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5700/5800 GPS Receiver User Guide 47
General Operation 4
5700 GPS Receiver Operation
Figure 4.3 Charging receiver and controller batteries
47.3 Power output
If the receiver is being supplied with power from an external source,
power is automatically output on Port 1. The output voltage is
approximately 0.5 V less than the input voltage. Port 1 outputs a
maximum voltage of 20 V, even if the input voltage is higher.
You can use the GPS Configurator or Trimble Survey Controller
software to enable power output on Port 3. Port 3 can be enabled for
power output regardless of whether power is supplied internally or
externally.
2
3
t
To AC
Power/serial data cables
power supply