan}} = \frac{1V}{4096 \mbox{chan}} = 244 \frac{\mu \mbox{Volt}}{\mbox{chan}} \frac{1}{50 \Omega} 4 \times 10^{-9} s = 20 \frac{\mbox{fC}}{\mbox{chan}}[/math]

CAEN V792 was [math]100 \frac{\mbox{fC}}{\mbox{counts}}[/math]


The timing window can be as long as 4 [math]\mu[/math] sec.

The trigger must occur at least a few clock cycles after the pulse in order to capture all of the pulse in the window.

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

If I want 0xbb = 10111011



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

Software Trigger

Initialize FADC for software trigger mode

Initialize the FADC so it will accept software triggers. 

faInit(0xbb0000,0,0,0)

-> faInit(0xbb0000,0,0,0) Initialized FADC 0 Slot # 7 at address 0x90bb0000 faInit: Enabling FADC Internal Clock, and Software Triggers (Soft Sync Reset) value = 0 = 0x0


Notice FADC ID is 0 in Slot 7 (the slots are number according to their location from the left most slot in the crate which starts counting at 1)

define processing mode

int
faSetProcMode(int id, int pmode, unsigned int PL, unsigned int PTW,
	      unsigned int NSB, unsigned int NSA, unsigned int NP, int bank)


id = slot number

An example of this should be in one of the Readout lists, however, right now there are 3 viable processing modes (pmode =1,2 or 3)

pmode = 1  RAW Window mode: all samples within PTW are saved
pmode = 2  RAW Pulse mode: NSA+NSB+1 samples around a threshold crossing
                          are saved.
pmode = 3  Integral pulse mode: NSA+NSB+1 samples are summed and the sum
          along with the timestmp for the threshold crossing are saved.


PL = latency = PL=20 => 200 nsec; time delay to record measurements after trigger is received and time window begins

PTW= 20 => 80 nsecPulse Time width = time interval window for measurements


Assuming the Clock is 250 MHz => clock pulse widths are 4 nsec


faSetProcMode(7,1,40,38,3,6,1,0)


check using the status command 

-> faStatus(0)

STATUS for FADC in slot 7 at base address 0x90bb0000 
-------------------------------------------------- 
 Board Firmware Rev/ID = 0x0114 : ADC Processing Rev = 0x0909
 Alternate VME Addressing: Multiblock Disabled
   A32 Enabled at VME base 0x08000000 or CPU addr 0x80000000

 Signal Sources: 
   Ref Clock : Internal
   Trig Src  : VME (Software)
   Sync Reset: VME (Software)

 Configuration: 
   Internal Clock ON
   Bus Error DISABLED
   MultiBlock transfer DISABLED
   Software Triggers   ENABLED
   Software Sync Reset ENABLED

 ADC Processing Configuration: (0x0018 0x0018)
   Channel Disable Mask = 0x0000
   Resolution           = 10 bits
   Mode = 1  (ENABLED)
   Lookback (PL)    = 160 ns   Time Window (PTW) = 152 ns
   Time Before Peak = 12 ns   Time After Peak   = 24 ns
   Max Peak Count   = 1 

  CSR       Register = 0x006318e0
  Control 1 Register = 0x00030eef 
  Control 2 Register = 0x00000000 - Disabled
  Internal Triggers (Live) = 0
  Trigger   Scaler         = 0
  Events in FIFO     = 0  (Block level = 1)
value = 44 = 0x2c = ','


 Trig Src  : VME (Software)

Set the internal trigger pulse width

set the internal trigger pulse width to 2 clock ticks (8 ns) 

/*                                                                                                                             
 * Set Internal trigger pulse width and deadtime between triggers                                                              
 *   Range for each :   4ns <-> 1020ns                                                                                         
 *                                                                                                                             
*    Units are in clock ticks  (4ns/tick)                                                                                      
 */

faItrigControl(int id, unsigned short itrig_width, unsigned short itrig_dt)



-> faItrigControl(0, 2, 0 )
value = 131082 = 0x2000a

Enable all channels


-> faEnable(0,0,0)


Generate a software trigger

-> faTrig(0)
value = -1866792960 = 0x90bb0000 = tclOpenFiles + 0x82ef31a0

The output was different on 5/6/11: 

-> faTrig(0)
value = -1866792960 = 0x90bb0000 = fadc_data + 0x82ee9c00

check if there is an event in the FIFO

-> faStatus(0)             

STATUS for FADC in slot 7 at base address 0x90bb0000 
-------------------------------------------------- 
 Board Firmware Rev/ID = 0x0114 : ADC Processing Rev = 0x0909
 Alternate VME Addressing: Multiblock Disabled
   A32 Enabled at VME base 0x08000000 or CPU addr 0x80000000

 Signal Sources: 
   Ref Clock : Internal
   Trig Src  : VME (Software)
   Sync Reset: VME (Software)

 Configuration: 
   Internal Clock ON
   Bus Error DISABLED
   MultiBlock transfer DISABLED
   Software Triggers   ENABLED
   Software Sync Reset ENABLED

 ADC Processing Configuration: (0x0018 0x0018)
   Channel Disable Mask = 0x0000
   Resolution           = 10 bits
   Mode = 1  (ENABLED)
   Lookback (PL)    = 160 ns   Time Window (PTW) = 152 ns
   Time Before Peak = 12 ns   Time After Peak   = 24 ns
   Max Peak Count   = 1 

  CSR       Register = 0x006318e7
  Control 1 Register = 0x00030eef 
  Control 2 Register = 0x00000007 - Enabled for triggers
  Internal Triggers (Live) = 0
  Trigger   Scaler         = 1
  Blocks in FIFO     = 1  (Block level = 1) - Block Available
  RAM Level (Bytes)  = 0 
value = 26 = 0x1a

Now I see an event in the FIFO

Print FIFO status

-> faPrintFifoStatus(0)
Fifo Buffers Status (DataFlow Status = 0x0000013d
  Input Buffer : 0x90009000 
    FPGA1: wc=0   Empty=1 Full=0 Ready=1
    FPGA2: wc=0   Empty=1 Full=0 Ready=1
  Build Buffer : 0x10001000 
    FPGA1: wc=0   Empty=1 Full=0 
    FPGA2: wc=0   Empty=1 Full=0 
  Output Buffer: 0x20002000 
    FPGA1: wc=0   Empty=1 Full=0 
    FPGA2: wc=0   Empty=1 Full=0 
value = 34 = 0x22 = '"'

The output on 5/6/11 was: 

Fifo Buffers Status (DataFlow Status = 0x0003810d
  Input Buffer : 0x90009000 
    FPGA1: wc=0   Empty=1 Full=0 Ready=1
    FPGA2: wc=0   Empty=1 Full=0 Ready=1
  Build Buffer : 0x10001000 
    FPGA1: wc=0   Empty=1 Full=0 
    FPGA2: wc=0   Empty=1 Full=0 
  Output Buffer: 0x00900090 
    FPGA1: wc=144   Empty=0 Full=0 
    FPGA2: wc=144   Empty=0 Full=0 
value = 36 = 0x24 = '$'

Count events ready to be readout

you can count how many events or blocks are ready to be read out with the command 

-> faDready(0,0)
value = 1 = 0x1

try to read a block

I stil don't see channel 1 or 3 in the output? 

