Condensed specifications
Frequency
458.5-459.1MHz or 433-434MHz (any 3MHz band from 400-475MHz)
+/- 1.5kHz
25kHz (12.5kHz by special order)
Frequency stability
Channel spacing
Number of channels
128 channels controlled via RS232 interface (8 parallel selected)
Supply
voltage
Current
4.5 - 16V
130mA nominal transmit
50mA receive
Operating temperature
Size
-20 to +70 οC (Storage -30 to +70 οC)
59 x 38 x 10 mm
Spurious radiations
Interface
Compliant with ETSI EN 300 220-3 and EN 301 489-3
user
Power
RF
13pin 0.1" pitch molex
2pin 0.1" pitch molex
3pin 0.1" pitch molex
1.2mm (min.)
Recommended PCB hole size
Intended approval
ETSI Radio standard EN 300 220-3 and EMC standard EN 301 489-3
Transmitter
Output power
+20dBm (100mW) ±1dB (factory adjustable 1-100mW)
< 15 ms
FM, FSK (F1D, F3D)
DC – 3kHz
<-37dBm (<200nW)
TX on switching time
Modulation type
TX modulation bandwidth
Adjacent channel TX power
TX spurii
better than -40dBm
Inputs
analogue, data (CMOS/TTL compatible)
Receiver
Sensitivity
-118dBm for 12 dB SINAD (-115dBm for 12 dB SINAD for 12k5 variant)
adjacent channel
-910kHz spurios
½ IF
65dB
69dB
>80dB
image / spurious
blocking
>80dB
86dB or better
Outputs
Power on to valid audio
Power on to valid audio
Power on to stable data out
(50:50 mark / space)
RSSI, carrier detect, audio, data
28ms (no noise mute)
45ms (with noise mute)
50ms (with or without mute)
Switching time (TX→ RX and
RX→ TX)
Under 15ms (no noise mute)
Notes: 1. The data slicer cannot be depended upon for data waveform frequencies below 250Hz
2. When RX is on and a transmitter keys up, again a 50ms period is required to stabilise data output
mark/space. i.e. allow at least 50ms of preamble
Ordering information
Part No.
VX2M-433-5
VX2I -433-5
Description
VX2M transceiver (non inverted RXD output) 433.05MHz - 434.790MHz
VX2I transceiver (inverted RXD output) 433.05MHz - 434.790MHz
Frequency band
Data rate (max)
5kbps
5kbps
VX2M-458-5
VX2I-458-5
VX2M transceiver (non inverted RXD output) 458.525MHz - 459.100MHz
VX2I transceiver (inverted RXD output)
5kbps
5kbps
VX2M-458-10
VX2I-458-10
VX2M transceiver (non inverted RXD output) 458.525MHz - 459.100MHz
10kbps
10kbps
VX2I transceiver (inverted RXD output)
458.525MHz - 459.100MHz
Radiometrix Ltd
VX2M Data Sheet
page 8
RADIOMETRIX [ RADIOMETRIX LTD ]
