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Multi-channel transmitter. LMT3 Datasheet

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Multi-channel transmitter. LMT3 Datasheet






LMT3 transmitter. Datasheet pdf. Equivalent




LMT3 transmitter. Datasheet pdf. Equivalent





Part

LMT3

Description

NBFM Multi-channel transmitter



Feature


Hartcran House, 231 Kenton Lane, Harrow, Middlesex, HA3 8RP, England Tel: +44 ( 0) 20 8909 9595, Fax: +44 (0) 20 8909 2 233, www.radiometrix.com LMT3 Issue 1 , 22 January 2013 NBFM Multi-channel t ransmitter for 868MHz SRD band The LMT 3 is a 25kHz channel narrowband multich annel transmitter offering up to 25mW R F power. LMT3 can be paired with the Ca tegory 1 compliant.
Manufacture

Radiometrix

Datasheet
Download LMT3 Datasheet


Radiometrix LMT3

LMT3; receiver intended for European 869.2869 .25MHz Social Alarm application. It can also be used for any 868 - 870MHz band Non-Specific SRD applications. The mod ule offers a low power, reliable data l ink in an industry-standard pin out and footprint. Figure 1: LMT3 transmitter Features Conforms to EN 300 220-3 and EN 301 489-3 PLL synthesizer with TCXO Data rates up to .


Radiometrix LMT3

5 kbps for standard module Usable range over 500m @ 25mW Fully screened, Low pr ofile Low power requirements Applicatio ns Social Alarm Handheld terminals EPOS equipment, barcode scanners Data logge rs Industrial telemetry and telecommand In-building environmental monitoring a nd control High-end security and fire a larms DGPS systems Vehicle data up/down load Heavy vehicle.


Radiometrix LMT3

/machinery controls Technical Summary So cial Alarm frequencies: CH0: 869.2125MH z, CH1: 869.2375MHz Custom frequency wi thin 865MHz - 870MHz 32 channels Transm it power: +10dBm (10mW) / +14dBm (25mW) Supply range: 3.1 – 15V (TX @ 10mW), 4.1 – 15V (TX @ 25mW) Current consum ption: 34mA @ 10mW, 68mA @ 25mW Data bi t rate: 5kbps max. (standard module) Se rial configuration by .

Part

LMT3

Description

NBFM Multi-channel transmitter



Feature


Hartcran House, 231 Kenton Lane, Harrow, Middlesex, HA3 8RP, England Tel: +44 ( 0) 20 8909 9595, Fax: +44 (0) 20 8909 2 233, www.radiometrix.com LMT3 Issue 1 , 22 January 2013 NBFM Multi-channel t ransmitter for 868MHz SRD band The LMT 3 is a 25kHz channel narrowband multich annel transmitter offering up to 25mW R F power. LMT3 can be paired with the Ca tegory 1 compliant.
Manufacture

Radiometrix

Datasheet
Download LMT3 Datasheet




 LMT3
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
LMT3
Issue 1, 22 January 2013
NBFM Multi-channel transmitter for 868MHz SRD band
The LMT3 is a 25kHz channel narrowband
multichannel transmitter offering up to 25mW RF
power. LMT3 can be paired with the Category 1
compliant receiver intended for European 869.2-
869.25MHz Social Alarm application. It can also be
used for any 868 - 870MHz band Non-Specific SRD
applications. The module offers a low power,
reliable data link in an industry-standard pin out and
footprint.
Figure 1: LMT3 transmitter
Features
Conforms to EN 300 220-3 and EN 301 489-3
PLL synthesizer with TCXO
Data rates up to 5 kbps for standard module
Usable range over 500m @ 25mW
Fully screened, Low profile
Low power requirements
Applications
Social Alarm
Handheld terminals
EPOS equipment, barcode scanners
Data loggers
Industrial telemetry and telecommand
In-building environmental monitoring and control
High-end security and fire alarms
DGPS systems
Vehicle data up/download
Heavy vehicle/machinery controls
Technical Summary
Social Alarm frequencies: CH0: 869.2125MHz, CH1: 869.2375MHz
Custom frequency within 865MHz - 870MHz
32 channels
Transmit power: +10dBm (10mW) / +14dBm (25mW)
Supply range: 3.1 – 15V (TX @ 10mW), 4.1 – 15V (TX @ 25mW)
Current consumption: 34mA @ 10mW, 68mA @ 25mW
Data bit rate: 5kbps max. (standard module)
Serial configuration by inverted RS232 at 3V CMOS level
Evaluation platforms: NBEK + LM Series carrier
Matching receiver: COR3-869-5
Radiometrix Ltd
LMT3 Data Sheet
page 1




 LMT3
Radiometrix Ltd
LMT3 Data Sheet
page 2




 LMT3
Figure 3: LMT3 footprint (top view)
Pin description – LMT3
Pin Name
1a Vcc
2a 0V
3a TXE
4a TXD
5a No pin
Function
3.1 – 15V power supply (@ 10mW)
4.1 – 15V power supply (@ 25mW)
Ground
Transmit Enable (active low)
DC coupled input for 3V CMOS logic. Rin=47k
Not present in LMT3
1b P0/PGM
2b P1
3b P2
4b P3
5b No pin
Parallel Channel select LSB
Serial frequency programming / configuration1
Parallel Channel select
Parallel Channel select
Parallel Channel select MSB
Not present in LMT3
Notes:
1. Serial programming is by an inverted, CMOS logic level, 2400 baud RS232 datastream applied to
the P0 pin.
2. Channel select inputs have pullups (50k) to 3v internal rail. Do not exceed 3V logic levels on this
port.
3. Channel select inputs are active low
4. TXE has a 100kpullup to Vcc
5. All pins are on an 0.1" grid
6. The pins 5a/b are not present, but are included in footprint for compatibility with other units in this
family
7. In the 'off' state a PIN switch open circuits the RF output pin. There are no 'off' state spuri.
8. 10mW unit will operate (with marginally reduced specifications and lower (6-8mW) output power)
from a 3.0V rail. This must be well regulated and without noise or ripple, as in this state the unit's
internal regulator no longer operates, and provides no supply rejection.
Radiometrix Ltd
LMT3 Data Sheet
page 3



Recommended third-party LMT3 Datasheet






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