DS8200-2 April ’07

©2007 RF Solutions Ltd, www.rfsolutions.co.uk

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Synthesised Radio Modem

X8200

X8200HP

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Operates on international licensed and licence free radio bands

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RF Bands:

o

147MHz to 174MHz VHF

o

400MHz to 500MHz UHF

o

868MHz to 920MHz UHF

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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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17 to 99 selectable radio channels

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Range (500mW):

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10km to 20km line of sight

o

1km to 3km in buildings

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RS232 & RS485 serial Interface

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Baud rates of 1.2K to 115.2K

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Commissioning and diagnostic futures

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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

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.