Type Approval requirements: Europe
The modules comply with the requirements of the R&TTE Directive (including standards EN 300 220-3 and EN 301
489-3) when used in accordance with the information contained herein. The following provisos apply:
1) The modules must not be modified or used outside their specification limits.
2) The modules may only be used to transfer digital or digitised data. Analogue speech and/or music are not
permitted.
3) The equipment in which the TX3H is used must carry all necessary external labelling to meet the requirements
of the R&TTE directive.
4) The TX3H has not been tested with antennas having gains greater than that of a quarter-wave whip. The use of
such antennas may require further R&TTE approval.
Module mounting considerations
Good RF layout practice should be observed. In particular, any ground return required by the antenna or feed should be
connected directly to the RF GND pins at the antenna end of the module, and not to the 0V pins which are intended as
DC grounds only. All connecting tracks should be kept as short as possible to avoid any problems with stray RF pickup.
If the connection between module and antenna does not form part of the antenna itself, it should be made using 50Ω
microstrip line or coax or a combination of both. It is desirable (but not essential) to fill all unused PCB area around the
module with ground plane.
Ordering information
For European applications in the 868 - 870MHz band:
Transmitter:
TX3H-869.50-10
Matching RX3A receiver:
RX3A-869.50-10
(Refer to TX3A/RX3A data sheet for technical details: http://www.radiometrix.com/pdf/tx3arx3a.pdf)
Radiometrix Ltd, TX3H Data Sheet
page 6
RADIOMETRIX [ RADIOMETRIX LTD ]
