User's Manual

FreeWave Technologies Spread Spectrum Transceiver User Manual

900 MHz and 2.4 GHz

V5.0S

Radio Statistics

Option (4) in the main menu allows the user to view data transmission statistics

which have been gathered by the Transceiver during the most recent session.

This is of value when the user wishes to look at signal strength, noise levels, and

the distance of the link between transceivers. Statistics are gathered during each

data link and are reset when the next link begins.

Ideally, noise levels should be below 30, and the difference between the average

signal level and average noise level should be 15 or more. High noise levels tend

to indicate other sources of RF interference, while low signal levels indicate a

weak link. The following sections provide information useful to the process of

troubleshooting and improving radio links.

Average Noise Level

The average noise level indicates the level of background noise and interference

at this modem and at each of the modems used as repeaters in the link. The

number is an average of the noise levels measured at each frequency in the

modems’ frequency hop table. The individual measurement values at each

frequency hop channel are shown in the frequency table. The frequency table is

accessed by pressing the ENTER key on the computer when the radio statistics

menu is displayed.

Figure 12: Modem statistics