ICS-75
Integrated Combiner Shelf
Installation and Operation Manual
Part Number MN/ICS75.IOM
Revision 5
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.
ICS-75
Integrated Combiner Shelf
Installation and Operation Manual
Part Number MN/ICS75.IOM
Revision 5
August 14, 2007
Copyright © Comtech EF Data, 2007. All rights reserved. Printed in the USA.
Comtech EF Data, 2114 West 7th Street, Tempe, Arizona 85281 USA, 480.333.2200, FAX: 480.333.2161
This page is intentionally blank.
ICS-75 Integrated Combiner Shelf Revision 5
Table of Contents MN/ICS75.IOM
Table of Contents
PREFACE.................................................................................................................................... V
Customer Support ......................................................................................................................v
About this Manual......................................................................................................................vi
Reporting Comments or Suggestions Concerning this Manual ...............................................vi
Conventions and References ...................................................................................................vi
Cautions and Warnings............................................................................................................vi
Metric Conversion....................................................................................................................vi
Recommended Standard Designations ...................................................................................vi
Trademarks..............................................................................................................................vi
European Electromagnetic Compatibility (EMC) Directive...................................................vii
EN55022 - 1997 Compliance.................................................................................................. vii
Safety Compliance....................................................................................................................vii
EN60950................................................................................................................................. vii
Low Voltage Directive (LVD)................................................................................................... vii
Warranty Policy........................................................................................................................viii
Limitations of Warranty ...........................................................................................................viii
Exclusive Remedies.................................................................................................................ix
CHAPTER 1. INTRODUCTION...........................................................................................1–1
1.1 Overview ......................................................................................................................1–1
1.2 Theory of Operation....................................................................................................1–2
1.3 Summary of Specifications........................................................................................1–3
CHAPTER 2. INSTALLATION............................................................................................2–1
2.1 Unpacking....................................................................................................................2–1
2.2 Mounting......................................................................................................................2–2
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Table of Contents MN/ICS75.IOM
CHAPTER 3. CONNECTIONS, PINOUTS, AND OPERATION.........................................3–1
3.1 Overview ......................................................................................................................3–1
3.2 System Connections...................................................................................................3–2
3.3 Connection Description and Function......................................................................3–3
3.3.1 Uplink Connectors (Rear Panel)............................................................................3–3
3.3.1.1 Uplink Inputs......................................................................................................3–3
3.3.1.2 Uplink Outputs...................................................................................................3–3
3.3.2 Downlink Connectors (Rear Panel).......................................................................3–3
3.3.2.1 Downlink Inputs.................................................................................................3–3
3.3.2.2 Downlink Outputs ..............................................................................................3–3
3.3.3 Monitor Connectors (Front Panel).........................................................................3–3
3.3.3.1 Uplink Monitor ...................................................................................................3–3
3.3.3.2 Downlink Monitor...............................................................................................3–4
3.4 Connector Pinouts......................................................................................................3–4
3.4.1 Rear Panel ................................................................................................................3–4
3.4.2 Front Panel ...............................................................................................................3–5
3.5 Troubleshooting System Faults ................................................................................3–6
Figures
Figure 1-1. ICS-75 Integrated Combiner Shelf............................................................1–1
Figure 1-2. ICS-75 Block Diagram ..............................................................................1–2
Figure 2-1. ICS-75 Rack Mounting..............................................................................2–2
Figure 3-1. ICS-75 Front and Rear Panel Connectors (8-input configuration shown) ..... 3–1
Figure 3-2. Typical Interconnect Diagram ................................................................... 3–2
Figure 3-3. Rear Panel Connector Schematic.............................................................3–4
iv
Customer Support
Contact the Comtech EF Data Customer Support Department for:
• Product support or training
• Reporting comments or suggestions concerning manuals
• Information on upgrading or returning a product
A Customer Support representative may be reached at:
Comtech EF Data
Attention: Customer Support Department
2114 West 7th Street
Tempe, Arizona 85281 USA
480.333.2200 (Main Comtech EF Data number)
480.333.4357 (Customer Support Desk)
480.333.2161 FAX
To return a Comtech EF Data product (in-warranty and out-of-warranty) for repair
or replacement:
• Contact the Comtech EF Data Customer Support Department. Be prepared to supply the
Customer Support representative with the model number, serial number, and a description
of the problem.
