Comtech EF Data CDM-840 Remote Satellite IP Router System
Ideal for mobile backhaul applications, Integrated router with RAN Optimization
CDM-840 Remote Satellite IP Router System
The Comtech CDM-840 Remote Satellite IP Router System offer streamline encapsulation which results in ultra low overhead. Header compression and payload compression are also a couple of the great benefits that the Comtech CDM-840 Remote Satellite IP Router System offers.
Advanced VSAT Series
Comtech EF Data’s Advanced VSAT Solutions portfolio provides high-performance satellite-based communication solutions for a diverse range of applications, including maritime and offshore communications, mobile backhaul with RAN optimization, IP trunking and backhaul, corporate and enterprise networks, emergency and disaster recovery. Incorporating advanced technologies developed by Comtech EF Data, AHA Products Group, Memotec and Stampede, the solutions provide unmatched performance, industry-leading bandwidth efficiencies and network optimization –while minimizing Total Cost of Ownership.
Built-In Payload Compression
Designed for use at remote sites, CDM-840 combines a wide range of advanced technologies in a 1RU platform enabling the most efficient bandwidth utilization for hub-spoke networks:
IP Trunking & Internet Access
High-performance packet processing
Lossless Payload compression
Header compression
Advanced Quality of Service (QoS)
Dynamic SCPC with VMS
DVB-S2 and VersaFEC low-latency LDPC Forward Error Correction
Ultra low overhead encapsulation
E1 RAN Optimization
Features
High-Performance Integrated Packet Processing
Layer 2 (Bridged Point to Multipoint - BPM) or Layer 3 (Routed) operation
Jumbo frame support
VLAN support in BPM mode
Advanced Quality of Service (QoS)
Header compression, including Layer 2 headers in BPM mode
Lossless payload compression
Ultra low overhead Streamline Encapsulation (TX)
Low overhead Enhanced Generic Stream Encapsulation (GSE) (RX)
Integrated with NetVue Integrated Management System and Vipersat Management System
Integrated E1 RAN Optimization
Simultaneous IP/Ethernet and E1 operation
Advanced Forward Error Correction
VersaFEC low-latency LDPC transmit
DVB-S2 receive
Adaptive Coding and Modulation (ACM) capable transmit and receive
Variable Coding and Modulation (VCM) capable receive
Transmit Data Rates
Data rate: 16 kbps to 15.35 Mbps
Symbol rate: 16 ksps to 4.5 Msps
Modulation: BPSK, QPSK, 8-QAM, 16-QAM
Rolloff : 20%, 25%, 35%
Ultra low overhead Streamline Encapsulation
Receive Frequencies
Frequency: 950 to 2150 MHz
Data rate: 1 Mbps to 160 Mbps
Symbol rate: 1 Msps to 62 Msps
Rolloff : 20%, 25%, 35%
Demodulation: QPSK, 8PSK, 16APSK, 32APSK
Low overhead enhanced Generic Stream Encapsulation
Operating Frequency: 950 to 2150 MHz
Traffic Interfaces
10/100/1000Base-T Ethernet
G.703 E1
Management Interface: 10/100Base-T Ethernet for web and SNMP
