User's Manual

Trimble R7/R8 GPS Receiver User Guide 33
Setting up the Receiver 3
Trimble R7 GPS Receiver Operation
or rover radio. For more information about the power
capabilities of the Trimble R7 receiver, see Batteries and Power,
page 44.
6. Configure the external radio using Trimble Survey Controller
software. Alternatively, you can configure a TRIMMARK 3 radio
using the WinFlash software or the configuration software
supplied with the radio.
For more information, refer to the Trimble Survey Controller User
Guide or the appropriate Help.
7. Set up any other equipment as required, depending on whether
you are using the radio as a reference or a rover radio.
30.1 Cellular modems
You can use a cellular modem instead of a radio as your data
communications link. Cellular modems and other radio links can be
used to extend the limits of your surveys.
To connect a cellular modem to a Trimble R7 receiver, you need the
following:
• A Trimble R7 receiver
• A custom-designed cellular modem, or a cellphone that can
transmit and receive data
• Serial (cellphone to DB9) cable (supplied with the cellular
modem or phone)
• Trimble DB9 to 0-shell Lemo cable
This cable is suitable only if flow control can be disabled
on the cellular modem. If the cellular modem does not support
this functionality, a special cable is required. For more
information, refer to the document Using Cellular and CDPD
Modems for RTK, which is available from your local Trimble
Distributor.