ATX SignalOn Series Manual de usuario
RF Switch Module
User Manual
Although every effort has been taken to ensure the accuracy of this document it may be necessary, without notice, to make amendments or correct omissions.
Specications subject to change without notice.
SignalOn®Series
SignalOn®Series is a registered trademark of ATX in the United States and/or other countries. Products or features contained herein may be covered by one or more U.S. or
foreign patents. Other non-ATX product and company names in this manual are the property of their respective companies.
TABLE OF CONTENTS
Page
Introduction........................................................................................................................................................ iii
Admonishments ................................................................................................................................................ iii
General Safety Precautions.............................................................................................................................. iii
Certication........................................................................................................................................................ iii
FCC Compliance Statement ............................................................................................................................. iii
1. GENERAL.................................................................................................................................................. 1-1
1.1. Compatibility with RFWorx®Product Line.......................................................................................... 1-1
2. PRODUCT DESCRIPTION........................................................................................................................ 2-1
2.1. RF Switch Module Congurations ..................................................................................................... 2-1
2.2. Features ............................................................................................................................................ 2-1
3. APPLICATIONS......................................................................................................................................... 3-1
4. SPECIFICATIONS ..................................................................................................................................... 4-1
5. INSTALLATION ......................................................................................................................................... 5-1
5.1. Alarm Connections ............................................................................................................................ 5-1
6. SYSTEM OPERATION .............................................................................................................................. 6-1
6.1. Input RF Level Calibration................................................................................................................. 6-3
6.2. RF Input Level Calculation ................................................................................................................ 6-3
6.3. Protection Switching.......................................................................................................................... 6-4
6.4. Alarm Contact Closure ...................................................................................................................... 6-4
7. SERVICE & SUPPORT.............................................................................................................................. 7-1
7.1. Contact ATX Networks....................................................................................................................... 7-1
7.2. Warranty Information ......................................................................................................................... 7-1
7.3. Safety ................................................................................................................................................ 7-1
i
Index of Figures and Tables
Figures
#1 Single RF Switch Module.......................................................................................1-1
#2 Dual RF Switch Module .........................................................................................1-1
#3 General Application Amplier Redundancy............................................................3-1
#4 General Application Path Redundancy..................................................................3-1
#5 RF Switch Module Installation 2RU Chassis .........................................................5-1
#6 RF Switch Module Installation 5RU Chassis .........................................................5-2
#7 Single RF Switch Module.......................................................................................6-2
#8 Dual RF Switch Module .........................................................................................6-2
Tables
#1 Physical and Environmental Specications ...........................................................4-1
#2 Electrical Specications.........................................................................................4-1
#3 Rear Panel Connections and Switches .................................................................6-1
#4 Front Panel Indicators and Control........................................................................6-1
#5 RF Input Level Calculations...................................................................................6-3
#6 Switch Logic...........................................................................................................6-4
ii
Introduction
The SignalOn Series RF Switch Module is designed to be installed in the 8- or 20-position SignalOn Series chassis. Each
RF switch module occupies two positions in the chassis. The mechanical dimensions, cable management, and aesthetics
of the RF Switch Module are compatible with the SignalOn product line. The system is designed to accommodate superior
cable management and ease of use.
Admonishments
Important safety admonishments are used throughout this manual to warn of possible hazards to persons or equipment.
An admonishment identies a possible hazard and then explains what may happen if the hazard is not avoided. The
admonishments — in the form of Dangers, Warnings, and Cautions — must be followed at all times. These warnings are
agged by use of the triangular alert icon (seen below), and are listed in descending order of severity of injury or damage
and likelihood of occurrence.
Danger: Danger is used to indicate the presence of a hazard that will cause severe personal injury, death, or substantial
property damage if the hazard is not avoided.
Warning: Warning is used to indicate the presence of a hazard that can cause severe personal injury, death, or substantial
property damage if the hazard is not avoided.
Caution: Caution is used to indicate the presence of a hazard that will or can cause minor personal injury or property
damage if the hazard is not avoided.
General Safety Precautions
Warning: Never install equipment in a wet location or during a lightning storm.
Certication
SignalOn Forward Path products have been tested and found to comply with the requirements of UL 60950, and CSA 22.2
No. 0.7, emissions EN55022 radiated and conducted.
FCC Compliance Statement
The SignalOn Forward Path Amplier product line has been certied to comply with the requirements for class A computing
devices per part 15 of the FCC regulations.
