EDM01-02: DAG 4.2S Card User Guide
©2005
29
Version 7: May 2006
6.3 Synchronization Connector Pin-outs
Description
DAG cards have an 8-pin RJ45 connector with two bi-directional RS422
differential circuits, A and B. The PPS signal is carried on circuit A, and
the serial packet is connected to the B circuit.
Pin assignments
The 8-pin RJ45 connector pin assignments are:
1.
Out A+
2.
Out A-
3.
In A+
4.
In B+
5.
In B-
6.
In A-
7.
Out B+
8.
Out B-
Figure
Figure 6-1 shows the RJ45 plug and socket connector pin-outs.
Figure 6-1. RJ45 Plug and Socket Connector Pin-outs.
Out-pin
connections
Normally the GPS input should be connected to the A channel input, pins
3 and 6. The DAG can also output a synchronization pulse; used when
synchronizing two DAG cards without a GPS input. Synchronization
output is generated on the Out A channel, pins 1 and 2.
Ethernet
crossover cable
A standard Ethernet crossover cable can be used to connect the two cards.
TX_A+
1
3
RX_A+
TX_A-
2
6
RX-A-
RX_A+
3
1
TX_A+
RX_B+
4
7
TX_B+
RX_B-
5
8
TX_B-
RX_A-
6
2
TX_A-
TX_B+
7
4
RX_B+
TX_B-
8
5
RX_B-
Support
For cables and further advice on using GPS and CDMA time receivers
.
