CIRCUIT DESIGN LMD-400-R, Руководство по эксплуатации

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OG_LMD-400-R-AB_v11e Circuit Design, Inc. 4
OPERATION GUIDE
SPECIFICATIONS
LMD-400-R 438-442 MHz / 458-462 MHz
General characteristics
All ratings at 25 +/-10 °C unless otherwise noted
Item Units MIN TYP MAX Remarks
Applicable standard EN 300 113
Communication method Simplex, Half-duplex
Emission class F1D
Modulation type GFSK
438.000 442.000
Operating frequency range MHz
458.000 462.000
Operation temperature range °C -20 60 No dew condensation
Storage temperature range °C -30 75 No dew condensation
Aging rate ppm -1 1 TX freq., RX Lo freq.
Initial frequency tolerance ppm -1.5 1.5 TX freq., RX Lo freq.
Dimensions mm 30 x 50 x 9 mm Not including antenna
Weight g 25 g
Electrical specification <Common>
Item MIN TYP MAX Remarks
Oscillation type PLL controlled VCO
Frequency stability
(-20 to 60°C)
ppm -2.5 2.5 Reference frequency at 25 °C
TX/RX switching time ms 15 20 DI/DO
Channel step kHz 12.5
Data rate bps 2400 4800 DO/DI
Max. pulse width ms 15 20 DO/DI
Min. pulse width us 200 DO/DI
Data polarity Positive DO/DI
PLL reference frequency MHz 21.25 TCXO
PLL response ms 30 60 from PLL setting to LD out
Antenna impedance Ω 50 Nominal
Operating voltage V 3.0 5.5
TX consumption current mA 52 56 Vcc = 3.0 V
RX consumption current mA 42 46 Vcc = 3.0 V
Transmitter part
Item MIN TYP MAX Remarks
RF output power mW 10 Conducted 50 Ω
Deviation kHz +/-2.0 +/-2.4 +/-2.8 PN9 4800 bps
DI input level V 0 5.5 L= GND, H = 3 V- Vcc
Residual FM noise kHz 0.08 DI=L, LPF=20 kHz
-37 < 1000 MHz, conducted 50 Ω
Spurious emission dBm
-31 > 1000 MHz, conducted 50
Ω
Adjacent CH power nW 200 PN9 4800 bps
Occupied bandwidth kHz 8.5 PN9 4800 bps