26
Startup and Operation
6.4
Antenna Key Displays
Press the
ANTENNA
key a few times to move between screens related to antenna performance,
GNSS tracking, as well as the antenna’s geographical position.
6.4.1
GNSS Tracking
To view the number of satellites being tracked, use this display. GNSS receivers can track up to 32
satellites of the multiple satellite systems.
GNSS TRACKING
GPS:08 GLN:06 GAL:08
6.4.2
GNSS Signal-to-Noise Ratio
Signal to Noise describes the signal power to noise power as a ratio in decibels (dB). For example,
40 dB means that the signal power is 10,000 times stronger than the noise.
GNSS SIGNAL/NOISE
GPS:34 GLN:30 GAL:38
6.4.3
GNSS Setting
GNSS Setting indicates which satellite systems are being used in the clock. In this case either US
GPS, Russian GLONASS or both systems can be used.
GNSS SETTING
GPS:ON GLN:ON GAL:ON
6.4.4
Antenna Status
Antenna Status provides the voltage and current supplied to the GNSS antenna. Values indicated
in the display below are fairly represent the Arbiter GNSS antenna at the time of this writing. The
clock can supply a range of voltage values to accommodate different antennas.
STATUS: GOOD
5.02 V,
29 mA
If the display indicates that the clock is not tracking satellites (00) make sure that the antenna
is mounted outside and in the clear from surrounding elements that may block the GNSS signals.
Also see Section 4.2 for information on troubleshooting antenna problems.
Note that the last screen indicates that the status is good and that the voltage and current are
correct for a GNSS antenna.
6.4.5
Position Display Modes
The clock has two modes of operation: normal and demo. If the clock starts in the normal mode
and is acquiring satellites, the position information is the last position fix stored in the clock’s
memory while locked to at least four satellites. If the clock starts in the demo mode, then it will
determine the position from scratch - no position information is stored.