Comtech EF Data CDM-570A & CDM-570AL-IP Next Generation Satellite Modems
Adaptive Cancellation” technology, Carrier-in-Carrier Automatic Power Control, Optimized Transmit Filter Rolloffs, Vipersat Management System
CDM-570A & CDM-570AL-IP Next Generation Satellite Modems
The Comtech CDM-570A and CDM-570AL-IP are next generation satellite modems that provide highly advanced performance and the ultimate flexibility in a 1 RU package at an extremely competitive price. Complete support for VersaFEC low latency LDPC Forward Error Correction (FEC), the revolutionary DoubleTalk Carrier-in-Carrier bandwidth compression.
The CDM-570A and CDM-570AL-IP provide significant bandwidth savings. This combination of advanced technologies enables multi-dimensional optimization, allowing satellite communications users to:
Minimize operating expenses (OPEX)
Maximize throughput without using additional transponder resources
Maximize availability (margin) without using additional transponder resources
Minimize capital expenses (CAPEX) by allowing a smaller BUC/amplifier and/or antenna
Or, a combination to meet specific business needs
The modems are available with 70/140 MHz or L-Band IF and EIA-530/-422, V.35, sync EIA-232 and G.703 T1/E1 data interfaces. The CDM-570AL-IP includes a high-performance packet processor for IP-centric applications.
Key Features
DoubleTalk Carrier-in-Carrier bandwidth compression
Carrier-in-Carrier Automatic Power Control (CnC-APC)
VersaFEC low latency LDPC
VersaFEC Adaptive Coding & Modulation (ACM) for point-to-point IP circuits
5%, 10%, 15%, 20%, 25% and 35% Transmit Filter Rolloff
Data rate range from 2.4 kbps to 10.239 Mbps
CDM-570A: 50 to 90 or 100 to 180 MHz IF range
CDM-570AL: 950 to 2250 MHz IF range
Modulation: BPSK, QPSK, OQPSK, 8PSK, 8-QAM, 16-QAM
Forward Error Correction (FEC) options include VersaFEC, Turbo Product Code (TPC), Viterbi, Reed-Solomon, and Trellis Coded Modulation (TCM)
Data Interfaces: EIA-422/530, V.35, G.703 T1/E1, sync EIA-232, 10/100Base-T Ethernet (option)
High-performance Packet Processor with 10/100Base-T Ethernet port (CDM-570A-IP and CDM-570AL-IP)
Vipersat Management System (VMS) integration (CDM-570A-IP and CDM-570AL-IP)
Header and payload compression ((CDM-570A-IP and CDM-570AL-IP)
Quality of Service (QoS) (CDM-570A-IP and CDM-570AL-IP)
Management via SNMP, Web, Telnet or Command Line Interface (CDM-570A-IP and CDM-570AL-IP)
G.703 clock extension
Automatic Uplink Power Control (AUPC)
Embedded Distant-end Monitor and Control (EDMAC/EDMAC2)
Redundancy options
CDM-570A: FSK communications to CSAT-5060 or KST-2000A
CDM-570AL-IP: 10 MHz reference for BUC, FSK communications and optional BUC power supply
CDM-570AL-IP: 10 MHz reference and power supply for LNB
Data Rate Range (See user manual for details) |
2.4 kbps to 10.239 (depending on modulation, FEC and framing), 1 bps step with fully independent TX and RX rates |
Symbol Rate |
4.8 ksps to 3.0 Msps |
Frequency Range |
CDM-570A: 50 to 90 or 100 to 180 MHz, 100 Hz resolution |
Data Interfaces |
EIA-422/-530 DCE, V.35 DCE, Sync EIA-232, G.703 T1 balanced, G.703 E1 balanced or unbalanced |
Modulation & FEC Options |
Data Rate Range |
VersaFEC |
|
BPSK 0.488 |
2.4 kbps to 1.462-Mbps |
QPSK 0.533 |
5.2 kbps to 3.200-Mbps |
QPSK 0.631 |
6.1 kbps to 3.785-Mbps |
QPSK 0.706 |
6.8 kbps to 4.233-Mbps |
QPSK 0.803 |
7.8 kbps to 4.818 Mbps |
8-QAM 0.576 (ECCM) |
8.3 kbps to 5.179 Mbps |
8-QAM 0.642 |
9.3 kbps to 5.782 Mbps |
8-QAM 0.711 |
10.3 kbps to 6.401 Mbps |
8-QAM 0.780 |
11.3 kbps to 7.021 Mbps |
16-QAM 0.644 (ECCM) |
12.4 kbps to 7.726 Mbps |
16-QAM 0.731 |
14.1 kbps to 8.776 Mbps |
16-QAM 0.780 |
15 .0 kbps 9.361 Mbps |
16-QAM 0.829 |
16.0 kbps to 9.946 Mbps |
16-QAM 0.853 |
16.4 kbps to 10.239 Mbps |
VersaFEC Ultra Low Latency (ULL) Codes |
|
BPSK 0.493 (ULL) |
2.4 kbps to 1.479 Mbps |
QPSK 0.493 (ULL) |
4.8 kbps to 2.959 Mbps |
QPSK 0.654 (ULL) |
6.3 kbps to 3.923 Mbps |
QPSK 0.734 (ULL) |
7.0 kbps to 4.405 Mbps |
Turbo Coding |
|
BPSK 5/16 |
2.4 kbps to 0.937 Mbps |
BPSK 21/44 |
2.4 kbps to 1.430 Mbps |
QPSK/OQPSK 21/44 |
