Topcon HiPer Ga, Operator'S Manual

Page: 125 / 162

Receiver Problems
P/N 7010-0816
6-9

The Base and Rover modems use different radio link
parameters.
Configure the Base and Rover radio modems according to the
procedures listed in the applicable section.
• For details on a configuring a Satel radio modem, see
“Configuring the Radio Modem,” on page 3-3.

The distance between the Base and Rover is too far.
• Close the distance between the Base and Rover. The
reliable radio range of the HiPer Ga/Gb is 2–4 miles
(3.22–6.44 km). This range varies greatly depending on the
power of transmitter, radio antenna height, surrounding
radio and natural environments.
• Use repeaters to increase radio coverage.

There may be a source of radio interference that disrupts radio
communications.
• Change the RF channel (if possible).
• Use a spectrum analyzer to detect the radio characteristics
of the interfering signal and change your system’s
configuration accordingly.
• Remove the source of jamming signal or relocate your
radio antennas (if possible).
The receiver does not log data

The memory option is disabled or expired.
• Check that the memory option is enabled. For details, see
“Checking the Receiver’s OAF,” on page 5-10.

The receiver’s memory has no free space.
• Download and/or delete data files to free up space for new
files (see “Downloading Files to a Computer,” on page 5-1.
• Use the AFRM feature. See “Automatic File Rotation
Mode (AFRM) parameters,” on page 3-21.