Comtech EF Data CDM-740 User manual

Part Number MN-CDM740 Revision 0
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.
CD
M
-
7
4
0
Advanced Satellite Modem
Installation and Operation Manual

Errata Page 1of 4
AGILE DOC ID ER-MNCDM740.EA0 THIS DOCUMENT IS NOT SUBJECT TO REVISION/UPDATE! AGILE CO10672
Errata A
Comtech EF Data Documentation Update
Subject: Update CDM-740 Firmware Upgrade Procedure, Front Panel
Operation, and Web Server login parameters
Date: January 19, 2010
Original Manual Part
Number/Rev:
MN-CDM740 Rev 0
Errata Number/
Agile Document ID:
ER-MNCDM740.EA0
Agile CO Number: CO 10672
Comments: Affected manual / page content will be updated, as indicated below
and on the pages that follow, upon next formal manual revision.
Affected content: •Chapter 4. FLASH UPGRADING,
Update Sect. 4.2 Ethernet Upload Procedure
•Chapter 5. FRONT PANEL OPERATION,
Replace Sect. 5.4.2.5 (CONFIG:) Rx ÆData
•Chapter 6. ETHERNET MANAGEMENT,
Replace Sect. 6.5.3. User Login

Errata Page 2of 4
AGILE DOC ID ER-MNCDM740.EA0 THIS DOCUMENT IS NOT SUBJECT TO REVISION/UPDATE! AGILE CO10672
I. Chapter 4. FLASH UPGRADING
Update Sect. 4.2 Ethernet Upload Procedure (pages 4-2, 4-3)
Instructions: Steps 3, 4, and 9 in Sect. 4.2 are replaced in their entirety as follows:
o
o
3. Download the correct firmware file to this temporary folder. As shown in Figure 4-1:
1. Go online to: www.comtechefdata.com;
2. Click on: Support tab;
3. Click on: Software Downloads drop-down or hyperlink from Support page;
4. Click on: Download Flash and Software Update Files icon;
5. Click on: (Select a Product Line) Satellite Modems hyperlink;
6. Select the CDM-740 product hyperlink;
7. Select the appropriate firmware hyperlink.
About Firmware Numbers, File Versions, and Formats: The flashable files on the download
server are organized by product prefix; firmware number (verify that the correct firmware
number is known – see Step 1); revision letter, if applicable; and release version.
The downloadable for the CDM-740 base modem bulk firmware is named F0000279x_V###,
where “x” denotes the revision letter, and “###” the firmware version. The downloadable files
are stored in two formats: *.exe (self-extracting) and *.zip (compressed). Some firewalls will
not allow the downloading of *.exe files; in this case, download the *.zip file instead.
The current version firmware release is provided. If applicable, one version prior to the
current release is also available. Be sure to identify and download the desired version.
For additional help with "zipped" file types, refer to PKZIP for Windows, WinZip, or
ZipCentral help files. PKZIP for DOS is not supported due to file naming conventions.
4. Extract the files into the temporary folder on the PC. At least two files should be
extracted (where the “x” in each filename represents the firmware revision letter):
•FW-0000279x.pkg, the bulk image file;
•ReleaseNotes_FW-0000279x.pdf, the firmware release notes document.
o
o
o
o
9. Transfer the files: Type "put FW-0000279*.pkg" to begin the file transfers. It will take
a few seconds to transfer the file.

Errata Page 3of 4
AGILE DOC ID ER-MNCDM740.EA0 THIS DOCUMENT IS NOT SUBJECT TO REVISION/UPDATE! AGILE CO10672
II. Chapter 5. FRONT PANEL OPERATION
Replace Sect. 5.4.2.5 (CONFIG:) Rx ÆData (page 5-10)
Instructions: Sect. 5.4.2.5 is replaced in its entirety as follows:

Errata Page 4of 4
AGILE DOC ID ER-MNCDM740.EA0 THIS DOCUMENT IS NOT SUBJECT TO REVISION/UPDATE! AGILE CO10672
III. Chapter 6. ETHERNET MANAGEMENT
Replace Sect. 6.5.3 User Login (page 6-5)
Instructions: Sect. 6.5.3 is replaced in its entirety as follows:

Copyright © 2009 Comtech EF Data. All rights reserved. Printed in the USA.
Comtech EF Data, 2114 West 7th Street, Tempe, Arizona 85281 USA,480.333.2200, FAX: [phone]
CDM-740
Advanced Satellite Modem
Installation and Operation Manual
Part Number MN-CDM740
Revision 0
December 17, 2009

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iii
Table of Contents
TABLE OF CONTENTS ..............................................................................................................III
TABLES...................................................................................................................................... IX
FIGURES.................................................................................................................................... IX
PREFACE................................................................................................................................... XI
About this Manual .....................................................................................................................................xi
Reporting Comments or Suggestions Concerning this Manual...............................................................xi
Conventions and References.....................................................................................................................xi
Metric Conversion ...................................................................................................................................xi
Recommended Standard Designations.....................................................................................................xi
Trademarks ..............................................................................................................................................xi
Cautions and Warnings............................................................................................................................xii
Electrical Safety and Compliance............................................................................................................xii
Fuses .......................................................................................................................................................xii
Low Voltage Directive (LVD)...............................................................................................................xiii
Installation..............................................................................................................................................xiii
Environmental..........................................................................................................................................xiii
Telecommunications Terminal Equipment Directive...........................................................................xiv
CE Mark...................................................................................................................................................xiv
RoHS Compliance....................................................................................................................................xiv
EMC (Electromagnetic Compatibility) Compliance.............................................................................xiv
Warranty Policy........................................................................................................................................xv
Limitations of Warranty..........................................................................................................................xv
Exclusive Remedies...............................................................................................................................xvi
Customer Support...................................................................................................................................xvii
Online Customer Support .....................................................................................................................xvii
CHAPTER 1.INTRODUCTION .............................................................................................1–1
1.1Overview......................................................................................................................................1–1

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1.2Functional Description ...............................................................................................................1–2
1.3Features........................................................................................................................................1–4
1.3.1Physical Description .............................................................................................................1–4
1.3.2Compatibility ........................................................................................................................1–4
1.3.3Major Assemblies .................................................................................................................1–4
1.3.4Dimensional Envelope..........................................................................................................1–5
1.3.5Physical Features ..................................................................................................................1–6
1.3.5.1Front Panel........................................................................................................................1–6
1.3.6Rear Panel.............................................................................................................................1–7
1.3.7Data Interfaces ......................................................................................................................1–7
1.3.11Supporting Hardware and Software......................................................................................1–9
1.4New in this Release......................................................................................................................1–9
1.5Summary of Specifications.......................................................................................................1–10
1.5.1Transmit / Modulator..........................................................................................................1–10
1.5.2Receive / Demodulator........................................................................................................1–11
1.5.3Data Interfaces ....................................................................................................................1–12
1.5.4Data Rate Ranges................................................................................................................1–12
1.5.5Miscellaneous .....................................................................................................................1–13
1.5.6Approvals............................................................................................................................1–13
CHAPTER 2.INSTALLATION ..............................................................................................2–1
2.1Unpacking and Inspection..........................................................................................................2–1
2.2Mounting......................................................................................................................................2–2
2.2.1Optional Rear-Mounting Support Bracket Installation.........................................................2–2
CHAPTER 3.REAR PANEL CONNECTOR PINOUTS ........................................................3–1
3.1Connector Overview...................................................................................................................3–1
3.2IF Connections ............................................................................................................................3–3
3.2.1Rx IF Connectors..................................................................................................................3–3
3.2.2Tx IF Connectors ..................................................................................................................3–3
3.3Terrestrial Data Connections.....................................................................................................3–3
3.3.1GE-1 and GE-2 Ethernet Connectors, RJ-45 ........................................................................3–3
3.3.2FE (Fast Ethernet) Connector, RJ-45....................................................................................3–3
3.3.3ASI IN/OUT 1 & 2 Connectors, BNC (UNUSED) ..............................................................3–4
3.4Utility Connections......................................................................................................................3–4
3.4.1TERM Connector, RJ-12 ......................................................................................................3–4
3.4.2REDUNDANT Connector, DB-9F.......................................................................................3–4
3.4.3Remote Control Interface Connector, DB-9M......................................................................3–5
3.4.4EXT/INT REF Connector, BNC...........................................................................................3–5

