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X8200 - Radio Modem0 pages
X8200/ X8200HP
SYNTHESISED
RADIO MODEM
DATASHEET 148-1
FEATURES
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Operates on international licensed and licence free radio bands.
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RF Bands:
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Conforms to ETSI 300-220, ETSI 300-113, ETSI 300-683, MPT1329,
MPT1411.
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Distant Modems can be monitored and configured over the radio
link.
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127 or 255 selectable radio channels.
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Range 10km to 20km line of sight and 1km to 3km trough buildings
for ERP of 500mW.
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RS232 & RS485 serial Interface with baud rates of 1.2K to 115.2K.
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Ethernet Interface Option.
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Over air commissioning and diagnostic features.
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Store and Forward Repeater Mode to extend range.
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Addressable individually and globally.
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On-line AT commands.
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Packetised Data, and Forward Error Correction options.
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Low power standby mode.
147MHz to 174MHz VHF
300MHz to 500MHz UHF in 3.175MHz Bands
868MHz to 920MHz UHF in 3.175MHz Bands
DESCRIPTION
The X8200 Radio Modem transmits and receives half duplex serial data at baud rates of 1.2K to 115.2K by
means of a FM Radio Transceiver operating on the UK and European licence exempt bands and most other
world wide data frequencies.
A 4K buffer memory is provided so that data can be passed asynchronously between the host and modem
without the need for handshaking. The CTS output signal can be used for flow control in duplex applications.
The over air data speed can be configured at either 5K bits/sec or 10K bits/sec. This is independent of the
baud rate and should be set to a lower value where possible for the best radio propagation.
The set up menu of the X8200 can be accessed either by a PC running any terminal emulation program like
Hyper Terminal in the accessories section or remotely over the radio link. The set up menu is selected either
by connecting pin 6 on the 9 way D Connector to 0v or typing $ then ESC directly after the power has been
applied. The menu configuration is permanently stored on EEPROM.
On-line “AT” commands can be sent to the modem to change the address configuration, repeater path or RF
frequency during normal operation so that any modem can “dial up” any other modem on the network.
Data can be formed into packets and passed from one modem to another. If the received packet has errors
detected then the data will automatically be sent again. Both size of the data packet and the number of retries can be set in the menu.
The X8200 radio modem is powered from DC source of between 10V or 26VDC. In receive mode it will take
80mA and in transmit 350mA. Taking DTR low will switch the modem into a power saving stand-by mode. In
this state it will consume approximately 0.1mA. It will take approximately 20mSec for the modem to become
fully operational after DTR is taken high or power is applied.
WARWICK WIRELESS LIMITED
Unit 16 Sapcote Road Ind. Est. Hinckley, Leicestershire LE10 2AU England
TEL: +44 (0) 1455 233616 FAX: +44 (0) 1455 233179 WEB: www.radiotelemetry.co.uk
