LMD-400-R: 458 - 462.5 MHz0 pages
UHF Narrow Band Multi Channel Transceiver
LMD-400-R
458 - 462.5 MHz
LMD-400-R 458-462.5MHz is a synthesized multi channel transceiver module designed to meet FCC Part 90.267 for US market. This small,
highly integrated and fully shielded module is designed for embedding in user equipment. The module is suitable for various low power
industrial telecontrol and telemetry applications.
Features
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FCC Part 90.267 compliant
458 - 462.5 MHz band
Programmable RF channel with 12.5 kHz channel space
10 mW, GFSK, 4800 bps
Low power operation 3 - 5.5 V, 52 mA / TX, 42 mA / RX
Small size 50 x 30 x 9 mm
Excellent vibration & shock resistance / Mechanical durability
Wide operation range -20 to + 60 degree C
Applications
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Industrial remote control
Remote monitoring / SCADA / Security
Telemetry
Data acquisition
General
Specification
Applicable standard
FCC Part 90.267
Communication form
Half-duplex
Emission class
F1D
Modulation
GFSK
Frequency
458 to 462.5 MHz
Channel spacing
12.5 kHz / Channel programmable
Frequency stability
+/- 2.5 ppm (-20 to +60 degree C)
Aging rate
+/1 ppm / year
Data rate
4800 bps max. (Pulse width min.200 us, max. 15 ms)
Operating temp. range
-20 to +60 C
TX/RX switching time
15 ms typ. (DI vs DO)
Supply voltage
3.0 to 5.5 V
Supply current
52 mA (TX), 42 mA (RX)
Dimension
50 X 30 X 9 mm
Weight
Transmitter
part
Parameter
25 g
(All ratings at 25 degree C unless otherwise noted)
(Storage -30 to + 75 C )
Specification
RF output power
10 mW at 50 ohm (25 degree C)
Deviation
2.4 kHz (PN9, 4800 bps)
DI input level
Receiver part
Parameter
L = GND, H = 3 V to Vcc
Parameter
Specification
Receiver type
Double superheterodyne
IF
21.7 MHz (1st), 450 kHz (2nd)
Maximum input level
10 dBm
Receiver sensitivity
-116 dBm typ.(12dB SINAD )
-116 dBm typ.(BER 1%)
Co-channel rejection
- 7 dB (D/U ratio)
Spurious response rejection
70 dB
Adjacent CH selectivity
65 dB (25 kHz ch) / 55 dB (12.5 kHz ch)
Blocking
84 dB
DO output level
L = GND, H = 2.8 V
RSSI rising time
30 ms (25kHz shift), 50 ms (at power on)
Time until valid Data-out
50 ms (25kHz shift), 70 ms (at power on)
RSSI out
310 mV at -100 dBm, 240 mV at -110 dBm
Specifications are subject to change without prior notice
www.circuitdesign.jp
LMD-400-R_C ver1.1
Oct. 2012
Sales Division
7557-1 Hotaka, Azumino, Nagano 399-8303, Japan
Tel:+81-(0)263-82-1024
Fax:+81-(0)263-82-1016