TXM-900-HP-II Linx Technologies Inc, TXM-900-HP-II Datasheet

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TXM-900-HP-II

Manufacturer Part Number
TXM-900-HP-II
Description
TRANSMITTER RF 900MHZ 8-CHANNEL
Manufacturer
Linx Technologies Inc
Series
HP2r
Datasheet

Specifications of TXM-900-HP-II

Frequency
902MHz ~ 928MHz
Applications
ISM, RKE, Security and Fire Alarms
Modulation Or Protocol
FM, FSK
Data Rate - Maximum
50 kbps
Power - Output
-3dBm ~ 4dBm
Data Interface
PCB, Through Hole
Antenna Connector
Through Hole
Voltage - Supply
2.17 V ~ 16 V
Operating Temperature
0°C ~ 70°C
Package / Case
SIP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Features
-
Memory Size
-
Current - Transmitting
-
Other names
TXM-900-HP2
TXM-900-HP2
Revised 2/1/00
DESCRIPTION:
when paired with an HP Series-II receiver, is capable of
transmitting analog and digital information for distances
robust performance, the transmitter employs F M / F S K
FEATURES:
APPLICATIONS INCLUDE:
The HP Series-II transmitter module is designed for the
c o s t - e f fe c t i ve, high-perfo rmance wireless tra n s fer of
analog or digital data, in the popular 902-928MHz band.
The transmitter offers eight selectable channels and,
of up to 1000 ft. (under optimal conditions). To assure
modulation and an advanced microprocessor-controlled
s y n t h e s i zed architecture. L i ke all Linx modules, the HP
S e ries-II requires no tuning and in most cases no ex t e rn a l
RF components ( except an antenna), making integra t i o n
s t ra i g h t fo r ward even for engineers lacking previous RF
ex p e ri e n c e.
HP SERIES-II TRANSMITTER MODULE DESIGN GUIDE
8 Binary Selectable Transmission Frequencies
FM/FSK Modulation For Noise Immunity
Direct Analog/Serial Interface
High Data Rate (50Kbps max.)
Wide Supply Range (2.7-16V DC)
Power-Down & CTS Functions
No External RF Components Required (Except A n t e n n a )
FCC Compliant Output Power (0dBm typical)
Home/Industrial Automation
Remote Control
Remote Monitoring/Telemetry
Long-Range RFID
Analog Signal Transfer
General Wire Elimination
C o s t - E ff e c t i v e
Precision Synthesized Frequency Reference
Can Be Used To Transmit Analog (Including Audio) or Digital Data
No Production Tuning
Continuous Data Transfer
Wireless Networking
Remote Access
Fire/Security Alarms
High-Quality Wireless Audio
H
IGH
TXM-900-HP-II
RF MODULE
O R D E R I N G I N F O R M AT I O N
PART #
M D E V-900-HP-II E valuation Kit 900 MHz
TXM-900-HP-II
RXM-900-HP-II
P
ERFORMANCE
Figure 1: Physical Dimensions
DESCRIPTION
Transmitter 900 MHz
R e c e i ver 900 MHz
Page 1

Related parts for TXM-900-HP-II

TXM-900-HP-II Summary of contents

Page 1

... Remote Access Remote Monitoring/Telemetry Fire/Security Alarms Long-Range RFID High-Quality Wireless Audio Analog Signal Transfer General Wire Elimination Revised 2/1/ IGH ERFORMANCE RF MODULE TXM-900-HP-II Figure 1: Physical Dimensions PART # DESCRIPTION V-900-HP-II E valuation Kit 900 MHz TXM-900-HP-II Transmitter 900 MHz RXM-900-HP- ver 900 MHz Page 1 ...

Page 2

... PERFORMANCE DATA TXM-900-HP- The performance parameters listed below are based on module operation at 25°C from a 5VDC supply unless otherwise noted. Parameter Input Voltage (Vcc) Supply current Sleep current Operating frequency Overall frequency accuracy Output Power Spurious Emissions Harmonic Emissions Occupied Bandwidth ...

Page 3

TYPICAL PERFORMANCE GRAPHS 1.00 V/div 1.00 V/div 10.0 ms/div Figure 4: Power-On Timing Figure 6: Modulation Linearity for Square Wave Input Figure 8: Modulation Linearity for Triangle Wave Input PHYSICAL PACKAGING The transmitter is packaged as a hybrid through- hole ...

Page 4

PIN DESCRIPTION Figure 11: Pin functions and equivalent circuits Page 4 ...

Page 5

... THEORY OF OPERATION The HP-II-TXM is a high-performance, eight-channel, FM transmitter capable of transmitting analog or digital data. Figure 12: HP Series-II transmitter block diagram Digital information is modulated at the transmitter using FSK (frequency shift keying), the binary frequency modulation. FSK offers significant advantages over AM-based modulation methods, i.e., increased noise immunity and the ability of the receiver to “ ...

Page 6

An on-board micro-controller reads the channel-selection lines and programs the PLL to the desired channel frequency. The micro-controller also monitors the status of the PLL and indicates when the transmitter is stable and ready to transmit data by asserting the ...

Page 7

They should be grouped closely and the overall trace to the antenna kept as short as possible. Calculate the feed-trace width as shown under the “Microstrip Details” section of this manual and the trace should pass over a ...

Page 8

... CTS line transitioning high. The transmitter is then ready to accept modulated data from a user’s circuit. The HP-II-TXM can be put into an ultra- low-current (50µA) power-down mode by holding the PDN pin low. This removes all power from the transmitter’s circuitry. If ...

Page 9

NOTE: READ THIS IF YOU ARE GOING TO PERIODICALLY POWER DOWN THE TRANSMITTER!! There are some timing requirements the user must observe when periodically powering-up the transmitter. The on-period is determined by the start-up procedure and requires the user to ...

Page 10

INPUTTING DIGITAL DATA The data input pin may be directly connected to virtually any digital peripheral including microcontrollers, encoders, and UARTs. The data input has been optimized for NRZ serial data that transitions from (or has a ...

Page 11

Figure 19: Typical Application: Remote-Control Transmitter INPUTTING ANALOG SIGNALS ries-II modules capable of transmitting a wide range of analog signals with minimal The ...

Page 12

ANTENNA CONSIDERATIONS The range of the RF link is widely variable and depends upon the type of antenna employed and the operating environment. Proper design and matching of an antenna is a complex task requiring sophisticated test equipment and a ...

Page 13

COMMON ANTENNA STYLES From a coat hanger to a tuned Yagi, there are literally hundreds of antenna styles and variations that can be employed. Following is a brief discussion of the three styles most commonly utilized in compact RF designs. ...

Page 14

LEGAL CONSIDERATIONS NOTE: HP Series-II require external components to function. The modules are intended to allow for full Part 15 compliance; however, they are not approved by the FCC or any other agency worldwide. The purchaser understands that approvals may ...

Page 15

SURVIVING AN RF IMPLEMENTATION Adding an RF stage brings an exciting new dimension product. It also means that additional effo rt and commitment will be needed to bring the product successfully to marke utilizing ...

Page 16

U.S. CORPORATE HEADQUARTERS: LINX TECHNOLOGIES, INC. 575 S.E. ASHLEY GRANTS PASS, OR 97526 Phone: (541) 471-6256 FAX: (541) 471-6251 ...

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