Error handling and diagnostics
CX2550-0179 / CX2550-0279
25
Version: 1.0
6
Error handling and diagnostics
6.1
LEDs Diagon the USB extension
LEDs diagnosis for CX2550-0179
The following table shows the states for the LEDs of the CX2550-0179 (USB 1.1):
Display
LED
Meaning
PWR
Power supply The Power LED lights if the device is
connected to a live power supply unit (green).
SPD
Speed
The LED lights green if an USB device with full speed
( 1,5 MBit/s) is connected.
The LED lights yellow if an USB device low low speed ( 12
MBit/s) is connected.
The LED doesn`t light if the no device is connected.
15 V
The LED lights (green) if 15 V is supplied to USB
extension.
SUS
Suspend
The LED doesn´t light if the USB extension is operational.
The LED lights (red),if the USB extension is in suspend
mode resp. no device connected.
LEDs diagnosis for CX2550-0279
The following table shows the states for the LEDs of the CX2550-0279 (USB 2.0):
Display
LED
Meaning
PWR
Power supply The Power LED lights if the device is
connected to a live power supply unit (green).
HST
Host
The LED lights green if an USB host device is detected.
The LED doesn`t light if the no device is connected.
ACT
Activity
The LED blinks (orange) if there is USB communication
via the USB-E extension.
The LED doesn`t light if there is no communication.
LNK
Link
The LED doesn´t light if the USB extension is not
operational.
The LED lights (green) if the USB extension is connected
and running0.