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3.5Power / Ground Connections.....................................................................................................3–6
3.5.1Alternating Current Power Connector ..................................................................................3–6
3.5.2Direct Current (DC) Power Connector (Optional)................................................................3–6
3.5.3Chassis Ground Connector....................................................................................................3–6
CHAPTER 4.FLASH UPGRADING......................................................................................4–1
4.1Flash Updating via Internet.......................................................................................................4–1
4.2Ethernet FTP Upload Procedure...............................................................................................4–2
CHAPTER 5.FRONT PANEL OPERATION.........................................................................5–1
5.1Description...................................................................................................................................5–1
5.1.1Front Panel LED Indicators ..................................................................................................5–2
5.1.2Front Panel Keypad...............................................................................................................5–2
5.1.3Front Panel Vacuum Fluorescent Display (VFD).................................................................5–3
5.2Front Panel Menu.......................................................................................................................5–3
5.2.1Opening Screen.....................................................................................................................5–3
5.2.2CDM-740 Front Panel Menu Matrix ....................................................................................5–4
5.3SELECT: (Main) Menu..............................................................................................................5–5
5.4SELECT: Configuration............................................................................................................5–6
5.4.1CONFIG: Tx.........................................................................................................................5–6
5.4.1.1(CONFIG:) Tx ÆIF.........................................................................................................5–6
5.4.1.2(CONFIG:) Tx ÆFreq (Frequency).................................................................................5–7
5.4.1.3(CONFIG:) Tx ÆPower ..................................................................................................5–7
5.4.1.4(CONFIG:) Tx ÆFEC .....................................................................................................5–7
5.4.1.5(CONFIG:) Tx ÆMod (Modulation)...............................................................................5–7
5.4.1.6(CONFIG:) Tx ÆData.....................................................................................................5–8
5.4.1.7(CONFIG:) Tx ÆScrambler............................................................................................5–8
5.4.2CONFIG: Rx.........................................................................................................................5–9
5.4.2.1(CONFIG:) Rx ÆIF.........................................................................................................5–9
5.4.2.2(CONFIG:) Rx ÆFreq (Frequency)..................................................................................5–9
5.4.2.3(CONFIG:) Rx ÆFEC.....................................................................................................5–9
5.4.2.4(CONFIG:) Rx ÆDemod (Demodulation)....................................................................5–10
5.4.2.5(CONFIG:) Rx ÆData...................................................................................................5–10
5.4.2.6(CONFIG:) Rx ÆDescram(bler) (DVB-S2 only)..........................................................5–11
5.4.2.7(CONFIG:) Rx ÆPilot (DVB-S2 only).........................................................................5–11
5.4.3CONFIG: Clocks ................................................................................................................5–14
5.4.3.1(CONFIG:) Clocks ÆExt-Ref .......................................................................................5–14
5.4.3.2(CONFIG:) Clocks ÆInt-Ref-Adj.................................................................................5–14
5.4.4CONFIG: Remote...............................................................................................................5–15
5.4.4.1(CONFIG:) Remote ÆSerial .........................................................................................5–15
5.4.5CONFIG: IP........................................................................................................................5–15
5.4.5.1(CONFIG:) IP Æ(GE1 / GE2 / MGMT)........................................................................5–16
5.4.5.2(CONFIG:) IP Æ(SNMP) Read-Cmty...........................................................................5–17

