7 Cables and Connectors
36 Epoch 25 L1/L2 GPS System User Guide
7.1 Port 1 and 2 connectors
Figure 7.1 Port 1 connector pinouts
Figure 7.2 Port 2 connector pinouts
7.2 Power/serial data cables
A data-I/O cable is supplied with the receiver. Attach the cable to the connector.
Use the data-I/O cable for firmware upgrades to the receiver. Supply power must be
supplied to the receiver through Port 1 or Port 2, or from the internal battery.
Port 1 Port 2
Pin Function Pin Function
1N/C 1 N/C
2 Serial Port 1 RXD 2 Serial Port 2 RXD
3 Serial Port 1 TXD 3 Serial Port 2 TXD
4N/C 4 N/C
5 Ground 5 Ground
6N/C 6 N/C
7 Serial Port 1 RTS 7 Serial Port 2 RTS
8 Serial Port 1 CTS 8 Serial Port 2 CTS
9 +V in 1 9 +V in 2 / +V out 2
Pins 9 8 7 6
Pin s 5 4 3 2 1
Pins 9 8 7 6
Pin s 5 4 3 2 1
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