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.
2-15
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