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5.4.5.3(CONFIG:) IP Æ(SNMP) Write-Cmty..........................................................................5–18
5.4.5.4(CONFIG:) IP ÆSNMP ÆTrap...................................................................................5–18
5.4.6CONFIG: Misc....................................................................................................................5–18
5.5SELECT: Test...........................................................................................................................5–19
5.5.1TEST: Mode........................................................................................................................5–19
5.5.2TEST: BERT.......................................................................................................................5–19
5.5.2.1TEST: Pattern..................................................................................................................5–19
5.6SELECT: Monitor....................................................................................................................5–20
5.6.1Monitor: Live-Alarms.........................................................................................................5–20
5.6.2Monitor: Stored-Events.......................................................................................................5–21
5.6.2.1(Monitor:) Stored-Events ÆClear-All...........................................................................5–21
5.6.2.2(Monitor:) Stored-Events ÆView..................................................................................5–21
5.6.3Monitor: Rx-Params............................................................................................................5–21
5.6.4Monitor: IP-Stats.................................................................................................................5–22
5.7SELECT: Store/Ld ...................................................................................................................5–23
5.8SELECT: Utility........................................................................................................................5–24
5.8.1Utilities: Set-RTC ...............................................................................................................5–24
5.8.2Utilities: Display-Brightness...............................................................................................5–24
5.8.3Utilities: 1:1 ........................................................................................................................5–24
5.8.4Utilities: 1:N (UNUSED)....................................................................................................5–25
5.8.5Utilities: Circuit-ID.............................................................................................................5–25
5.8.6Utilities: Firmware..............................................................................................................5–26
5.8.6.1(Utilities): Firmware ÆInfo...........................................................................................5–26
5.8.6.2(Utilities): Firmware ÆSelect........................................................................................5–26
5.9SELECT: ODU..........................................................................................................................5–27
5.9.1ODU: (BUC:) BUC_LO .....................................................................................................5–27
5.9.1.1ODU: (BUC:) Power.......................................................................................................5–28
5.9.1.2ODU: (BUC:) 10M-Ref..................................................................................................5–28
5.9.1.3ODU: (BUC) Alarm........................................................................................................5–28
5.9.1.4ODU: (BUC) Monitor.....................................................................................................5–28
5.9.1.5ODU: (LNB) LNB_LO...................................................................................................5–28
5.9.1.6ODU: (LNB) 22K-Tone..................................................................................................5–29
5.9.1.7ODU: (LNB) Polarity......................................................................................................5–29
5.10SELECT: FAST........................................................................................................................5–30
5.10.1FAST: Options....................................................................................................................5–30
5.10.2FAST: Configure ................................................................................................................5–30
5.10.2.1FAST: Configure ÆWord#........................................................................................5–31
5.10.3FAST: Demo-Mode ............................................................................................................5–31
CHAPTER 6.ETHERNET MANAGEMENT ..........................................................................6–1
6.1Introduction.................................................................................................................................6–1
6.2Ethernet Management Interface Protocols...............................................................................6–1

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6.3SNMP Interface...........................................................................................................................6–1
6.3.1Management Information Base (MIB) Files.........................................................................6–2
6.3.2SNMP Community Strings ...................................................................................................6–2
6.4Telnet Interface...........................................................................................................................6–3
6.5Web Server (HTTP) Interface...................................................................................................6–4
6.5.1Web Server Introduction.......................................................................................................6–4
6.5.2Web Server Menu Tree.........................................................................................................6–4
6.5.3User Login ............................................................................................................................6–5
6.5.4Web Server Page Descriptions..............................................................................................6–6
6.5.4.1Home (Splash) Page..........................................................................................................6–6
6.5.4.2Management Pages ...........................................................................................................6–7
6.5.4.2.1Management | Main Page............................................................................................6–7
6.5.4.2.2Management | SNMP Page .........................................................................................6–9
6.5.4.2.3Management | FAST Page ........................................................................................6–10
6.5.4.2.4Management | Firmware Page...................................................................................6–11
6.5.4.2.5Management | Auto Logout Page..............................................................................6–12
6.5.4.3Network Pages ................................................................................................................6–13
6.5.4.3.1Network | FE Mgt Page.............................................................................................6–13
6.5.4.3.2Network | GE-1 and GE-2 Pages ..............................................................................6–15
6.5.4.4DEMOD (Demodulator) | Tuner-1 Page.........................................................................6–16
6.5.4.5DECAP (Decapsulator) | Tuner-1 Page ..........................................................................6–18
6.5.4.6MOD (Modulator) Page..................................................................................................6–20
6.5.4.7Statistics Pages................................................................................................................6–23
6.5.4.7.1Statistics | Summary Page.........................................................................................6–23
6.5.4.7.2Statistics | Tuner-1 Page............................................................................................6–24
6.5.4.7.3Statistics | GE-1 and GE-2 Pages..............................................................................6–25
6.5.4.7.4Statistics | Modulator Page........................................................................................6–26
6.5.4.8Monitor Page...................................................................................................................6–27
6.5.4.9Utility Page .....................................................................................................................6–28
APPENDIX A.REMOTE CONTROL .................................................................................... A–1
A.1Overview.....................................................................................................................................A–1
A.2EIA-232.......................................................................................................................................A–1
A.3Basic Protocol.............................................................................................................................A–1
A.4Packet Structure.........................................................................................................................A–2
A.4.1Start of Packet......................................................................................................................A–2
A.4.2Target Address.....................................................................................................................A–2
A.4.3Address Delimiter................................................................................................................A–2
A.4.4Instruction Code...................................................................................................................A–2
A.4.5Instruction Code Qualifier ...................................................................................................A–3
A.4.6Optional Message Arguments..............................................................................................A–4
A.4.7End of Packet.......................................................................................................................A–4
A.5Remote Commands and Queries..............................................................................................A–5

