NavCom RT-3020 Rev.F - Manual (Page 34)

RT-3020 User Guide – Rev. F
Technical Reference Manual, 0x32
Power Mode Configuration.
Voltages in excess of 30VDC will
damage the unit. The power supply
must be well conditioned with surge
protection. Vehicular electrical systems
which create voltage spikes in excess
of 30VDC will benefit from providing
power protection during vehicle engine
power-up. This can be accomplished
through a relay power-on sequence
and/or power conditioning (such as a
DC to DC converter). Do not connect
equipment directly to the vehicles
battery without in-line protection (such
as a DC to DC converter).
Communication Ports
The RT-3020 provides two 7-pin female LEMO
connector communication ports labeled COM1 and
COM2 located at the bottom front of the sensor, as
shown in Figure 5. Each conforms to the EIA RS-232
standard with data rates from 1.2 to 115.2kbps. The
connector pin-outs are described in Table 4. The
supplied interface data cable (P/N 94-310059-3006)
is constructed as described in Figure 6. The RT-3020
is configured as a DCE device. Laptop and desktop
computers are configured as DTE devices, therefore
a straight-through cable provides proper connectivity
(PC TXD pin 2 connects to RT-3020 RXD pin 2).
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