Tek TDS 644A stuck "Off Buss" - Page 1
Forum section: electronics / testgear

author: keystone
author_rank: Contributor
timestamp: November 17, 2020, 11:35:28 pm
content: Hi and thanks for reading my post. I have a Tek TDS 644A that I am trying to configure for GPIB. I am pretty green with all this but trying to learn. I have read and followed the procedure for setting the scope for I/O communications per the TDS 620A, 640A, 644A op manual. I have tried all 31 Talk/Listen addresses. I have the GPIB hooked up to an Agilent USB82357B adapter that my windows 10 computer recognizes with no errors and my scope boots with a POST pass but cannot get the GPIB setting on the scope to "On Buss". Is there something I am missing or doing wrong? I have been looking at this for a while and just get nowhere so I leave it for a while then come back in a day or two hopefully with something new to try but no luck.Any ideas? Can someone please educate me? Thank you for reading.

author: Gribo
author_rank: Frequent Contributor
timestamp: November 18, 2020, 02:44:23 pm
content: Can you change the hard copy option?

author: lucatz
author_rank: Contributor
timestamp: November 19, 2020, 12:23:38 am
content: Do you have Keysight Connection Expert installed? Does it detect your TDS 644. If yes then you should be able to use the Interactive IO within Connection expert to talk to your TDS644. Talk/Listen needs to be highlighted.Start with *IDN? and remember to click send&readEdit: Your saying you cant select from the vertical keys talk/listen? Not sure what that would be.

author: keystone
author_rank: Contributor
timestamp: November 19, 2020, 07:41:34 am
content: Hi Gribo. Yes, I can configure the hardcopy option. That works fine.Hi Lucratz. Running Keysight connection expert doesn't see my scope. I can't talk to it at all. Is there a default GPIB address for these scopes? I can select from the vertical keys when configuring RS-232 for hardcopy but can't do anything when I try to configure GPIB ON/Off buss. It's stuck on "On Buss".Thanks guys for your replies. I'm open to any more ideas!

author: lucatz
author_rank: Contributor
timestamp: November 19, 2020, 01:31:24 pm
content: Talk/Listen needs to be highlighted for keysight to to talk to it. Forget Bus config. GBIP default is 5

author: snoopy
author_rank: Frequent Contributor
timestamp: November 19, 2020, 11:14:25 pm
content: This might helphttps://www.eevblog.com/forum/testgear/using-tds-hardcopy-with-agilent-82357b-gpib-controller/msg3141064/#msg3141064

author: keystone
author_rank: Contributor
timestamp: November 20, 2020, 07:19:46 am
content: Thank you Snoopy for that link. I read it over and will have to read it a few times to digest all that. I should mention that I am using the Keysight software for all this. I have the IO Library suite, version 18.1.24715.0 installed. I also have the NI software installed but not sure if it is current. I don't remember having any luck running that either. Either this problem is a software configuration problem or a hardware problem with my scope. I'm beginning to wonder if the box on my scope screen that says "Off Buss" can actually say "On Buss". I tried the Talk/Listen address of 5 and that didn't work. I'd sure like to get this to work someday as I want to learn a little programming and work with the scope. I do remember being able to see the scope using the keysight software. I would type the ?IDN query and get a correct response. So it did work but something changed and I don't know what. I did hook the scope up to an NI PCI card using a GPIB cable and don't think that worked at all. Maybe that messed something up with the scope.I'm still accepting thoughts/Ideas. Thank you all for your help. Regards, Greg