- Description
- Technical Specifications
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M7 L/LT L-Band Sat-Modems with M70 / D70 High Speed DVBS2X card sets
Datum Systems introduces advanced DVB-S2/S2X capability in the M7 series. This product combines state-of-the-art performance in a platform that is versatile, compact, highly efficient, and costs less to own and operate.
DVB-S2 and DVB-S2X Capability – Datum now offers DVB-S2 and DVB-S2X capability. The M7LT with M70 / D70 Cards allows optimized operation with the most efficient satellite data transmission solution. Datum supports both DVB-S2 modulation and also the recently standardized DVB-S2X extensions. DVB-S2X significantly improves satellite capacity by using much finer steps between modulation coding combinations (modcods) and allowing Filter Roll-Off options down to 5%. DVB-S2X can improve spectral efficiency up to 50% over DVB-S2. Datum features Symbol Rates up to 72 MHz to allow full utilization of wide transponders with data rates up to 350 Mbit/s. This configuration supports Filter Roll-Offs of 5%, 10%, 15%, 20%, 25%, 30%, 35% compliant with the standards. See our Advanced Filter Shaping White Paper for more information on the advantages of Low Filter Roll-Off.
Adaptive Coding & Modulation (ACM) – Datum’s M7LT fully supports ACM. This is the capability of a pair of modems to adjust their modcods to the best available case for the satellite link conditions. ACM works for the cases where the data rate can be variable. This is a perfect fit for Ethernet operation. Satellite links were historically backed off significantly to account for Rain Fade and Inclined Orbit operation. ACM gives back that lost capacity. The data rate in each direction is maximized by having the modems exchange small information packets that tell the distant end what modcod will maximize the capacity. This is done seamlessly when enabled. The unit can be set to utilize either DVB-S2 modcods or DVB-S2X (which includes DVB-S2) for better capacity
Smart Carrier Canceller – Smart Carrier is a patented advanced second generation carrier canceller which allows 2 similar carriers to occupy the same transponder spectrum, but is different from other cancellers in that it is a baseband canceller instead of an IF canceller. It allows excellent performance with easy setup and no additional cabling. Smart Carrier is compatible with all Datum modulation types and FECs, and is well suited to be used with DVB-S2 and DVB-S2X Sharp Roll-Off factors all the way down to 5%. Datum’s technique provides improvement in the Shannon Capacity of ~ 2 dB, which is ~50 % increase in the fundamental channel capacity.
System Architectures Supported
- Point-to-Point, Point-to-Multipoint,
- Mesh, Unicast & Multicast
Key Highlights
- DVB-S2 and DVB-S2X Capability
- Widest Range of Modcod selections
- 950 to 2150 MHz (50 to 180 MHz optional)
- Data Rate from 256 kbps to 350 Mbps
- 256 kHz to 72 MHz Symbol Rate, 1 bps steps
- QPSK/8PSK/8QAM/16APSK/32APSK/64APSK
(128APSK and 256APSK Optional) - Full DVB-S2X Range /Carrier Roll-Off Factors
- Fully Supported
Adaptive Coding and Modulation (ACM) - Optional Smart Carrier Cancelling
- E7-GSE Express Ethernet Interface
- Efficient GSE Encapsulation
- Layer 2 Bridge, Switch Based
- 4-Port with additional SFP Port
- QoS and VLAN Support
- VLAN Filtering
- Highly Configurable Remote Terminal
- Internal BUC and LNB Power Supply
- High Stability 10 MHz Reference
- Efficient Modem Control Channel, AUPC
- State-of-the-Art Web Browser GUI
- Local and Remote SNMP and Web Browser
Applications
- IP Trunking
- Enterprise
- IP Networks
- Cellular Backhaul
- Dynamic SCPC
Model M7L/LT-S2-S2X Specifications | |
---|---|
Data Services | DVB-S2 and DVB-S2X DVB-S2 per ETSI EN 302-307 DVB-S2X per ETSI EN A83-2 |
Data Rate Range | 256 Kbps to 350 Mbps |
Symbol Rate Range | 256 KHz to 72 MHz (1 Hz Steps) |
L-Band Tuning Range | 950 to 2150 MHz, (50 to 180MHz Optional)(1 Hz steps) |
Modulation Types | QPSK, 8PSK, 8QAM, 16APSK, 32APSK, 64APSK (Optional 128APSK, 256APSK) |
Forward Error Correction | LDPC Inner Code BCH Outer Code |
