34401a error 511 - Page 1
Forum section: electronics / testgear

author: lukaq
author_rank: Regular Contributor
timestamp: March 31, 2015, 04:40:21 pm
content: I need some help.I'm trying to connect hp 34401a to laptop, but I am getting a lot of 511 and some -410 errors. Using one of those usb to rs232 converters from ebay, which has pl2303 and ADM211. I have all the latest software from Keysight installed, BenchVue, connection expert. It kinda works in connection expert, where I manually add "serial instrument" under asrl4 (com4).I can see DMM under instruments, correct model. VISA address is green. It also shows manufacturer, model, firmware... but not the serial.Then in BenchVue, I see the DMM, but when I double click on it, starts loading, I get 511 error on DMM (sometimes, not always).But I do get "Unspecified Error Occurred." error.I tried changing a lot of things, even buffers for COM. But I never got to point I would be able to use DMM in program.What can I do? where can the problem be?Best Regards,Luka

author: HighVoltage
author_rank: Super Contributor
timestamp: March 31, 2015, 05:22:25 pm
content: I had a similar problem with my 34461A. It was perfectly communicating in Connection Expert but BenchVue had problems. After a complete re-installation of BenchVue, it worked perfectly.

author: lukaq
author_rank: Regular Contributor
timestamp: March 31, 2015, 06:16:26 pm
content: I have removed everything, rebooted, installed IOLibSuite, BenchVue (didn't install waveform builder or something like that), went to connection expert manually added DMM and ticked auto-ident this instrument, hit test and got 511 again, but program shows under test connection... well see picsEverything behaves the same

author: lukaq
author_rank: Regular Contributor
timestamp: March 31, 2015, 06:20:45 pm
content: amm... something funnyI didn't use auto-ident this...and went straight to benchVue where it started working... now it works...

author: HighVoltage
author_rank: Super Contributor
timestamp: March 31, 2015, 06:27:31 pm
content: Great that you solved it.I forgot to say ... BenchVue also keeps good log files and they can be analyzed in detail.

author: artag
author_rank: Super Contributor
timestamp: March 31, 2015, 07:24:40 pm
content: A recent investigation of an HP power supply showed that the serial interface did flowcontrol with DTR. This is a bit unusual - it may be that an incorrectly configured driver would try to use RTS. It would result in overrun errors and partially transmitted commands.

author: lukaq
author_rank: Regular Contributor
timestamp: April 01, 2015, 05:25:49 am
content: Ok, like I said and it is not perfect, sometimes you have to retry, to get application to work with DMM, but once it does, it has no problem.I also have seen this 1h limit of BenchVue (which you probably can't extend, can you?) so I used older version, Agilent DMM, which has almost everything the same and some more:7h log of 2.5v tl431

author: HighVoltage
author_rank: Super Contributor
timestamp: April 01, 2015, 08:25:47 am
content: Yes, the Agilent DMM Utility has no limits and even does histogram.In BenchVue you can activate the 4 weeks trial license to get all features functional.