NET 300 Series Start-Up Guide
12
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Performance Optimization
After the basic operation of the network has been verified, you may
wish to optimize its performance using the suggestions given below.
The effectiveness of these techniques will vary with the amount of
data being handled.
Optimize Received Signal Strength
Check the received signal strength indicator (RSSI) for an adequate
signal level from the radio network’s Access Point. (RSSI is available
through the
Menu System.) In the absence of interference, signal
levels that are sufficient to provide reliable operation (with a 15 dB
fade margin) are:
≥
–86 dBm @ 256 kbps,
≥
–82 dBm @ 512 kbps.
If the signal levels are lower, it may be necessary to reposition the sta-
tion’s antenna for better reception/signal strength.
Minimize Packet Retries
If the Wireless Packet Statistics’ retry packet counter is unacceptably
high, several techniques can be used to improve it. These include iden-
tifying interference and taking corrective steps such as skipping some
radio frequencies from the hopping pattern, increasing the gain of the
Remote unit’s antenna system, relocating the Remote’s antenna, or
installing a repeater system.
Blocking Out Zones
The transceiver uses channels in the 336–344 MHz spectrum, with
selectable hopping from 1 to 25 channels.
NOTE:
All radios (AP and Remotes) must be set to use the same chan-
nels in order to establish a link. If this is not done, the radios
will not connect.
Usage key for Channel Configuration Menu:
n
(no) = Radio channel is not used
y
(yes) = Radio channel is used
NA
(not available) = Radio channel is not available
Other selections on Channel Configuration Menu:
Clear All
—This command clears all entries in the Channel Config
Menu, resetting the available channels to “no usage.” Channels that
are not available for use will appear with a notation of or
NA
. These
