Endace Measurement Systems Ltd
EDM01.05-01r1 DAG 4.3GE Card User Manual
www.endace.com
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's 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
email
.
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Revision 6. 22 September 2005.
