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VK2BEA / HP8753-Companion

Facilitate and enhance the functionality of the HP8753 Vector Network Analyzer
Apache License 2.0
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Saving S2P data causes 8753c to preset #2

Closed Skroder closed 1 year ago

Skroder commented 1 year ago

Installed and everything works except saving S2P data causes 8753c to preset and no file is saved. The CSV file save is OK. PC running Fedora 37 fresh install with Processor Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz and Installed RAM is 12.0 GB. GPIB interface is HP82350a with agilent_82350a.bin firmware loaded.

VK2BEA commented 1 year ago

FYI There is a fundamental difference between saving CSV data and the S2P data. The CSV data is just the data already retrieved from the analyzer. With S2P all 4 s-parameters must be obtained from the analyzer. To do this both channels are read (first setting them to Smith chart format to get complex values. The state of the analyzer is restored after the channels are changed and data read. It sounds like you are not seeing this behavior. What is the setup of the analyzer when you read the S2P?

If you start the program with the flag "-b 7", debugging is sent to the journal. Run the program like ... $ hp8753 -b 7 and after you have requested S2P data, capture the debugging output. $ journalctl -t hp8753 --since -5min >hp8753.log

Skroder commented 1 year ago

Hi Michael -

Just getting to this as I was away for a day.

Tried 4 times as you stated:

If you start the program with the flag "|-b 7|", debugging is sent to the journal. Run the program like ... |$ hp8753 -b 7| and after you have requested S2P data, capture the debugging output. |$ journalctl -t hp8753 --since -5min >hp8753.log|

Each time it came up the first thing I did was to restore the calibration.  This worked the first time and all other tries it required a second press of the restore button as it complained "cannot query identity - cannot proceed"

|After that, the first time I asked for S2P save, it ran through all the screens and when it got to the S21 the next thing it did was to halt with a blank screen.  (This is where before it rebooted the VNA as I stated before).  I had to do a CTRL+C in the terminal to continue.|

|All other attempts to save S2P with 8753 Companion just waited a long time and the VNA did nothing.|

|FYI, I booted into Win 10 where I have Keysight IO and ran the interactive commands with querrying IDN? and it worked each time as in the p||icture attached.|||

I hope this helps.  Please let me know what else I can do if you would like more testing.

Bob, W1RS ||||

Skroder commented 1 year ago

Newer installed version does not show this behavior.