Warning: This equipment generates, uses, and can radiate radio frequency energy and if not installed and used in accordance
with the instruction manual, may cause interference to radio communications. It has been tested and found to comply with
limits for a Class A digital device pursuant to Subpart B of Part 15 of FCC Rules, which are designed to provide reasonable
protection against such interference when operated in a commercial environment. Operation of this equipment in a residential
area is likely to cause interference to TV and radio reception in which case the user, at their own expense, will be required to
take whatever measures may be required to correct the interference.
This equipment does not exceed Class A limits for radio emission for digital apparatus, set out in the radio interference
regulation of the authorization methods of Industry Canada. Operation in a residential area may cause unacceptable
interference to TV and radio reception requiring the owner or operator to take whatever steps are necessary to correct the
interference.
SignalOn®Series – RF Switch Module User Manual iii
PREFACE
PREFACE
SignalOn®Series – RF Switch Module User Manual iv
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GENERAL
1. General
The SignalOn system is a modular system that permits high isolation combining, splitting, switching, and amplication of
headend signals in a CATV system. The system is designed to accommodate strong cable management, EMI shielding, and
ease of use. This facilitates easy reconguration and high performance within a dynamic headend environment.
The SignalOn RF Switch Module (RFSM) is designed for use with the SignalOn 8-position, or 20-position powered chassis.
All RF connections to the switch are made through standard 75 Ohm BNC, or F connectors located on the rear. All operating
controls and indicators are located on the switch front panel with conguration controls located on the rear.
Each SignalOn RF Switch Module (RFSM) occupies two positions in a chassis. Up to nine RFSMs and one power supply,
or eight RFSMs and two load-sharing, redundant power supplies can be installed in a vertical 20-position (5RU) SignalOn
chassis. Ten RFSMs may be installed in the vertical 20-position SignalOn chassis if an external +24 VDC power source
is used.
Each RFSM or power supply occupies two positions in a chassis. Up to three RFSMs and one power supply, or two RFSMs
and two load-sharing, redundant power supplies can be installed in a horizontal 8-position (2RU) SignalOn chassis. Four
RFSMs may be installed in the horizontal 8-position SignalOn chassis if an external +24 VDC power source is used.
Switch modules are shown in Figure 1 and Figure 2.
1.1. Compatibility with RFWorx®Product Line
SignalOn switch modules, ampliers and power supplies may be installed in the same chassis as the SignalOn Passive
modules. They are not physically compatible with the earlier RFWorx®chassis.
SignalOn®Series – RF Switch Module User Manual 1-1
CHAPTER 1: GENERAL
Figure #1: Single RF Switch Module Figure #2: Dual RF Switch Module
SignalOn®Series – RF Switch Module User Manual 1-2
CHAPTER 1: GENERAL
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PRODUCT DESCRIPTION
2. Product Description
Primary function of the module is to monitor the RF signal gain on the operating primary “A” input, and switch to the backup
“B” input if the gain of the primary path rises, or falls below the calibrated RF input level of the unit. If the “A” input side goes
above, or falls below the threshold of the unit, the RFSM quickly switches the input from the failed input to the secondary
input. Switching occurs in less than 10 milliseconds. Switch status, failure LEDs, and RF level bar graphs are located on the
front panel of the switch module.
2.1. RFSwitchModuleCongurations
• Single Circuit Redundant RF Switch Module - BNC Connector
• Single Circuit Redundant RF Switch Module - F Connector
• Dual Circuit Redundant RF Switch Module - BNC Connector
• Dual Circuit Redundant RF Switch Module - F Connector
2.2. Features
• Continuous monitoring of primary and secondary paths
• Wide power detector range: >50 dBm
• Detects both high and low power failures
• User-selectable switching threshold: ±3 dB or ±6 dB
• Fail-over switching time <10ms
• Front-panel LED status and dual power level displays
• Alarm contact for remote failure monitoring
• Available in BNC and F-Connector congurations
• Single, or Dual modules
• Easily congured for redundancy or A-B switch applications
• Front panel bar graph display provides indication of RF power and switching threshold
• Indication of switch status provided by front panel LED and rear terminal block contacts
• Easily congured switching threshold levels via rear DIP switch
• One-step calibration
• Auto switch-back feature to primary input
• Built-in delay to prevent from false switching
• Automatic or Manual modes of operation
• Latching relays in signal path preserves service in case of power failure
SignalOn®Series – RF Switch Module User Manual 2-1
CHAPTER 2: PRODUCT DESCRIPTION
SignalOn®Series – RF Switch Module User Manual 2-2
CHAPTER 2: PRODUCT DESCRIPTION
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