Filter
Top Products
Checking the LEDs
296-1011-202 Rel. 5.0, Doc. Rev. 02.01 2-51
Chassis Connections
Optical DAC
The following figure shows the LEDs on the Optical DAC-SM:
LEDs on the Optical DAC-SM
The following table describes the LEDs on the Optical DAC-SM:
LED State Meaning
Power Off Power off
On (green) Power on
Good On (green) Successful system boot: no errors
detected
Off No power: failure detected or on standby
Flashing green Code loading during system boot
Fail Off No power
On (red) Failure detected
Redun Off No power or no redundancy
On (green) A working redundant configuration
LOF Off Normal
On (orange) The SONET/SDH framing bytes for A1 or
A2 are wrong or corrupted.
LOS Off Normal
On (orange) The designated port has a loss of carrier
condition, due to a faulty connection with
an SC connector on the receive side or a
physical break in the fiber.
Note: There are no LEDs on the Optical DAC-LTMs.
STM1/OC3 x 2
Pwr
Good
Fail
Redun
CVX-0144B
LOF LOS
A1
B1
A2
B2