CSI Wireless GBX, Reference Manual

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GBX Reference Manual 23
applied to pin 2 with a signal ground on pin 5, and is a male DB9
connector. (CSI Wireless PN 051-0009-000)
The GBX-PRO is designed such that the transmit line of the secondary
serial port of its internal G12 GPS receiver (Port B) is connected to pin
6 of the DB9 connector located on the rear panel. The Port 2
connector of this cable provides access to this transmit line on pin 3.
The following table provides pin-out information for this cable. A null
modem and/or gender changer may be required to successfully
interface this cable to an external RTCM source or data logging device.
Table 2-3 ‘Y’ Data Cable Pin-out (PN 051-0009-000)
GBX Port Pin #
DB9 Female
Port 1 Pin #
DB9 Female
Port 2 Pin #
DB9 Male
Description
2 2 - GBX NMEA 0183 / RTCM Output
3 3 - GBX NMEA 0183 Input
5 5 5 Signal Return
6 - 3 G12 Port B GPS Output (GBX-PRO
receiver only)
8 - 2 External RTCM Input (Gx-E Mode only)
9 - - 1 Pulse Per Second Timing Output (TTL,
75
Ω
)