Datum M7LT L-Band Sat-Terminal Modular Satellite Modem

Datum Systems innovation is transforming the SCPC and MCPC modem industry with a new generation modular modem product, the M7 Series, that is versatile, compact, highly efficient and costs less to own and operate. Flexible M7 configurations include a full modem, mod-only, demod-only or multi-demod capability, all using common integrated assembly modules. Standard hardware houses our optional FlexLDPC FEC and many other advanced upgradable features to create the industry’s most spectral and space efficient low cost modem.

Product Code: Datum_M7LT

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Datum M7LT L-Band Sat-Terminal Modular Satellite Modem

Summary

Datum Systems innovation is transforming the SCPC and MCPC modem industry with a new generation modular modem product, the M7 Series, that is versatile, compact, highly efficient and costs less to own and operate. Flexible M7 configurations include a full modem, mod-only, demod-only or multi-demod capability, all using common integrated assembly modules.Standard hardware houses our optional FlexLDPC FEC and many other advanced upgradable features to create the industry’s most spectral and space efficient low cost modem.

Advanced FlexLDPC Onboard – With unparalleled configuration flexibility and superior coding gain, FlexLDPC takes FEC technology innovation to the next level, bringing strong economic advantages to satellite service providers and their customers. Granular code rates and block sizes get you the most out of your available satellite bandwidth and spectral power, while keeping processing latency at the desired level.

Sharp Carrier Roll-O Technology – The M7 Series supports advanced filtershaping for optimizied carrier spacing as a standard feature. Datum currentlyoffers down to an 5% Alpha, which means that carriers can be spaced at 1.05times the symbol rate instead of the historical factor of 1.35. This allows an immediate spectral efficiency increase and significant bandwidth savings,at no additional hardware or software cost. Filter Roll-Off options in the newM7 modems Series include 5%, 8%, 10%, 15%, 20%, 25%, 30%, 35% and 40%.See Advanced Filter Shaping White Paper for more information.

Internal BUC/LNB Power & Reference – The M7LT provides BUC and LNB powerfrom an integrated power supply. A High Stability10 MHz reference is also provided through the modem Input and Output Ports. Front panel voltage and current measurements are available for BUC and LNB monitoring.

Redundancy - Built-in 1:1 redundancy comes standard on the M7LT and supports BUC/LNB power and reference switching. It can be enabled through the front panel and requires only a few external cables and power splitters.

Key Highlights

• Highly Configurable Remote Terminal
• Internal BUC and LNB Power Supply
• High Stability 10 MHz Reference
• FlexLDPC Multi Block Sizes & Code Rates
• 1.2 kbps to 59.4 Mbps, 1 bps steps
• BPSK/QPSK/OQPSK/8PSK/8QAM/16QAM
• Widest Range of Carrier Roll-Off Factors
• Dual G.703/E1 Full & Fractional (N x 64)
• Advanced IP Interface
- 70,000 Packets Per Second Throughput
- Bridge and Router Modes
- Integrated Linux and Vyatta Routing
• Express Ethernet Interface
- Layer 2 Bridge, Switch Based
- 4-Port with additional SFP Port
- QoS and VLAN Support
• Lowest Latency, <15 ms at 64 kbps ¾ QPSK
• Fast acquisition time
• Multi-Flo Async Channel, AUPC
• State-of-the-Art Web Browser GUI

System Architecture Support

• Point-to-Point, Point-to-Multipoint
• Mesh, Multicasting

Applications

• Cellular Backhaul
• Enterprise
• IP Networks
• E1 Trunking
• On-the-Move
• Bandwidth on Demand

Datum M7LT L-Band Sat-Terminal Modular Satellite Modem

Specifications

Operating Modes	TX and RX Continuous (SCPC) FlexLDPC, Flexible Block and Code Rates, Low Latency Advanced TPC and Industry Compatible Std and Custom Async Low Overhead Channels, AUPC Remote Modem Control Channel IP, Ethernet, Dual G.703/E1 (D&I), Serial, HSSI Opt Plug-in I/O Selections (Up to 2 per M7 Unit)
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)
L-Band Tuning Range	950 to 2150 MHz (1 Hz steps)
Modulation Types	BPSK,QPSK,OQPSK,8PSK/QAM,16QAM
FEC Options	None, Viterbi, TCM, Reed-Solomon, FlexLDPC TPC 4k and TPC 16k (Opt Plug-in HW)
Advanced FlexLDPC	Block Sizes 256,512,1k,2k,4k,8k,16k Rates 1/2,2/3,3/4,14/17,7/8,10/11,16/17
Turbo Product Code	TPC-4k 21/44, 1/2, 3/4, 7/8, 0.950 TPC-16k 1/2, 3/4, 7/8, 0.453, 0.922
Viterbi	1/2, 3/4, 7/8 (k=7), Trellis 2/3
Reed Solomon	Selectable N & K, IESS 308/309/310
Scrambler/Descrambler	IBS, V.35, IESS, TPC, RS, LDPC, EFD