-> faPrintBlock(0,0)               
81000801 - BLOCK HEADER - slot = 4   n_evts = 1   n_blk = 1
90000008 - EVENT HEADER 1 - evt_num = 8
       8 - EVENT HEADER 2 - evt_num = 8
98EEF118 - TRIGGER TIME 1 - time = EEF118
  D1E17A - TRIGGER TIME 2 - time = D1E17A
  EEF118 - TRIGGER TIME 3 - time = EEF118
  D1E17A - TRIGGER TIME 4 - time = D1E17A
A0000026 - WINDOW RAW DATA - chan = 0   nsamples = 38
11001100 - RAW SAMPLES - valid = 1  adc = 4352   valid = 1  adc = 4352
11001100 - RAW SAMPLES - valid = 1  adc = 4352   valid = 1  adc = 4352
11001100 - RAW SAMPLES - valid = 1  adc = 4352   valid = 1  adc = 4352
11001100 - RAW SAMPLES - valid = 1  adc = 4352   valid = 1  adc = 4352
11001100 - RAW SAMPLES - valid = 1  adc = 4352   valid = 1  adc = 4352
11001100 - RAW SAMPLES - valid = 1  adc = 4352   valid = 1  adc = 4352
11001100 - RAW SAMPLES - valid = 1  adc = 4352   valid = 1  adc = 4352
11001100 - RAW SAMPLES - valid = 1  adc = 4352   valid = 1  adc = 4352
11001100 - RAW SAMPLES - valid = 1  adc = 4352   valid = 1  adc = 4352
11001100 - RAW SAMPLES - valid = 1  adc = 4352   valid = 1  adc = 4352
11001100 - RAW SAMPLES - valid = 1  adc = 4352   valid = 1  adc = 4352
11001100 - RAW SAMPLES - valid = 1  adc = 4352   valid = 1  adc = 4352
11001100 - RAW SAMPLES - valid = 1  adc = 4352   valid = 1  adc = 4352
11001100 - RAW SAMPLES - valid = 1  adc = 4352   valid = 1  adc = 4352
11001100 - RAW SAMPLES - valid = 1  adc = 4352   valid = 1  adc = 4352
11001100 - RAW SAMPLES - valid = 1  adc = 4352   valid = 1  adc = 4352
11001100 - RAW SAMPLES - valid = 1  adc = 4352   valid = 1  adc = 4352
11001100 - RAW SAMPLES - valid = 1  adc = 4352   valid = 1  adc = 4352
11001100 - RAW SAMPLES - valid = 1  adc = 4352   valid = 1  adc = 4352
A1000026 - WINDOW RAW DATA - chan = 2   nsamples = 38