• Request a Return Material Authorization (RMA) number from the Comtech EF Data
Customer Support representative.
• Pack the product in its original shipping carton/packaging to ensure that the product is not
damaged during shipping.
• Ship the product back to Comtech EF Data. (Shipping charges should be prepaid.)
For Online Customer Support:
An RMA number request can be requested electronically by contacting the Customer Support
Department through the online support page at
• Click on “Return Material Authorization” for detailed instructions on our return procedures.
• Click on the “RMA Request Form” hyperlink, then fill out the form completely before sending.
• Send e-mail to the Customer Support Department at service@comtechefdata.com.
For information regarding this product’s warranty policy, refer to the Warranty Policy, p. viii.
Preface
www.comtechefdata.com/support.asp:
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Preface MN/ICS75.IOM
About this Manual
This manual provides installation and operation information for the Comtech EF Data
ICS-75 Integrated Combiner Shelf. This is a technical document intended for earth
station engineers, technicians, and operators responsible for the operation and
maintenance of the ICS-75.
Reporting Comments or Suggestions Concerning this Manual
Comments and suggestions regarding the content and design of this manual are
appreciated. To submit comments, please contact the Comtech EF Data Technical
Publications department:
TechnicalPublications@comtechefdata.com
Conventions and References
Cautions and Warnings
IMPORTANT
CAUTION
WARNING
IMPORTANTor NOTE indicates a statement that is associated with the task
being performed or information critical for proper equipment function.
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 indicates a potentially hazardous situation that, if not avoided,
could result in death or serious injury.
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 are interchangeable with the designations of
the Electronic Industries Association (EIA).
Trademarks
Windows is a trademark of the Microsoft Corporation. Other product names mentioned in
this manual may be trademarks or registered trademarks of their respective companies
and are hereby acknowledged.
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Preface MN/ICS75.IOM
European Electromagnetic Compatibility (EMC) Directive
NOTE
In order to meet the European Electromagnetic Compatibility (EMC)
Directive (EN55022, EN50082-1), properly shielded cables for DATA I/O
shall be used. More specifically, these cables shall be double-shielded
from end to end, ensuring a continuous shield.
EN55022 - 1997 Compliance
This equipment meets the radio disturbance characteristic specifications for information
technology equipment as defined in EN55022.
Safety Compliance
EN60950
Applicable testing is routinely performed as a condition of manufacturing on all units to
ensure compliance with safety requirements of EN60950.This equipment meets the
Safety of Information Technology Equipment specification as defined in EN60950.
Low Voltage Directive (LVD)
The following information is applicable for the European Low Voltage Directive
(EN60950):
<HAR> Type of power cord required for use in the European Community.
!
International Symbols:
Symbol Definition Symbol Definition
~
NOTE
CAUTION: Double-pole/Neutral Fusing
ACHTUNG: Zweipolige bzw. Neutralleiter-Sicherung
Alternating Current
For additional symbols, refer to the Cautions and Warnings section
featured earlier in this Preface.
Fuse
Protective Earth /
Safety Ground
Chassis Ground
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Preface MN/ICS75.IOM
Warrant y Policy
Comtech EF Data products are warranted against defects in material and
workmanship for a period of two years from the date of shipment. During the
warranty period, Comtech EF Data will, at its option, repair or replace products
that prove to be defective.
For equipment under warranty, the owner is responsible for freight to Comtech EF
Data and all related customs, taxes, tariffs, insurance, etc. Comtech EF Data is
responsible for the freight charges only for return of the equipment from the factory
to the owner. Comtech EF Data will return the equipment by the same method (i.e.,
Air, Express, Surface) as the equipment was sent to Comtech EF Data.
All equipment returned for warranty repair must have a valid RMA number issued
prior to return and be marked clearly on the return packaging. Comtech EF Data
strongly recommends all equipment be returned in its original packaging.
Comtech EF Data Corporation’s obligations under this warranty are limited to
repair or replacement of failed parts, and the return shipment to the buyer of the
repaired or replaced parts.
Limitations of Warranty
The warranty does not apply to any part of a product that has been installed,
altered, repaired, or misused in any way that, in the opinion of Comtech EF Data
Corporation, would affect the reliability or detracts from the performance of any
part of the product, or is damaged as the result of use in a way or with equipment
that had not been previously approved by Comtech EF Data Corporation.