BUC and LNB support
1:1 Redundancy
Transmit |
|
Data Rate |
16 kbps to 15.35 Mbps, in 1 bps step (CCM mode) (Modulation and FEC dependent) |
Symbol Rate |
16 ksps – 4.5 Msps (CCM mode) |
FEC |
VersaFEC Encoder (ACM and CCM modes) |
Modulation & Code Rate |
Data Rate Range |
BPSK 0.488 |
16.00 kbps – 2.19 Mbps |
QPSK 0.533 |
17.07 kbps – 4.80 Mbps |
QPSK 0.631 |
20.19 kbps – 5.67 Mbps |
QPSK 0.706 |
22.577 kbps – 6.34 Mbps |
QPSK 0.803 |
25.69 kbps – 7.22 Mbps |
8-QAM 0.642 |
30.83 kbps – 8.67 Mbps |
8-QAM 0.711 |
34.14 kbps – 9.60 Mbps |
8-QAM 0.780 |
37.44 kbps – 10.53 Mbps |
16-QAM 0.731 |
46.80 kbps – 13.16 Mbps |
16-QAM 0.780 |
49.92 kbps – 14.04 Mbps |
16-QAM 0.829 |
53.04 kbps – 14.91 Mbps |
16-QAM 0.853 |
54.60 kbps – 15.35 Mbps |
Encapsulation |
Ultra low overhead Streamline Encapsulation |
Receive |
|
Receive Data Rate (Pilots Off) |
QPSK: 1.000 – 110.893 Mbps |
Receive Symbol Rate |
QPSK: 1 to 62 Msps |
FEC |
DVB-S2 Decoder (ACM, CCM and VCM modes) Normal frame |
Modulation & FEC |
Data Rate Range
|
QPSK 1/4 |
1.000 – 30.395 Mbps |
QPSK 1/3 |
1.000 – 40.699 Mbps |
QPSK 2/5 |
1.000 – 48.943 Mbps |
QPSK 1/2 |
1.000 – 61.309 Mbps |
QPSK 3/5 |
1.188 – 73.674 Mbps |
QPSK 2/3 |
1.322 – 81.979 Mbps |
QPSK 3/4 |
1.487 – 92.223 Mbps |
QPSK 4/5 |
1.587 – 98.406 Mbps |
QPSK 5/6 |
1.654 – 102.589 Mbps |
QPSK 8/9 |
1.766 – 109.519 Mbps |
QPSK 9/10 |
1.788 – 110.893 Mbps |
8-PSK 3/5 |
1.779 – 110.359 Mbps |
8-PSK 2/3 |
1.980 – 122.799 Mbps |
8-PSK 3/4 |
2.228 – 138.143 Mbps |
8-PSK 5/6 |
2.478 – 153.670 Mbps |
8-PSK 8/9 |
2.646 – 164.052 Mbps |
8-PSK 9/10 |
2.679 – 166.110 Mbps |
16-APSK 2/3 |
2.637 – 123.948 Mbps |
16-APSK 3/4 |
2.966 – 139.436 Mbps |
16-APSK 4/5 |
3.165 – 148.784 Mbps |
16-APSK 5/6 |
3.300 – 155.108 Mbps |
16-APSK 8/9 |
3.523 – 165.587 Mbps |
16-APSK 9/10 |
3.567 – 167.665 Mbps |
32-APSK 3/4 |
3.703 – 168.000 Mbps |
32-APSK 4/5 |
3.951 – 168.000 Mbps |
32-APSK 5/6 |
4.119 – 168.000 Mbps |
32-APSK 8/9 |
4.397 – 168.000 Mbps |
32-APSK 9/10 |
4.453 – 168.000 Mbps |
Pilots |
On/off, automatically detected |
Encapsulation |
Low overhead Enhanced GSE |
Modulator |
|
Operating Frequency |
950 to 2150 MHz L-Band, |
Frequency Stability |
± 0.06 ppm (± 6 x 10-8), 0° to 50°C (32° to 122° F) |
Frequency Reference |
Internal |
Scrambling |
Comtech, disabled |
Spectral Inversion |
Normal or inverted |
Transmit Filtering |
Per IESS-308/-309 spectral mask |
Transmit Filter Rolloff (Alpha) |
20%, 25% and 35% |
Output Power |
0 to -40 dBm, in 0.1 dB steps |
Power Accuracy |
± 1.0 dB over frequency, data rate, modulation type and temperature range of 0 to 50° C |
Transmit On/Off Ratio |
-60 dBc minimum |
Harmonics and Spurious |
Better than -60 dBc/4 kHz |
Output Phase Noise |
|
< 1º rms double sided, 100 Hz to 1MHz (minimum of 6 dB better overall than the Intelsat IESS-308/309 requirement) |
|
