Advantech L-Band Satellite Modulator User manual

SBM75e Series Modulator
L-Band Satellite Modulator
32 k – 45 M Symbol
BPSK/QPSK /8PSK/16APSK/32APSK
Installation and Operation Manual
Version 1.1
March 2009
Copyright © 2008 AdvantechAMT. All rights reserved.
AP.TP-xxxx.1

Preliminary Pages
Preface
Thank you for purchasing a Modulator from Advantech AMT. These products build on the success
of the SL/QD series, the industry’s first L-band digital satellite modems. Advantech Advanced
Microwave Technology is an international company specializing in the development of satellite
communication systems.
The following information provides the document part number, revision, the copyright notices,
along with the pertinent FCC, English, German, and French compliance, and the serviceability of
the Modulator.
Document Revision
Revision Date Content/Modifications
1.0 November 2008 First Issue.
1.1 March 2009 Added all ACM/VCM content
ii SBM75e Series Modulator Installation and Operation Manual

Preliminary Pages
Copyright Notice
Copyright © 2004-2008 AdvantechAMT. All rights reserved. This manual may not be reproduced or
disclosed in whole or in part by any means without the written consent of AdvantechAMT, Inc.
Customer Support
The staff at Advantech AMT is committed to producing the highest quality products and may be
contacted for product service, support and assistance at the following locations:
Head Office
AdvantechAMT
657 Orly Avenue
Dorval, Quebec
H9P 1G1
Tel: [phone]
Fax: [phone]
Email : [e-mail]
The following offices also provide technical support for the modems and other RF products:
U.S. Office European Office
AdvantechAMT U.S., Inc. AdvantechAMT Europe Ltd.
4710 E. Elwood Street 39 Edison Road
Suite 14 St. Ives, Huntingdon
Phoenix, AZ, 85040 Cambridgeshire, PE27 3LF
Tel: [phone] Tel: [phone]
Fax: [phone] Fax: [phone]
You can also visit our website at http://www.advantechamt.com
SBM75e Series Modulator Installation and Operation Manual iii

Preliminary Pages
Warranty and Service
Advantech AMT warrants to the Purchaser that the Products and any Repaired Products (Repairs) will
be free from defects in material and workmanship for a period of two years from the date of shipment
to the Purchaser.
Advantech AMT’s obligation under this warranty is limited to replacing or repairing, at ADVANTECH
AMT’s option, Products or Repairs found by Advantech AMT to be defective within the warranty
period. All such replacements and repairs shall be performed at facilities designated by ADVANTECH
AMT and shall be performed only after the customer has received a Return Material Authorization
(RMA) number from Advantech AMT and has returned the Product to Advantech AMT, shipping and
insurance prepaid by Purchaser.
The returned Product must be accompanied by the customer's name, address and telephone
number, the model and serial number of the Product, a statement of the purchase date and a
detailed description of the problem. Products and Repairs returned by Purchaser shall be repaired by
ADVANTECH AMT using new or refurbished parts and shall be returned to Purchaser by ADVANTECH
AMT, shipping prepaid by ADVANTECH AMT.
This warranty shall immediately become null and void if, in ADVANTECH AMT’s sole judgement, the
Product has been subject to unauthorised modification, misuse, abuse, neglect, accident, improper
installation or application, alteration or neglect in use, storage, transportation or handling, or if the
serial number and/or other Product markings have been removed, defaced or altered.
ADVANTECH AMT may, at its discretion, perform out-of-warranty repairs at ADVANTECH AMT facilities in
exchange of customary charges, or offer a written agreement extending the terms of this warranty at
a price stated in such agreement. All repairs performed out of warranty or pursuant to an extended
warranty agreement shall be subject to all of the applicable limitations and procedures of this
Agreement.
The above warranties are in lieu of all other warranties, expressed, implied, or statutory or arising by
custom of trade usage, including any warranty of merchantability of fitness for any unique, special or
express purpose, and of all other obligations of liabilities whether in contract, tort or otherwise
including, without limitation, liability for damages (whether general or special, direct or indirect,
consequential, incidental, exemplary) or any claim for the loss of profits or business or for damage to
goodwill.
Extended Warranty Options
Please contact Customer Service or your reseller for information on optional extended
warranties.
Service
To return a Product for service or repair, obtain an RMA number from ADVANTECH AMT’s
Customer Service Department.
The following information will be requested:
Customer name, address, telephone number
Model number
Serial number
Detailed description of problem
All customer-returned units must be shipped to ADVANTECH AMT freight prepaid, in the original
carton or equivalent. ADVANTECH AMT is not responsible for damage in transit.
ADVANTECH AMT will accept only completely assembled units for repair.
iv SBM75e Series Modulator Installation and Operation Manual

