[Halld-level1] Pulse raw readout mode

[Alexander Somov]

Thanks what I am thinking, just want to confirm.

Cheers,
        Alex


On Thu, 26 Jan 2012, Bryan Moffit wrote:

> Seems like you need NSB+NSA = even number... otherwise you lose a sample. 
> Probably because the data is stored as 4 byte words?
>
> Try 10+16 or 11+15 if you must have at least 25 samples.
>
> On 01/26/2012 12:12 PM, Alexander Somov wrote:
>> 
>> How are Nsa and Nsb implemented ?
>> 
>> How many samples should I see for Nsb = 10 Nsa = 15
>> (10 + 15 = 25 or 10 - 1 + 15 -1 + 1 = 24 )?
>> 
>> I see 24 samples in data.
>> 
>> An example from the flash readout:
>> 
>> 0xb1800013 0x00850087 0x00870086 0x00860084 0x00860089 0x008a0090
>> 0x00910088 0x00880085 0x008a0088 0x00820089 0x00840085 0x00870080
>> 0x008c0083 0xb380000e (new channel)
>> 
>> 0xb1800013 - pulse raw, ch 3, first sample number 19 (i.e., middle of
>> the readout window)
>> 
>> Thanks,
>> Alex
>> 
>> 
>> 
>> 
>> 
>> 
>> On Thu, 26 Jan 2012, Bryan Moffit wrote:
>> 
>>> Translating the arguments for Hai and Ed:
>>> 
>>> FA_SLOT: flash slot number
>>> 2: Raw Pulse Mode
>>> 170: Window Latency (in 4ns samples)
>>> 50: Window Width (in 4ns samples)
>>> 10: NSB
>>> 15: NSA
>>> 3: Number of pulses to process
>>> 0: Ignored on v2.0
>>> 
>>> 
>>> On 01/26/2012 11:47 AM, Alexander Somov wrote:
>>>> Hi Hai, Ed,
>>>> 
>>>> Quick question:
>>>> 
>>>> I initialize the board in the pulse raw data
>>>> faSetProcMode(FA_SLOT,2,170,50,10,15,3,0),
>>>> 
>>>> i.e., Nsb = 10 Nsa = 15
>>>> 
>>>> How many samples should i see in data ?
>>>> I am getting 24 samples for pulses that crosses a threshold
>>>> in the middle of the readout window. Is it correct ?
>>>> 
>>>> Thanks,
>>>> Alex
>>>> _______________________________________________
>>>> Halld-level1 mailing list
>>>> Halld-level1 at jlab.org
>>>> https://mailman.jlab.org/mailman/listinfo/halld-level1
>>> 
>>> --
>>> 
>>> -------------------------------------------------------------------------------
>>> 
>>> Bryan Moffit
>>> email: moffit at jlab.org
>>> web page: http://www.jlab.org/~moffit
>>> 
>>> Sent from my Dell Precision T5500 running Linux.
>>> 
>
> -- 
> -------------------------------------------------------------------------------
> 		 Bryan Moffit
> 	  email: moffit at jlab.org
>       web page: http://www.jlab.org/~moffit
>
> Sent from my Dell Precision T5500 running Linux.
>