Datum M7D IF and L-Band Compact Satellite Dual-Demods

Datum Systems M7D Dual-Demod L-Band / IF Satellite Demodulator

The Datum Systems M7D Dual-Demod is a compact, modular satellite demodulator platform designed for SCPC return links in point-to-point, point-to-multipoint, mesh, and multicast SATCOM networks. Housed in a half-rack 1RU chassis, it integrates two fully independent demodulators supporting IF or L-Band operation without shared bandwidth constraints. With advanced FlexLDPC FEC, ultra-sharp carrier roll-off down to 5%, and ultra-low latency acquisition, the M7D Dual-Demod delivers exceptional spectral efficiency for hub and remote installations.

Operating Mode: RX Continuous (SCPC)
Demodulators: 2 fully independent demod channels
Frequency Band: IF 50–180 MHz, L-Band 950–2150 MHz
Data Rate Range: 1.2 kbps to 59.04 Mbps (1 bps steps)
Symbol Rate Range: 2400 sps to 14.76 Msps (1 sps steps)
Modulation: BPSK, QPSK, OQPSK, 8PSK, 8QAM, 16QAM
FEC Options:
    • FlexLDPC (blk sizes 256 to 16k, rates 1/2 to 16/17)
    • Viterbi (k=7), Trellis-Coded Modulation
    • Reed Solomon, Turbo Product Code (optional HW)
Roll-Off Factors: 5, 8, 10, 15, 20, 25, 30, 35, 40 %
Input Acquisition Range: ±100 Hz to ±3 MHz (1 Hz steps)
Input Connectors:
    • L-Band: SMA (F), 50 Ω
    • IF: BNC, 50 or 75 Ω (user selectable)
Input Return Loss: IF > 20 dB, L-Band > 16 dB
Typical Acquisition Time: 71 ms at 64 kbps, QPSK
Ethernet Interface (E7): 4 × RJ-45 + 1 × SFP, Layer-2 bridge
Ethernet Features: QoS, VLAN support, 70,000 PPS throughput
Serial Interface (optional): RS-232, RS-485, V.35, EIA-530
Dual G.703/E1 Interface (optional): PCM-30 / PCM-31, N×64 kbps
Management: Web GUI, SNMP, RS-232 / RS-485
Alarm Outputs: 2 × Form-C
Power Input:
    • 100–240 VAC via AC-DC adapter (24 V, 65 W max)
    • 8–36 VDC or –48 VDC optional
Operating Temperature: 0 °C to +50 °C
Storage Temperature: –20 °C to +70 °C
Form Factor: Half-rack, 1RU height (2 units per 1RU)
Dimensions: 8.5 × 11 × 1.75 in
Weight: < 5 lb fully configured
Compliance: CE, ETSI EN 301 489, EN50022, EN50024, EN60950
RoHS: Compliant
ECCN: EAR99