Operation; Led Status Monitors - Patton electronics 1205RC User Manual

Once you have configured the Model 1205RC 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 1205RC features 13 front panel status LEDs that indi-
cate the condition of the Model 1205RC and the two ports, A & B (see
Figure 9, above):
Figure 9. Model 1205RC front panel, showing LED indicators.
• The green "PWR" LED glows green when power is applied to the
Model 1205RC through its mid-plane chassis connection.
• Two "TD" LEDs monitor the status of each port's data transmis-
sion. 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 transmis-
sion is occurring.
• Two "CD" LEDs monitor the status of each port's carrier detect sig-
nal. 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).
• Two "DTR" LEDs monitor the status of DTR for each port. The red
LED glows to indicate that the host device connected to that port
is not ready to communicate (negative condition). The green LED
glows to indicate that the host device connected to that port is
ready to communicate (positive condition).

5.0 OPERATION

Model 1205RC
Power
TD
Port
CD
A
DTR
TD
Port
CD
B
DTR
12