AP Software Configuration via Web Interface
Access Point Deployment Guide
38
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Figure 18.
GPS Signal Information
If the AP has GPS connected to it, GPS values are shown.
Note:
GPS verification MUST occur after completion of physical AP installation.
The columns on this screen are defined in the following table. The rows show the number of
GPS satellites to which the AP receiver is currently locked. For proper GPS synchronization,
there should be a minimum of
five
satellites.
Table 6.
Fields on the Access Point Screen
Column Heading
Description
Sat ID
The Sat ID column provides the name of the GPS satellite to which the AP is locked or is
tracking.
Azimuth
The Azimuth is the direction of a GPS satellite, measured clockwise around the
observer’s horizon from north. Azimuth and altitude or elevation are usually used
together to give the direction of an object in the topocentric coordinate system.
Elevation
The elevation (sometimes called altitude) is the angle at which we see the satellite when
we look up into the sky.
C/N
0
Carrier to Noise (C/N
0
) density ratio is the ratio of the carrier or signal power to the
white-noise spectral density. For the AP GPS receiver to lock to the GPS satellite, the
C/N
0
should be greater than 20 dB-Hz.