The warranty does not apply to any produ ct or parts thereof where the serial number
or the serial number of any of its parts has been altered, defaced, or removed.
The warranty does not cover damage or loss incurred in transportation of the product.
The warranty does not cover replacement or repair necessitated by loss or damage
from any cause beyond the control of Comtech EF Data Corporation, such as
lightning or other natural and weather related events or wartime environments.
The warranty does not cover any labor involved in the removal and or
reinstallation of warranted equipment or parts on site, or any labor required to
diagnose the necessity for repair or replacement.
The warranty excludes any responsibility by Comtech EF Data Corporation for
incidental or consequential damages arising from the use of the equipment or
products, or for any inability to use them either separate from or in combination
with any other equipment or products.
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Preface MN/ICS75.IOM
A fixed charge established for each product will be imposed for all equipment
returned for warranty repair where Comtech EF Data Corporation cannot identify
the cause of the reported failure.
Exclusive Remedies
Comtech EF Data Corporation’s warranty, as stated is in lieu of all other warranties,
expressed, implied, or statutory, including those of merchantability and fitness for a
particular purpose. The buyer shall pass on to any purchaser, lessee, or other user of
Comtech EF Data Corporation’s products, the aforementioned warranty, and shall
indemnify and hold harmless Comtech EF Data Corporation from any claims or
liability of such purchaser, lessee, or user based upon allegations that the buyer, its
agents, or employees have made additional warranties or representations as to
product preference or use.
The remedies provided herein are the buyer’s sole and exclusive remedies.
Comtech EF Data shall not be liable for any direct, indirect, special, incidental, or
consequential damages, whether based on contract, tort, or any other legal theory.
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Preface MN/ICS75.IOM
Notes:
x
Chapter 1. INTRODUCTION
1.1 Overview
Figure 1-1. ICS-75 Integrated Combiner Shelf
The ICS-75 Combiner Shelf, shown in
individual splitter/combiners usually associated with earth station IF racks into one
convenient package.
Housed in a 2RU (3.5”) high, 19” rack-mountable chassis, the ICS-75 is composed
entirely of passive components, and therefore requires no AC power input.
Operating in the IF frequency range of 50 to 180 MHz, the ICS-75 consists of four IF
combiners and four IF splitters built into the same chassis:
• Each uplink channel may optionally have four, six, or eight inputs.
• Each downlink channel may optionally have four, six, or eight outputs.
Each channel has a monitor port available to sample the combined port. The monitor
ports are location on the front panel, while all inputs and outputs are located on a
logically arranged rear panel, eliminating confusion and greatly easing equipment
installation and rack configuration.
Figure 1-1, organizes the mass of cables and
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Introduction MN/ICS75.IOM
1.2 Theory of Operation
A block diagram for the ICS-75 Integrated Shelf Combiner is shown in Figure 1-2.
Figure 1-2. ICS-75 Block Diagram
Each of the eight channels enclosed in the combiner shelf is made up of a power
combiner/divider and a directional coupler. The polarity of the directional coupler is
dependent on whether the channel is an uplink or downlink.
The combiner/divider circuits in the ICS-75 are capable of holding four, six, or eight
input/output connectors.
For more detailed information, refer to the interconnect diagram depicted in Figure 3-2.
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Introduction MN/ICS75.IOM
1.3 Summary of Specifications
Equipment Type
Manufacturer
Frequency Range
Uplinks
Downlinks
IF Impedance
Return Loss
(Inputs and Outputs)
IF Loss by Number of
Channel Ports
Flatness
Monitor Coupling Loss
Return Loss Monitor Ports
IF Connectors
Integrated Combiner Shelf
Comtech EF Data, Tempe, Arizona
50 to 180 MHz
Configurable for 1 to 4 uplinks, with options for the uplinks to
have 4, 6, or 8 inputs
Configurable for 1 to 4 downlinks, with options for the
downlinks to have 4, 6, or 8 outputs.
