Product specifications

CDD-880 Multi Receiver Router Revision 0
Rear Panel Connector Pinouts MN-CDD880
3–3
3.4 Utility Connections
3.4.1 (FUTURE) REDUNDANCY Connector, DB-9F
The REDUNDANCY connector provides the 1:1 control (redundant
switch) interface via a 9-pin Type ‘D’ female (DB-9F) connector. It is
intended for future connection to a CRS-500 M:N Redundancy System.
The connector provides serial communications to transfer configuration
information from the Prime to the Backup router and a Fault/Clock signal to
signal the switch when a fault occurs.
The connector pinouts are as follows:
Pin # Name Signal Function Type
1 GND Chassis Ground Gnd
2 MDM_COM_IN UART comm to modem from controller
(9600 to115.2BUAD)
LVTTL Input
3 TX_IF_MUTE_B Capability to mute modem’s Tx IF (Low=Mute) (Use pull-up
on Modem side input)
LVTTL Input
4 ONLINE Commands modem to be Online/Offline
(Use pull-up on Modem side input)
LVTTL Input
5 MDM_COM_OUT_ENA Enable “Mdm_Comm_Out” signal LVTTL Output
6 MDM_COM_OUT UART comm. from modem to controller
(9600 to115.2BUAD)
LVTTL Output
7 SER_CLK Fault Serial Clock Signal 64KHz LVTTL Output
8 SER_DATA Fault Serial Data Signal from modem LVTTL Output
9 12VOLT_OUT +12 Volts at 300 ma 12V 300 ma
3.4.2 CONSOLE (Remote Control Interface) Connector, DB-9M
The CONSOLE connector provides the remote control interface via a 9-pin
Type ‘D’ male (DB-9M) connector. The settings for this serial interface are
always 38400/8-N-1. It is intended for connection to an M&C computer or
terminal device for EIA-232.
The connector pinouts are as follows:
Pin # Description Direction
1 Ground –
2 EIA-232 Transmit Data Out
3 EIA-232 Receive Data In
4 Reserved - do not connect to this pin –
5 Ground –
6 Reserved –
7 Reserved –
8 Reserved –
9 Reserved –