rx2m-458-5tx2i-458-5 Radiometrix Ltd, rx2m-458-5tx2i-458-5 Datasheet - Page 4

• Manufacturer Part Number: rx2m-458-5tx2i-458-5
• Description: Uhf Narrow Band Fm Multi Channel Radio Modules
• Manufacturer: Radiometrix Ltd

Pin Description - TX2M
Pin Description - RX2M
Pin: A
1
2
Pin: B
1
2
3
Pin: C
1
2
3
4
5
6
7
8
9
10
Pin C
1
2
3
4
5
6
7
8
9
10
NOTES:
Radiometrix Ltd
Pin A
1
2
Pin B
1
2
3
1. Internal AF Input gain is factory set for 1V
2. Carrier detect on RX2M mutes the AF and DATA outputs when RF input signal is <-123dBm.
3. There are no pullups on the open collector outputs. External pull-up resistor should be used.
4. With 1200baud modem mode enabled, parallel selection of channel is unavailable as the P1-P3 lines
distortion. Analogue gain may be set for an input level of 50mV – 2V
without appropriate test equipment. Contact factory for details
This can be factory disabled if required.
are used for input/output operations.
Name
RSSI
SQF
AF out
RXD
+4.4V out
0V
PGM
P1 (MOD NC)
P2 (MOD RXD)
P3 (MOD CDE)
Name
+Vin
Gnd
Name
Gnd
RF out
Gnd
Name
+Vin
Gnd
Name
Gnd
RF out
Gnd
Name
0V
TXE
TXD
AF in
+4.4Vout
PGM
0V
P1 (MOD TXD)
P2 (MOD NC)
P3 (MOD TXH)
Function
+4.5-16V
Ground
Function
+4.5-16V
Ground
Function
RF ground
To the antenna
RF ground
Function
RF ground
To the antenna
RF ground
Function
Ground
DC coupled input for 3-12V CMOS logic. Leave open if unused
AC coupled Analogue Input. Limit to 1V
<1.5% and peak FM deviation >2.5kHz
DC supply. 75mA maximum drain. Only present when TXE is low
Ground
Parallel frequency select inputs. Inverted logic, 10k pullups to 4V
Function
DC level between 0.5V and 2.5V. 60dB dynamic range
Noise operated carrier detect. Open collector. ON/low = no signal
200mV
Open collector output of data slicer. Need external pull-up
DC supply. 75mA maximum drain. Present if unit is powered.
Ground
Serial programming/configuration input at RS232 level
Parallel frequency select inputs. Inverted logic, 10k pullups to 4V
Transmitter enable. Low = ON, open = off. 4k7 internal pullup to Vcc
Serial programming/configuration input at RS232 level
pk-pk
audio. DC coupled, approx 1V bias. Muted by squelch
TX2M/RX2M Data Sheet
pk-pk
Figure 3: TX2M Footprint (Top) view
Figure 4: RX2M Footprint (Top) view
to produce 3kHz peak deviation and minimum
pk-pk
10% to keep distortion
pk-pk
. This cannot be done
page 4