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A.5.1Tx Parameters ......................................................................................................................A–6
A.5.2Rx Parameters......................................................................................................................A–9
A.5.3Unit Parameters..................................................................................................................A–12
A.5.4Bulk Configuration Strings................................................................................................A–19
A.5.5Modem Information...........................................................................................................A–19
A.5.6Modem Performance Information......................................................................................A–21
A.5.7BUC Parameters (L-Band Device).....................................................................................A–23
APPENDIX B.FAST ACTIVATION PROCEDURE.............................................................. B–1
B.1FAST System Overview............................................................................................................. B–1
B.2FAST Activation Procedure...................................................................................................... B–2
B.2.1Serial Number...................................................................................................................... B–2
B.2.2View currently installed features ......................................................................................... B–2
B.2.3Enter Access Codes.............................................................................................................. B–2
APPENDIX C.1:1 REDUNDANCY....................................................................................... C–1
C.1Overview.....................................................................................................................................C–1
C.2Introduction................................................................................................................................C–2
C.3CDM-740 1:1 Redundancy Setup.............................................................................................C–3
C.3.1User (IF) ÆCRS-175L ÆCDM-740 ÆUser (Data Interface) Cabling............................ C–3
C.3.1.1User ÆCRS-175L ÆCDM-740 IF and Control Cabling .............................................. C–4
C.3.1.2CDM-740 ÆUser Data Interface Cabling Connections ................................................. C–5
C.3.2CDM-740 1:1 Redundancy Operations via the CDM-740................................................... C–6
C.3.2.1Redundancy Operation via the Front Panel ..................................................................... C–6
C.3.2.2Redundancy Operation via Telnet Remote Control......................................................... C–7
C.3.2.3Redundancy Operation via the Web Server Interface...................................................... C–8

