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CDM-625A
User Manual
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Comtech EF Data CDM-625A User Manual

CDM-625
Advanced Satellite Modem (18 kbps – 25 Mbps)
Installation and Operation Manual
For Firmware Version 1.3.1 or higher
IMPORTANT NOTE: The information contained in this document supersedes all previously published information regarding this product. Product specifications are subject to change without prior notice.
Part Number MN-CDM625A / CD-MN-CDM625A Revision 3
CDM-
Advanced Satel lite Modem (18 kbps – 25 Mbps)
Installation and Operation Manual
For Firmware Version 1.3.1 or higher
Comtech EF Data, 2114 West 7th Street, Tem pe, Arizona 85 281 USA, 480.3 33.2200, FAX: 480.333.2161
Part Number MN-CDM625A / CD-MN-CDM625A
Revision 3
Copyright © 2014 Comtech EF Data. Al l rights reserv ed. Printed in the USA.
BLANK PAGE
ii

Errata A for MN-CDM625A Rev 3

Subject:
Errata Part Number:
ER-CDM625A-EA3 Rev - (Errata documents are not revised)
Comtech EF Data Documentation Update
Revise Sect 1.4.2 Demodulator - VersaFEC-2 Long Block/Short Block Data Rates
PLM CO Number: C-0033153
Comments:
Update manual MN-CDM625A REV 3 – Replace Data Rate specifications tabulation in Sect. 1.4.2 Demodulator CODEC BER BPSK / QPSK / 8-ARY / 16-ARY / 32-ARY (pp. 1-19 and 1-20)
for VersaFEC-2 Long Block and VersaFEC-2 Short Block
ER-CDM625A-EA3 Rev - PLM C-0033153
VersaFEC-2 LONG BLOCK:
VersaFEC-2 Long Block
than the desired carrier)
Rate 0.489 BPSK
VersaFEC-2 Long Block
than the desired carrier)
Rate 0.489 QPSK
Rate 0.537 QPSK
Rate 0.586 QPSK
Rate 0.611 QPSK
Rate 0.635 QPSK
Rate 0.660 QPSK
Rate 0.684 QPSK
Rate 0.733 QPSK
VersaFEC-2 Long Block
Rate 0.521 8-ARY
Rate 0.537 8-ARY
Rate 0.562 8-ARY
Rate 0.586 8-ARY
BER=10-8
Rate 0.611 8-ARY
3.7 dB (3.4 dB)
Rate 0.635 8-ARY
3.7 dB (3.4 dB)
Rate 0.660 8-ARY
3.8 dB (3.5 dB)
Rate 0.684 8-ARY
4.1 dB (3.8 dB)
Rate 0.708 8-ARY
Rate 0.733 8-ARY
VersaFEC-2 Long Block
BER=10-8
Rate 0.586 16-ARY
4.7 dB (4.4 dB)
Rate 0.611 16-ARY
5.0 dB (4.7 dB)
Rate 0.635 16-ARY
5.2 dB (4.9 dB)
Rate 0.660 16-ARY
5.3 dB (5.0 dB)
BER=10-8
Rate 0.684 16-ARY
5.5 dB (5.2 dB)
Rate 0.708 16-ARY
5.8 dB (5.5 dB)
Rate 0.733 16-ARY
6.1 dB (5.8 dB)
Rate 0.757 16-ARY
6.4 dB (6.1 dB)
BER=10-8
Rate 0.782 16-ARY
6.7 dB (6.4 dB)
VersaFEC-2 Long Block
BER=10-8
Rate 0.660 32-ARY
7.1 dB (6.8 dB)
Rate 0.684 32-ARY
7.5 dB (7.2 dB)
Rate 0.708 32-ARY
7.7 dB (7.4 dB)
