GE Energy
D20/D200
Installation and Operations Guide
General 994-0078-2.00-7
Full
117
Operation
, continued
Media Interface
Cards LED
Indicators
The 10BASE-T and 10BASE-FL modules have six indicators on the front panel for
each channel.
Note:
The 10BASE2 module has no indicators.
Indicator
Function
Description
10BASE-T
XMT
Transmit
Flashes when transmit traffic present
CLS
Collision
Flashes on when a collision is detected
LTF
Link Test Fail
On when link is operational
RCV
Receive
Flashes when receive traffic detected
POL
Polarity
On when receive polarity is reversed
JAB
Jabber
On when jabber detected, transmitter disabled
10BASE-FL
XMT
Transmit
Flashes when transmit traffic present
CLS
Collision
Flashes on when a collision is detected
LMO
Link Monitor
On when link optical signal is normal
RCV
Receive
Flashes when receive traffic detected
JAB
Jabber
On when jabber detected, transmitter disabled
PWR
Power
On when power supplied to the MIC
RS-232 Switch
Panel:
Active/Standby
Switch
Operation
Refer to “RS-232 Switch Panel: ” on page 41 for a description of the function of the
Active/Standby switch on the front of the RS-232 Switch Panel.
The Active/Standby switch has a center “locked” position. To operate the switch,
pull it straight out, then switch it down to make CCU B active, or up to make CCU A
active. If the Active CCU is not working properly, the system will automatically
initiate a failover to the Standby CCU.
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