User manual

Troubleshooting
Table 1: Adapter Status LED (cont.)
Color Illumination Description
Solid The adapter sensed an attempted connection of a USB connection to
a non USBTMC-USB488 device. The adapter refused to make the
connection.
Red
Blinking
If in operational mode, the power-up self test failed.
If in the firmware upgrade mode, the firmware upgrade failed.
None
Off If in operational mode , the GPIB is off line.
It may also mean that the adapter is not powered on.
Table 2: USB Status LED
Illumination Description
Off No USB connection is present
Solid A USB connection is present, and there is no activity
Blinking
A USB connection is prese nt, and data is being transferred on any of the USB endpoints.
TEK-USB-488 G PIB to USB Adapter User Manual 19