Rate 0.733 32-ARY
8.0 dB (7.7 dB)
Rate 0.757 32-ARY
Rate 0.782 32-ARY
Rate 0.801 32-ARY
Rate 0.831 32-ARY
BER=10-8
Rate 0.855 32-ARY
10.0 dB (9.7 dB)
Rate 0.879 32-ARY
10.6 dB (10.3 dB)
Type For BER=10-X Rate – Guaranteed Eb/No (typical value in parentheses)
Errata
CODEC BER BPSK (With two adjacent carriers, each 7 dB higher
CODEC BER QPSK (With two adjacent carriers, each 7 dB higher
CODEC BER 8-ARY (With two adjacent carriers, each 7 dB higher than the desired carrier)
CODEC BER 16-ARY (With two adjacent carriers, each 7 dB higher than the desired carrier)
BER=10-4 BER=10
BER=10-4 BER=10
BER=10-4 BER=10
BER=10-4 BER=10
BER=10-4
BER=10-4 BER=10
BER=10-4
BER=10-4
BER=10-4
-8
-8
-8
-8
-8
1.8 dB (1.5 dB)
2.1 dB (1.8 dB)
1.7 dB (1.4 dB)
1.9 dB (1.6 dB)
2.3 dB (2.0 dB)
2.5 dB (2.2 dB)
3.2 dB (2.9 dB)
3.5 dB (3.2 dB)
3.4 dB (3.1 dB)
4.0 dB (3.7 dB)
4.2 dB (3.9 dB)
4.4 dB (4.1 dB)
5.3 dB (5.0 dB)
6.5 dB (6.2 dB)
1.8 dB (1.5 dB)
2.0 dB (1.7 dB)
2.4 dB (2.1 dB)
2.6 dB (2.3 dB)
3.2 dB (2.9 dB)
3.6 dB (3.3 dB)
3.5 dB (3.2 dB)
4.3 dB (4.0 dB)
4.4 dB (4.1 dB)
4.7 dB (4.4 dB)
5.6 dB (5.3 dB)
2.0 dB (1.7 dB)
2.2 dB (1.9 dB)
2.4 dB (2.1 dB)
2.6 dB (2.3 dB)
3.3 dB (3.0 dB)
3.6 dB (3.6 dB)
3.7 dB (3.4 dB)
4.9 dB (4.6 dB)
5.9 dB (5.6 dB)
2.1 dB (1.8 dB)
2.2 dB (1.9 dB)
2.8 dB (2.5 dB)
3.0 dB (2.7 dB)
3.3 dB (3.0 dB)
3.6 dB (3.6 dB)
3.9 dB (3.6 dB)
5.1 dB (4.8 dB)
6.2 dB (5.9 dB)
CODEC BER 32-ARY (With two adjacent carriers, each 7 dB higher than the desired carrier)
BER=10-4
BER=10-4 BER=10
BER=10-4
6.8 dB (6.5 dB)
-8
8.0 dB (7.7 dB)
8.2 dB (7.9 dB)
9.8 dB (9.5 dB)
7.2 dB (6.9 dB)
8.4 dB (8.1 dB)
8.6 dB (8.3 dB)
10.4 dB (10.1 dB)
7.4 dB (7.1 dB)
8.8 dB (8.5 dB)
9.0 dB (8.7 dB)
7.7 dB (7.4 dB)
9.1 dB (8.8 dB)
9.3 dB (9.0 dB)
ER-CDM625A-EA3 Rev - PLM C-0033153
VersaFEC-2 SHORT BLOCK:
VersaFEC-2 Short Block
than the desired carrier)
Rate 0.489 BPSK
VersaFEC-2 Short Block
than the desired carrier)
Rate 0.489 QPSK
Rate 0.537 QPSK
Rate 0.586 QPSK
Rate 0.611 QPSK
Rate 0.635 QPSK
Rate 0.660 QPSK
Rate 0.684 QPSK
Rate 0.733 QPSK
VersaFEC-2 Short Block
Rate 0.521 8-ARY
Rate 0.537 8-ARY
Rate 0.562 8-ARY
Rate 0.586 8-ARY
BER=10-8
Rate 0.611 8-ARY
4.3 dB (4.0 dB)
Rate 0.635 8-ARY
4.4 dB (4.1 dB)
Rate 0.660 8-ARY
4.5 dB (4.2 dB)
Rate 0.684 8-ARY
4.7 dB (4.4 dB)
Rate 0.708 8-ARY
Rate 0.733 8-ARY
VersaFEC-2 Short Block
BER=10-8
Rate 0.586 16-ARY
5.3 dB (5.0 dB)
Rate 0.611 16-ARY
5.4 dB (5.1 dB)
Rate 0.635 16-ARY
5.6 dB (5.3 dB)
