Forgive me for such a simple question, how does one stop the alternating green and amber status light on the USB-GPIB-HS+ interface?
Context:
Downloaded the linux gpib 4.1 driver library and compiled on a RPi3. Modified the /etc/gpib.conf file to specify ni_usb_b board type and ibtest and ibterm work great (at least I can do *idn? and set frequency or report frequency on a clock generator). However, the status light on the GPIB dongle is alternating green and amber. I found documentation on the NI site that says:
Alternating Amber/Green | The GPIB-USB-HS+ is not ready to use. You must install (or re-install) the NI-488.2 driver before using the GPIB-USB-HS+. Note: Windows 8 and later suspend power to a USB device that does not have a driver attached. If the LED does not light, try reinstalling the NI-488.2 driver. |
Nothing in the log file indications any kind of problem loading the driver. Given the maturity of this product and drivers, seems like I have missed something.
Thank you.