Datasheet

1-4
PA-4E1G Serial Port Adapter Installation and Configuration
OL-3065-05
Chapter 1 Overview
LEDs
LEDs
The PA-4E1G has one row of three status LEDs for each port and one ENABLED LED. (See Figure 1-4.)
The green- and amber-colored LED for each port indicates port status.
Figure 1-4 PA-4E1G LEDs—Partial Front-Panel View
After system initialization, the ENABLED LED goes on to indicate that the port adapter has been
enabled for operation.
The following conditions must be met before the PA-4E1G is enabled:
• The PA-4E1G is correctly connected and receiving power.
• A valid system software image for the port adapter has been downloaded successfully.
• The system recognizes the PA-4E1G or a VIP with a PA-4E1G.
If any of the above conditions are not met, or if the initialization fails for other reasons, the enabled LED
does not go on.
Table 1-1 lists port LED colors and indications.
Cables, Connectors, and Pinouts
This section describes the port adapter cables for data communications and the PA-4E1G interfaces.
Each PA-4E1G provides up to four 15-pin, D-shell (DB-15) receptacles, which support only
E1-G.703/G.704 interfaces.
The PA-4E1Gs use a DB-15 receptacle for both the balanced and unbalanced ports. The label on the port
adapter indicates if the ports on that port adapter are 75-ohm or 120-ohm. (See Figure 1-1 and
Figure 1-2.)
H9602
EN
0
LB LA
RA
Table 1-1 PA-4E1G LEDs
LED Label Color State Meaning
Enabled (EN) Green On Port adapter is enabled for operation.
Loopback (LB) Amber On Line or local loopback is active.
Local alarm (LA) Amber On A loss of signal (LOS), a loss of frame (LOF), an alarm
indication signal (AIS), or any combination of these is
detected.
Remote alarm (RA) Amber On A remote source indicates an error on its incoming signal.