Hi there, I am trying to carry out a multi-points measurements with a DMM Agilent 34461A connected to my PC via LAN cable. I have tested the examples downloaded from Keysight website, including the VIs namely Series Acquire Single and Series Acquire Multiple, and both are working perfectly fine. However, the Series Acquire Triggered Multiple shows the following error: Error - 1074000000 occurred at Agilent 3446X Series.lvlib:Error Query.vi and the posible reasons suggested in that message are as follows: Instrument report: -113, "undefined header" +0, "no error" I have checked in the forum to find similar cases, but I could not find any clue to short this problem out. Any help is really appreciate it. Cheers

You usually see that error code from an instrument when it doesn't support a specific SCPI command. Or the SCPI command isn't formatted properly. You list a bunch of commands but exactly which one is the problem? Highlight execution probably won't tell you exactly which command is at fault since the drivers don't necessarily check for errors after every SCPI command. I suggest you reset the instrument and test each command using the simple VISA read/write example from minions - https://forums.ni.com/t5/Instrument-Control-GPIB-Serial/PCI-GPIB-for-newport-ESP300/m-p/3687360/highlight/true#M75606 You can run the example while using NI-IO trace to watch each SCPI command that is sent. The test each individually, doing an error query (or run Error VI) after each to see which one is the culprit causing errors. Then read the manual about that command and its options. It might be that your model instrument needs a slightly different SCPI format or uses a new command altogether. The LabVIEW instrument drivers provided by manufacturers that make several different flavours of an instrument don't always take precautions in code to protect from commands supported by model X but not model Y. (Sometimes supported by model X with option 1 but not model X with option 2!) Another useful tip is to update the firmware for your instrument. I could be its a known bug in older firmware that's been fixed in a more recent version. Check the Keysight website for the latest version an how to install updates. Craig

LabVIEW

Error -1074000000 Agilent 3446X Series Acquir Triggered Multiple -113 "Undefined header"

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Hi GerdW,

Thanks again for your guidance. I have checked the commands and compared with those supplied by Agilent and I understood that there is nothing wrong with that. The reason was the incompatibility of the aforementioned commands with the model of DMM I am using. As you suggested, checking the strings in the VISA write block was the best strategy to find which one was not working and then realize that these 3 are actually for 34465 and 34470 models.

Thanks again for your help really appreciate your help.

Cheers