   40004 - RAW SAMPLES - valid = 1  adc = 4   valid = 1  adc = 4
   80004 - RAW SAMPLES - valid = 1  adc = 8   valid = 1  adc = 4
   40004 - RAW SAMPLES - valid = 1  adc = 4   valid = 1  adc = 4
   40004 - RAW SAMPLES - valid = 1  adc = 4   valid = 1  adc = 4
   40004 - RAW SAMPLES - valid = 1  adc = 4   valid = 1  adc = 4
   40000 - RAW SAMPLES - valid = 1  adc = 4   valid = 1  adc = 0
       0 - RAW SAMPLES - valid = 1  adc = 0   valid = 1  adc = 0
   40004 - RAW SAMPLES - valid = 1  adc = 4   valid = 1  adc = 4
   40000 - RAW SAMPLES - valid = 1  adc = 4   valid = 1  adc = 0
       4 - RAW SAMPLES - valid = 1  adc = 0   valid = 1  adc = 4
       4 - RAW SAMPLES - valid = 1  adc = 0   valid = 1  adc = 4
   40004 - RAW SAMPLES - valid = 1  adc = 4   valid = 1  adc = 4
   80008 - RAW SAMPLES - valid = 1  adc = 8   valid = 1  adc = 8
   80004 - RAW SAMPLES - valid = 1  adc = 8   valid = 1  adc = 4
   40004 - RAW SAMPLES - valid = 1  adc = 4   valid = 1  adc = 4
   40004 - RAW SAMPLES - valid = 1  adc = 4   valid = 1  adc = 4
   40004 - RAW SAMPLES - valid = 1  adc = 4   valid = 1  adc = 4
   40004 - RAW SAMPLES - valid = 1  adc = 4   valid = 1  adc = 4
   40004 - RAW SAMPLES - valid = 1  adc = 4   valid = 1  adc = 4
A2000026 - WINDOW RAW DATA - chan = 4   nsamples = 38
 17C017C - RAW SAMPLES - valid = 1  adc = 380   valid = 1  adc = 380
 17C017C - RAW SAMPLES - valid = 1  adc = 380   valid = 1  adc = 380
 17C017C - RAW SAMPLES - valid = 1  adc = 380   valid = 1  adc = 380
 17C017C - RAW SAMPLES - valid = 1  adc = 380   valid = 1  adc = 380
 17C017C - RAW SAMPLES - valid = 1  adc = 380   valid = 1  adc = 380
 17C017C - RAW SAMPLES - valid = 1  adc = 380   valid = 1  adc = 380
 17C017C - RAW SAMPLES - valid = 1  adc = 380   valid = 1  adc = 380
 17C017C - RAW SAMPLES - valid = 1  adc = 380   valid = 1  adc = 380
 17C017C - RAW SAMPLES - valid = 1  adc = 380   valid = 1  adc = 380
 17C017C - RAW SAMPLES - valid = 1  adc = 380   valid = 1  adc = 380
 17C017C - RAW SAMPLES - valid = 1  adc = 380   valid = 1  adc = 380
 17C017C - RAW SAMPLES - valid = 1  adc = 380   valid = 1  adc = 380
 17C017C - RAW SAMPLES - valid = 1  adc = 380   valid = 1  adc = 380
 17C017C - RAW SAMPLES - valid = 1  adc = 380   valid = 1  adc = 380
 17C017C - RAW SAMPLES - valid = 1  adc = 380   valid = 1  adc = 380
 17C017C - RAW SAMPLES - valid = 1  adc = 380   valid = 1  adc = 380
 17C017C - RAW SAMPLES - valid = 1  adc = 380   valid = 1  adc = 380
 17C017C - RAW SAMPLES - valid = 1  adc = 380   valid = 1  adc = 380
 17C017C - RAW SAMPLES - valid = 1  adc = 380   valid = 1  adc = 380
A2800026 - WINDOW RAW DATA - chan = 5   nsamples = 38
   40004 - RAW SAMPLES - valid = 1  adc = 4   valid = 1  adc = 4
   40008 - RAW SAMPLES - valid = 1  adc = 4   valid = 1  adc = 8
   40004 - RAW SAMPLES - valid = 1  adc = 4   valid = 1  adc = 4
   40004 - RAW SAMPLES - valid = 1  adc = 4   valid = 1  adc = 4
   40000 - RAW SAMPLES - valid = 1  adc = 4   valid = 1  adc = 0
   40004 - RAW SAMPLES - valid = 1  adc = 4   valid = 1  adc = 4
   40004 - RAW SAMPLES - valid = 1  adc = 4   valid = 1  adc = 4
   80008 - RAW SAMPLES - valid = 1  adc = 8   valid = 1  adc = 8
   80008 - RAW SAMPLES - valid = 1  adc = 8   valid = 1  adc = 8
   80008 - RAW SAMPLES - valid = 1  adc = 8   valid = 1  adc = 8
   80008 - RAW SAMPLES - valid = 1  adc = 8   valid = 1  adc = 8
   40004 - RAW SAMPLES - valid = 1  adc = 4   valid = 1  adc = 4
   40000 - RAW SAMPLES - valid = 1  adc = 4   valid = 1  adc = 0
   40004 - RAW SAMPLES - valid = 1  adc = 4   valid = 1  adc = 4
   40008 - RAW SAMPLES - valid = 1  adc = 4   valid = 1  adc = 8
   40008 - RAW SAMPLES - valid = 1  adc = 4   valid = 1  adc = 8
   80008 - RAW SAMPLES - valid = 1  adc = 8   valid = 1  adc = 8
   80008 - RAW SAMPLES - valid = 1  adc = 8   valid = 1  adc = 8
   80004 - RAW SAMPLES - valid = 1  adc = 8   valid = 1  adc = 4
A3000026 - WINDOW RAW DATA - chan = 6   nsamples = 38
   C0010 - RAW SAMPLES - valid = 1  adc = 12   valid = 1  adc = 16
  100010 - RAW SAMPLES - valid = 1  adc = 16   valid = 1  adc = 16
  10000C - RAW SAMPLES - valid = 1  adc = 16   valid = 1  adc = 12
   C0010 - RAW SAMPLES - valid = 1  adc = 12   valid = 1  adc = 16
  100010 - RAW SAMPLES - valid = 1  adc = 16   valid = 1  adc = 16
  100010 - RAW SAMPLES - valid = 1  adc = 16   valid = 1  adc = 16
  100010 - RAW SAMPLES - valid = 1  adc = 16   valid = 1  adc = 16
   C000C - RAW SAMPLES - valid = 1  adc = 12   valid = 1  adc = 12
  100010 - RAW SAMPLES - valid = 1  adc = 16   valid = 1  adc = 16
  100014 - RAW SAMPLES - valid = 1  adc = 16   valid = 1  adc = 20
  100010 - RAW SAMPLES - valid = 1  adc = 16   valid = 1  adc = 16
  140010 - RAW SAMPLES - valid = 1  adc = 20   valid = 1  adc = 16
  100014 - RAW SAMPLES - valid = 1  adc = 16   valid = 1  adc = 20
  140010 - RAW SAMPLES - valid = 1  adc = 20   valid = 1  adc = 16
  14000C - RAW SAMPLES - valid = 1  adc = 20   valid = 1  adc = 12
  140010 - RAW SAMPLES - valid = 1  adc = 20   valid = 1  adc = 16
  100014 - RAW SAMPLES - valid = 1  adc = 16   valid = 1  adc = 20
  100010 - RAW SAMPLES - valid = 1  adc = 16   valid = 1  adc = 16
   C000C - RAW SAMPLES - valid = 1  adc = 12   valid = 1  adc = 12
A3800026 - WINDOW RAW DATA - chan = 7   nsamples = 38
  30002C - RAW SAMPLES - valid = 1  adc = 48   valid = 1  adc = 44
  30002C - RAW SAMPLES - valid = 1  adc = 48   valid = 1  adc = 44
  30002C - RAW SAMPLES - valid = 1  adc = 48   valid = 1  adc = 44
  2C0030 - RAW SAMPLES - valid = 1  adc = 44   valid = 1  adc = 48
  2C002C - RAW SAMPLES - valid = 1  adc = 44   valid = 1  adc = 44
  2C002C - RAW SAMPLES - valid = 1  adc = 44   valid = 1  adc = 44
  300030 - RAW SAMPLES - valid = 1  adc = 48   valid = 1  adc = 48
  30002C - RAW SAMPLES - valid = 1  adc = 48   valid = 1  adc = 44
  300030 - RAW SAMPLES - valid = 1  adc = 48   valid = 1  adc = 48
  30002C - RAW SAMPLES - valid = 1  adc = 48   valid = 1  adc = 44
  300030 - RAW SAMPLES - valid = 1  adc = 48   valid = 1  adc = 48
  300030 - RAW SAMPLES - valid = 1  adc = 48   valid = 1  adc = 48
  300030 - RAW SAMPLES - valid = 1  adc = 48   valid = 1  adc = 48
  30002C - RAW SAMPLES - valid = 1  adc = 48   valid = 1  adc = 44
  300030 - RAW SAMPLES - valid = 1  adc = 48   valid = 1  adc = 48
  2C002C - RAW SAMPLES - valid = 1  adc = 44   valid = 1  adc = 44
  2C002C - RAW SAMPLES - valid = 1  adc = 44   valid = 1  adc = 44
  300030 - RAW SAMPLES - valid = 1  adc = 48   valid = 1  adc = 48
  300030 - RAW SAMPLES - valid = 1  adc = 48   valid = 1  adc = 48
A4000026 - WINDOW RAW DATA - chan = 8   nsamples = 38
  CC00CC - RAW SAMPLES - valid = 1  adc = 204   valid = 1  adc = 204
  CC00CC - RAW SAMPLES - valid = 1  adc = 204   valid = 1  adc = 204
  CC00CC - RAW SAMPLES - valid = 1  adc = 204   valid = 1  adc = 204
  CC00CC - RAW SAMPLES - valid = 1  adc = 204   valid = 1  adc = 204
  CC00CC - RAW SAMPLES - valid = 1  adc = 204   valid = 1  adc = 204
  C800D0 - RAW SAMPLES - valid = 1  adc = 200   valid = 1  adc = 208
  CC00CC - RAW SAMPLES - valid = 1  adc = 204   valid = 1  adc = 204
  CC00CC - RAW SAMPLES - valid = 1  adc = 204   valid = 1  adc = 204
  CC00C8 - RAW SAMPLES - valid = 1  adc = 204   valid = 1  adc = 200
  CC00CC - RAW SAMPLES - valid = 1  adc = 204   valid = 1  adc = 204
  CC00CC - RAW SAMPLES - valid = 1  adc = 204   valid = 1  adc = 204
  CC00CC - RAW SAMPLES - valid = 1  adc = 204   valid = 1  adc = 204
  CC00CC - RAW SAMPLES - valid = 1  adc = 204   valid = 1  adc = 204
  CC00C8 - RAW SAMPLES - valid = 1  adc = 204   valid = 1  adc = 200
  CC00D0 - RAW SAMPLES - valid = 1  adc = 204   valid = 1  adc = 208
  CC00CC - RAW SAMPLES - valid = 1  adc = 204   valid = 1  adc = 204
  CC00CC - RAW SAMPLES - valid = 1  adc = 204   valid = 1  adc = 204
  CC00D0 - RAW SAMPLES - valid = 1  adc = 204   valid = 1  adc = 208
  D000D0 - RAW SAMPLES - valid = 1  adc = 208   valid = 1  adc = 208
 A5000026 - WINDOW RAW DATA - chan = 10   nsamples = 38
  E400E0 - RAW SAMPLES - valid = 1  adc = 228   valid = 1  adc = 224
  E400E4 - RAW SAMPLES - valid = 1  adc = 228   valid = 1  adc = 228
