C-Nav 2050, User Manual

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2050 User Guide
Note – Voltages less than 10VDC will shut the unit down. When power is restored, the ON switch will need to
be held down for more than 3 seconds.
Voltages in excess of 30VDC will damage the unit. It is extremely important to ensure that the power
supply is well conditioned with surge protection. This is especially true for vehicular electrical
systems, which can create voltage spikes far in excess of 30VDC.
Communication Ports
The 2050 GPS sensor is fitted with two 7-pin female LEMO connector communication ports
located at the bottom front of the GPS sensor as shown in Figure 2 labeled COM 1 and
COM 2. Each conforms to the EIA RS232 standard with data speeds between 1200 bps and
115.2kbps. The pin-outs for these connectors are described in Table 2. An interface data
cable (C&C P/N 4250003-6) is supplied with the 2050 for easy startup. The cable
construction is described in Figure 4.
LEMO
Pins
Signal Nomenclature
[ DCE w/respect to DB9 ]
DB9S
Pins
1 CTS Clear To Send 8
2 RD Receive Data 2
3 TD Transmit Data 3
4 DTR Data Terminal Ready 4
5 RTN Return [Ground] 5
6 DSR Data Set Ready 6
7 RTS Request To Send 7
Table 2: Serial Cable Pin-Outs
2-8