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Tables
Table 3-1. CDM-740 Rear Panel Connectors...........................................................................................3–2
Table 3-2. TERM Connector Pin Assignments .......................................................................................3–4
Table 3-3. REMOTE Connector Pinouts.................................................................................................3–4
Table 3-4. Remote Control Connector Pinouts........................................................................................3–5
Table 5-1. Tx Symbol Rate / Data Rate Ranges – TPC............................................................................5–8
Table 5-2. Rx Symbol Rate / Data Rate Ranges – DVB-S.....................................................................5–12
Table 5-3. Rx Symbol Rate / Data Rate Range – DVB-S2 Normal FECFrame = 64,800 Bits ..............5–12
Table 5-4. Rx Symbol Rate / Data Rate Range – DVB-S2 Short FECFrame = 16,200 Bits..................5–13
Figures
Figure 1-1. CDM-740 Satellite Modem....................................................................................................1–1
Figure 1-2. CDM-740 Network Topology................................................................................................1–2
Figure 1-3. CDM-740 Dimensional Envelope..........................................................................................1–5
Figure 1-4. CDM-740 – Front Panel View...............................................................................................1–6
Figure 1-5. CDM-740 – Rear Panel View ................................................................................................1–7
Figure 2-1. Optional Rear-Mounting Support Bracket Installation..........................................................2–3
Figure 3-1. CDM-740 – Rear Panel View ................................................................................................3–1
Figure 4-1. Flash Update via Internet .......................................................................................................4–1
Figure 5-1. CDM-740 – Front Panel View...............................................................................................5–1
Figure 6-1. CDM-740 Advanced Satellite Modem Home (Splash) page.................................................6–6
Figure 6-2. Management | Main page.......................................................................................................6–7
Figure 6-3. Management | SNMP page.....................................................................................................6–9
Figure 6-4. Management | FAST page....................................................................................................6–10
Figure 6-5. Management | Firmware page..............................................................................................6–11
Figure 6-6. Management | Auto Logout page.........................................................................................6–12
Figure 6-7. Network | FE Management page..........................................................................................6–13
Figure 6-8. Network | GE-1 and GE-2 pages..........................................................................................6–15
Figure 6-9. DEMOD | Tuner-1 page.......................................................................................................6–16
Figure 6-10. Decapsulator | Tuner-1 page...............................................................................................6–18
Figure 6-11. Modulator page ..................................................................................................................6–20
Figure 6-12. Statistics | Summary page...................................................................................................6–23
Figure 6-13. Statistics | Tuner-1 page.....................................................................................................6–24
Figure 6-14. Statistics | GE-1 and GE-2 pages .......................................................................................6–25
Figure 6-15. Statistics | Modulator page .................................................................................................6–26
Figure 6-16. Monitor page......................................................................................................................6–27
Figure 6-17. Utility page.........................................................................................................................6–28
Figure C-1. CRS-175L L-Band 1:1 Redundancy Switch......................................................................... C–1
Figure C-2. CRS-175L – 1:1 Redundancy (L-Band Simplex or Full Duplex Operation) ....................... C–2
Figure C-3. User ÆCRS-175L ÆCDM-740 IF and Control Cabling Example.................................... C–4
Figure C-4. User ÆCRS-175L ÆCDM-740 IF and Control Cabling Example.................................... C–5
Figure C-5. CDM-740 – Front Panel View.............................................................................................. C–6
Figure C-6. CDM-740 Web Server Interface Utility page....................................................................... C–8

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xi
PREFACE
About this Manual
This manual provides installation and operation information for the Comtech EF Data CDM-740
Advanced Satellite Modem. This is a technical document intended for earth station engineers,
technicians, and operators responsible for the operation and maintenance of the CDM-740.
Reporting Comments or Suggestions Concerning this Manual
Comments and suggestions regarding the content and design of this manual will be appreciated.
To submit comments, please contact the Comtech EF Data Technical Publications Department:
[email protected]
Conventions and References
Metric Conversion
Metric conversion information is located on the inside back cover of this manual. This information
is provided to assist the operator in cross-referencing non-Metric to Metric conversions.
Recommended Standard Designations
Recommended Standard (RS) Designations have been superseded by the new designation of the
Electronic Industries Association (EIA). References to the old designations are shown only when
depicting actual text displayed on the screen of the unit (RS-232, RS-485, etc.). All other references
in the manual will be shown with the EIA designations.
Trademarks
Product names mentioned in this manual may be trademarks or registered trademarks of their
respective companies and are hereby acknowledged.

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IMPORTANT
The user should carefully observe the following information:
Cautions and Warnings
IMPORTANT
IMPORTANT or NOTE indicates a statement associated with the task being
performed or information critical for proper equipment function.
CAUTION
CAUTION indicates a hazardous situation that, if not avoided, may result in
minor or moderate injury. CAUTION may also be used to indicate other unsafe
practices or risks of property damage.
WARNING
WARNING indicates a potentially hazardous situation that, if not avoided, could
result in death or serious injury.
Electrical Safety and Compliance
The CDM-740 has been shown to comply with the EN 60950 Safety of Information
Technology Equipment, Including Electrical Business Machines safety standard.
The equipment is rated for operation over the range 100-240 volts AC or, appropriately equipped,
36-60 volts DC. It has a maximum power consumption of 300 watts.
Fuses
CAUTION
FOR CONTINUED OPERATOR SAFETY, ALWAYS REPLACE THE FUSES WITH
THE CORRECT TYPE AND RATING.
The CDM-740 is fitted with two fuses – one each for line and neutral connections. These fuses
are contained within the body of the IEC power inlet connectors, behind a hinged plastic flap.
Observe the following:
•For 230/115 volt AC operation, use T5A 20mm slow-blow fuses.
•For 48 volt DC operation, use a T8A 20mm blow-blow fuses.
Examples of
Multi-Hazard Formats