Preliminary Pages
Safety Notices
Radio Frequency (RF) Interference
This equipment generates, uses and can radiate radio frequency energy, and, if not installed in
accordance with the instructions contained herein, may cause interference to radio communications.
It has been tested and found to comply with the limits for a Class A computing device pursuant to
Subpart J of Part 15 of the Federal Communications Commission rules, which are designed to provide
reasonable protection against such interference, when operating in a commercial environment.
Operation of this equipment in a residential area is likely to cause interference. In this case, the user is
required to take whatever measures are necessary to correct the interference at the user’s expense.
If radio frequency interference is encountered after the installation of this equipment, corrective
measures are required to reduce the interference. Information on recommended measures can be
obtained from the manufacturer.
United Kingdom
WARNING
1. TO ENSURE ADEQUATE COOLING OF THE EQUIPMENT, A 2.0-INCH UNOBSTRUCTED SPACE MUST
BE PROVIDED AROUND ALL SIDES OF THE UNIT.
2. THE AC POWER SOCKET SHALL BE INSTALLED NEAR THE EQUIPMENT AND SHALL BE EASILY
ACCESSIBLE.
3. REMOVE POWER PLUG FROM THE POWER SOCKET BEFORE PERFORMING ANY SERVICE WORK
ON THE UNIT.
4. ONLY FACTORY AUTHORIZED SERVICE PERSONNEL SHOULD PERFORM SERVICE ON THIS UNIT.
FAILURE TO OBSERVE THIS WARNING CAN RESULT IN MALFUNCTION TO THE UNIT AS WELL AS
ELECTROCUTION TO PERSONNEL.
France
AVERTISSEMENT
1. AFIN DE NE PAS NUIRE AU PROCESSUS DE REFROIDISSEMENT, IL EST NÉCESSAIRE DE LAISSER
UN ESPACE D’ENVIRON 5 CM DE CHAQUE CÔTÉ DE L’APPAREIL.
2. PLACEZ L’APPAREIL PRÈS D’UNE PRISE DE COURANT FACILEMENT ACCESSIBLE.
3. DÉBRANCHEZ L’APPAREIL AVANT DE L’OUVRIR.
4. CET APPAREIL NE PEUT ÊTRE EXAMINÉ OU RÉPARÉ QUE PAR UN EMPLOYÉ AUTORISÉ DU
FABRICANT. SI CETTE CONSIGNE N’EST PAS RESPECTÉE, IL Y A RISQUE DE PANNE ET/OU
D’ÉLECTROCUTION.
Germany
VORSICH
1. UM DIE KÜHLUNG DES GERÄTES NICHT ZU BEEINTRÄCHTIGEN, IST ES NOTWENDIG, AN ALLEN
SEITEN DES GERÄTES CA. 5 CM RAUM ZU LASSEN.
2. STELLEN SIE DAS GERÄT IN DER NÄHE EINES GEERDETEN SCHUTZKONTAKTSTECKERS SO AUF,
DASS DER STECKER LEICHT ERREICHBAR UND ZUGÄNGLICH IST.
3. VORM ÖFFNEN DES GERÄTES MUSS DER NETZSTECKER VOM STROMNETZ GETRENNT WERDEN.
4. DIESES GERÄT DARF NUR DURCH DAS BEVOLLMÄCHTIGTE KUNDENDIENSTPERSONAL DER
FABRIK INSTANDGEHALTEN WERDEN. DIE NICHTBEACHTUNG DIESER VORSCHRIFT KANN ZU
FEHLFUNKTIONEN DES GERÄTES FÜHREN UND DAS PERSONAL DURCH STROMSCHLÄGE
GEFÄHRDEN.
SBM75e Series Modulator Installation and Operation Manual v

