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TX2I-433-5 Datasheet(PDF) 4 Page - Radiometrix Ltd

Part # TX2I-433-5
Description  UHF Narrow Band FM multi channel radio modules
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Manufacturer  RADIOMETRIX [Radiometrix Ltd]
Direct Link  http://www.radiometrix.com
Logo RADIOMETRIX - Radiometrix Ltd

TX2I-433-5 Datasheet(HTML) 4 Page - Radiometrix Ltd

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


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