User's Manual

4 General Operation
50 Trimble R7/R8 GPS Receiver User Guide
Trimble R7 GPS Receiver Operation
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.
47.4 Firmware
A receiver’s firmware is the program inside the receiver that makes the
receiver run and controls the hardware. When you need to upgrade the
firmware for your Trimble R7 receiver, Trimble recommends that you
use the WinFlash software. For more information, see The WinFlash
Software, page 69.
C
WARNING – Upgrading the firmware deletes all application files on the
Trimble R7 receiver.
An alternative method of upgrading your firmware is to copy the .elf file
directly to the CompactFlash card from your computer:
1. Connect the CompactFlash card to your desktop computer.
2. Using Windows Explorer, copy the .elf file from your computer to
the CompactFlash card.
3. Disconnect the CompactFlash card from your computer and
insert it into the receiver.
4. Turn the receiver off.
5. Hold down [D] and press [P].
The receiver starts up in Monitor mode, automatically detects
the newer version of the firmware, and installs it. In Monitor
mode, the red SV Tracking LED is lit solidly and the yellow
Logging/Memory LED flashes slowly.
The upgrade takes about two minutes. Once the upgrade
procedure is complete, the receiver restarts automatically.