  E400E8 - RAW SAMPLES - valid = 1  adc = 228   valid = 1  adc = 232
  E400E4 - RAW SAMPLES - valid = 1  adc = 228   valid = 1  adc = 228
  E400E4 - RAW SAMPLES - valid = 1  adc = 228   valid = 1  adc = 228
  E400E4 - RAW SAMPLES - valid = 1  adc = 228   valid = 1  adc = 228
  E800E4 - RAW SAMPLES - valid = 1  adc = 232   valid = 1  adc = 228
  E400E4 - RAW SAMPLES - valid = 1  adc = 228   valid = 1  adc = 228
  E400E4 - RAW SAMPLES - valid = 1  adc = 228   valid = 1  adc = 228
  E400E4 - RAW SAMPLES - valid = 1  adc = 228   valid = 1  adc = 228
  E400E4 - RAW SAMPLES - valid = 1  adc = 228   valid = 1  adc = 228
  E400E8 - RAW SAMPLES - valid = 1  adc = 228   valid = 1  adc = 232
  E800E8 - RAW SAMPLES - valid = 1  adc = 232   valid = 1  adc = 232
  E400E4 - RAW SAMPLES - valid = 1  adc = 228   valid = 1  adc = 228
  E000E0 - RAW SAMPLES - valid = 1  adc = 224   valid = 1  adc = 224
  E400E4 - RAW SAMPLES - valid = 1  adc = 228   valid = 1  adc = 228
  E400E4 - RAW SAMPLES - valid = 1  adc = 228   valid = 1  adc = 228
  E400E4 - RAW SAMPLES - valid = 1  adc = 228   valid = 1  adc = 228
  E400E8 - RAW SAMPLES - valid = 1  adc = 228   valid = 1  adc = 232
A5800026 - WINDOW RAW DATA - chan = 11   nsamples = 38
  C400C8 - RAW SAMPLES - valid = 1  adc = 196   valid = 1  adc = 200
  C400C4 - RAW SAMPLES - valid = 1  adc = 196   valid = 1  adc = 196
  C800C4 - RAW SAMPLES - valid = 1  adc = 200   valid = 1  adc = 196
  C400C8 - RAW SAMPLES - valid = 1  adc = 196   valid = 1  adc = 200
  C800C4 - RAW SAMPLES - valid = 1  adc = 200   valid = 1  adc = 196
  C800C8 - RAW SAMPLES - valid = 1  adc = 200   valid = 1  adc = 200
  C800C8 - RAW SAMPLES - valid = 1  adc = 200   valid = 1  adc = 200
  C800C8 - RAW SAMPLES - valid = 1  adc = 200   valid = 1  adc = 200
  C800C8 - RAW SAMPLES - valid = 1  adc = 200   valid = 1  adc = 200
  C400C8 - RAW SAMPLES - valid = 1  adc = 196   valid = 1  adc = 200
  C800C8 - RAW SAMPLES - valid = 1  adc = 200   valid = 1  adc = 200
  C800C8 - RAW SAMPLES - valid = 1  adc = 200   valid = 1  adc = 200
  C800C8 - RAW SAMPLES - valid = 1  adc = 200   valid = 1  adc = 200
  C800C8 - RAW SAMPLES - valid = 1  adc = 200   valid = 1  adc = 200
  C400C8 - RAW SAMPLES - valid = 1  adc = 196   valid = 1  adc = 200
  C800C8 - RAW SAMPLES - valid = 1  adc = 200   valid = 1  adc = 200
  C400C4 - RAW SAMPLES - valid = 1  adc = 196   valid = 1  adc = 196
  C400C8 - RAW SAMPLES - valid = 1  adc = 196   valid = 1  adc = 200
  C400C8 - RAW SAMPLES - valid = 1  adc = 196   valid = 1  adc = 200
A6000026 - WINDOW RAW DATA - chan = 12   nsamples = 38
  B000AC - RAW SAMPLES - valid = 1  adc = 176   valid = 1  adc = 172
  AC00AC - RAW SAMPLES - valid = 1  adc = 172   valid = 1  adc = 172
  AC00AC - RAW SAMPLES - valid = 1  adc = 172   valid = 1  adc = 172
  AC00AC - RAW SAMPLES - valid = 1  adc = 172   valid = 1  adc = 172
  A800AC - RAW SAMPLES - valid = 1  adc = 168   valid = 1  adc = 172
  AC00A8 - RAW SAMPLES - valid = 1  adc = 172   valid = 1  adc = 168
  AC00AC - RAW SAMPLES - valid = 1  adc = 172   valid = 1  adc = 172
  AC00B0 - RAW SAMPLES - valid = 1  adc = 172   valid = 1  adc = 176
  B000AC - RAW SAMPLES - valid = 1  adc = 176   valid = 1  adc = 172
  AC00AC - RAW SAMPLES - valid = 1  adc = 172   valid = 1  adc = 172
  AC00AC - RAW SAMPLES - valid = 1  adc = 172   valid = 1  adc = 172
  AC00AC - RAW SAMPLES - valid = 1  adc = 172   valid = 1  adc = 172
  AC00A8 - RAW SAMPLES - valid = 1  adc = 172   valid = 1  adc = 168
  A800AC - RAW SAMPLES - valid = 1  adc = 168   valid = 1  adc = 172
  AC00AC - RAW SAMPLES - valid = 1  adc = 172   valid = 1  adc = 172
  AC00AC - RAW SAMPLES - valid = 1  adc = 172   valid = 1  adc = 172
  AC00A8 - RAW SAMPLES - valid = 1  adc = 172   valid = 1  adc = 168
  AC00AC - RAW SAMPLES - valid = 1  adc = 172   valid = 1  adc = 172
  A800AC - RAW SAMPLES - valid = 1  adc = 168   valid = 1  adc = 172
A6800026 - WINDOW RAW DATA - chan = 13   nsamples = 38
  AC00AC - RAW SAMPLES - valid = 1  adc = 172   valid = 1  adc = 172
  AC00AC - RAW SAMPLES - valid = 1  adc = 172   valid = 1  adc = 172
  AC00AC - RAW SAMPLES - valid = 1  adc = 172   valid = 1  adc = 172
  AC00AC - RAW SAMPLES - valid = 1  adc = 172   valid = 1  adc = 172
  AC00B0 - RAW SAMPLES - valid = 1  adc = 172   valid = 1  adc = 176
  B000AC - RAW SAMPLES - valid = 1  adc = 176   valid = 1  adc = 172
  AC00AC - RAW SAMPLES - valid = 1  adc = 172   valid = 1  adc = 172
  AC00AC - RAW SAMPLES - valid = 1  adc = 172   valid = 1  adc = 172
  AC00B0 - RAW SAMPLES - valid = 1  adc = 172   valid = 1  adc = 176
  AC00AC - RAW SAMPLES - valid = 1  adc = 172   valid = 1  adc = 172
  AC00AC - RAW SAMPLES - valid = 1  adc = 172   valid = 1  adc = 172
  AC00B0 - RAW SAMPLES - valid = 1  adc = 172   valid = 1  adc = 176
  AC00B0 - RAW SAMPLES - valid = 1  adc = 172   valid = 1  adc = 176
  B000B0 - RAW SAMPLES - valid = 1  adc = 176   valid = 1  adc = 176
  B000B0 - RAW SAMPLES - valid = 1  adc = 176   valid = 1  adc = 176
  B000AC - RAW SAMPLES - valid = 1  adc = 176   valid = 1  adc = 172
  B000B0 - RAW SAMPLES - valid = 1  adc = 176   valid = 1  adc = 176
  AC00AC - RAW SAMPLES - valid = 1  adc = 172   valid = 1  adc = 172
  AC00A8 - RAW SAMPLES - valid = 1  adc = 172   valid = 1  adc = 168
A7000026 - WINDOW RAW DATA - chan = 14   nsamples = 38
  B400B4 - RAW SAMPLES - valid = 1  adc = 180   valid = 1  adc = 180
  B400B4 - RAW SAMPLES - valid = 1  adc = 180   valid = 1  adc = 180
  B800B8 - RAW SAMPLES - valid = 1  adc = 184   valid = 1  adc = 184
  B400B4 - RAW SAMPLES - valid = 1  adc = 180   valid = 1  adc = 180
  B400B4 - RAW SAMPLES - valid = 1  adc = 180   valid = 1  adc = 180
  B800B4 - RAW SAMPLES - valid = 1  adc = 184   valid = 1  adc = 180
  B400B8 - RAW SAMPLES - valid = 1  adc = 180   valid = 1  adc = 184
  B400B8 - RAW SAMPLES - valid = 1  adc = 180   valid = 1  adc = 184
  B800B4 - RAW SAMPLES - valid = 1  adc = 184   valid = 1  adc = 180
  B400B8 - RAW SAMPLES - valid = 1  adc = 180   valid = 1  adc = 184
  B400B8 - RAW SAMPLES - valid = 1  adc = 180   valid = 1  adc = 184
  B800BC - RAW SAMPLES - valid = 1  adc = 184   valid = 1  adc = 188
  B400B8 - RAW SAMPLES - valid = 1  adc = 180   valid = 1  adc = 184
  B400B8 - RAW SAMPLES - valid = 1  adc = 180   valid = 1  adc = 184
  B400B4 - RAW SAMPLES - valid = 1  adc = 180   valid = 1  adc = 180
  B400B4 - RAW SAMPLES - valid = 1  adc = 180   valid = 1  adc = 180
  B800B4 - RAW SAMPLES - valid = 1  adc = 184   valid = 1  adc = 180
  B800B4 - RAW SAMPLES - valid = 1  adc = 184   valid = 1  adc = 180
  B400B8 - RAW SAMPLES - valid = 1  adc = 180   valid = 1  adc = 184
A7800026 - WINDOW RAW DATA - chan = 15   nsamples = 38
  A0009C - RAW SAMPLES - valid = 1  adc = 160   valid = 1  adc = 156
  A000A0 - RAW SAMPLES - valid = 1  adc = 160   valid = 1  adc = 160
  A000A0 - RAW SAMPLES - valid = 1  adc = 160   valid = 1  adc = 160
  A000A0 - RAW SAMPLES - valid = 1  adc = 160   valid = 1  adc = 160
  A000A0 - RAW SAMPLES - valid = 1  adc = 160   valid = 1  adc = 160
  A000A0 - RAW SAMPLES - valid = 1  adc = 160   valid = 1  adc = 160
  A000A0 - RAW SAMPLES - valid = 1  adc = 160   valid = 1  adc = 160
  A0009C - RAW SAMPLES - valid = 1  adc = 160   valid = 1  adc = 156
  A000A0 - RAW SAMPLES - valid = 1  adc = 160   valid = 1  adc = 160
  9C009C - RAW SAMPLES - valid = 1  adc = 156   valid = 1  adc = 156
  9C00A0 - RAW SAMPLES - valid = 1  adc = 156   valid = 1  adc = 160
  A000A0 - RAW SAMPLES - valid = 1  adc = 160   valid = 1  adc = 160
  9C009C - RAW SAMPLES - valid = 1  adc = 156   valid = 1  adc = 156
  A000A0 - RAW SAMPLES - valid = 1  adc = 160   valid = 1  adc = 160
  A000A0 - RAW SAMPLES - valid = 1  adc = 160   valid = 1  adc = 160
  A400A0 - RAW SAMPLES - valid = 1  adc = 164   valid = 1  adc = 160
  A400A0 - RAW SAMPLES - valid = 1  adc = 164   valid = 1  adc = 160
  A400A4 - RAW SAMPLES - valid = 1  adc = 164   valid = 1  adc = 164
  A000A4 - RAW SAMPLES - valid = 1  adc = 160   valid = 1  adc = 164
89000120 - BLOCK TRAILER - slot = 4   n_words = 288
value = 288 = 0x120

