Cansec AIR-485, Руководство по установке

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AIR -485 ® Page 4 of 14
Installation Manual
November 2014 • Rev. 2.2
Overview :
Air -485
®
is a high performance 900MHz frequency-hopping spread spectrum (FHSS) long-range
wireless modem. It provides a reliable wireless data link to RS-485 serial devices and offers a
simple yet cost-effective alternative to running costly RS-485 data cables, especially in
commercial environments that make wire connections challenging or impractical.
Air -485
®
is
optimized to work with Cansec’s SmartLock, Hurricane & Maestro, and Zodiac
products but can also be used with most products that support 2-wire RS-485 communication.
The wireless link that
Air -485
®
modems provide is totally transparent to the connected devices.
Features
Plug and Play Communications
Unlike most wireless modems, Air -485
®
does not require the use of a PC or the installation of
complicated software to set up the radio and communication parameters. Instead, Air -485
®
modems are configured through simple DIP switch settings (see Figure 1 and 2 on the following
pages).
Long Range
Indoor/Urban: up to 400 m (1,300 feet) depending on antenna height and RF interference.
Outdoor line-of-sight: up to 10 Km (6 miles) with standard antenna provided.
USB and RS-485 Support
Air -485
®
modems support both USB and 2-wire RS-485 connections. When connected to the
PC using USB, the device is powered from the USB. When connected to an RS-485 data cable,
an external power supply must be used.
Air -485
®
automatically detects the type of connection
and configures itself automatically. Support for both types of connections provides greater
flexibility in accommodating even the most complex configuration (examples provided later in
this document.)
Adjustable RF Power Level
Four output power levels (10, 250, 500 and 1000 milliwatts) can be easily set in the field using
two DIP switches. The RF power level should be set higher as needed for longer range. Note
that setting the RF power to a high level when doing testing at very short range (under 2 m/6
feet) can overload the receiver and cause erratic operation.