Data Sheet

Hartcran House, 231 Kenton Lane, Harrow, Middlesex, HA3 8RP, England
Tel: +44 (0) 20 8909 9595, Fax: +44 (0) 20 8909 2233, www.radiometrix.com
FPX3
Issue 3, 7 October 2013
400mW Multichannel 869MHz band transceiver
FPX3 is a small, high power (half-watt) multichannel wide band FM transceiver, operating
in the Europe-wide 869.40 - 869.65MHz subband. It is also available in the Indian licence
free 865-867MHz band (General telemetry and
RFID).
Figure 1: FPX3-869-20
Features









Conforms to ETSI EN 300 220-3 and EN 301 489-3
Conforms to Indian low power requirements for 865 - 867 MHz band
High performance PLL synthesizer
+26dBm RF power output
Data rates up to 20 kbps for standard module
Usable range over 3km
Fully screened. Low profile
Feature-rich interface (RSSI, analogue and digital baseband)
Re-programmable via RS232 interface
Applications






Asset tracking systems
Industrial telemetry and telecommand
High performance security system
Fire alarms
ROV control applications
High speed data modems
Technical Summary
Operating frequency: 868 – 870MHz (EU), 865 - 867MHz (India)
Maximum of 8 channels (depends on band allocation and data rate)
Transmit power: 400mW (+26dBm) nominal
Supply range: +5V regulated
Current consumption: 500mA (at 400mW output) transmit, 50mA receive
Data bit rate: 20kbps max. (standard module)
Receiver sensitivity: -115dBm for 12dB SINAD (20kbps variant)
-117dBm for 12dB SINAD (10kbps variant)
 Size: 67 x 30 x 12mm







Evaluation Platform: Narrow Band Evaluation Kit
Radiometrix Ltd
page 1
FPX3 Data Sheet
Figure 2: FPX3 block diagram
Radiometrix Ltd
page 2
FPX3 Data Sheet
Figure 3: FPX3 footprint (Top) view
Pin Description
Pins
RF
1A
2A
3A
Normal mode
NO PIN
RF in/out
RF Gnd
To the antenna
RF ground
4A
5A
6A
User
1
2
GND
GND
Vcc (TX)
0V
0V
+5V regulated supply for TX 7
TXD
TXE
3
4
5
6
7
8
9
10
11
GND
Vcc
P3
P2
P1
PGM in
RSSI
RXD
AF out
DC coupled input for 5v pp CMOS logic waveforms
Transmit enable.
Low = TX mode
0V
DC supply input (+5V regulated) 8
Parallel channel select
Parallel channel select
Parallel channel select
Serial programming/control input (inverted logic level RS232)
DC level between 0.5V and 2.5V. 60dB dynamic range
Open collector output of data slicer. 47K pullup to 4V
500mV p-p audio. DC coupled, approx 0.8V bias
NOTES:
1. No inversion occurs between TXD and RXD.
2. P1 - P3 (parallel channel selects) and N_TXE are active LOW and have internal 47K pullups to 4v
3. RXD is an open collector output, with a weak pullup to 4v (approx 50K)
4. This radio has no 'internal modem' functions in this version.
5. Programming port (P0) operates at 2400 baud. (Command set specific to this design). The unit is
capable of operating in 'basic' parallel channel select only mode, or in serial controlled 'expanded'
mode
6. The high current (500mA maximum) transmitter supply (5v regulated) is fed to a separate pin, on the
RF out connector.
The V supply (pin 4 on the user connector) also requires a 5v regulated supply, and draws up to
50mA
Both pins must be supplied at all times (most users connect them to a common +5v supply)
7. 10% duty cycle: While the FPX3 is capable of transmitting continuously (the case temperature will
rise noticeably) this will be in contravention of the sub-band restrictions.
Units operating in the high power 869.4-869.65MHz sub-band are limited to 10% maximum transmit
duty cycle. It is the responsibility of the user to ensure that this restriction is complied with.