Hardware Trigger

Install DMA lib

Configure ROC

Load the library


-> ld < usrTempeDma.o
value = 230900496 = 0xdc34310

Configure the Memory

-> usrVmeDmaConfig(2,2,0)
0xdbb1830 (tShell): VME DMA Address  Mode set for A32
0xdbb1830 (tShell): VME DMA Transfer Mode set for D32 block mode (BLT)
value = 0 = 0x0

Show the Dma config

-> sysVmeDmaShow
DMA Chan 0 Status = 0x00290000
  Source(VME) address: 0x002b0000 
  Destination address: 0x0020efb4 
  Byte Count         : 0x00007356 
  Execption Status   : 0x00000000 
  Bus Error   address: 0x00000000 
  DMA Control Reg    : 0x00000000 
  VME Address Mode : 2 (A32)
  VME Data Width   : 1 (D32)
  VME Transfer Mode: 1 (BLT32)
  STATUS of Last Transfer:
   NO Transfer Completed
value = 2686976 = 0x290000
-> ld < fadcLib.o
value = 230935520 = 0xdc3cbe0
Click Prestart
daLogMsg: INFO: Entering User Prestart
linking async GEN trigger to id 1 

disconnecting vector 225 

STATUS for FADC in slot 7 at base address 0x90bb0000 
-------------------------------------------------- 
 Board Firmware Rev/ID = 0x0114 : ADC Processing Rev = 0x0909
 Alternate VME Addressing: Multiblock Disabled
   A32 Enabled at VME base 0x08000000 or CPU addr 0x80000000

 Signal Sources: 
   Ref Clock : Front Panel
   Trig Src  : Front Panel (Async)
   Sync Reset: Front Panel (Async)
   SDC       : In Use

 Configuration: 
   Internal Clock ON
   Bus Error ENABLED
   MultiBlock transfer DISABLED

 ADC Processing Configuration: (0x0018 0x0018)
   Channel Disable Mask = 0x0000
   Resolution           = 10 bits
   Mode = 1  (ENABLED)
   Lookback (PL)    = 200 ns   Time Window (PTW) = 80 ns
   Time Before Peak = 12 ns   Time After Peak   = 24 ns
   Max Peak Count   = 1 

