USER’S GUIDE SF-2110, Руководство пользователя

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SF-2110 User Guide – Rev. A
The GPS sensor is protected from reverse polarity
with an inline diode. It will operate on any DC voltage
between 9 and 36 VDC, 5 watts (maximum).
‡
Voltages less than 9VDC will turn the
unit off. To turn the unit on, power
must be in the 9 to 36 VDC range.
Press and hold the I/O switch in for
more than 3 seconds.
Communication Ports
The SF-2110 provides two 9-pin female Positronic
connector communication ports labeled Port A and
Port B located at the back of the sensor, as shown in
Figure 8. Each conforms to the EIA RS232 standard
with data rates from 4.8 to 115.2kbps. The connector
pin-outs are described in Tables 4A and 4B. The
supplied interface data cable (P/N 94-310260-
3006LF) is constructed as described in Figure 7. The
SF-2110 is configured as a DCE device. Laptop and
desktop computers are configured as DTE devices,
therefore a straight-through cable provides proper
Voltages in excess of 36VDC will
damage the unit. The power supply
must be well conditioned with surge
protection. Vehicular electrical systems
which create voltage spikes in excess
of 36VDC 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).
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* Consult Release Notes on the NavCom web site for availability.