TXM-900-HP-II Linx Technologies Inc, TXM-900-HP-II Datasheet - Page 11

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

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

Figure 19: Typical Application: Remote-Control Transmitter
INPUTTING ANALOG SIGNALS
PROXIMITY OPERATION
H P S e ries-II
capable of transmitting a wide
range of analog signals with
minimal d i s t o rt i o n . The Ty p i c a l
Pe r fo rm a n c e Graphs on p. 3 of
this
modulation linearity for a va ri e t y
of simple wave fo rm s. The module
is equally adept at transmitting
c o m p l ex wave fo rms such as
vo i c e. Analog signals ra n g i n g
from 50 Hz to 25 KHz may be
applied to the data input pin.The
voltage swing on the data input
pin should be between ground and 3 volts. This voltage directly modulates the
VCXO in order to obtain an FM output.
The illustration above shows the simplicity of transmitting audio with the HP
Series-II. In applications where the highest audio quality is required an external
compandor such as a Phillips SA576 may be employed to increase dynamic
range and reduce noise.
Multiple transmitters may be active on separate channels so long as an adjacent
channel’s signal does not enter the receiver at a level exceeding the rejection
capability of the receiver. If modules are combined to form a transceiver they
should be operated in half-duplex, meaning that only the transmitter or receiver
is active at any time.
manual
modules
illustrate
are
the
Figure 20: Typical Application:Voice Transmitter
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