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Low Voltage Directive (LVD)
The following information is applicable for the European Low Voltage Directive (2006/95/EC):
Symbol Description
<HAR> Type of power cord required for use in the European
Community.
!
CAUTION: Double-pole/Neutral Fusing
ACHTUNG: Zweipolige bzw. Neutralleiter-Sicherung
International Symbols
Symbol Definition Symbol Definition
Alternating
Current Protective
Earth
Fuse Chassis
Ground
IMPORTANT
For additional symbols, refer to Cautions and Warnings listed earlier in this
Preface.
Installation
The installation and connection to the line supply must be made in compliance to local or national
wiring codes and regulations.
The CDM-740 is designed for connection to a power system that has separate ground, line and
neutral conductors. The equipment is not designed for connection to power system that has no
direct connection to ground.
The CDM-740 is shipped with a line inlet cable suitable for use in the country of operation. If it is
necessary to replace this cable, ensure the replacement has an equivalent specification. Examples
of acceptable ratings for the cable include HAR, BASEC and HOXXX-X. Examples of
acceptable connector ratings include VDE, NF-USE, UL, CSA, OVE, CEBEC, NEMKO,
DEMKO, BS1636A, BSI, SETI, IMQ, KEMA-KEUR and SEV.
Environmental
The CDM-740 must not be operated in an environment where the unit is exposed to extremes of
temperature outside the ambient range 0° to 50°C (32° to 122°F); precipitation, condensation, or
humid atmospheres above 95% relative humidity; altitudes (un-pressurized) greater than 2000
metres; excessive dust or vibration; flammable gases; or corrosive or explosive atmospheres.
Operation in vehicles or other transportable installations that are equipped to provide a stable
environment is permitted. If such vehicles do not provide a stable environment, safety of the
equipment to EN60950 may not be guaranteed.

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Telecommunications Terminal Equipment Directive
In accordance with the Telecommunications Terminal Equipment Directive 91/263/EEC, this
equipment should not be directly connected to the Public Telecommunications Network.
CE Mark
Comtech EF Data declares that the CDM-740 modem meets the necessary requirements for the
CE Mark.
RoHS Compliance
This unit satisfies (with exemptions) the requirements specified in the European Union Directive on
the Restriction of Hazardous Substances, Directive 2002/95/EC, (EU RoHS).
EMC (Electromagnetic Compatibility) Compliance
In accordance with European Directive 89/336/EEC, the CDM-740 Modem has been shown, by
independent testing, to comply with the following standards:
Emissions: EN 55022 Class B - Limits and methods of measurement of radio
interference characteristics of Information Technology Equipment.
(Also tested to FCC Part 15 Class B)
Immunity: EN 50082 Part 1 - Generic immunity standard, Part 1: Domestic,
commercial and light industrial environment.
Additionally, the CDM-740 has been shown to comply with the following standards:
EN 61000-3-2 Harmonic Currents Emission
EN 61000-3-3 Voltage Fluctuations and Flicker
EN 61000-4-2 ESD Immunity
EN 61000-4-4 EFT Burst Immunity
EN 61000-4-5 Surge Immunity
EN 61000-4-6 RF Conducted Immunity
EN 61000-4-8 Power frequency Magnetic Field Immunity
EN 61000-4-9 Pulse Magnetic Field Immunity
EN 61000-4-11 Voltage Dips, Interruptions, and Variations Immunity
EN 61000-4-13 Immunity to Harmonics
IMPORTANT
To ensure that the Modem continues to comply with these standards, observe
the following instructions:
•Connections to the transmit and receive IF ports (BNC female connectors) should be
made using a good quality coaxial cable - for example RG58/U (50Ωor RG59/U (75Ω).