  CSR       Register = 0x006318e0
  Control 1 Register = 0x00130119 
  Control 2 Register = 0x0000000f - Enabled for triggers
  Internal Triggers (Live) = 0
  Trigger   Scaler         = 0
  Events in FIFO     = 0  (Block level = 1)
Click Go
daLogMsg: INFO: Entering User Go
0xdca6890 (ROC): faSync: ERROR: Software Sync Resets not enabledinterrupt: ERROR: NO data in FADC  datascan = 0x0

now trigger one time 

-> faStatus(0)

STATUS for FADC in slot 7 at base address 0x90bb0000 
-------------------------------------------------- 
 Board Firmware Rev/ID = 0x0114 : ADC Processing Rev = 0x0909
 Alternate VME Addressing: Multiblock Disabled
   A32 Enabled at VME base 0x08000000 or CPU addr 0x80000000

 Signal Sources: 
   Ref Clock : Front Panel
   Trig Src  : Front Panel (Async)
   Sync Reset: Front Panel (Async)
   SDC       : In Use

 Configuration: 
   Internal Clock ON
   Bus Error ENABLED
   MultiBlock transfer DISABLED

 ADC Processing Configuration: (0x0018 0x0018)
   Channel Disable Mask = 0x0000
   Resolution           = 10 bits
   Mode = 1  (ENABLED)
   Lookback (PL)    = 200 ns   Time Window (PTW) = 80 ns
   Time Before Peak = 12 ns   Time After Peak   = 24 ns
   Max Peak Count   = 1 

  CSR       Register = 0x006318e8
  Control 1 Register = 0x00130119 
  Control 2 Register = 0x0000000f - Enabled for triggers
  Internal Triggers (Live) = 0
  Trigger   Scaler         = 1
  Events in FIFO     = 0  (Block level = 1)
value = 44 = 0x2c = ','
-> sysVmeDmaShow              
DMA Chan 0 Status = 0x10000000
  Source(VME) address: 0x08000800 
  Destination address: 0x0d152e30 
  Byte Count         : 0x00003680 
  Execption Status   : 0x000ccb00 
  Bus Error   address: 0x080002b8 
  DMA Control Reg    : 0x00836070 
  VME Address Mode : 2 (A32)
  VME Data Width   : 1 (D32)
  VME Transfer Mode: 1 (BLT32)
  STATUS of Last Transfer:
   Error Bit Set
     Source: VME Bus
value = 268435456 = 0x10000000

There is an error bit set.

Second Trigger

no change

Third Trigger
-> interrupt: ERROR: Data still in FADC (event 4, scan 0x1 csr 0xf06318ef ) - clearing


ROC crashes

Setup Signal distribution board

FADC and SD address

The ADC address pins are set to

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


0xbb000 =101110110000000000000000

The signal distribution board SDC is set to


Address
Pin Switch bit
A6 on/closed 0
A7 on 0
A8 on 0
A9 off 1
A10 on 0
A11 off/open 1
A12 on 0
A13 off 1
A14 off 1
A15 off 1

0xea = 1110101000

Initialize FADC for Front panel(FP) trigger with Signal distribution (SD) board

The address of the SD board is passed to the faInit routine

Using the SD boards's internal clock 

-> faInit(0xbb0000,0,0,0xea13)
Initialized FADC 0  Slot # 7 at address 0x90bb0000 
Using JLAB FADC Signal Distribution Module at address 0x9100ea00
faInit: JLAB FADC Signal Distribution Card is Assumed in Use
faInit: Front Panel Inputs will be enabled. 
faInit: Enabling FADC for SDC Clock (Front Panel) and Front Panel Triggers (FP Sync Reset)
value = 0 = 0x0


or using the FADC's internal clock 

-> faInit(0xbb0000,0,0,0xea03)
Initialized FADC 0  Slot # 7 at address 0x90bb0000 
Using JLAB FADC Signal Distribution Module at address 0x9100ea00
faInit: JLAB FADC Signal Distribution Card will not be Used
faInit: Enabling FADC Internal Clock, and Front Panel Triggers (FP Sync Reset)
value = 0 = 0x0

faSDC_Status

-> faSDC_Status(0)

STATUS for FADC Signal Distribution Card at base address 0x9100ea00 
---------------------------------------------------------------- 
 Board Firmware Rev/ID = 0x02
 Registers: 
   CSR         = 0x0200     Control     = 0x0220
   Busy Enable = 0x0000     Busy Status = 0xfe00

 Ref Clock : Internal
 Software Triggers
 Software Sync Reset
value = 21 = 0x15

The SDC has not been eneabled yet for external triggers.

Use faGEnable(0,0) to enable both the FADC and the SD board

-> faGEnable(0,0) value = 1 = 0x1

-> faSDC_Status(0)

STATUS for FADC Signal Distribution Card at base address 0x9100ea00 

Board Firmware Rev/ID = 0x02
Registers: 
  CSR         = 0x0200     Control     = 0x0200
  Busy Enable = 0x0000     Busy Status = 0xfe00

Ref Clock : Internal
External Triggers (Sync with clock)
Software Sync Reset

value = 21 = 0x15

Set the FADC processing mode

-> faSetProcMode(7,1,40,38,3,6,1,0) value = 0 = 0x0 

int
faSetProcMode(int id, int pmode, unsigned int PL, unsigned int PTW,
	      unsigned int NSB, unsigned int NSA, unsigned int NP, int bank)


id = slot number =7

An example of this should be in one of the Readout lists, however, right now there are 3 viable processing modes (pmode =1,2 or 3)

pmode = 1  RAW Window mode: all samples within PTW are saved
pmode = 2  RAW Pulse mode: NSA+NSB+1 samples around a threshold crossing
                          are saved.
pmode = 3  Integral pulse mode: NSA+NSB+1 samples are summed and the sum
          along with the timestmp for the threshold crossing are saved.


PL = 40 = 160 ns = programmable latency ; time delay to record measurements after trigger is received and time window begins

PTW= 20 => 80 nsecPulse Time width = time interval window for measurements
 = number of samples in the pulse time window moving forward in time from the location of the latency.



NSB = 3 = Number of Samples before before the pulse to record

NSA=6 = number of samples after the pulse to record

NP =1 = number of pulses to look for in the PTW

Assuming the Clock is 250 MHz => clock pulse widths are 4 nsec

Configure SD card


/***************************************************************************************                                       
   JLAB FADC Signal Distribution Card (SDC) Routines                                                                           
                                                                                                                               
   cFlag:  controls the configuation of the SDC                                                                                
                                                                                                                               
          0:  Default Mode  Internal CLK, Sync External Trigger and Sync Reset                                                 
        > 0:  Pass through mode                                                                                                
                                                                                                                               
   bMask:  mask of Busy enables for the SDC - Do not Enable busy if there is no FADC                                           
                                                                      
                                                         
*/

int
faSDC_Config(unsigned short cFlag, unsigned short bMask)



-> faSDC_Config(0,0) value = 0 = 0x0

FADC status

-> faStatus(0)              

STATUS for FADC in slot 7 at base address 0x90bb0000 
-------------------------------------------------- 
 Board Firmware Rev/ID = 0x0114 : ADC Processing Rev = 0x0909
 Alternate VME Addressing: Multiblock Disabled
   A32 Enabled at VME base 0x08000000 or CPU addr 0x80000000