Preliminary Pages
vi SBM75e Series Modulator Installation and Operation Manual
Contents
Chapter 1 Getting Started
Describes the function of the equipment and its purpose within the system. It also provides a
guided tour of the base unit front and rear panel controls, indicators and connectors.
Chapter 2 Installation
Details the procedures for installing the equipment, including important safety information,
details the base unit connectors and cables.
Chapter 3 Front Panel Monitoring & Control
Describes how to configure the unit using the front panel display.
Chapter 4 Web GUI Monitoring & Control
Describes how to configure the unit using the Web Graphical User Interface.
Appendix A Technical Specification
Details the technical specification for the equipment, including performance, signals, power,
physical, environmental and standards compliance.
Appendix B Glossary
Provides a description of the abbreviations ands terms used in this manual.

CHAPTER 1: Getting Started
List of Contents
1.1 Scope of this Manual ............................................... 1-2
1.1.1 Who Should Use This Manual................................... 1-2
1.1.2 Version Information................................................... 1-2
1.1.3 Equipment Covered by this Manual...................... 1-2
1.1.4 RF/IF Interface Options............................................. 1-2
1.1.4.1 Modulator L Band Output ....................................... 1-2
1.1.4.2 Modulator IF Output................................................. 1-2
1.2 Summary of Features................................................ 1-3
1.2.1 Overview.................................................................... 1-3
1.3 Guided Tour............................................................... 1-3
1.3.1 Enclosure.................................................................... 1-3
1.3.2 Front Panel Description............................................ 1-3
1.3.2.1 Vacuum Fluorescent Display (VFD) ....................... 1-4
1.3.2.2 LED Indicators............................................................ 1-4
1.3.2.3 Keypad....................................................................... 1-4
1.3.3 Rear Panel Description............................................. 1-6
1.4 Typical System Setup................................................ 1-7
List of Figures
Figure 1.1: SBM75e Modulator Block Diagram .........................1-3
Figure 1.2: SBM75e Modulator Front Panel ...............................1-4
Figure 1.3: Front Panel LED Indicators........................................1-4
Figure 1.4: Front Panel Keypad...................................................1-4
Figure 1.5: SBM75e Modulator Rear Panel................................1-6
Figure 1.6: Modulator Signal Interconnections.........................1-7
List of Tables
Table 1.1: SBM75e Front Panel LEDs ........................................... 1-4
Table 1.2: Front Panel Keypad Functions..................................1-5
SBM75e Series Modulator Installation and Operation Manual 1-1

Getting Started
1.1 Scope of this Manual
1.1.1 Who Should Use This Manual
This manual is intended for operators/users of the SBM75e of Network L-Band and 70/140 MHz
Satellite Modulators to assist in the installation, operation, fault-finding and maintenance of the
equipment. Throughout this manual, this product is referred to as the ‘SBM75e Modulator ’.
WARNING
DO NOT REMOVE THE COVERS OF THIS EQUIPMENT. HAZARDOUS VOLTAGES ARE PRESENT WITHIN
THIS EQUIPMENT AND MAY BE EXPOSED IF THE COVERS ARE REMOVED. ONLY ADVANTECH AMT
TRAINED PERSONNEL AND APPROVED SERVICE ENGINEERS ARE PERMITED TO SERVICE THIS
EQUIPMENT.
Caution
Unauthorised maintenance or the use of non-approved replacements may affect the equipment
specification and invalidate any warranties.
This Installation and Operation Manual does not include any procedures which require the
removal of any equipment covers.
1.1.2 Version Information
This manual has been written to cover Software Version 1.0.7 and later.
1.1.3 Equipment Covered by this Manual
This manual covers the SBM75e L-Band Satellite Modulator (16” unit) and the L-Band and
70/140 MHz Satellite Modulator (20” unit).
1.1.4 RF/IF Interface Options
The SBM75e Modulator is provided with the following outputs:
L-Band (950 – 2000 MHz)
IF (70/140 MHz)
1.1.4.1 Modulator L Band Output
The L-Band output signal is presented on the rear panel of the Modulator (BNC female, 50Ω). If
the Modulator has been ordered with the BUC power option then the DC voltage is switched
onto the inner conductor of this connector. When installing the Modulator to the system, BUC
power should be turned off.
1.1.4.2 Modulator IF Output
The IF output signal is presented on the rear panel of the Modulator (BNC female, 50Ω).
Caution
With BUC power enabled, there is a potentially damaging DC voltage applied to the
Modulator output. When connecting test equipment, or a local Modulator (or any DC
coupled devices), always use appropriate DC blocks, and disable BUC powering.
1-2 SBM75e Series Modulator Installation and Operation Manual

