Microhard Systems IP920, Руководство по эксплуатации

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IP920 Operating Manual: Chapter 4 Configuration
25
Network Name:
This is a unique ID for a radio network. All units inside
the same network should have the same network name. Network name is
also a factor used by the system to generate the hopping pattern. This
network name is also a seed to generate an encryption key to encrypt the
data over air.
Link Rate:
is the speed and optimization method for which modules
will communicate over the RF link.
The possible value is:
*345kbps
Unit Address:
editable on remote and repeater. The Unit Address
identifies an individual unit in the radio network.
Unit Address 1 is reserved for the Master unit.
The Unit Address uniquely identifies each Remote and Repeater from one
another. Each unit in a multipoint system must have a unique Unit Address
ranging from 2 to 65534. Do not use a Unit Address more than once within
the same Network. This is required because the Master must be able to
acknowledge each unit individually, based on the Unit Address.
RF Output Power:
The Output Power Level determines at what power
the IP920 transmits. The IP920’s sensitive receiver can operate with very
low power levels, so it is recommended that the lowest power necessary is
used; using excessive power contributes to unnecessary “RF pollution”.
The allowable settings are from 100 mW to 1000 mW.
Ideally, you should test the communications performance between units
starting from a low power level and working upward until the RSSI is
sufficiently high and a reliable link is established. The conditions will vary
widely between applications, the output power settings can be calculated
based on following information.
•
Transmitter antenna gain
•
Cable loss
•
Effective radiated power (ERP) requirement by FCC Regulations
Power Setting = 36 – Antenna Gain – Cable Loss
The power setting must be no more than the above calculation value.
Any
higher is a violation of FCC rules. See IMPORTANT warning to follow.