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Chapter 2 interfacing, Electrical power, Chapter 2 – NavCom SF-2050 Rev.E User Manual

Page 17: Interfacing

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SF-2050 User Guide - Rev. E

Chapter 2

Interfacing

This chapter details the SF-2050

GPS

sensor connectors

and status display, appropriate sources of electrical
power, and how to interface the communication ports.

Electrical Power

Electrical power is input thru a 4-pin

LEMO

female

connector located on the front panel of the SF-2050,
and labeled ‘DC PWR.’ The pin designations are shown
in Table 1; see Figure 2 for pin rotation on unit.

Pin Description

1

2

Return

3

4

Power Input 10 to 30 VDC

Table 1: External Power Cable Pin-Out

‡

Pins 1 and 2 are connected together inside the

SF-2050

GPS

sensor. Pins 3 and 4 are connected

together inside the

GPS

sensor.

‡

When using an external power cable longer than 5m

(15ft), it is recommended that positive voltage DC be
applied on both pins 3 and 4, and return on both pins
1 and 2.

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