Getting Started
1.2 Summary of Features
1.2.1 Overview
The SBM75e Modulator supports all the major satellite standards, both Intelsat and DVB, in a one
rack unit chassis, if the appropriate options are enabled.
Figure 1.1: SBM75e Modulator Block Diagram
1.3 Guided Tour
1.3.1 Enclosure
The SBM75e Modulator can be fitted into a 1U high enclosure and may be used on a desktop or
rack mounted.
1.3.2 Front Panel Description
The SBM75e Modulator is provided with a VFD 40 x 2 character display, 7 status LEDs and a 16
button keypad.
LED
Indicators Keypad
VFD
SBM75e Series Modulator Installation and Operation Manual 1-3

Getting Started
Figure 1.2: SBM75e Modulator Front Panel
1.3.2.1 Vacuum Fluorescent Display (VFD)
The VFD can display two lines of up to 40 characters each and has a wide viewing angle.
1.3.2.2 LED Indicators
The LEDs on the front panel indicate the summary status of major Modulator conditions. LEDs that
illuminate GREEN indicate that the function is in operation. LEDs that illuminate RED indicate a
fault condition.
Figure 1.3: Front Panel LED Indicators
Table 1.1: SBM75e Front Panel LEDs
LED Name Colour Description
BUC Power Green Indicates that the BUC power is enabled
LNB Power Green Indicates that the LNB power is enabled
Transmit On Green Indicates that the Modulator is transmitting
Receive 1 Fault Red Indicates that the Demodulator channel is not locked to a received signal
Receive 2 Fault Red Reserved
Transmit Fault Red Indicates that the Modulator is not transmitting due to a fault (or user
intervention)
Prime Power Green Indicates that the power supply current is being received by the
management card
1.3.2.3 Keypad
The front panel 16-button keypad allows for navigation of the display and data input.
Figure 1.4: Front Panel Keypad
1-4 SBM75e Series Modulator Installation and Operation Manual

Getting Started
Table 1.2: Front Panel Keypad Functions
Keys Description
ENTER
This key will enter a submenu or enter an editing mode of a parameter. The Parameter is
only set once ENTER is pressed again otherwise changes will not be saved. Commands
such as reconfigure and reset will activate once the ENTER key is pressed.
CLEAR This Key will return to the previous display or exit out of an editing mode without changing
the parameter.
ST
These keys are used to navigate the menus. The →symbol on the display is used to
point to the current selection. The ↓↑symbols on the display indicate options above and
below. On some menus with a large number of options then the selection will wrap
around. These keys can also be used when editing parameters either from a list or
numerically incrementing or decrementing values including hexadecimal. When a
parameter requires a +/- indicator then these keys are used to toggle between them.
WX These keys are used to navigate a parameter value once it has been selected. The Xkey
will also enter a submenu in the same way as the ENTER key.
0 to 9 When editing a parameter field with a numerical value, these keys allow the number to be
entered directly.
Note
If a parameter is changed and the CLEAR key pressed before ENTER, the parameter change will be
cancelled and the display returned to parameter selection mode.
SBM75e Series Modulator Installation and Operation Manual 1-5

Getting Started
1.3.3 Rear Panel Description
The SBM75e Modulator rear panel provides a number of connectors Further details, including pin-
outs are described in Chapter 2, Installation
ASI 1/2/3/4
Connectors
Ext Ref in
Connector
AC Power
Connector
Redundancy
Connector
1 PPS in
Connector
70/140 MHz
Out connector
Ethernet
Connector
ALARM
Connector
M&C Modulator
Connector
ON/OFF
Switch
RS485
Connector
L-Band out
Connector
Figure 1.5: SBM75e Modulator Rear Panel
1-6 SBM75e Series Modulator Installation and Operation Manual

Getting Started
1.4 Typical System Setup
The following diagram shows a typical system setup and signal interconnections. For detailed
connector information, see Chapter 2, Installation.
Figure 1.6: Modulator Signal Interconnections
SBM75e Series Modulator Installation and Operation Manual 1-7

