Topcon GR-5 User Manual

Troubleshooting
GR-5 Operator’s Manual
6-8
• Use a spectrum analyzer to detect the radio characteristics
of the interfering signal and change the system’s
configuration accordingly.
• Remove the source of jamming signal or relocate the radio
antennas (if possible).
The receiver does not start data logging.
D The receiver has no the SDHC card installed or the memory
option is disabled or expired.
• Check that the card is properly inserted. For details,
see “Installing the Optional SDHC and SIM Cards” on
page 2-4.
• Check that the memory option is enabled. For details,
see “Checking the Receiver’s OAF using PC-CDU” on
page 5-12.
D The receiver’s memory card 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
and “Deleting Files from the Receiver’s SDHC Card Using
PC-CDU” on page 5-7).
• Use the AFRM feature. See “Automatic File Rotation
Mode (AFRM) parameters” on page 3-44.
TX RX LED Blink Pattern on
Error Conditions
For internal FH915+/UHF modems: the TX RX LED flashes red.
D A fault condition has been detected.
• Check that the radio modem’s antenna is undamaged.
Contact a dealer to replace the antenna.
• Check that the radio modem’s antenna is securely and
properly connected to the antenna connector.

Topcon GR-5 Specifications

General

Brand	Topcon
Model	GR-5
Category	Receiver
Language	English