GT2HP-869.6125 Transmitter Module
General Description
The GT2HP-869.6125 module is the smallest narrow band high power module available
on the market today for use in the 869 MHz band plan.
Measuring just 31 x 19 x 4mm the module generates 300mW and conforms to EN 300 220 for narrow band operation.
The common Genesis footprint of the GT2HP means that the module can be used to provide more range and
more reliability in existing applications as well as new developments.
In conjunction with the GR2/GR2C1 receivers, a wireless link operating over many kilometres can be reliably established.
In addition a unique feature of the module is its watermark capability which offers a complete over air protocol that removes the need for any encoding from the host.
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- UHF Narrow Band FM Transmitter for portable applications and incorporating watermark technology
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Compatible Receiver Modules
- GR2-869.6125
- GR2C1-869.2125 (Highly robust class1 receiver)
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Applications
- Wireless security
- Long range remote switching
- Long range telemetry
- Social alarms
- Remote Control
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Features
- MINIATURE SIL PACKAGE
- 300mW RF OUTPUT POWER
- DATA RATES UP TO 9600 BITS/S
- NARROW BAND CRYSTAL TECHNOLOGY
- WATERMARK CAPABILITY
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- CAN BE SUPPLIED ON OTHERFREQUENCIES
- 25KHz CHANNEL SPACING
- SINGLE 3 TO 3.7 VOLT SUPPLY
- EN 300-220 COMPLIANT
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GT2HP-300mW Transmitter
Absolute Maximum Ratings: Transmitter
| Operating temperature: |
-10C to +55C |
| Storage temperature: |
-40C to +100C |
| Supply Voltage (pin 3) |
3.7V |
| Data input (pin 5) |
3.7V |
Electrical Characteristics (869.6125 MHz version):
Parameters measured at 250C
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pin
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min.
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Typ.
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max.
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units
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notes
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| DC LEVELS |
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Supply voltage
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3
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3.0
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3.3
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3.7
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Volts
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Current & RF POWER
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Supply current
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3
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260
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mA
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RF output power
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2
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300
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mW
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1
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RF & Data
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2nd harmonic
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-40
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dBm
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2
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Harmonics @ > 1GHz
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-50
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dBm
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2
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Initial frequency accuracy
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25
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Hz
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Frequency accuracy over full temp range
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1.8
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KHz
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FM deviation of RF carrier
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3
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KHz
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Power up time to full RF
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5
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6
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ms
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3
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Data rate
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9.6
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kbits/s
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4
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Data pulse width
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100
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ms
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Note 1: Measured into a 50W impedance over
production spread and Vcc = 5volts.
2:
The limit for the European spec EN 300 220 is 36dBm.
3:
Using enable pin on module..
4:
All modules are 25KHz channel spacing in which case the data rate can be up to
9.6 kbps.
Connection
Details
Figure 1: Transmitter Pin Functionality
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Pin Description:
RF GND (pin 8 & PIN 6)
RF ground pin, internally connected to pin 4 (0V). This pin should
ideally be connected to the nearest ground plane (e.g. coax braid, main PCB
ground plane etc.)
RF OUT (pin7)
50W RF antenna output. To achieve best results the
antenna impedance must match that of the module.
Programming Input (pin5)
This pin is not to be connected to anything on the host circuit.
Transmitter Enable (pin4)
A logic low will switch on the transmitter RF output and a logic high
will disable the RF output. In this mode with supply voltage permanently
connected to pin6, the module will consume less than 1uA.
VCC (pin 3)
+Ve supply pin.
GND (pin 2)
Power supply ground connection,
Data IN (pin 1)
This input has an
impedance of 47KW and should ideally
be driven by a CMOS logic drive or compatible.
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Application Information
Antenna Design
The design and positioning of
the antenna is as crucial as the module performance itself in achieving a
good wireless system range. The following will assist the designer in
maximising system performance.
The antenna should be kept
as far away from sources of electrical interference as physically
possible. If necessary, additional power line decoupling capacitors
should be placed close to the module.
The antenna hot end
should be kept clear of any objects, especially any metal as this can
severely restrict the efficiency of the antenna to transmit power. Any
earth planes restricting the radiation path from the antenna will also have
the same effect.
Best range is achieved with either a straight piece of
wire, rod or PCB track @ wavelength (8cm @ 869 MHz). Further range may
be achieved if the wave antenna is placed perpendicular in the middle of a
solid earth plane measuring 15cm radius. In this case, the antenna
should be connected to the module via some 50 ohm characteristic impedance
coax
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Figure 2: Antenna
Configurations To Be Used With The Genesis Transmitter Modules
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Ordering
Information
Standard Product;
Part No
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GT2HP-869.6125
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GT2HP-869.6125WM (incorporating watermark)
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Please consult our sales department for further information or other frequencies.
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Address
- M.K.Consultants (UK) Ltd
- 288a-290 Queens Road
- HALIFAX, West Yorkshire
- HX1 4NS
- England
Contact Details
- Tel +44 (0) 1422 329002
- Fax +44 (0) 1422 353153
- Email: sales@mkconsultants.eu
- Web: www.mkconsultants.eu
Disclaimer
MKConsultants have a policy to continually improve the reliability and
performance of their products. We therefore reserve the right to upgrade our
products performance without notice.
Although the data contained herewidth is believed to be accurate, however
we do not assume any responsibility whatsoever for errors or omissions this
document may contain.
In addition, we do not imply warranty or fitness for any particular
application especially life support applications.