RX2A-433-10 RADIOMETRIX, RX2A-433-10 Datasheet

RECEIVER, 433.92MHZ

RX2A-433-10

Manufacturer Part Number
RX2A-433-10
Description
RECEIVER, 433.92MHZ
Manufacturer
RADIOMETRIX
Datasheet
The
mounting code-hopping UHF radio
transmitter suitable for use in secure
remote keyless control applications
at distances up to 75 metres in-
building or 300 metres open ground.
Features
Features
Features
Features
The module combines full screening with extensive internal filtering for EMC - minimising spurious
radiations and susceptibilities. The KTX2 module will suit wireless control links in applications including
car and building security and secure unidirectional remote process control. Because of the small size and
low power requirement the module is ideal for use in portable, battery-powered devices such as hand-held
remote controls requiring data integrity and high security.
Technical Summary
Radiometrix Ltd, KTX2 Data Sheet
Issue 1, 05 March 2008
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KTX2
Designed for compliance with EN 300 220-3 and EN 301 489-3
Each transmitter module is pre-programmed and unique
No additional circuitry required to use the module
32-bit encryption – more than 4 billion combinations
Usable range up to 300m
Available at 433.92MHz
Fully screened module
Suitable for use with a Radiometrix KRX receiver-decoder
Crystal-locked PLL
FM data with Manchester encoding
Operation from 3V to 6V
+3dBm output on 433.92MHz
<1uA standby, 8mA Tx current
Supply status included in transmission
UHF FM Code-Hopping Data Transmitter Module
is
a
miniature
Radiometrix
Hartcran House, 231 Kenton Lane, Harrow, HA3 8RP, England
Tel: +44 (0) 20 8909 9595, Fax: +44 (0) 20 8909 2233
PCB
Figure 1: KTX2-433
KTX2
page 1

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RX2A-433-10 Summary of contents

Page 1

... Fully screened module ! Suitable for use with a Radiometrix KRX receiver-decoder The module combines full screening with extensive internal filtering for EMC - minimising spurious radiations and susceptibilities. The KTX2 module will suit wireless control links in applications including car and building security and secure unidirectional remote process control. Because of the small size and low power requirement the module is ideal for use in portable, battery-powered devices such as hand-held remote controls requiring data integrity and high security ...

Page 2

... Input (3) – activate high (>0.55Vcc – Vcc) to cause a transmission. Internal Use (pin 9) Modulation (Data). This pin is connected to the modulation input of the Transmitter, therefore do not connect anything to this pin during operation of the module. Radiometrix Ltd, KTX2 Data Sheet Loop Filter Fig. 2: KTX2 block diagram 15 ...

Page 3

... If the Radiometrix KRX decoder loses synchronisation with the transmitter (e.g. repeated transmitter activation whilst out of range) then the KTX module must be activated twice before the decoder will allow the control to be processed, but only if the KTX module is within a forward window of +32768 activations. This mechanism prevents “ ...

Page 4

... FM deviation (+/-) Notes: 1. Measured into a 50 load. 2. –20 to +70°C @ Vcc = 5V 3. Operational at 2.8V but with reduced deviation (typ. +/-15kHz) Radiometrix Ltd, KTX2 Data Sheet - + +100 C -0.3V to +6.9V Vcc +/-0.3V 50V DC 10dBm RF pin min. typ. ...

Page 5

... It is desirable (but not essential) to fill all unused PCB area around the module with ground plane. Warning: DO NOT wash the module not hermetically sealed. recommended horizotal mounting method Radiometrix Ltd, KTX2 Data Sheet optional solder joint for extra mechanical strength ...

Page 6

... Easy of design set-up Size Immunity proximity effects Range open ground to similar antenna (for KTX2-433 & RX2A-433-10) A) Helical Wire coil, connected directly to pin 2, open circuit at other end. This efficient given it's small size (20mm x 4mm dia.). The helical is a high Q antenna, trim the wire length or expand the coil for optimum results ...

Page 7

... For all other variants please contact Sales department. To make a complete code-hopping system: Suitable Receiver module to use with KTX2: RX2A-433-10 Suitable Decoder IC for use with RX2A: KRX416-000-DIL Or use a complete relay output board (includes RX2A module) for use with KTX2 modules (mapping the four KTX2 function lines to four change-over relays) ...

Page 8

... Radiometrix Ltd does not assume any liability arising from the application or use of any product or circuit described herein, nor for any infringements of patents or other rights of third parties which may result from the use of its products ...

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