User's Manual Part 1

PAF-0813-E0-001 MCPA
044-05287 Rev A 2-3
RS-485 Interface
This RS-485 connector is used for serial communication and as an interface to the system for delivery of
alarms. Grounding pin 8 disables RS-485 communication. Table 2-3 lists the pin descriptions.
Filter I/O (if used)
This port is used for communication with the filter tray associated with the subrack.
MCPA
The controls and indicators for the MCPA consist of an OFF/ON/RESET switch and tri-color LED status
indicator as shown in Figure 2-3 with detailed functions listed in Table 2-2.
Figure 2-3 MCPA Controls and Indicators
Table 2-3 RS-485 Pinout
Pin Description
1 RS-485 RX+
2N/C
3 N/C
4 RS-485 RX-
5 Ground
6 RS-485 TX-
7 RS-485 TX+
8 Select = 1 (Not grounded)
9 Ground
Multi-Color
Status LED
3-Position
Switch:
RESET
ON
OFF
RJ-11
Connector
Alcatel Lucent
STATUS
RESET
ON
OFF
PC I/O
850 MH
z