L-band Modem

MDM-100203

L-band Modem

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Maximum total coverage is 5 years.



• Mobile Communications
• Disaster Recovery & Emergency Communications
• Enterprise Connectivity
• Cellular Backhaul
• Satellite News Gathering
• Internet access

KEY SPECIFICATIONS
ber
Turbo Product Codec   
QPSK/OQPSK3/4    7/8     0.95     
10-63.84.36.4
10-84.44.56.9
8PSK3/47/80.95
10-66.27.09.3
10-86.87.210.3
data rate range 2.4K to 50Mbps
demodulator acquisistion range

symbol rate < 625 ksps: ±32 kHz
symbol rate ≥ 625 ksps: ±200 kHz
demodulator acquisistion time Highly dependent on data rate, FEC rate, and demodulator acquisition range
demodulator input power range -94 ~ -16 dBm (-130 dBm + 10Log (symbol rate) ~ -900 dBm + 10Log (symbol rate))
demodulator receive buffer 8 bits to 64k bit
FEC TPC
frequency stability ± 0.01 ppm, -30° to 60° C
if frequency range 50 to 90 or 100 to 180 MHz, 100 Hz step
modulation BPSK, QPSK/OQPSK
modulator accuracy ± 1.0 dB over temperature
modulator harmonics spurious -55 dBc/4 kHz (typically <–60 dBc/4 kHz)
modulator output power range 0 ~ -40 dBm, 0.5 dB step
modulator output spectrum/filtering Meets IESS-308/-309 power spectral
modulator phase noise 0.75degree RMS (double-sided,100 Hz to 1 MHz）
modulator transmit on/off radio 55 dB
ref clock freq 10 MHz 
scrambling ITU V.35 (Intelsat IESS-308)
symbol rate 4.8Ksps ~ 15Msps 
Product Revision B
ELECTRICAL SPECIFICATIONS
input impedance 50 Ω, N type(F)
input power 100 to 240 VAC, 50/60 Hz
38 to 60 VDC
output impedance 50 Ω, N type(F)
INTERFACE SPECIFICATIONS
data interface RS530/V.35 / EIA-422/EIA-232: 1port ; G.703 E1/T1(Optional): 1ports; Ethernet(10/100Base-T Ethernet): 2ports
monitor functions Eb/No, frequency offset, BER, buffer fill status, RX signal level
m & c interface EIA-232, EIA-485 (2 lines/4 lines); Ethernet 10/100Base-T (SNMP, Web, or Telnet )
ENVIRONMENTAL SPECIFICATIONS
temperature commercial class 0°C to +55°C
temperature industrial class -40°C to +65°C
PHYSICAL SPECIFICATIONS
product height 44 mm
product length 482 mm 
product weight 3.5 kg max.
product width 340 mm