User manual

Troubleshooting
6. Check the indicator lights.
The Adapter Status and USB Status indicator lights on the adapter should be in their normal settings. To check them, refer to
the following tables:
Table 1: A dapter Status LED
Color Illumination Description
Solid The GPIB is online and operational. A USB connection is established.Green
Blinking
If in normal operational mode, the GPIB cannot be placed online
because there is not an active USB c onnection or the connected
USBTMC-USB488 device is not a Tektronix instrument.
If in the firmware upgrade mode, the firmware upgrade has completed
successfully.
Solid A firmware upgrade is in process.
Firmware upg rade mode: A USB mass storage device is detected,
which contains the firmware upgrade file.
Yellow
Blinking
Non firmware upgrade mode: The GPIB cannot b e placed online due to
an error detected by the GPIB driver.
18 TEK-USB-488 GPIB to USB Adapter User Manual