Typical Eb/No for 1E-8 BER

FlexLDPC™	QPSK	8PSK	8QAM	16QAM	Delay @ 64kbps
LDPC-1/2 - 2k	2.04 dB	n/a	3.80 dB	4.48 dB	49.6 ms
LDPC-1/2-4k	1.73 dB	n/a	3.44 dB	4.16 dB	98.0 ms
LDPC-1/2-8k	1.52 dB	n/a	3.19 dB	3.92 dB	195.0 ms
LDPC-1/2-16k	1.38 dB	n/a	3.04 dB	3.76 dB	388.6 ms
LDPC-2/3-2k	2.77 dB	4.88 dB	4.68 dB	5.85 dB	44.4 ms
LDPC-2/3-4k	2.46 dB	4.53 dB	4.36 dB	5.46 dB	87.5 ms
LDPC-2/3-8k	2.23 dB	4.28 dB	4.09 dB	5.19 dB	173.7 ms
LDPC-2/3-16k	2.09 dB	4.14 dB	3.91 dB	5.01 dB	346.1 ms
LDPC-3/4-2k	3.52 dB	5.97 dB	5.51 dB	6.78 dB	41.9 ms
LDPC-3/4-4k	3.14 dB	5.56 dB	5.11 dB	6.37 dB	82.4 ms
LDPC-3/4-8k	2.89 dB	5.27 dB	4.83 dB	6.07 dB	163.1 ms
LDPC-3/4-16k	2.72 dB	5.07 dB	4.63 dB	5.87 dB	325.0 ms
LDPC-7/8-2k	4.96 dB	7.89 dB	6.98 dB	8.48 dB	38.1 ms
LDPC-7/8-4k	4.32 dB	7.21 dB	6.40 dB	7.84 dB	74.6 ms
LDPC-7/8-8k	4.00 dB	6.86 dB	6.05 dB	7.51 dB	147.3 ms
LDPC-7/8-16k	3.90 dB	6.66 dB	5.87 dB	7.32 dB	293.6 ms
LDPC-10/11-2k	5.63 dB	8.73 dB	7.68 dB	9.37 dB	37.0 ms
LDPC-10/11-4k	5.00 dB	7.99 dB	7.02 dB	8.63 dB	72.3 ms
LDPC-10/11-8k	4.58 dB	7.51 dB	6.60 dB	8.18 dB	143.0 ms
LDPC-10/11-16k	4.40 dB	7.33 dB	6.35 dB	7.95 dB	284.5 ms

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, 8, 10, 15, 20, 25, 30, 35, 40 (%)
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
Receive Acquisition Time	Typical 71 ms at 64 kbps, QPSK
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, 8, 10, 15, 20, 25, 30, 35, 40 (%)

Interface Options: (Choose Up to Two Per Modem)

Serial Data Interface (S7) ▼
Main Interface Modes	Sync RS-232,449,V.35,EIA-530 (DB-25)
Internal Clock (ST) Accuracy	±1E-12, (±1 part per Trillion)
Doppler Buffer Depth	4 Bits to 524,284 Bits, 1 Bit Steps
ESC Overhead I/O Modes	Async RS-232,RS-485 (DB-25)
Adv Mux ESC OH Data Rate	Disabled, 300 bps to 3.5 Mbps, 1 bps Steps
Adv Mux (MCC) OH Data Rate	Disabled, 300 to 29.52 Mbps, 1 bps Steps
ESC Remote Signaling I/O's	Form C (Qty 2)


Advanced IP Interface (I7) ▼
Adv Ethernet IP Interface	10/100 BaseT, Gigabit Ethernet (RJ-45)
Operating System	Debian Linux Operating System
Operating Modes	Bridge and Vyatta Router
Packets Per Second	70,000 PPS
Network Protocols:	See Specification


Express Ethernet Interface (E7) ▼
Express Ethernet Ports	4Ports (RJ-45), 1 Port SFP
4 Port Interface	10/100 BaseT, Gigabit Ethernet (RJ-45)
SFP Port	Optional Gigabit or Optiuc Fiber
Ethernet Protocol	Layer 2 Swtched Bridge Only
Features	QoS and VLAN Selectable


Dual G.703/E1 Interface (G7) ▼
G.703 E1 Physical Inputs	Dual Bal Inputs on (RJ-48), UnBal Opt
Formats Supported	Full E1, D&I / PCM-30 (CAS), PCM-31 (CCS)
D&I Time Slots Supported	N x 64, N = 1 to 31 Time Slots


HSSI Interface (H7)

Misc.

Monitor and Control ▼
Remote Control Interfaces	RS-232, RS-485, SNMP, Web Browser
Alarm Outputs	Qty 2 Form C

Environment and Physical ▼
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-cond
Storage Temperature	-20 to +70°C, 99% humidity, non-cond
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)
	EN60950 (Safety)
RoHS	Meets RoHS lead-free standards

Datum® M7LT Modem Datasheet (942.9KB)