Datum M7D 32-Channel IF and L-Band Satellite Multi-Demodulator

Datum M7D 32-Channel IF and L-Band Satellite Multi-Demodulator 

The Datum Systems M7D is a compact, high-density 32-channel satellite multi-demodulator designed for SCPC return links in point-to-multipoint, mesh and HTS hub networks. It provides up to 32 independent ACM receive channels in a half-rack 1RU enclosure, substantially reducing the equipment space and cost required at satellite hubs and teleports.

The M7D contains two multi-demodulator cards with 16 receive channels and 80 MHz of center-frequency bandwidth per card. Two M7D units can be installed side by side to provide as many as 64 independent receive channels in a single 1RU rack space.

Supporting 50–180 MHz IF and 950–2250 MHz L-band, the M7D offers FlexLDPC coding, Adaptive Coding and Modulation, data rates up to 75 Mbps and symbol rates up to 72 Msps. Its integrated Gigabit Ethernet switch connects all receive channels to the LAN through a consolidated network interface.

Frequency Range: 50–180 MHz IF or 950–2250 MHz L-band
Receive Channels: Up to 32 independent channels per unit
Multi-Demodulator Cards: Two cards with 16 channels each
Center-Frequency Bandwidth: 80 MHz per card; 160 MHz total
Data Rate: 16 kbps–75 Mbps per channel and aggregate
Symbol Rate: 16 ksps–72 Msps per channel and aggregate
Operating Mode: Continuous SCPC receive
Modulation: BPSK, QPSK, 8APSK and 16QAM
FEC: FlexLDPC with 2k, 4k, 8k and 16k block sizes
Adaptive Coding and Modulation: Supported
Carrier Roll-Off: 5%, 10%, 15%, 20%, 25%, 30% and 35%
Ethernet Interface: Five RJ-45 ports plus optional SFP
Ethernet Protocol: Layer 2 switched bridge
Network Features: QoS and selectable VLAN support
Management: Web browser, SNMP, RS-232 and RS-485
Input Power: 8–36 VDC; optional -48 VDC
Operating Temperature: 0°C to +50°C
Dimensions: 8.5 × 11 × 1.75 inches
Weight: Less than 5 lb fully configured

Key Features:

• Up to 32 independent ACM demodulators in a half-rack unit

• Up to 64 receive channels in one 1RU using two M7D units

• Two 16-channel multi-demodulator cards

• IF and L-band frequency configurations

• 160 MHz total center-frequency bandwidth

• FlexLDPC with granular code rates and block sizes

• Data rates up to 75 Mbps

• Symbol rates up to 72 Msps

• Adaptive Coding and Modulation for increased link availability

• Sharp carrier roll-off factors down to 5%

• Integrated Gigabit Ethernet network interface

• Fast carrier acquisition

• Compact platform for FSS and HTS satellite hubs

• Suitable for cellular backhaul, enterprise and IP networks