5.2 POWER-UP
There is no power switch on the Model 1206RC: Power is
automatically applied to the 1206RC when its card-edge connector
makes contact with the chassis’ mid-plane socket, or when the chassis’
power supply is turned on.
Note: The 1206RC is a “hot swappable”
card—it will not be damaged by plugging it in or removing it while the
rack is powered up.
When the Model 1206RC is powered up, and both ports are passing
data
normally
, the following LED conditions will exist:
• PWR = green
• TD = blinking red and green
• CD = green
12
5.0 OPERATION
Once you have configured the Model 1206RC and connected the
cables to host A and host B, you are ready to operate the unit. This
section describes the LED status monitors and power-up procedure.
5.1 LED STATUS MONITORS
The Model 1206RC features 9 front panel status LEDs that indicate
the condition of the Model 1206RC and the two ports, A & B (see
Figure 9, above):
• The green “PWR” LED glows when power is applied to the Model
1206RC through its mid-plane chassis connection.
• Two “TD” LEDs monitor the status of each port’s data transmission.
The red LED glows when the signal is in an idle (negative) state.
The green LED glows when the signal is in a transmitting (positive)
state. Both LEDs will normally blink when data transmission is
occurring.
• Two “CD” LEDs monitor the status of each port’s carrier detect
signal. The red LED glows when the receive channel is not active
(negative condition). The green LED glows when the receive
channel is active (positive condition).
11
Figure 9.
Model 1206RC front panel, showing LED indicators.