 Signal Sources: 
   Ref Clock : Front Panel
   Trig Src  : Front Panel (Async)
   Sync Reset: Front Panel (Async)
   SDC       : In Use

 Configuration: 
   Internal Clock ON
   Bus Error DISABLED
   MultiBlock transfer DISABLED

 ADC Processing Configuration: (0x0018 0x0018)
   Channel Disable Mask = 0x0000
   Resolution           = 10 bits
   Mode = 1  (ENABLED)
   Lookback (PL)    = 160 ns   Time Window (PTW) = 152 ns
   Time Before Peak = 12 ns   Time After Peak   = 24 ns
   Max Peak Count   = 1 

  CSR       Register = 0x00631ce0
  Control 1 Register = 0x00030119 
  Control 2 Register = 0x00000007 - Enabled for triggers
  Internal Triggers (Live) = 0
  Trigger   Scaler         = 0
  Events in FIFO     = 0  (Block level = 1)
value = 44 = 0x2c = ','

Test pulse Measurment

Input the test pulse below into the FADC

FADCTestPulse 05182011.png

I set a delay for 200 ns and a pulse window for 40 ns. 


  faSetProcMode(7,1,50,10,0,0,0,0);

ADC Processing Configuration: (0xfe08 0xff08)
   Channel Disable Mask = 0xfffe
   Resolution           = 10 bits
   Mode = 1  (ENABLED)
   Lookback (PL)    = 200 ns   Time Window (PTW) = 40 ns
   Time Before Peak = 20 ns   Time After Peak   = 40 ns
   Max Peak Count   = 0

RUn 2144 with 64 events

Run 2145 with

faChanDisable

One can disable ADC channels using the function

faChanDisable(ID,mask)

where mask is a word representing which channels you should disable with the high bit.

all 16 channels are disables with 0xffff

only channel 0 is enabled with

faChanDidable(0,0xfffe)

Documentation

Data Format

header bank ID is =38797568=0x2500100

File:JLab F250 ADC V1.2 DataFormat.pdf

Decoding an Event

0x00000000  0xf800fafa  0x81c00801  0x90000007  0x00000007  
0x980000be  0x0001f922  0x000000be  0x0001f922  0xa0000014  
0x11001100  0x11001100  0x11001100  0x11001100  0x11001100  
0x11001100  0x11001100  0x11001100  0x11001100  0x11001100  
0xa1000014  0x00080008  0x00040008  0x000c0008  0x00080008  
0x00040008  0x00080008  0x00040004  0x00040004  0x00080004  
0x00040004  0xa1800014  0x10000004  0x10000000  0x10001000  
0x10001000  0x10001000  0x10001000  0x10000000  0x00000000  
0x10001000  0x00001000  0xa2000014  0x00cc00cc  0x00cc00d0  
0x00cc00cc  0x00cc00cc  0x00cc00d0  0x00cc00cc  0x00cc00cc  
0x00cc00cc  0x00cc00d0  0x00cc00cc  0xa2800014  0x00080008  
0x00040008  0x00040004  0x00080004  0x00080008  0x00080008  
0x00040004  0x00040008  0x00040008  0x00040008  0xa3000014  
0x00140014  0x00140010  0x00140014  0x00140010  0x00100014  
0x00140014  0x00140014  0x00140014  0x00140014  0x00180018  
0xa3800014  0x0028002c  0x0028002c  0x002c0028  0x002c002c  0
x002c002c  0x002c002c  0x002c002c  0x002c002c  0x0028002c 
 0x002c002c  0xa4000014  0x00cc00cc  0x00cc00c8  0x00cc00cc  
0x00c800cc  0x00cc00cc  0x00d000cc  0x00cc00c8  0x00cc00cc  
0x00cc00cc  0x00cc00cc  0xa4800014  0x00cc00cc  0x00cc00cc  
0x00c800c8  0x00cc00cc  0x00cc00cc  0x00cc00cc  0x00cc00cc  
0x00cc00cc  0x00c800cc  0x00cc00c8  0xa5000014  0x00e400e4  
0x00e400e4  0x00e400e4  0x00e400e8  0x00e400e4  0x00e800e4  
0x00e400e4  0x00e000e4  0x00e400e4  0x00e400e4  0xa5800014  
0x00c800cc  0x00c800cc  0x00cc00c8  0x00c800cc  0x00cc00c8  
0x00c800cc  0x00c800cc  0x00c800cc  0x00c800c8  0x00cc00cc  
0xa6000014  0x00b000b0  0x00ac00b0  0x00b000b0  0x00ac00ac  
0x00b000b0  0x00ac00ac  0x00ac00ac  0x00b000b0  0x00b000ac  
0x00b000b0  0xa6800014  0x00ac00b0  0x00b000ac  0x00ac00ac  
0x00b000b0  0x00b000b0  0x00b000ac  0x00ac00ac  0x00b000ac  
0x00b000b0  0x00ac00ac  0xa7000014  0x00b800b8  0x00b400b4  
0x00b400bc  0x00bc00bc  0x00b800b8  0x00b400b8  0x00b800b8  
0x00b800b8  0x00b800b8  0x00b800b8  0xa7800014  0x00a000a0  
0x00a400a0  0x00a000a0  0x00a000a4  0x00a400a4  0x00a400a4  
0x00a000a0  0x00a000a0  0x00a000a0  0x00a400a0  0xf800ffff  
0x89c000ae

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

ROC library

V 1.2

sample readout list:Media:fadc_list.crl.txt

DMA library

dmaPList.c: Media:JLab_F250_ADC_dmaPlist.c.txt

dmaPList.h: Media:JLab_F250_ADC_dmaPlist.h.txt


ROC library

fadcLib.c: Media:JLab_F250_ADC_fadcLib.c.txt

fadcLib.h: Media:JLab_F250_ADC_fadcLib.h.txt

Errors

DMA transfer error

Click prestart in CODA to setup the FADC

then enable it for trigger 


-> faGEnable(0)
value = 1 = 0x1
-> faStatus

STATUS for FADC in slot 7 at base address 0x90bb0000 
-------------------------------------------------- 
 Board Firmware Rev/ID = 0x0114 : ADC Processing Rev = 0x0909
 Alternate VME Addressing: Multiblock Disabled
   A32 Enabled at VME base 0x08000000 or CPU addr 0x80000000

 Signal Sources: 
   Ref Clock : Front Panel
   Trig Src  : Front Panel (Async)
   Sync Reset: Front Panel (Async)
   SDC       : In Use

 Configuration: 
   Internal Clock ON
   Bus Error ENABLED
   MultiBlock transfer DISABLED

 ADC Processing Configuration: (0x0018 0x0018)
   Channel Disable Mask = 0x0000
   Resolution           = 10 bits
   Mode = 1  (ENABLED)
   Lookback (PL)    = 200 ns   Time Window (PTW) = 80 ns
   Time Before Peak = 12 ns   Time After Peak   = 24 ns
   Max Peak Count   = 1 

