CSI Wireless GBX, Reference Manual

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GBX Reference Manual 17
Table 2-2 provides pin-assignment information for the GBX data port.
The function of pin 2 is dependent upon the mode of operation, as
discussed in Chapter 3.
Table 2-2 GBX Data Port Pin-out, RS-232C Interface Level
Pin # Signal Description
2 TXA GBX NMEA 0183 / RTCM Output
3 RXA GBX NMEA 0183 Input
5 Sig. Ground Signal Return
6 TXB G12 Port B GPS Output (GBX-PRO receiver only)
8 RXB External RTCM Input (Gx-E Mode only)
9 1 PPS 1 Pulse Per Second Timing Output (TTL, 75
Ω
)
To establish communications between the GBX and your data logging
or monitoring device, you must:
•
Connect Pin-2-TXA of the GBX to the receive pin of the monitor
•
Connect Pin-3-RXA of the GBX to Tx of the monitor device if bi-directional
communication is required
•
Connect Pin-5-Common Ground of the GBX to the signal return or common
ground of the external device.
The following figure displays the numbering scheme for the DB9 socket
connector (female), which is located on the rear panel of the GBX
receiver. The associated numbering for the plug connector (male) is a
mirror reflection of scheme showed in this figure.
1
2
3
4
6 7 9
5
8
Figure 2-2 GBX Socket Connector Pin Numbering