User's Manual

Chapter 3 - Commissioning
3.3 Configuring the Subscriber Unit’s
Maximum Modulation Level
or This section describes how to configure the maximum modulation level f
Subscriber Units.
NOTE
If the unit is associated with the AU, then the final configuration of the Maximum Modulation Level
parameter may be performed remotely, for example, from the site of the AU or from another site.
To configure the Maximum Modulation Level:
value that is lower
than the maximum supported by the unit. This can decrease the number of
r transmissions due to attempts to transmit at modulation levels that are too
high for the actua
2 Check the SNR of the SU at the AU. You can use Telnet to view the SNR
values in dress D h can be accessed from the Site
Survey m TPC al he
test sho ne with the In Level at the SU configured to its
maximum value. If the SNR d for the
maximum modulation level ac ommended that
you decrease the value of the
1 If the SNR of the SU at the AU is too low, it is recommended that you
configure the Maximum Modulation Level parameter to a
e
l quality of the link.
the MAC Ad atabase, whic
enu. If the A
uld be do
gorithm is not enabled in both AU and SU, t
itial Power
is lower than the values require
cording to Table 3-2, it is rec
Maximum Modulation Level.
NOTE
The SNR measurement at the AU is ac e curate only when receiving transmissions from th
applicable SU. If necessary, use the Ping T he Site Survey menu to verify data est utility in t
transmission.
3 Configure the Maximum Modulat 3-2, using the
typical S eco added to
compens ible mea ality of
the link.
ion Level according to Table
mmended that a 2 dB margin beNR values. It is r
ate for poss surement inaccuracy or variance in the qu
BreezeACCESS 4900 System Manual
46