RX1M-XXX-10 RADIOMETRIX [Radiometrix Ltd], RX1M-XXX-10 Datasheet - Page 10

• Manufacturer Part Number: RX1M-XXX-10
• Description: VHF Narrow Band FM multi channel radio Transmitter & Receiver
• Manufacturer: RADIOMETRIX [Radiometrix Ltd]

Transmitter variant
RX1M in 135-175MHz is designed to be pin and polarity compatible with existing industry standard
modules. AF and Data Output are inverted relative to original transmitted signal. However, RX1M in
60-65MHz band does not invert the baseband sense.
The transmitter in 135-175MHz is available in two variants – TX1I and TX1M
The non-inverting transmitter called TX1M frequency modulates the carrier frequency in the normal
sense whereby higher modulating voltage increases the carrier frequency and lower modulating voltage
decreases the carrier frequency which results in an inverted AF and Data output on the receiver. This
will be the standard module and exact plug-in replacement for existing industry standard modules.
The inverting transmitter called TX1I reverses the Frequency Modulating order whereby the higher
modulating voltage decreases the carrier frequency and lower modulating voltage increases carrier
frequency which results in non-inverting AF and Data output on the receiver. This variant can be used
for applications where data inversion will be problematic.
Ordering information
Part Number
TX1M-xxx-5
RX1M-xxx-5
TX1M-xxx-5
TX1I-xxx-5
RX1M-xxx-5
TX1M-xxx-10
TX1I-xxx-10
RX1M-xxx-10
Radiometrix Ltd
Figure 8: Data polarity change from TX1M (non-inverting) transmitter to RX1M receiver
Figure 9: Data polarity change from TX1I (inverting) transmitter to RX1M receiver
Description
TX1M transmitter
RX1M receiver
TX1M (non-inverting) transmitter
TX1I (inverting) transmitter
RX1M receiver
TX1M (non-inverting) transmitter
TX1I (inverting) transmitter
RX1M receiver
TX1M
TX1I
3V
0V
modulation
modulation
TX1M/RX1M Data Sheet
No
No
Frequency band
Where xxx is any 1MHz
band from 60-65MHz
Where xxx is any 3MHz
band from 135-175MHz
for
2MHz band from 130-
180MHz for RX1M
0V
3V
TX1M
RX1M
and
RX1M
Data slicer
Data slicer
any
Maximum data rate
5kbps
5kbps
5kbps
5kbps
5kbps
10kbps
10kbps
10kbps
AF
AF
RXD
RXD
Vcc
Vcc
page 10