Fundamental AC line spurious is -42 dBc or lower The sum of all other single sideband spurious, from 0 to 0.75 x symbol rate, is -48 dBc or lower |
|
Connector |
Type N (female) |
Impedance |
50 Ω |
Return Loss |
20 dB, minimum |
External TX Carrier Off |
By TTL ‘low’ signal |
Test Modes |
CW, 1/0 pattern, 2^23-1 and 2047 patterns |
BUC Reference (10 MHz) |
Via TX IF center conductor, 10.0 MHz ± 0.06 ppm, selectable on/off, 0.0 dBm ± 3 dB |
BUC Power Supply (HW Option) |
24 VDC, 4.17 Amps max., 90 W @ 50° C |
Demodulator Specifications |
|
Operating Frequency |
950 to 2150 MHz L-Band, 100 Hz frequency resolution |
Connector |
Type N (female) |
Impedance |
50 Ω |
Input Power Range, Desired Carrier |
-65 dBm + 10 log (symbol rate in MHz) to -25 dBm |
Maximum Composite Operating Level |
-5 dBm total composite power |
Absolute Maximum, No Damage |
-10 dBm |
Rolloff |
20%, 25%, 35% |
Acquisition Range |
+/- 100 kHz |
Adaptive Equalizer |
Corrects up to 3 dB tilt |
Return Loss |
12 dB, minimum (typical 15 dB) |
LNB Reference (10 MHz) |
Via RX IF center conductor, 10.0 MHz ± 0.06 ppm |
LNB Voltage |
Selectable on/off, 13 VDC, 18 VDC, 24 VDC |
LNB Current |
500 mA, maximum |
Monitor Functions |
Es/No estimate, receive signal level, frequency offset |
Es/No Monitor Accuracy |
+/- 0.3 dB |
Receiver Signal Level Monitor Accuracy |
+/- 6 dB (typical) |
Packet Processing |
|
Supported Protocols |
|
RFC 768 – UDP |
RFC 1812 – IPv4 Routers |
Statistics |
Detailed packet and throughput stats |
Connector Interface |
|
L-Band Transmit and Receive |
2 x N-type (female) |
10/100Base-T Ethernet interface (IEEE 802.3u) |
RJ-45 |
10/100/1000Base-T Ethernet interface (IEEE 802.3ab) |
RJ-45 |
G.703 E1, 2.048 Mbps (Unbalanced 75 Ω) |
BNC (female) |
Remote Control |
9-pin D-sub (male) |
Redundancy Interface |
9-pin D-sub (female) |
Available Options |
|
Option |
Type |
-48 VDC, Primary Power Supply |
Hardware |
24 VDC, 90 W @ 50° C BUC Power Supply |
Hardware |
48 VDC, 150 W @ 50° C BUC Power Supply |
Hardware |
Transmit Data Rate |
FAST |
Receive Data Rate |
FAST |
Lossless Payload Compression / |
FAST |
Header Compression/Decompression |
FAST |
Advanced Quality of Service |
FAST |
E1 RAN Optimization |
FAST |
G.703 Clock Extension |
FAST |
Physical, Power & Environmental |
|
Dimensions (1RU) (H x W x D) |
1.75” x 19.0” x 16.1” |
Power Supply |
100-240 VAC, 47Hz-63Hz IEC 320 input |
Operating Temperature |
0° to 50°C |
Storage temperature |
–20° to 70°C |
Humidity |
95% maximum, non-condensing |
Accessories |
|
CRS-170A |
1:1 Modem Redundancy Switch |
Regulatory |
|
CE Mark |
EN55022 Class B (Emissions) |
FCC Approval |
FCC Part 15 Class B |
Typical Users
Offshore & Maritime
Mobile Operators
Telecom Operators
Enterprise
Internet Service Providers (ISPs)
Common Applications
Maritime & Offshore Communications
Mobile Backhaul with RAN Optimization
IP Trunking & Internet Access