Getting Started
1-8 SBM75e Series Modulator Installation and Operation Manual

CHAPTER 2: Installation
List of Contents
2.1Introduction ............................................................... 2-2
2.1.1Read This First!............................................................ 2-2
2.1.2General ...................................................................... 2-2
2.1.3Site Requirements ..................................................... 2-2
2.1.3.1Power Supplies .......................................................... 2-2
2.1.3.2Environment............................................................... 2-2
2.1.4EMC Compliance Statements................................ 2-2
2.1.4.1EN 55022..................................................................... 2-2
2.1.4.2FCC ............................................................................. 2-2
2.2Preliminary Checks ................................................... 2-3
2.2.1Mechanical Inspection............................................ 2-3
2.2.2Moving the Equipment Safely................................. 2-3
2.3Unpacking and Inspection...................................... 2-3
2.3.1Unpacking.................................................................. 2-3
2.3.2Inventory..................................................................... 2-4
2.4Installing the equipment.......................................... 2-4
2.4.1Modulator Rack Mounting Support Kit.................. 2-4
2.4.2Cable Routing ........................................................... 2-5
2.4.3Equipment Access.................................................... 2-5
2.4.4Ventilation.................................................................. 2-5
2.5Power Requirements and Earthing ........................ 2-6
2.5.1Power Cables ............................................................ 2-6
2.5.2AC Power................................................................... 2-7
2.5.2.1Connecting the SBM75e Modulator to the AC
power Supply............................................................. 2-7
2.5.2.2General ...................................................................... 2-7
2.5.2.3Protective Earth/Technical Earth............................ 2-8
2.6Signal Connections................................................... 2-9
2.6.1M&C Connector - RS232.......................................... 2-9
2.6.2M&C Connector – RS485......................................... 2-9
2.6.3M&C Connector - 10/100BaseT Ethernet............ 2-10
2.6.4Monitor and Control Alarms.................................. 2-10
2.6.5Redundancy............................................................ 2-11
2.6.6RF (L-Band) Output Connector.............................2-12
2.6.7ASI Input Connector ...............................................2-12
2.6.81Pulse Per Second (1PPS) InputConnector.........2-12
2.6.9External Reference Input Connector...................2-13
2.6.1070/140 MHz (IF) Output Connector ......................2-13
2.7Configuring the Modulator for Best
Performance............................................................2-13
2.7.1Bringing the Modulator Online..............................2-13
2.7.2Choice of FEC..........................................................2-14
2.7.3Pilots Insertion...........................................................2-15
List of Figures
Figure 2.1: Rack Mount Support Kit ............................................2-5
Figure 2.2: Air Path Through the Enclosure................................2-6
Figure 2.3: Location of AC power connector ..........................2-7
Figure 2.4: Location of Technical Earth.....................................2-8
List of Tables
Table 2.1: SBM75e Modulator Rack Mounting Support Kits....2-4
Table 2.2: Supply Cable Wiring Colours.....................................2-8
Table 2.3: Non Standard Supply Cord Wire Colours................2-8
Table 2.4: M&C Connector RS232..............................................2-9
Table 2.5: M&C Connector – RS485...........................................2-9
Table 2.6: M&C Connector - 10/100BaseT Ethernet..............2-10
Table 2.8: Alarm Connector Pin-outs .......................................2-10
Table 2.9: RF (L-Band) Output Connector...............................2-12
Table 2.10: ASI Input Connector...............................................2-12
Table 2.11: 1PPS Input Connector...........................................2-13
Table 2.12: Ext Ref In Connector...............................................2-13
Table 2.13: 70/140 MHz (IF) Output Connector......................2-13
Table 2.14: FEC/Mode/Rate Configuration Values...............2-15
SBD75e Series Modulator Installation and Operation Manual 2-1