Rate 0.660 16-ARY
5.8 dB (5.5 dB)
BER=10-8
Rate 0.684 16-ARY
6.2 dB (5.9 dB)
Rate 0.708 16-ARY
6.5 dB (6.2 dB)
Rate 0.733 16-ARY
6.6 dB (6.3 dB)
Rate 0.757 16-ARY
7.1 dB (6.8 dB)
BER=10-8
Rate 0.782 16-ARY
7.5 dB (7.2 dB)
VersaFEC-2 Short Block
than the desired carrier)
BER=10-8
Rate 0.660 32-ARY
7.9 dB (7.6 dB)
Rate 0.684 32-ARY
8.1 dB (7.8 dB)
Rate 0.708 32-ARY
8.2 dB (7.9 dB)
Rate 0.733 32-ARY
8.7 dB (8.4 dB)
Rate 0.757 32-ARY
Rate 0.782 32-ARY
Rate 0.801 32-ARY
Rate 0.831 32-ARY
Type For BER=10-X Rate – Guaranteed Eb/No (typical value in parentheses)
Errata
CODEC BER BPSK (With two adjacent carriers, each 7 dB higher
CODEC BER QPSK (With two adjacent carriers, each 7 dB higher
CODEC BER 8-ARY (With two adjacent carriers, each 7 dB higher than the desired carrier)
CODEC BER 16-ARY (With two adjacent carriers, each 7 dB higher than the desired carrier)
BER=10-4 BER=10
BER=10-4 BER=10
BER=10-4 BER=10
BER=10-4 BER=10
BER=10-4
BER=10-4 BER=10
BER=10-4
BER=10-4
BER=10-4
-8
-8
-8
-8
-8
2.6 dB (2.3 dB)
3.2 dB (2.9 dB)
2.3 dB (1.4 dB)
2.7 dB (1.6 dB)
2.8 dB (2.5 dB)
3.2 dB (2.9 dB)
3.5 dB (3.2 dB)
4.0 dB (3.7 dB)
3.9 dB (3.6 dB)
4.5 dB (4.2 dB)
4.8 dB (4.5 dB)
4.8 dB (4.5 dB)
5.7 dB (5.4 dB)
7.0 dB (6.7 dB)
2.4 dB (2.1 dB)
2.0 dB (1.7 dB)
2.9 dB (2.6 dB)
3.3 dB (3.0 dB)
3.5 dB (3.2 dB)
4.1 dB (3.8 dB)
3.9 dB (3.6 dB)
4.8 dB (4.5 dB)
5.2 dB (4.9 dB)
5.0 dB (4.7 dB)
6.1 dB (5.8 dB)
2.5 dB (2.2 dB)
3.0 dB (2.7 dB)
3.0 dB (2.7 dB)
3.4 dB (3.1 dB)
3.6 dB (3.6 dB)
4.2 dB (3.9 dB)
4.1 dB (3.8 dB)
5.3 dB (5.0 dB)
6.2 dB (5.9 dB)
2.6 dB (2.3 dB)
3.1 dB (2.8 dB)
3.4 dB (3.1 dB)
3.8 dB (3.5 dB)
3.7 dB (3.4 dB)
4.2 dB (3.9 dB)
4.4 dB (4.1 dB)
5.5 dB (5.2 dB)
6.7 dB (6.4 dB)
CODEC BER 32-ARY (With two adjacent carriers, each 7 dB higher
BER=10-4
BER=10-4 BER=10
7.3 dB (7.0 dB)
-8
8.4 dB (8.1 dB)
8.9 dB (8.6 dB)
7.5 dB (7.2 dB)
8.7 dB (8.4 dB)
9.2 dB (8.9 dB)
7.7 dB (7.4 dB)
9.1 dB (8.8 dB)
9.5 dB (9.2 dB)
8.2 dB (7.9 dB)
9.5 dB (9.2 dB)
9.9 dB (9.6 dB)
ER-CDM625A-EA3 Rev - PLM C-0033153
Errata
BLANK PAGE
ER-CDM625A-EA3 Rev - PLM C-0033153
Errata B for MN-CDM625A Rev 3
Comtech EF Data Documentation Update
Subject: ReplaceSects.3.2.2.2.1and3.2.2.2.2inChapter3
ErrataPartNumber: ER‐CDM625A‐EB3Rev‐(Erratadocumentsarenotrevised)
PLMCONumber: C‐0033236
Comments: UpdatemanualMN‐CDM625AREV3–Chapter3.REARPANELCONNECTORSand
PINOUTS: 
Onpage3‐9,replaceSects.3.2.2.2.1BalancedG.703(DB‐9F)and3.2.2.2.2AuxG.703 (DB‐9F)withthecont

