Series 2200 - USBTMC Error - Device not found

Hello,

I have Windows 10, NI VISA 19.0, and Keithley 2200-60-2. But this power supply is not visible in NI MAX nor is it visible in Device Manager or Windows's USBview.exe. I need help in getting it to be recognized by the computer.

The DC power supply is setup for USBTMC (front panel menu (shift 1)> system>communication>USBTMC+enter). I have plugged in a USB type A(PC) to USB type B (power supply). I have confirmed the cable works with other devices. I have communicated via USBTMC with DAQ6510 and with a non-USBTMC device.

I would update firmware first but lack ability as the device is not shown anywhere.

Device information:
Model: 2200-60-2
Ver: 1.26-1.23
SN: 9080005

Thanks,
-Greg

I've been looking at this and came up with a possible solution. Could you please indicate whether this process is acceptable.

https://forum.tek.com/viewtopic.php?t=112620

As no USB is detectable I was planning on the following.

1. Remove RS232 shield from back of device.

2. Connect serial to PC. (I'm using a usb to serial converter cable)

3. From OFF, press and hold shift and power button.

4. From upgrade software, menu press enter to upgrade mainframe.

5. Run update.exe and upload V1.28 to Keithley power supply

Reason I believe this is the correct path. Link attached and when I downloaded the firmware package and unpacked, it resulted in 4 files under the 2200-CPU-V1.28. Running the update.exe shows a pull-down menu with a title RS232 Port.

Is this a good path?

The link to the post on the older forum does illustrate the procedure to update the firmware on the 2200-60-2 and similar models.
The firmware update procedure is expecting a connection on the (otherwise factory use only) RS-232 port.

I'm not sure the revised firmware will address your initial issue of no detection of the USBTMC.
But it is worth a try certainly.
I do not expect the SCPI commands to be functional over RS-232;  only USB or GPIB.

If your PC with NI VISA and that USB cable can detect other instruments (DAQ6510), but not the 2200 power supply, I suspect the 2200 power supply may have a malfunction and requires service.

Hi Andrea,

Update was successful. But you are correct. It seems the USBTMC is a larger issues that needs a firmware update. I'll have to see what we want to do.

Thanks,
-Greg

Hi Greg,

I doubt if this will help, but just in case I wanted to mention to double check the Windows Device Manager.
If Windows has mistake in how it categorized the USB connected instrument, then it would prevent proper association to the USB Test and Measurement device type, the IVI components, showing up in NI-MAX, etc.
Sounds like your specific unit is not being enumerated at all by Windows.
However, if it was instead being detected and assigned to "Other devices" or something else, this could account for the trouble.
Sometimes, if no driver is present when the usb is first plugged in, an incorrect categorization is made and Windows will just repeat it even after a driver has been installed.
In that case, delete the incorrect entry from Device Manager and then un-plug and re-plug the USB connection and see if it will correct the association to USBTMC.



 

Hello Andrea,

I thought about that too before coming to the forum.

When using any other device, Windows device manager refreshes the screen when a device is plugged in (miscategorized or not). In the case of this unit, the windows is not refreshed. I just double checked some pull-down sections (Ports, USB, the hidden USBTMC, and so on) but couldn't find a device named Keithley.

Thanks for the suggestion!

-Greg

Hello Greg,

     It won't show up with a Keithley name. Instead It will be just something like "unidentified device" or "Com 6"

Best Regards,

Jacob Mason

Hello Jacob,

Good to know. I have already looked at all devices to see if there was an icon indicating an error or any unidentified COM device. I also confirmed what all connected COM devices through USBview (Bluetooth module and peripherals) prior to making this post.

As mentioned, the Device Manager does not update when I plug the USB connected to the power supply. Whenever I connect any other device Windows detects the hardware and the device manager refreshes the list. In the case of this power supply, it does not happen.

I presume that means a repair. I will see if it is worthwhile or maybe I'll open it up and see if I can see any data on the lines after the socket.

Regards,

-Greg