Led Functions; Pwr - Power; Mb - Ring Speed - Cabletron Systems MCC-16 User Manual

3.3 LED FUNCTIONS

This section describes the LEDs on the MCC-FRIO. Consult
Table 3-2 and Table 3-3

3.3.1 PWR - Power

The PWR LED remains lighted GREEN during normal operation,
indicating the reception of power. If the LED is off, the CM is not
receiving power.

3.3.2 16 Mb - Ring Speed

The 16 Mb LED lights YELLOW to indicate a 16 Mbps ring speed.
An unlit LED indicates a 4 Mbps ring speed.
to help interpret LED indications.
MCC-FRIO
PWR
PWR P1
RI
16 Mb
16 Mb
P
1
TX
RI
RX
RO
P2
TX
RO
RX
P
2
Figure 3-4 MCC-FRIO LEDs
P1
RI
RO
P2
MCC-FRIO SETUP
Figure 3-4,
3-5