entofthiserrata.
ER-CDM625A-EB3 Rev - PLM C-0033236
Errata
 
ER-CDM625A-EB3 Rev - PLM C-0033236

TABLE OF CONTENTS

TABLE OF CONTENTS ............................................................................................................III
TABLES ............................................................................................................................... XXIII
FIGURES ............................................................................................................................. XXIV
PREFACE ............................................................................................................................ XXIX
About this Manual ........................................................................................................................ xxix
Conventions and References ......................................................................................................... xxix
Patents and Trademarks ............................................................................................................................................ xxix
Warnings, Cautions, and Notes ................................................................................................................................. xxix
Recommended Standard Designations ..................................................................................................................... xxx
Safety and Compliance ................................................................................................................... xxx
Electrical Safety and Compliance ............................................................................................................................... xxx
Grounding ..................................................................................................................................................................... xxx
Electrical Installation ................................................................................................................................................... xxxi
Battery ..................................................................................................................................................................... xxxi
Fuses ..................................................................................................................................................................... xxxi
Operating Environment ............................................................................................................................................. xxxii
European Union Radio Equipment and Telecommunications Terminal Equipment (R&TTE) Directive
(1999/5/EC) and EN 301 489-1 ................................................................................................................................. xxxii
European Union Electromagnetic Compatibility (EMC) Directive (2004/108/EC) ......................................... xxxii
European Union Low Voltage Directive (LVD) (2006/95/EC) .......................................................................... xxxiii
European Union RoHS Directive (2002/95/EC) ................................................................................................. xxxiii
European Union Telecommunications Terminal Equipment Directive (91/263/EEC) ................................. xxxiii
CE Mark .............................................................................................................................................................. xxxiv
Product Support ........................................................................................................................... xxxiv
Comtech EF Data Headquarters .................................................................................................... xxxiv
Warranty Policy ........................................................................................................................... xxxiv
Limitations of Warranty ............................................................................................................................................. xxxv
Exclusive Remedies .................................................................................................................................................... xxxv
CHAPTER 1. INTRODUCTION ............................................................................................ 1–1
1.1 Overview ............................................................................................................................ 1–1
1.2 Functional Description ........................................................................................................ 1–3
iii
CDM-625A Advanced Satellite Modem MN-CDM625A Table of Contents Revision 3
1.3 Features ............................................................................................................................. 1–4
1.3.1 Physical Description .................................................................................................................................. 1–4
1.3.2 Modem Compatibility .............................................................................................................................. 1–4
1.3.3 Verification ................................................................................................................................................. 1–4
1.3.4 Updating Modem Firmware .................................................................................................................... 1–4
1.3.5 Standard Data Interfaces ......................................................................................................................... 1–5
1.3.6 Optional Hardware and Accessories ....................................................................................................... 1–5
1.3.7 Fully Accessible System Topology (FAST) ............................................................................................... 1–7
1.3.8 Supporting Hardware and Software ....................................................................................................... 1–9
1.3.9 Physical Features ..................................................................................................................................... 1–10
1.3.9.1 Dimensional Envelope ....................................................................................................................... 1–10
1.3.9.2 Front Panel Features .......................................................................................................................... 1–11
1.3.9.3 Rear Panel Features ........................................................................................................................... 1–12
1.4 Summary of Specifications ................................................................................................ 1–13
1.4.1 Modulator ................................................................................................................................................ 1–13
1.4.2 Demodulator ........................................................................................................................................... 1–16
1.4.3 Data Interfaces ........................................................................................................................................ 1–22
1.4.4 Automatic Uplink Power Control (AUPC) ............................................................................................. 1–22
1.4.5 DoubleTalk
®
Carrier- in-Carrier® (CnC) ................................................................................................... 1–23
1.4.6 Framing Summary ................................................................................................................................... 1–24
1.4.7 Data Rate Ranges .................................................................................................................................... 1–25
1.4.8 VersaFEC Adaptive Coding and Modulation (ACM) ............................................................................ 1–30
1.4.8.1 VersaFEC ACM .................................................................................................................................... 1–30
1.4.8.2 VersaFEC-2 ACM ................................................................................................................................. 1–31
1.4.9 Miscellaneous .......................................................................................................................................... 1–34
1.4.10 Approvals ................................................................................................................................................. 1–34
CHAPTER 2. INSTA
LLATION ............................................................................................. 2–1
2.1 Unpack and Inspect the Shipment ....................................................................................... 2–1
2.2 Install the Modem Into a Rack Enclosure ............................................................................. 2–2
2.2.1 Install the Optional Rear-Mounting Support Brackets Kits .................................................................. 2–4
2.3 Configure the Modem ......................................................................................................... 2–5
2.4 Verify Modem Operation .................................................................................................... 2–5
2.5 Connect the External Cables ................................................................................................ 2–5
CHAPTER 3. REAR PANEL CONNECTORS AND PINOUTS ............................................ 3–1
3.1 Cabling Connection Types ................................................................................................... 3–1
3.1.1 Coaxial Cable Connections ....................................................................................................................... 3–1
3.1.1.1 Type ‘BNC’ ............................................................................................................................................. 3–2
3.1.1.2 Type ‘TNC’ ............................................................................................................................................. 3–2
3.1.1.3 Type ‘N’ .................................................................................................................................................. 3–2
iv
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