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Entry  Wed Feb 22 11:36:51 2012, sonal, DRS4- analog pulse counting 
    Reply  Fri Feb 24 15:52:43 2012, Stefan Ritt, DRS4- analog pulse counting 
       Reply  Wed Feb 29 06:46:47 2012, Sonal, DRS4- analog pulse counting 
          Reply  Thu Mar 1 19:22:26 2012, Stefan Ritt, DRS4- analog pulse counting 
             Reply  Wed Mar 6 12:35:38 2013, Osip Lishilin, DRS4- analog pulse counting 
                Reply  Wed Mar 6 12:37:14 2013, Stefan Ritt, DRS4- analog pulse counting 
                   Reply  Mon May 20 08:42:16 2013, Osip Lishilin, DRS4- analog pulse counting 
                      Reply  Sat May 25 21:03:22 2013, Stefan Ritt, DRS4- analog pulse counting 
Message ID: 156     Entry time: Wed Feb 29 06:46:47 2012     In reply to: 155     Reply to this: 157
Author: Sonal 
Subject: DRS4- analog pulse counting 

Stefan Ritt wrote:

sonal wrote:

Hello Sir,

Regarding to analog pulse counting by using DRS4 Rev.2.0 board, you have said that "There is a way to perform the counting dead time free, but that requires the V4 board, which has a hardware comparator on all four channels (The V2 board has only one comparator and a multiplexer). The output of these comparators go directly to the FPGA, which can then trigger on these signals. In principle one could implement a hardware counter in the FPGA, which works practically dead time free. But this requires a new firmware which has to be written. Either you do it yourself using the Xilinx development tools, or you wait until I find some time to implement this, which could take a couple of weeks or even months."

I am interested in it. I have DRS4 Rev.2.0 board. I have FPGA and Microcontroller firmware for this board. How can I implement this concept of counting pulses?

 


As I said above, you need a V4 board which has the four hardware comparators mounted. You cannot do that with the V2 board, even with a firmware upgrade.

The firmware upgrade for the V4 board is not yet ready and I won't have time for that in the next 3-4 weeks, but afterwards maybe.

Best regards,

Stefan 

 Thank you for your response.

The DRS4 Rev.2.0 with one Multiplexer and a Comparator I think may be is ok for me. Since I wanted to implement counter in FPGA, I have gone through firmware but its very difficult for me to get the flow of data from DRS to USB. Could you help me to get familiar with or to get flow of the data from DRS to the USB?

 

Thank You,

Sonal

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