Campbell RF401A Series, Инструкция по эксплуатации

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RF401A-Series Spread Spectrum Radio
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If the Retry Level is increased in a network with poor reception
and many nodes, latency will greatly increase, sometimes to the
point of non-operation if inundated with traffic.
11.1.10 Radio TX Power Level
This setting specifies the power level at which the RF module transmits. Levels
are approximate.
TX Power Level, dBm TX Power Level, mW
7 5
15 32
18 63
21 125
24 250
It is very important that the TX power level selected and the gain of the
attached antenna do not exceed the maximum allowed ERP permitted by local
laws. These rules vary from region to region. For example, in much of the
United States, FCC part 15 rules limit the 900 MHz, ISM band transmission
from this radio to a maximum effective radiated power of +36 dBm. If the
radio is set to transmit at +24 dBm (250 mW), the maximum gain antenna that
may be attached is 11 dBi (~8.5 dBd).
11.2 PakBus®
11.2.1 PakBus Address
This setting specifies the PakBus® address for this device. The value for this
setting must be chosen such that the address of the device will be unique in the
scope of the PakBus® network. Duplication of PakBus® addresses in two or
more devices can lead to failures and unpredictable behavio
u
r in the PakBus®
network. Valid range is 1 to 4094. However, values greater than 3999 are
generally reserved for software products.
11.2.2 PakBus Beacon Interval
This setting, in units of seconds, governs the rate at which beacons will be
broadcast over the Active Interface for the purpose of discovering
PakBus® neighbo u rs. When Active Interface is PakBus Router , beacons
will be sent over RF; otherwise, beacons will be sent over the serial port
selected as the Active Interface . Set to zero to disable beaconing.
If PakBus Verify Interval is set to zero, a verify interval of 2.5 times the
PakBus Beacon Interval will be assumed by the device.
11.2.3 PakBus Verify Interval
This setting specifies the interval, in units of seconds, which will be reported as
the link verification interval in the PakBus® hello transaction message. It will
indirectly govern the rate at which the device will attempt to start a hello
transaction with a neighbo u r if no other communication has taken place within
NOTE