Installation
2.1 Introduction
This chapter describes the unpacking, inspection and installation considerations.
2.1.1 Read This First!
The SBM75e Modulator must be handled carefully and thoughtfully to prevent safety hazards
and damage. Ensure the personnel designated to install the unit have the appropriate skills and
knowledge. If in any doubt, contact Advantech AMT Customer Support.
Follow the instructions for installation and only use installation accessories recommended by the
manufacturers.
2.1.2 General
Advantech AMT personnel normally perform installation of the SBM75e Modulator. This chapter
provides configuration and connection information for planning installations, checking the final
set-up in the event of a fault, modifying the requirements or moving the equipment to another
location. In the event of problems, contact Customer Support.
2.1.3 Site Requirements
2.1.3.1 Power Supplies
See Appendix A, Technical Specification for a full specification.
2.1.3.2 Environment
See Appendix A, Technical Specification for a full specification.
Do not install this product in areas of high humidity or where there is danger of water ingress.
The installation site should be compatible with the location used for other electronic equipment.
That is, the building should be free from excessive dust and moisture. The room should not
exceed the recommended temperature range (defined in Appendix B Technical Specifications).
The installation location should allow for ample airflow. Also, allow extra room for service access
to cables and wiring.
2.1.4 EMC Compliance Statements1
2.1.4.1 EN 55022
This equipment is a Class A product. In a domestic environment this product may cause radio
interference in which case the user may be required to take adequate measures.
2.1.4.2 FCC
This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment.
This equipment generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at his own
expense.
1The EMC information was correct at the time of manufacture. The EMC tests were performed with the Technical earth attached.
2-2 SBD75e Series Modulator Installation and Operation Manual

Installation
2.2 Preliminary Checks
2.2.1 Mechanical Inspection
When taking delivery of an SBM75e Modulator, check the equipment items delivered against the
enclosed delivery note. Inspect the equipment for damage in transit. If in doubt, contact
Customer Support (see Preliminary Pages).
NOTE…
Do not remove the covers of this equipment as doing so may invalidate any warranties, cause a safety
hazard and/or affect the EMC performance. It may also invalidate any safety tests. Check with
Customer Support beforehand.
2.2.2 Moving the Equipment Safely
Do not place this product on an unstable cart, stand, bracket, or table. The
product may fall, causing serious injury and serious damage to the product. Use
only with a cart, stand, bracket or table recommended by Advantech AMT
An appliance and cart combination should be moved with care. Quick stops, excessive force,
and uneven surfaces may cause the appliance and cart combination to overturn.
Do not move or carry the equipment whilst it is still connected to the supply or other leads, is live
or is in operation.
2.3 Unpacking and Inspection
Check for damage to the outside and the inside of the shipping container. If there is any
damage, contact Customer Service and the shipping carrier to report it.
2.3.1 Unpacking
To insure safety and proper operation of this equipment, use the following unpacking and
repackaging guidelines:
The equipment is shipped in a high-quality cardboard container and packed with
high-density moulded foam. This type of packing material can withstand impairments such
as vibration and impact associated with long-distance shipment. The packing box and
foam is the only suitable type of packing that should be used for shipping the equipment.
While unpacking, observe how the equipment is packed. In order to avoid damage, it must
be repackaged in exactly the same manner if you need to ship the unit to another location
or return it to the factory.
The packing consists of one large cardboard box, two foam side caps, and one accessory box.
Please retain these items for future use
SBD75e Series Modulator Installation and Operation Manual 2-3

Installation
2.3.2 Inventory
Take inventory of the complete package to ensure that all necessary parts are present. A quick
review of your pre-installation site survey form, purchase order, and shipping list should reveal any
discrepancies. The box should contain the modulator, a power cord, a fan filter kit, and this
manual. If any additional kits have been ordered such as the Rear Support Kit verify the contents
using the packing slip
2.4 Installing the equipment
Move the unit to the location where it will be installed. Ideally, the unit will be installed into an
equipment rack or a shelf. Prior to installing the SBM75e Modulator, determine the depth of the
supporting structure. A Rack Mount Support Kit may be required (if this has not been supplied
with your modulator when purchased, see Preliminary Pages for ordering information. If
necessary, prior to installation into the rack or shelf, remove the three coloured screws on the
bottom side of the chassis. The removal of these screws frees up the anti-vibration mount that
was secured during shipping. Install the fan filters onto the external fans, if a regular maintenance
schedule can be provided to clean or replace the fans. Do not install the filters at a remote
location unless quarterly preventative maintenance is performed. Follow the additional
precautions shown below:
Do not block the air holes or the fan cut outs the back panel of the unit. These openings
must be kept clear for the proper cooling of the equipment.
Do not place the units beside each other or on top of each other. The exhaust from one unit
can be drawn into the air intake of another.
Make sure the room is properly cooled. Normal cooling may not be sufficient for locations
where the electrical equipment is installed.
Always make sure the unit’s top cover is installed and secured in place.
If it has not already been done, label each cable that will be attached to the unit. This will
prevent confusion and ensures proper connection.
2.4.1 Modulator Rack Mounting Support Kit
Rack support kits are available to secure the SBM75e Modulator securely into the supporting
structure. See Table 2.1 for details of the kit required for various rack sizes.
Table 2.1: SBM75e Modulator Rack Mounting Support Kits
Rack Depth Kit
600mm 19A-230001-001
700mm 19A-230021-001
800mm 19A-230011-001
2-4 SBD75e Series Modulator Installation and Operation Manual

