Quad E1 Data Interface Connectors; Table 3-6. Quad E1 Data Interface J1-J4 Connector Pin Assignments; Table 3-7. Quad E1 Clock Interface J5, Db-9F Connector Pin Assignments - Comtech EF Data CDM-Qx Installation And Operation Manual

CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier®
Rear Panel Connectors
3.3.5

Quad E1 Data Interface Connectors

Table 3-6. Quad E1 Data Interface J1-J4 Connector Pin Assignments

Pin #
1
2
3
4
5
6
7
8
The J5 Ext Ref connector is a 9-pin Type 'D' female (DB-9F) connector on the interface card that
provides two functions:
1. The first function is to provide an output E1 clock for the user to use as an E1 clock
reference (if needed for the terrestrial E1 equipment).
2. The second purpose of the connector is to allow the user to provide a reference E1 input
clock. The user can then use this E1 clock input to drive the demodulator receive buffer.
Refer to Chapter 5. FRONT PANEL OPERATION, in particular the section outlining
Config

Table 3-7. Quad E1 Clock Interface J5, DB-9F Connector Pin Assignments

Pin #
1
2
3
4
5
6
7
8
9
The Quad E1 Data interface card allows the user to connect
one to four different terrestrial E1 ports, with each port
independently configurable for full E1 (framed or unframed E1
data), or fractional E1 (with D&I). These four RJ-45 ports –
labeled J1 Port 1 through J4 Port 4, respectively, on the
interface card – must be synchronized to each other.
Signal Function
DDI (+)
DDI (-)
Ground
IDO (+)
IDO (-)
Ground
Unused
Unused
Rx Buf RX BUFFER CLOCK SOURCE
Signal Function
E1 Clk Ref Out (-)
Unused
Ground
Unused
E1 Clk Ref In (+)
E1 Clk Ref Out (+)
Unused
Unused
E1 Clk Ref In (-)
Name
Port_Tx+
Port_Tx–
Gnd
Port_Rx+
Port_Rx–
Gnd
NC
NC
, for further information.
Name
E1 Clk Out (-)
NC
Gnd
NC
E1 Clk In (+)
E1 Clk Out (+)
NC
NC
E1 Clk In (-)
3–9
Revision 7
MN/CDMQX.IOM
Direction
In
In
--
Out
Out
--
--
--
Direction
Out
--
--
--
In
Out
--
--
In