Alternatively, the user may wish to implement a listen-before-talk protocol (using the RSSI output).
See EN300-220 for further details
Radiometrix Ltd
page 3
FPX3 Data Sheet
Serial interface commands
Serial data is sent to the unit on the programming input (PGM).
To successfully program the unit, it must be powered
Unlike earlier Radiometrix multichannel units, the FPX3 has separate N and R registers for each channel, on
transmit and on receive. In other words, the frequency of each channel is individually programmed in every
mode.
Commands include:
Commands
GOCHAN a
SETPAR
SETSER
<cr>
/
#
Function
serial select of channel a (ch0 to 7)
channel selected by 3 bit parallel input
channel selected by most recent 'gochan' operation
process entry
clear all buffers
disable command mode
Most users will not need to edit the table which relates channel frequency, channel number and synthesizer
register programming values. The commands below are used to access the eeprom table containing this
information.
Users should be warned that, in order to get the optimum switching speed from the module, the standard
channel setup uses a different reference frequency for each channel, and the absolute calculated channel
frequency is allowed to deviate by up to +/-2KHz from the nominal
LOADaa nnnnn (aa = 0 – 7)
LOADaa rrrrr (aa = 8 – 15)
LOADaa nnnnn (aa = 16 – 23)
LOADaa rrrrr (aa = 24 – 31)
load the N values for receive operation
load the R values for receive operation
load the N values for transmit operation
load the R values for transmit operation
Reference frequency (10MHz/R) must be in the range 210 to 300KHz (tx) or 175 to 300KHz (rx).
As a rule of thumb, an R value greater than 45 (tx) or 55 (rx) should be viewed with suspicion.
a = single digit channel number from 0 to 7
aa = eprom location number from 0 to 31
nnnnn = a synthesizer N register value, (up to 65535)
rrrrr = the synthesizer R register value, (up to 16383)
ALL COMMANDS MUST BE IN UPPER CASE.
Notice that the synthesizer and VCO operate at half the output frequency, so for a frequency of 869.475MHz,
the actual N/R values will be set for 434.7375MHz
Further information TBA
NOTE:
 A pause of at least 50ms must be allowed between command strings (EEPROM programming time)
Radiometrix Ltd
page 4
FPX3 Data Sheet
Condensed specifications (All details are provisional)
Frequency
Frequency stability
Channel spacing
Number of channels
Supply
Receive
Transmit:
Operating temperature
Spurious radiations
868 – 870MHz (EU)
865 - 867MHz (India)
+/-5ppm (better than 5kHz)
100kHz (FPX3-86x-20)
50kHz (FPX3-86x-10)
8 maximum
FPX3-869-20 for EU
CH0: 869.475MHz, CH1-CH3: 869.565MHz
CH4-CH7=869.50MHz for backward compatibility
FPX3-869-10 for EU
CH0:869.450MHz, CH1:869.500MHz, CH2:869.550MHz,
CH3:869.600MHz, CH4-CH7=869.50MHz for backward compatibility
FPX3-866-10 or FPX3-866-20 for India
CH0 = 865.143 MHz
CH1 = 865.294 MHz
CH2 = 865.500 MHz
CH3 = 865.789 MHz
CH4 = 866.047 MHz
CH5 = 866.383 MHz
CH6 = 866.531 MHz
CH7 = 866.829 MHz
5.0V regulated at 50mA
5.0V regulated at 500mA for 400mW output
-20 to +70 οC (Storage -30 to +70 οC)
Compliant with ETSI EN 300 220-2 and EN 301 489-3 (EU)
Interface
User
RF and TX supply
Recommended PCB hole size
Size
Transmitter
Output power
TX on switching time
Modulation type
TX modulation bandwidth
Peak FM Deviation
Adjacent channel TX power
TX spurii
Inputs
Receiver
Sensitivity
image / spurious
blocking
adjacent channel
Outputs
11 pin 0.1" pitch molex
5 pin 0.1" pitch molex
1.2mm (min.)