  CSR       Register = 0x006318e3
  Control 1 Register = 0x00130119 
  Control 2 Register = 0x00000007 - Enabled for triggers
  Internal Triggers (Live) = 0
  Trigger   Scaler         = 2
  Events in FIFO     = 1  (Block level = 1) - Data Available
  RAM Level (Bytes)  = 0 
value = 26 = 0x1a


The FIFO had events so I cleared them 

-> faClear
value = 0 = 0x0
-> faStatus

STATUS for FADC in slot 7 at base address 0x90bb0000 
-------------------------------------------------- 
 Board Firmware Rev/ID = 0x0114 : ADC Processing Rev = 0x0909
 Alternate VME Addressing: Multiblock Disabled
   A32 Enabled at VME base 0x08000000 or CPU addr 0x80000000

 Signal Sources: 
   Ref Clock : Front Panel
   Trig Src  : Front Panel (Async)
   Sync Reset: Front Panel (Async)
   SDC       : In Use

 Configuration: 
   Internal Clock ON
   Bus Error ENABLED
   MultiBlock transfer DISABLED

 ADC Processing Configuration: (0x0018 0x0018)
   Channel Disable Mask = 0x0000
   Resolution           = 10 bits
   Mode = 1  (ENABLED)
   Lookback (PL)    = 200 ns   Time Window (PTW) = 80 ns
   Time Before Peak = 12 ns   Time After Peak   = 24 ns
   Max Peak Count   = 1 

  CSR       Register = 0x006318e0
  Control 1 Register = 0x00130119 
  Control 2 Register = 0x00000007 - Enabled for triggers
  Internal Triggers (Live) = 0
  Trigger   Scaler         = 0
  Events in FIFO     = 0  (Block level = 1)
value = 44 = 0x2c = ','


I did not see any random triggers so I generated one. 

-> faStatus

STATUS for FADC in slot 7 at base address 0x90bb0000 
-------------------------------------------------- 
 Board Firmware Rev/ID = 0x0114 : ADC Processing Rev = 0x0909
 Alternate VME Addressing: Multiblock Disabled
   A32 Enabled at VME base 0x08000000 or CPU addr 0x80000000

 Signal Sources: 
   Ref Clock : Front Panel
   Trig Src  : Front Panel (Async)
   Sync Reset: Front Panel (Async)
   SDC       : In Use

 Configuration: 
   Internal Clock ON
   Bus Error ENABLED
   MultiBlock transfer DISABLED

 ADC Processing Configuration: (0x0018 0x0018)
   Channel Disable Mask = 0x0000
   Resolution           = 10 bits
   Mode = 1  (ENABLED)
   Lookback (PL)    = 200 ns   Time Window (PTW) = 80 ns
   Time Before Peak = 12 ns   Time After Peak   = 24 ns
   Max Peak Count   = 1 

  CSR       Register = 0x006318e3
  Control 1 Register = 0x00130119 
  Control 2 Register = 0x00000007 - Enabled for triggers
  Internal Triggers (Live) = 0
  Trigger   Scaler         = 1
  Events in FIFO     = 1  (Block level = 1) - Data Available
  RAM Level (Bytes)  = 0 
value = 26 = 0x1a


Let me try to print out the block 

-> faPrintBlock
81C00801 - BLOCK HEADER - slot = 7   n_evts = 1   n_blk = 1
86C706F6 - BLOCK HEADER - slot = 27   n_evts = 224   n_blk = 1782
F0000012 - DATA NOT VALID = 14
value = 3 = 0x3




-> faStatus    

STATUS for FADC in slot 7 at base address 0x90bb0000 
-------------------------------------------------- 
 Board Firmware Rev/ID = 0x0114 : ADC Processing Rev = 0x0909
 Alternate VME Addressing: Multiblock Disabled
   A32 Enabled at VME base 0x08000000 or CPU addr 0x80000000

 Signal Sources: 
   Ref Clock : Front Panel
   Trig Src  : Front Panel (Async)
   Sync Reset: Front Panel (Async)
   SDC       : In Use

 Configuration: 
   Internal Clock ON
   Bus Error ENABLED
   MultiBlock transfer DISABLED

 ADC Processing Configuration: (0x0018 0x0018)
   Channel Disable Mask = 0x0000
   Resolution           = 10 bits
   Mode = 1  (ENABLED)
   Lookback (PL)    = 200 ns   Time Window (PTW) = 80 ns
   Time Before Peak = 12 ns   Time After Peak   = 24 ns
   Max Peak Count   = 1 

  CSR       Register = 0x006318e0
  Control 1 Register = 0x00130119 
  Control 2 Register = 0x00000007 - Enabled for triggers
  Internal Triggers (Live) = 0
  Trigger   Scaler         = 1
  Events in FIFO     = 0  (Block level = 1)
value = 44 = 0x2c = ','

clearing the module and downloading everything again seemed to make the problem go away. Also power cycling the VME crate as well.


It also seems to help if you do software triggers.

more DMA error

I am having trouble getting some configurations working without a DMA error.

for example

The smallest process configuration always has a DMA error

faSetProcMode(7,1,2,1,0,0,0,0)


The smallest one I was able to get working without a DMA error was

faSetProcMode(7,1,20,8,0,0,0,0)

I do see the error 

interrupt: ERROR: Data still in FADC (event 1039, scan 0x1 csr 0xf06318ef ) - clearing

about every 1000 +/- 500 events.

See runs 2141 and 2142

Now I increase the latency to 200 (800 ns).

Long run 2143 was taken.

Extra words

Extra data words are appearing in the FADC bank written to the CODA data file.

Configure ADC for NaI readout

The NaI detector signal width can be as much a 4 micro seconds.

That is a lot of samples

The JLab PMT output has a signal width of about 1 microsecond

Let configure the FADC to take raw samples for 2 microseconds.

You will need a latency time to determine where the window should begin since a discriminator is used to generate the ADC gate based on the NAI output. This means the ADC trigger is some time after the pulse. THis is OK because the FADC is always sampling the input in a using a time window you define.

Lets define a time window which is 2 microseconds long.

Since the clock is 250 MHz, this means each time bin is 4 ns. A timing window with 500, 4 ns bins will sum to 2 microseconds.

Set timing window

int
faSetProcMode(int id, int pmode, unsigned int PL, unsigned int PTW,
	      unsigned int NSB, unsigned int NSA, unsigned int NP, int bank)


id = slot number =7

An example of this should be in one of the Readout lists, however, right now there are 3 viable processing modes (pmode =1,2 or 3)

pmode = 1  RAW Window mode: all samples within PTW are saved
pmode = 2  RAW Pulse mode: NSA+NSB+1 samples around a threshold crossing
                          are saved.
pmode = 3  Integral pulse mode: NSA+NSB+1 samples are summed and the sum
          along with the timestmp for the threshold crossing are saved.


PL = 40 = 160 ns = programmable latency ; time delay to record measurements after trigger is received and time window begins

PTW= 20 => 80 nsecPulse Time width = time interval window for measurements
 = number of samples in the pulse time window moving forward in time from the location of the latency.



NSB = 3 = Number of Samples before before the pulse to record

NSA=6 = number of samples after the pulse to record

NP =1 = number of pulses to look for in the PTW


faSetProcMode(7,1,540,500,0,0,0,0)


VME_modules

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