Wilan LIBRA 5800 AP, User Manual

Page: 43 / 156

PDA Setup Menu
June 2003 Rev 0 43
OFDM Channel Statistics:
The following values are displayed in real time on the Setup menu to help the installer determine how
well the Libra unit is communicating with the Access Point. These values are as follows:
Link Test:
Once the unit has been configured as desired, the Link Test option can be selected from either setup
screen. This results in test data being transmitted to and from the Libra unit. Statistcs for RSSI and
BER (coarse and fine values) and shown in real-time to allow the person setting up the unit’s
antenna to adjust it for the best performance in terms of signal strenght, BER and Fade Margin.
Note: When the Libra-5800 is configured as a point-to-point unit, the "Dest Radio Id" field is not
selectable.
OFDM Channel Statistics
RSSI (dBm)
Received Signal Strength Indicator in dBm
Null Depth (dB)
Difference in dB between the lowest signal sub carrier and the
highest signal sub carrier. This value is an indication of the level of
multi-path signals present in the link.
Fade Margin (dB)
Signal-to-noise ratio of the signal; value in dB above the rated
sensitivity of the modulation type (e.g. -75 dBm for 16QAM)
RF Link Status
This indicates whether any data is being transmitted from the Libra
unit.
OFDM Channel Statistics
RSSI (dBm) -22
Null Depth (dB) 25
Fade Margin (dB) 45
RF Link Status Connected
Link Test
Link Test Type -> Coarse (xE-5)
Dest Radio Id 26
Start Link Test
Logout
Press ESC to go to setup screen