Ty McKinney

Hello,<br> See the link below for a LabView Driver for the 2450.<br> <br> https://www.tek.com/en/support/software/driver/keithley-2450-2460-2461-2470-native-labview-2015<br> <br> Also, here is the reference manual which will include instructions on how to make front panel and remote current measurements as well as a list of ALL available commands for communicating with the 2450.<br> <a href="https://www.tek.com/en/keithley-source-measure-units/keithley-smu-2400-series-sourcemeter-manual/model-2450-interactive-sou">Model 2450 Interactive SourceMeter Instrument Reference Manual | Tektronix</a><br> <br> Hope this helps!

This error you're experiencing could be related to one of two things: Either the preferred USB to GPIB adaptor requires 488.1, hence no error when you're sending SCPI commands over that protocol, or NI-MAX/LabVIEW is configured for 488.1 rather than SCPI.<br> The 2400 provides either 488.1 or SCPI as options depending on what your drivers/software/adaptors ask for.

What card are you using for the DAQ6510 resistance measurements?

Hello,
Can you attach a copy of your code please?

READ and TRAC:DATA are very different commands.
READ will send an INITiate and FETCh? command to your unit. What this will do is initiate your trigger model and fetch the data from one triggers worth of data, most of the time it will only give you the LATEST data point.

TRAC:DATA following and INIT command will read back the entirety of your buffer.

That being said, there should not be a difference between the measured values numerically if you use either command, which is why I'd like a copy of your code to see if there is anything causing this large difference in data you are seeing.

Ref attached PNG for above post

Hello,
Connect the instrument to the pc using USB. Then I would recommend downloading and installing NI-VISA, then try with NI-VISA Interactive and see if your instrument is discoverable and allows communication between unit and PC.
Open NI-VISA Interactive and see if the instrument appears.

If this is successful, open Test Script Builder and press Open Instrument button.
Click the Select or Enter New Instrument button.
Look in the list of resources for anything that looks like this USB0::0x05E6::0x2614::nnnnnnn::INSTR (where nnnnnnn is the serial number of the unit). This would be your unit. Select it and send *IDN? to see if unit is able to communicate.
 

Hello,
See the link below for a list of KickStart supported instruments and more information related to KickStart!
Keithley KickStart Software | Tektronix

Dave,
Visit the link below for examples on multi-channel scanning in VB (third option down) as this may give you an idea. You may want to utilize the scan.monitor.channel TSP command to display a specific channel which you could implement for various channels.

Hello,
See the below datasheets for more information. Unterminated and terminated are provided.

Unterminated: https://www.tek.com/en/datasheet/system-46-r-f-microwave-switch-system-data-sheet
Terminated: https://www.tek.com/en/datasheet/system-46t-rf-microwave-switch-system32-channel-te
 

Hello,
You are doing everything right as far as I can tell from what you are doing. ~3ms is the time it takes for the relays on your physical scan card itself to open/close the relays. That, paired with operating overhead such as firmware and other settings will add additional time to the actual time for a scan. The quickest scan possible with the 7700 card is expected to be around that 10ms mark you are hitting. See the video below for a good walkthrough on how to set up your DAQ6510 for the quickest scan possible, as there may be a few tips and tricks you could add in for your setup.

https://www.youtube.com/watch?v=2d0RFuENBvo