4.8 kbps to 2.860 Mbps |
QPSK/OQPSK 3/4 |
7.2 kbps to 4.500 Mbps |
QPSK/OQPSK 7/8 |
8.4 kbps to 5.250 Mbps |
QPSK/OQPSK 0.95 |
9.1 kbps to 5.666 Mbps |
8PSK/8-QAM 3/4 |
10.8 kbps to 6.750 Mbps |
8PSK/8-QAM 7/8 |
13.6 kbps to 7.875 Mbps |
8PSK/8-QAM 0.95 |
15.3 kbps to 8.500 Mbps |
16-QAM 3/4 |
14.4 kbps to 9.000 Mbps |
16-QAM 7/8 |
16.8 kbps to 9.980 Mbps |
Viterbi |
|
BPSK 1/2 |
2.4 kbps to 1.500 Mbps |
QPSK/OQPSK 1/2 |
4.8 kbps to 3.000 Mbps |
QPSK/OQPSK 3/4 |
7.2 kbps to 4.500 Mbps |
QPSK/OQPSK 7/8 |
8.4 kbps to 5.250 Mbps |
Viterbi + Reed Solomon |
|
BPSK 1/2 |
2.4 kbps to 1.363 Mbps |
QPSK/OQPSK 1/2 |
4.3 kbps to 2.727 Mbps |
QPSK/OQPSK 3/4 |
6.5 kbps to 4.090 Mbps |
QPSK/OQPSK 7/8 |
7.5 kbps to 4.666 Mbps |
16-QAM 3/4 |
13.0 kbps to 4.000 Mbps |
16-QAM 7/8 |
16.8 kbps to 4.666 Mbps |
TCM + Reed Solomon |
|
2/3 8PSK TCM (Closed network) |
8.7 kbps to 4.400 Mbps |
Uncoded |
|
Uncoded BPSK |
4.8 kbps to 3.000 Mbps |
Uncoded QPSK/OQPSK |
9.6 kbps to 5.000 Mbps |
Note: |
Data rate specifications reflect CDM-570A/L or CDM-570A/L-IP modem operating in non-Vipersat mode |
Scrambling |
Mode dependent – ITU V.35, or proprietary externally synchronized |
M&C Interface |
Ethernet 10/100Base-T, EIA-232, EIA-485 |
Input/Output Impedance |
CDM-570A: matched for 50/75 Ω, 17 dB minimum return loss, BNC connector |
External Reference Input |
1, 2, 5, or 10 MHz, BNC connector |
Form C Relays |
TX, RX traffic alarms and unit faults |
Modulator |
|
Frequency Stability (With Internal Reference) |
|
Output Power |
|
Accuracy |
|
Phase Noise |
|
Output Spectrum/ Filtering |
Meets IESS-308/-309 power spectral mask |
Alpha (Rolloff) |
5%, 10%, 15%, 20%, 25% and 35% |
Harmonics and Spurious |
-60 dBC/4 kHz from 600 to 2600 MHz (L-Band), from 1 to 400 MHz (IF) |
Transmit On/Off Ratio |
55 dB minimum |
External TX Carrier Off |
By TTL LOW signal, or RTS |
TX Clock Options |
Internal (SCT), external (TT), loop timing with symmetric or asymmetric operation (data interface dependent) |
Demodulator |
|
Input Power Range |
|
Max Composite Level |
|
Acquisition Range |
|
Acquisition Time |
Highly dependent on data rate, FEC rate, and demodulator acquisition range. Example: 120 ms average at 64 kbps, Rate 1/2 QPSK, ± 10 kHz acquisition sweep range, 6dB Eb/No |
Plesiochronous/ Doppler Buffer |
±128, 256, 512, 1024, 2048, 4096, 8192, 16384 or 32768 bits |
Receive Clock Options |
Buffer disabled (RX satellite), buffer enabled (symmetric or asymmetric operation) (data interface dependent) |
Clock Tracking |
± 100 ppm minimum |
Monitor Functions |
Eb/No, frequency offset, BER, buffer fill status, RX signal level |
DoubleTalk Carrier-in-Carrier |
|
Delay Range |
0 to 330 ms |
Power Spectral Density Ratio |
-7 dB to +7 dB |
Maximum Symbol Rate Ratio |
3:1 (TX:RX or RX:TX) |
Eb/No Degradation |
0 dB Power Spectral Density Ratio |
Satellite Restrictions |
Satellite in “loop-back” mode (i.e., the transmit station can receive itself) “Non-processing” satellite (i.e., does not demodulate or remodulate the signal) |
Low-Noise Block Converter(LNB) Support |
|
LNB Voltage |
13 and18 VDC |
LNB Reference |
10 MHz via RX center conductor |
Block Up Converter (BUC) Support |
|
BUC Voltage |
24 VDC, 90 W @ 50°C, 100 W @ 30°C |
BUC Reference |
10 MHz via TX center conductor |
FSK Support |
Via TX center conductor with FSK BUCs |
Environmental & Physical |
|
Temperature |
|
Power Supply |
100 to 240 VAC, 50/60 Hz |
Power Consumption |
CDM-570A: 29 W typical (32 W max.) |
Dimensions |
CDM-570A: 1.75” x 19” x 13” (4.4 x 48.3 x 330 cm) |
Weight |
CDM-570A: 5 lbs (2.3 kg) |
Operations & Maintenance |
|
Configuration and Management |
Front panel |
Software/firmware upgrade via FTP |
|
Faults and alarms |
|
Configuration backup and restoral |
|
Security |
|
Password protection for web, ftp and telnet |
|
Access list |
|
Regulatory |
|
CE Mark |
EN 301 489-1 (ERM) |
FCC |
FCC Part 15, Subpart B |
Enterprise Networks
Offshore & Maritime Communications
Mobile Backhaul
Communications on-the-Move
Disaster Recovery & Emergency Communications
Satellite News Gathering