Comtech CDM-570A & CDM-570AL-IP Next Generation Satellite Modems

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CDM-570AL
Comtech CDM-570A & CDM-570AL-IP Next Generation Satellite Modems is available to buy in increments of 1

Adaptive Cancellation” technology, Carrier-in-Carrier Automatic Power Control, Optimized Transmit Filter Rolloffs, Vipersat Management System

CDM-570A & CDM-570AL Next Generation Satellite Modems

The Comtech CDM-570A and CDM-570AL 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 provide significant bandwidth savings. This combination of advanced technologies enables multi-dimensional optimization, allowing satellite communications users to:
arrow Minimize operating expenses (OPEX)

arrow Maximize throughput without using additional transponder resources

arrow Maximize availability (margin) without using additional transponder resources

arrow Minimize capital expenses (CAPEX) by allowing a smaller BUC/amplifier and/or antenna

arrow 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-570A/L-IP include a high-performance packet processor for IP-centric applications.

Comtech CDM-570A Modem RF Interface Panel

Key Features

arrow DoubleTalk Carrier-in-Carrier bandwidth compression

arrow Carrier-in-Carrier Automatic Power Control (CnC-APC)

arrow VersaFEC low latency LDPC

arrow VersaFEC Adaptive Coding & Modulation (ACM) for point-to-point IP circuits

arrow 5%, 10%, 15%, 20%, 25% and 35% Transmit Filter Rolloff

arrow Data rate range from 2.4 kbps to 10.239 Mbps

arrow CDM-570A: 50 to 90 or 100 to 180 MHz IF range

arrow CDM-570AL: 950 to 2250 MHz IF range

arrow Modulation: BPSK, QPSK, OQPSK, 8PSK, 8-QAM, 16-QAM

arrow Forward Error Correction (FEC) options include VersaFEC, Turbo Product Code (TPC), Viterbi, Reed-Solomon, and Trellis Coded Modulation (TCM)

arrow Data Interfaces: EIA-422/530, V.35, G.703 T1/E1, sync EIA-232, 10/100Base-T Ethernet (option)

arrow High-performance Packet Processor with 10/100Base-T Ethernet port (CDM-570A-IP and CDM-570AL-IP)

arrow Vipersat Management System (VMS) integration (CDM-570A-IP and CDM-570AL-IP)

arrow Header and payload compression ((CDM-570A-IP and CDM-570AL-IP)

arrow Quality of Service (QoS) (CDM-570A-IP and CDM-570AL-IP)

arrow Management via SNMP, Web, Telnet or Command Line Interface (CDM-570A-IP and CDM-570AL-IP)

arrow G.703 clock extension

arrow Automatic Uplink Power Control (AUPC)

arrow Embedded Distant-end Monitor and Control (EDMAC/EDMAC2)

arrow Redundancy options

arrow CDM-570A: FSK communications to CSAT-5060 or KST-2000A

arrow CDM-570AL: 10 MHz reference for BUC, FSK communications and optional BUC power supply

arrow CDM-570AL: 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
CDM-570AL: 950 to 2250 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 
CDM-570AL: transmit and receive 50 Ω, > 17 dB (950 MHz to 2250 MHz) and >19 dB (1000 MHz to 1900 MHz) minimum return loss, female Type N 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)
    CDM-570A
    CDM-570AL


±1 ppm, 0º to 50ºC (32º to 122ºF)
±0.06 ppm, 0º to 50ºC (32º to 122ºF)

Output Power
    CDM-570A
    CDM-570AL


0 to –25 dBm, 0.1 dB steps 
0 to –40 dBm, 0.1 dB steps

Accuracy
    CDM-570A
    CDM-570AL


± 0.5 dB over frequency and temperature 
± 1.0 dB over frequency and temperature

Phase Noise 
    CDM-570A
    CDM-570AL


< 0.75 degrees RMS double-sided, 100 Hz to 1 MHz
< 1.2 degrees RMS double-sided, 100 Hz to 1 MHz

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
    CDM-570A
    CDM-570AL 
 


-30 to -60 dBm
-130 + 10 log symbol rate, dBm (minimum)
-90 + 10 log symbol rate, dBm (maximum)

Max Composite Level 
    CDM-570A
    CDM-570AL


+35 dBc, up to -5 dBm absolute max.
+40 dBc, up to -10 dBm absolute max.

Acquisition Range
    CDM-570A
    CDM-570AL 
 


± 1 to ± 32 kHz,1 kHz step 
± 1 to ± 32 kHz, 1 kHz step, symbol rate <= 625 ksps
± 1 to ± 200 kHz,1 kHz step, symbol rate > 625 ksps

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
(Interferer to Desired)

-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
BPSK/QPSK/OQPSK: 0.3 dB
8-QAM: 0.4 dB
8PSK: 0.5 dB
16-QAM: 0.6 dB
+10 dB power spectral density ratio
Additional 0.3 dB

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 
(internally fitted option) 
48 VDC, 150 W @ 50°C, 180 W @ 30°C 
(internally fitted option, not available with -24 VDC input)

BUC Reference

10 MHz via TX center conductor

FSK Support

Via TX center conductor with FSK BUCs

Environmental & Physical

Temperature 
    Operating
    Storage


0 to 50°C (32 to 122°F)
-25 to 85°C (-13 to 185°F)

Power Supply

100 to 240 VAC, 50/60 Hz 
-24 VDC (HW option) 
-48 VDC (HW option)

Power Consumption

CDM-570A: 29 W typical (32 W max.) 
CDM-570AL: 29 W typical (32 W max.) w/o BUC

Dimensions 
(height x width x depth)

CDM-570A: 1.75” x 19” x 13” (4.4 x 48.3 x 330 cm) 
CDM-570AL: 1.75” x 19” x 16” (4.4 x 48.3 x 40.6 cm)

Weight

CDM-570A: 5 lbs (2.3 kg) 
CDM-570AL: 7 lbs (3.2 kg) (without BUC P/S) 
CDM-570AL: 16 lbs (7.2 kg) including 150 W BUC power supply

Operations & Maintenance

Configuration and Management

Front panel 
Remote port – EIA-232 or EIA-485 (2- or 4-wire) 
SNMP with MIB II and private, modem-specific MIB 
Telnet 
Web browser (HTTP)

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) 
EN55022 (Emissions) 
EN55024 (Immunity) 
EN 61000‐3‐2 
EN 61000‐3‐3 
EN60950 (Safety)

FCC

FCC Part 15, Subpart B

arrow Enterprise Networks

arrow Offshore & Maritime Communications

arrow Mobile Backhaul

arrow Communications on-the-Move  

arrow Disaster Recovery & Emergency Communications

arrow Satellite News Gathering