Topcon GR-3 User Manual

Receiver and File Maintenance
GR-3 Operator’s Manual
5-14
Using PC-CDU to Clear the NVRAM
1. Connect your receiver and computer. See “Connecting the
Receiver and a Computer” on page 2-20 for this procedure.
2. Click ToolsClear NVRAM (Figure 5-17).
Figure 5-17. Clear NVRAM with PC-CDU
While the NVRAM clears, the REC LED flashes green and red; the
STAT LED flashes red. The receiver automatically disconnects when
finished.
Changing Receiver Modes
The receiver has the following three modes, two information modes
and one power modes:
• Normal Mode – the standard surveying mode.
• Extended Information Mode – used for testing purposes during
normal operation.
• Sleep Mode – used to stop recording data, but keeps the receiver
powered on “standby.”
Entering Extended Information Mode
Extended Information Mode (EIM) is used for receiver testing
purposes. In this mode, the receiver continues to work as usual, but
the STAT LED indicates “extended” information using a delimiter.
The Delimiter is a distinguishable double-blink that shows the overall
status of tests performed in EIM. The STAT LED color for delimiter
is calculated from the colors of other LED blinks, and becomes one of
the following colors when the tests complete:
• Orange – at least one blink is orange.
• Red – no orange blink and at least one red blink.

Topcon GR-3 Specifications

General

Brand	Topcon
Model	GR-3
Category	Receiver
Language	English