User's Manual

16 How To Troubleshoot Using Loupe 32
7signal Ltd, Panuntie 6, FI-00620 HELSINKI, FINLAND, [phone], [e-mail], www.7signal.com
7signal Sapphire Loupe User Guide Release 3.1
16.2.3 Downlink And Uplink Performance Problem
The network SLA table shows the performance situation of the selected APs.
The table presents downlink & uplink performance problems during the measurement period.
 Wireless or fixed network problem?
Check also these KPIs:
KPI ID / tab
Name
Description
TP/SNR
FTP DL throughput variation as a function
of SNR
The TP/SNR KPI presents if
wireless and/or wired side
conditions change
repeatedly.
AV010
AP Channel information
The AP channel KPI presents
the possible radio channel
changes of managed and
neighbor APs.
QURS001
Channel noise level at Eye and Spectrum-
view
The channel noise level
together with Spectrum-view
presents possible
interference issues and
locations
QURS004
AP retransmission rate
The AP retransmission rate
presents the possible radio
problems between AP and
Clients