Tektronix mso4 series reading data

[apowell17]

Hi all,

I am trying to read the data off a Tektronix MSO4 series oscilloscope using SCPI commands and i am always coming up with different error codes. The two I get are -1073807331, and -1073807399. I believe these codes are relating to timeout/ communication issues with the scope. 

Also along with the read area the write commands are only working some of the time, I am ensuring the visa session is closed after each run through.

I have attached the VI below, let me know if you need any more info.

Cheers

[l.hovs]

Hi apowell17, 

Both first and second errors have proper solution articles. I have attached them below, try to go through that articles to solve this issue. 

1. Error -1073807331 When Using a VISA Property in LabVIEW - NI
2. VISA Error -1073807339 (0xbfff0015) Timeout Expired Before Operation Completed - NI

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Regards)

[Kyle97330 · Accepted solution]

You're using "Bytes at port" property nodes which are supposed to be only for Serial communications when you're using a USB device address.

Even if you were using a Serial device, 99% of the time you shouldn't use "Bytes at port".  If you don't know what to wire to the "Bytes to read" input, just try a large number (1000).  You may need to set up VISA to use a termination character, in this case an LF.

Also you're using a "VISA Clear" when you probably want to use "Flush buffer"

The MSO4 series should have an Ethernet port with LXI, can you use that instead of USB?  I find it much more reliable.

Have you tried or looked at the premade drivers?:

https://sine.ni.com/apps/utf8/niid_web_display.download_page?p_id_guid=5384DD4E307874B7E05400144FFBB...

Even if they are missing a function you need, using them can prove that communication works and will give you a template of sorts you can follow to create your own, working, VIs.

[yeah]

The MSO4 series should have an Ethernet port with LXI, can you use that instead of USB?  I find it much more reliable.

I can't agree more about this point. the communication seems always stop when connected with USB while LXI is ok.

[apowell17]

Hi all,

Thank you very much for your help. Will try a few of these solutions today and let you know how i get on.

Cheers

Alex

[crossrulz]

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@yeah wrote:

The MSO4 series should have an Ethernet port with LXI, can you use that instead of USB?  I find it much more reliable.

I can't agree more about this point. the communication seems always stop when connected with USB while LXI is ok.

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I have a general rule of avoiding USB whenever possible.  My order of preference for instrument communications is Ethernet (ie LXI), Serial (RS-232 or RS-422), GPIB (mostly due to cost), and finally USB.  If I do have to use USB, I'm using a commercial grade externally powered USB hub.  I do not trust USB hubs on motherboards.