67 x 30 x 12mm
400mW (+26dBm)
5 ms
FM, FSK (F1D, F3D)
DC – 10kHz
16kHz nominal (FPX3-xxx-20)
8kHz nominal (FPX3-xxx-10)
-37dBm
<-36dBm
5V pk-pk CMOS data
-117dBm for 12dB SINAD at 1KHz (FPX3-xxx-10)
-115dBm for 12dB SINAD at 1KHz (FPX3-xxx-20)
-107dBm for <0.1% data errors (20kbps NRZ)
-55dB
-80dB
-60dB (Tested per. ETSI 300-220-2)
RSSI, Audio, Data
Ordering Information
Part No.
FPX3-869-10
FPX3-869-20
FPX3-866-10-IND
FPX3-866-20-IND
Radiometrix Ltd
Description
10kbps, 4-channel EU version
20kbps, 2-cannnel EU version
10kbps, 8-channel Indian version
20kbps, 8-channel Indian version
page 5
Frequency band (MHz)
869.40 – 869.65 MHz
869.40 – 869.65 MHz
865 – 867 MHz
865 – 867 MHz
FPX3 Data Sheet
page 6
10
100
500
868.0
[mW]
600kHz
868.60
100kHz
868.70
10mW
500kHz
25mW
<0.1% or LBT
<1%
<1% or LBT
Duty Cycle
25mW
No Spacing
25kHz or
WB
No Spacing
Non-specific SRD
Channel Spacing
Applications
Alarm
RF POWER [ERP]
Radiometrix Ltd
Non-specific SRD
<1%
<0.1%
869.20
869.25
No Spacing
25kHz
25kHz
or Wide Band
250kHz
500mW
869.65
869.70
50kHz
25mW
<10% or LBT <10%
869.30 869.40
50kHz 50kHz 100kHz
10mW 10mW 10mW
25kHz
300kHz
5mW
870.0
up to 100%
Non-specific
SRD
Alarm
Non-specific SRD
25kHz
Social Alarm
Alarm
CEPT/ERC Rec 70-03, 868 MHz Band Plan
[MHz]
Appendix
FPX3 Data Sheet
Radiometrix Ltd
Hartcran House
231 Kenton Lane
Harrow, Middlesex
HA3 8RP
ENGLAND
Tel: +44 (0) 20 8909 9595
Fax: +44 (0) 20 8909 2233
sales@radiometrix.com
www.radiometrix.com
Copyright notice
This product data sheet is the original work and copyrighted property of Radiometrix Ltd. Reproduction in
whole or in part must give clear acknowledgement to the copyright owner.
Limitation of liability
The information furnished by Radiometrix Ltd is believed to be accurate and reliable. Radiometrix Ltd
reserves the right to make changes or improvements in the design, specification or manufacture of its
subassembly products without notice. 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. This data sheet neither states nor
implies warranty of any kind, including fitness for any particular application. These radio devices may be
subject to radio interference and may not function as intended if interference is present. We do NOT
recommend their use for life critical applications.
The Intrastat commodity code for all our modules is: 8542 6000
R&TTE Directive
After 7 April 2001 the manufacturer can only place finished product on the market under the provisions of
the R&TTE Directive. Equipment within the scope of the R&TTE Directive may demonstrate compliance
to the essential requirements specified in Article 3 of the Directive, as appropriate to the particular
equipment.
Further details are available on The Office of Communications (Ofcom) web site:
http://www.ofcom.org.uk/
Information Requests
Ofcom
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London SE1 9HA
Tel: +44 (0)300 123 3333 or 020 7981 3040
Fax: +44 (0)20 7981 3333
information.requests@ofcom.org.uk
European Communications Office (ECO)
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DK 1366 Copenhagen
Tel. +45 33896300
Fax +45 33896330
ero@ero.dk
www.ero.dk