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WarwickEPR / RePLIA

FPGA Based lock in amplifier
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Unable to write data using LIAControl.jar #2

Closed sahraghav57 closed 9 months ago

sahraghav57 commented 9 months ago

I tried using LIAControl.jar to write the lock-in data onto a file on the host PC.

I see that out.lid file is created in the ramdisk every time I try to get the remote data but the file is not written onto a .csv file on the host. I decoded the reading of out.lid from RemoteData.class file to get byte-by-byte data with ' ' as termination. I am not able to read that data as well properly. I get characters ranging from 0 to 255 (ASCII) while I expect numbers (ASCII - 48 to 57) and probably alphabets (ASCII - 65 to 90, 97 to 122).

GavinMorleyLab commented 9 months ago

Hi Raghav,

Sorry but I don't know how to help with either of the problems you mention. The RePLIA software is not maintained anymore, and there are other implementations of Red-Pitaya lock-in amplifiers that are better eg: https://marceluda.github.io/rp_lock-in_pid/

Cheers, Gavin

-- Prof Gavin W Morley Director of Warwick Quantum https://warwick.ac.uk/gavinmorley https://warwick.ac.uk/WarwickQuantum

From: Raghav Sah @.> Sent: Thursday, December 28, 2023 5:34 AM To: WarwickEPR/RePLIA @.> Cc: Subscribed @.***> Subject: [WarwickEPR/RePLIA] Unable to write data using LIAControl.jar (Issue #2)

I tried using LIAControl.jar to write the lock-in data onto a file on the host PC.

I see that out.lid file is created in the ramdisk every time I try to get the remote data but the file is not written onto a .csv file on the host. I decoded the reading of out.lid from RemoteData.class file to get byte-by-byte data with ' ' as termination. I am not able to read that data as well properly. I get characters ranging from 0 to 255 (ASCII) while I expect numbers (ASCII - 48 to 57) and probably alphabets (ASCII - 65 to 90, 97 to 122).

- Reply to this email directly, view it on GitHubhttps://github.com/WarwickEPR/RePLIA/issues/2, or unsubscribehttps://github.com/notifications/unsubscribe-auth/ACJ67TQP2BXW7CXQGFDNUVTYLUAGJAVCNFSM6AAAAABBFDC6PGVHI2DSMVQWIX3LMV43ASLTON2WKOZSGA2TQMBRGEYTANI. You are receiving this because you are subscribed to this thread.Message ID: @.***>

sahraghav57 commented 9 months ago

Hi Gavin, Thanks for your response and suggestion. We had been using the software that you mentioned. When data is exported, this software has a resolution of 1mV (in LV (+-1V) input setting). 1mV resolution looks like a 10-bit ADC output. Is there any other way to get a 14-bit ADC output? We aim to distinguish the voltage in micro-volt range. Could you perhaps suggest something that could help us with this?

Thanks, Raghav.

GavinMorleyLab commented 9 months ago

Sorry but I don't know how to help with that.