GE GFK-2489 user manual Lost Data Frags

7

When troubleshooting throughput quality issues, a check should also be made of the Radio Packet Statistics Screen. This menu provides a review of packet statistics from a radio link (RF) perspective.

Radio Packet Statistics Menu

Overflow	0	Failed	0
No Ack	55	Over the Air Data	5575
Lost Data	0	Frags	6773
Timeout	0	Retries	4
Good Data	5630	Diags	211

A) Packets Received by Zone

Select a letter to configure an item, <ESC> for prev menu

It is also helpful to check the RSSI of incoming signals. If the RSSI levels in each zone are within a few decibels (dB) of each other, but less than –90 dBm, then check the aiming of the antenna system. See “Aiming Directive Antennas for Maximum RSSI” in chapter 6 for details.

The average signal level should be –95 dBm or stronger for reliable performance with an allowance for fade margin.

Another place to look for trouble is in Packets Received by Zone. The packets should be evenly distributed across all zones (1-5% variation). If they are not, interference in the disparate zones should be suspected. Blocking these zones may eliminate or reduce harmful interference.

Skip Zones Menu

A) Zone #1	Active	E) Zone #5	Active
B) Zone #2	Active	F) Zone #6	Active
C) Zone #3	Active	G) Zone #7	Active
D) Zone #4	Active	H) Zone #8	Active

I) Commit Changes

Select a letter to configure an item, <ESC> for prev menu

When dealing with radio interference troubles, be sure to review A Word About Radio Interference in chapter 6.

7-6 TranSphere TS Wireless Extended Range IP Networking Transceivers – January 2008 GFK-2489