Trimble Outdoors 5700 - Manual (Page 63)

5700 GPS Receiver User Guide 4 7
General Operation 3
Op
eration
3.8.2
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 software or the 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.
On Port 3, the output voltage is approximately 0.5 V less than the
input voltage. For example, if power is being supplied from the
internal Lithium ion batteries, the maximum battery voltage is 8.4 V,
so the maximum output voltage is 7.9 V.
Note – When you start a survey using the Trimble Survey Controller
software, and you are using an external radio, the software
automatically enables power output on Port 3.
3.8.3
Firmware
A receiver’s firmware is the program inside the receiver that makes
the receiver run and controls the hardware. You can upgrade the
firmware for the 5700 receiver in either of the following ways:
• Using the WinFLASH software
• Copying the firmware (.elf) file directly to the CompactFlash
card
Trimble recommends that you use the WinFLASH software to
upgrade the firmware. For more information, see WinFLASH
Software, page 71.