NavCom SF-3040 Rev.F - Manual (Page 67)

SF-3040 Product User Guide
– Rev. F
3-65
Chapter 3 ................................. Interfacing
This chapter details the SF-3040 GNSS receiver
connectors, LED display, appropriate sources of
electrical power, and how to interface to the
communication ports.
Battery Power
Two supplied removable Lithium-Ion battery packs
(PN 98-214946) provide power. Each of the two
battery packs is designed to last 3.5 hours, 7 hours
with both batteries, on a single charge with all GNSS
channels turned on (discharge time varies based on
environmental conditions and mode of operation).
With only L1, L2 and StarFire channels turned on,
each battery will last 4 hours, 8 hours with both
batteries. The smart battery interface allows the
batteries to be hot-swapped on the fly.
When battery 1 voltage is low, the receiver
automatically switches to battery 2 to provide
continuous power. For more information on the
battery packs, refer to the following:

Chapter 6, Batteries

Chapter 8, Safety Instructions

As long as the input voltage on the
external power connector is >9.0 V, the
power input will be from that connector
and the internal batteries will be in
standby mode. This is automatically
selected in the power input output (PIO)
hardware. If the unit does not have an
external power source and is running on
batteries, if an external power source is
connected, the PIO hardware
automatically switches to the external