All Ports — 75Ω (50Ω optional)
20 dB minimum
4 Ports
6 Ports
8 Ports
± 0.25 over 20 MHz
20 dB ± 0.5 dB
20 dB Minimum (both 50Ω and 75Ω)
BNC Female
*
<7.2 dB
<10.5 dB
<10.5 dB
Physical Size
Weight
3.5 H x 19 W x 22 D inches
(88.9 H x 482.6 W x 558.8 D mm [excluding connectors])
19-inch rack mounting compatibility
10 lbs. (4.54 kg) max.
* Note – Based on 8 ports. The IF loss based on 6 ports for older units is typically
<9.2 dB. These units are no longer available.
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Introduction MN/ICS75.IOM
Notes:
1–4
2.1 Unpacking
T
The ICS-75 Integrated Combiner Shelf and its Installation and Operation Manual are
shipped in a preformed reusable foam enclosure inside a cardboard carton. Unpack and
inspect the ICS-75 as follows:
Step Procedure
1 Inspect shipping containers for damage.
2
3 Remove the packing list from the outside of the shipping carton.
Chapter 2. INSTALLATION
If shipping containers are damaged, keep them until the contents of the
shipment have been carefully inspected and checked for normal
operation.
4
5
6
7
CAUTION
IMPORTAN
Open the carton by cutting the tape at the top of the carton (indicated
by
OPEN THIS END) and remove the contents.
Check the contents against the packing list to verify completeness of
the shipment.
If damage is evident, contact the carrier and Comtech EF Data
immediately and submit a damage report.
If the unit needs to be returned to Comtech EF Data, use the original
shipping container.
Do not use any cutting tool that will extend more than 1” into the
container and cause damage to the unit.
Be sure to keep all shipping materials for the carrier's inspection.
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Installation MN/ICS75.IOM
2.2 Mounting
The ICS-75 is constructed as a 2U-high, rack-mounting chassis. As shown in Figure 2-1,
rack handles are provided to facilitate removal and placement into an equipment rack.
Mount the ICS-75 in its assigned position in the rack using the mounting holes on the
front panel; alternatively, optional rack slides may be installed to the sides of the ICS-75
chassis.
Figure 2-1. ICS-75 Rack Mounting
2–2
PINOUTS, AND OPERATION
3.1 Overview
Figure 3-1 shows the front and rear panel connectors for the ICS-75 Integrated Combiner Shelf.
Chapter 3. CONNECTIONS,
(a) Front Panel – Monitor (Uplink / Downlink)
(b) Rear Panel
Figure 3-1. ICS-75 Front and Rear Panel Connectors (8-input configuration shown)
( c) Typical Rear Panel
Uplink In / Downlink Out
(d) Rear Panel
Uplink Out / Downlink In
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Cable Connections MN/ICS75.IOM
3.2 System Connections
Once the ICS-75 has been mounted in its assigned position in the equipment rack as
shown in Chapter 2, all cables may be connected to the appropriate locations on the rear
panel.
Figure 3-2 depicts the interconnect diagram typical for an 8-input installation. See
Par.
3.4 for connector pinout information.
Figure 3-2. Typical Interconnect Diagram
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Cable Connections MN/ICS75.IOM
3.3 Connection Description and Function
All connectors used on the ICS-75 are BNC type connectors. Depending on the unit’s
operational impedance, connector input and output impedance is either 50Ω or 75Ω. See
Par.
3.4 for connector pinout information.
IMPORTANT
All unused connectors must be terminated with a load matching the
operational impedance of the unit (i.e., a 50Ω unit must use 50Ω
loads, and a 75Ω unit must use 75Ω loads).
3.3.1 Uplink Connectors (Rear Panel)
3.3.1.1 Uplink Inputs
These are the four channels of the four to eight IF inputs from the modems that are
combined to form the transmitted signal paths.
3.3.1.2 Uplink Outputs
These are the four channels of combined IF inputs that are output to the transmitter.
3.3.2 Downlink Connectors (Rear Panel)
3.3.2.1 Downlink Inputs
These are the four channels that divide the signals from the receiver.
3.3.2.2 Downlink Outputs
These are the four channels of four to eight IF outputs that are divided to form the
received signal paths to the modems.
3.3.3 Monitor Connectors (Front Panel)
3.3.3.1 Uplink Monitor
These four outputs provide a means to check the summed IF signals. Each sample is
taken by a 20 dB directional coupler.
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Cable Connections MN/ICS75.IOM
3.3.3.2 Downlink Monitor
These four outputs provide a means to check the received IF signals. Each sample is
taken by a 20 dB directional coupler.