Installation
Figure 2.1: Rack Mount Support Kit
The left and right mounting kit supports are attached to the SBM75e Modulator with two #6-32 x
5/16” Phillips countersunk screws. Each angle is attached to a support by one #8-32 x ½” screw,
one #8 lock washer, one#8 flat washer 3/8” OD, one #8 flat washer ½” OD and one #8-32
hexagonal nut.
Do not use this product as a support for any other equipment.
2.4.2 Cable Routing
Power supply cables should be routed so that they are not likely to be walked on or pinched by
items placed upon or against them. Pay particular attention to cables at plugs, convenience
receptacles, and the point where they exit from the appliance.
Do not run AC power cables in the same duct as signal leads.
2.4.3 Equipment Access
Ensure that the SBM75e Modulator is installed in such a way as to allow access to the rear of the
unit and the connectors.
2.4.4 Ventilation
WARNING...
NEVER PUSH OBJECTS OF ANY KIND INTO THIS EQUIPMENT THROUGH OPENINGS AS THEY MAY
TOUCH DANGEROUS VOLTAGE POINTS OR SHORT-OUT PARTS THAT COULD RESULT IN A FIRE OR
ELECTRIC SHOCK. NEVER SPILL LIQUID OF ANY KIND ON THE PRODUCT.
Cautions
1. Openings in the cabinet are provided for ventilation and to ensure reliable operation of the
product and to protect it from overheating, and these openings must not be blocked or
covered. This product should never be placed near or over a radiator or heat register. This
product should not be placed in a built-in installation such as a rack unless proper
ventilation is provided or the instructions have been adhered to.
SBD75e Series Modulator Installation and Operation Manual 2-5

Installation
2. Do not install equipment so that the air intake of one aligns with the outlet on another.
Provide baffles and adequate spacing.
3. The fans contained within this unit are not fitted with a dust/insect filter. Pay particular
attention to the environment in which it is to be used.
The unit is designed for stationary or fixed use only. Ensure it is firmly and safely located and has
an adequate through-flow of air. Allow at least 50 mm free air-space at each side of the
equipment. Units in racks can be stacked without ventilation panels between. Racks containing
stacked equipment may need to be forced-air cooled to reduce the operating ambient
temperature. For stacking constraints contact Advantech Customer Support.
Figure 2.2: Air Path Through the Enclosure
Warm air is
exhausted via
side vents
2.5 Power Requirements and Earthing
Caution
This product should be operated only from the type of power source indicated on the marking
label. If you are not sure of the type of power supply to your business, consult a qualified
electrical engineer or your local power company.
The SBM75e Modulator is available in an AC powered version which may be operated with any
regular worldwide office or domestic supply.
2.5.1 Power Cables
WARNINGS
1. THIS UNIT MUST BE CORRECTLY EARTHED THROUGH THE MOULDED PLUG SUPPLIED. IF THE
LOCAL MAINS SUPPLY DOES NOT HAVE AN EARTH CONDUCTOR DO NOT CONNECT THE UNIT.
CONTACT CUSTOMER SUPPORT FOR ADVICE.
2. BEFORE CONNECTING THE UNIT TO THE SUPPLY, CHECK THE SUPPLY REQUIREMENTS IN ANNEX
B, TECHNICAL SPECIFICATION.
Cool air is
brought into the
unit via fans
2-6 SBD75e Series Modulator Installation and Operation Manual