Filter Roll-Off | 5%, 10%, 15%, 20%, 25%, 30%, 35% |
Pilots | On/Off |
Frame Length | 64800 bits Long, 16200 bits Short |
DVB-S2 Short & Normal Frames | Modcods |
QPSK | 1/2 to 9/10 |
8PSK | 3/5 to 9/10 |
16APSK | 2/3 to 9/10 |
32APSK | 3/4 to 9/10 |
DVB-S2X Short & Normal Frames | Modcods |
QPSK | 13/45 to 9/10 |
8PSK/8QAM | 5/9 to 9/10 |
16APSK | 1/2 to 9/10 |
32APSK | 2/3 to 9/10 |
64APSK | 32/45 to 5/6 |
128APSK | 3/4, 7/9 |
256APSK | 32/45, 3/4, 29/45 to 11/15 |
ACM | Supported |
Es/No Range (QEF) | -2 dB to 17 dB |
Bits/Hz Range | 0.6 to 4.95 |
Modcod Selection | Automatic (Preferred Table) DVB-S2 and DVB-S2X |
Smart Carrier Cancelling | Optional, see detail section |
AUPC | Supported |
Data Interface | GB Ethernet Layer 2 Bridge |
Encapsulation | DVB GSE per ETSI TS 102 606 |
Modulator | |
Output Level | L-Band +5 to -35.00 (dBm) |
Output Level Accuracy | ±0.5 dB Over Freq, Level and Temp |
Output Impedance | 50 Ohms N-Type or 75 Ohms F-Type (factory option) |
Output Return Loss | > 16 dB |
Output Off Isolation | > 60 dB |
Output Spurious | < -60 dBc / 4 kHz BW |
Phase Noise | |
Offset = 10 Hz | < -78 dBc/Hz |
Offset = 100 Hz | < -95 dBc/Hz |
Offset = 1.0 kHz | < -110 dBc/Hz |
Offset = 10 kHz | < -110 dBc/Hz |
Offset = 100 kHz | < -115 dBc/Hz |
Offset = 1.0 MHz | < -130 dBc/Hz |
Mod Roll-Off Factor % | 5, 10, 15, 20, 25, 30, 35 (%) |
Ext Reference Frequency | 1, 1.544, 2.048, 5, 10, 20 (in MHz) |
External Ref Level | -10 dBm to +10 dBm |
Demodulator | |
Input Acquisition Range | ±100 Hz to ±3 MHz, 1 Hz Steps |
Minimum Input Level | 10 Log(Symbol Rate) - 125 = Lvl (dBm) |
Maximum Input Level | 10 Log(Symbol Rate) - 80 = Lvl (dBm) |
Maximum IF Input Power Density | +20 dBc/Hz |
Maximum Total Power | +10 dBm |
Input Impedance | 50 Ohms N-Type or 75 Ohms F-Type (factory option) |
Input Return Loss | L-Band > 16dB |
Input Phase Noise | > Intelsat by 6 dB typical, 4 dB min |
Demod Roll-Off Factor % | 5, 10, 15, 20, 25, 30, 35 (%) |
Smart Carrier Cancelling | |
Delay Range | 0 to 320 msec |
Acquisition Time | < 45 Sec for Full Delay Sweep < 2 Sec for 10 msec range |
Power Spectral Density Ratio | +/- 10 dB |
Symbol Rate Ratio | +/- 30% of Symbol Rate |
Frequency Offset | +/- 12.5% of Symbol Rate |
Eb/No Degradation | PSD Ratio 0 dB |
QPSK | 0.2 dB |
8PSK/8QAM | 0.3 dB |
16QAPSK | 0.5 dB |
32APSK | 0.7 dB |
64APSK | 0.8 dB |
Express Ethernet Interface (E7 GSE) | |
Encapsulation | Generic Stream (GSE) per ETSI TS 102 606 |
Protocols | IPV4 IPV6 VLAN Filtering MPLS Compatible |
QOS Priority | WRED, STRICT, NONE |
Jumbo Frames | Supported to 10240 bytes |
Copper Ports | 4 ports RJ45 (switch based) Auto Switching 10/100/1000Base T |
Optical Port | SFP GBE |
Monitor and Control | |
IP control Port | Fast Ethernet RJ-45 Web Server GUI (Browser) SNMP v2c |
Serial Control Port | RS-232 RS-485 |
Alarms Port | Qty 2 Form C Relay |
Environment and Physical M7L | |
AC to DC Adapter (Std) | Input 100-240 VAC, Output 24 V 65 W max |
DC Input (Rear of Unit) | 8 to 36 VDC, -48 VDC Optional |
Operating Temperature Range | 0°C to 50°C, 99% humidity, non-cond |
Storage Temperature | -20°C to +70°C, 99% humidity, non-con |
Size | 8.5" (W) x 11" (D) x 1.75" (H), (2 Units in 1 RU) |
Weight | < 5 lbs, fully configured |
Environment and Physical M7LT | |
AC or DC Input (factory option) | 90-264 VAC, Optional 48 VDC (20-60 VDC) |
High Stability Ref Option | Internal 10 MHz at Nominal, -3 dBm |
Reference Stability | 1 x 10-8 OCXO, 2 x 10-7/year aging |
BUC Power Options | AC Input Models: (Max Current Rating Listed) (1) 24 VDC@110 watts, 4.2A (2) 24 VDC@120 watts, 5.0A DC Input Models: (1) 48 VDC@100 watts, 2.1A (2) 48 VDC@150 watts 3.1A (3) 48 VDC@200 watts 4.2A |
LNB Output Power | Selectable: Off, 13 or 18 VDC |
Operating Temp Range | 0 to +50°C, 99% humidity, non-con |
Storage Temperature | -20°C to +70°C, 99% humidity, non-con |
Size | 19" (W) x 11" (D) x 1.75" (H), |
Weight | 10 lbs, fully configured |
Certification and Compliance | |
CE Certified for | ETSI EN 301 489-1 V1.9.2 (Emissions & Immunity) EN55022, EN55024, EN60950 (Safety) |
RoHS | Meets RoHS lead-free standards |