3.4 Connector Pinouts
3.4.1 Rear Panel
Figure 3-3. Rear Panel Connector Schematic
Name Ref. Des.
UPLINK 1 IN J1-J8 Uplink IF input
DOWNLINK 1
OUT
J51-J58
Connector
Type
BNC
Function
Downlink IF
output
Name Ref. Des.
UPLINK 2 IN J11-J18 Uplink IF Input
DOWNLINK 2
OUT
J61-J68
Connector
Type
BNC
Function
Downlink IF
Output
Name Ref. Des.
UPLINK 3 IN J21-J28 Uplink IF input
DOWNLINK 3
OUT
J71-J78
Connector
Type
BNC
Function
Downlink IF
output
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ICS-75 Integrated Combiner Shelf Revision 5
Cable Connections MN/ICS75.IOM
Name Ref. Des.
UPLINK 4 IN J31-J38 Uplink IF input
DOWNLINK 4
OUT
J81-J90
Connector
Type
BNC
Function
Downlink IF
output
3.4.2 Front Panel
Name Ref. Des.
UPLINK OUT J41-J44 Uplink IF output
DOWNLINK IN J91-J94
Connector
Type
BNC
Function
Downlink IF input
Name Ref. Des.
UPLINK MONITOR 1-4 UPLINK sampled output
DOWNLINK MONITOR 1-4
Connector
Type
BNC
Function
DOWNLINK sampled input
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3.5 Troubleshooting System Faults
The ICS-75 Integrated Combiner Shelf is made entirely of passive components – with no
user-replaceable modules contained in the unit, it provides extremely reliable service.
To troubleshoot proper operation of the ICS-75, refer to the following table:
Fault Possible Problem and Action
Excessive Insertion Loss
• Check to ensure that the allowable insertion loss for
the configured unit is within the parameters defined in
Chapter 1.3 – Summary of Specifications.
• Verify all unused connectors have 50Ω or 75Ω
terminators, depending on the operational impedance of
the unit.
• Check external cables for broken connections and
proper impedance.
• Verify system configuration for proper input and output
connections, as outlined earlier in this chapter.
• If all external connections are proper, return the unit for
repair.
3–6
METRIC CONVERSIONS
Units of Length
Unit
1 centimeter — 0.3937 0.03281 0.01094
Centimeter
Inch
Foot Yard Mile
6.214 x 10
Meter Kilometer Millimeter
-6
0.01 — —
—
-5
0.254 — 25.4
-4
0.3048 — —
-4
0.9144 — —
-4
— — —
1.609 x 103
1.609 —
1 inch 2.540 — 0.08333 0.2778
1 foot 30.480 12.0 — 0.3333
1 yard 91.44 36.0 3.0 —
1 meter 100.0 39.37 3.281 1.094
1 mile
1 mm — 0.03937 — — — — — —
1 kilometer — — — — 0.621 — — —
1.609 x 10
5
6.336 x 104 5.280 x 103 1.760 x 103
1.578 x 10
1.893 x 10
5.679 x 10
6.214 x 10
Temperature Conversions
Unit
32° Fahrenheit
212° Fahrenheit
-459.6° Fahrenheit
° Fahrenheit ° Centigrade
—
—
—
0
(water freezes)
100
(water boils)
273.1
(absolute 0)
Formulas
C = (F - 32) * 0.555
F = (C * 1.8) + 32
Units of Weight
Unit Gram
Ounce
Avoirdupois
Ounce
Troy
Pound
Avoirdupois
Pound
Troy
Kilogram
1 gram — 0.03527 0.03215 0.002205 0.002679 0.001
1 oz. avoir. 28.35 — 0.9115 0.0625 0.07595 0.02835
1 oz. troy 31.10 1.097 — 0.06857 0.08333 0.03110
1 lb. avoir. 453.6 16.0 14.58 — 1.215 0.4536
1 lb. Troy 373.2 13.17 12.0 0.8229 — 0.3732
1 kilogram
1.0 x 10
3
35.27 32.15 2.205 2.679 —
2114 WEST 7TH STREET TEMPE ARIZONA 85281 USA
480 • 333 • 2200 PHONE
480 • 333 • 2161
FAX
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