For Your Safety Explanation of Warning and Caution Icons Avoid personal injury and product damage! Do not proceed beyond any symbol until you fully understand the indicated conditions. The following warning and caution icons alert you to important information about the safe operation of this product: You may find this symbol in the document that accompanies this product.
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Operating the ICIM ..................... 3-12 Monitoring Operating Status Using the ICIM ..........3-16 Configuring the Prisma II bdr Transmit Processor Using the ICIM ..... 3-20 Checking bdr Transmit Processor Alarms Using the ICIM ......3-23 Checking Manufacturing Data Using the ICIM ..........3-29 Using the ICIM to Save the Configuration ............
Chapter 4 Operation Using the LCI Software LCI Introduction ..................... 4-3 System Requirements..................... 4-4 Installing LCI ......................4-5 Connecting Your Computer to the Chassis ............4-9 Starting LCI ......................4-10 LCI Device Tree Overview .................. 4-12 Accessing the Device Details Window .............. 4-14 Checking the Operating Status ................
Safety Precautions Protect Yourself From Electric Shock and Your System From Damage! This product complies with international safety and design standards. Observe all • safety procedures that appear throughout this guide, and the safety symbols that are affixed to this product. If circumstances impair the safe operation of this product, stop operation and •...
Safety Precautions, Continued Enclosure Do not allow moisture to enter this product. • Do not open the enclosure of this product unless otherwise specified. • Do not push objects through openings in the enclosure of this product. • Cables Always pull on the plug or the connector to disconnect a cable. Never pull on the •...
Compliance Laser and Electrical Safety UL 1419:1997: A sample of this equipment has been tested and found to meet the requirements of UL 1419:1997 CSA C22.2 No. 1:1998: A sample of this equipment has been tested and found to meet the requirements of CSA C22.2 No. 1:1998. 21 CFR: A sample of this equipment has been tested and found to meet the requirements of 21 CFR chapter 1, subchapter J.
Modifications Do not make modifications to this product without the approval of Cisco. Whenever modifications that may affect hazard levels are made to the optical fiber communication system, the person or organization that performs such modification must reassess hazard levels.
Continued Maximum Laser Power The maximum laser power that can be passed through this product, due to misadjustment or component failure, is 30 mW. Laser Warning Labels The Prisma II bdr Transmitter sub-module bears the following labels. 78-715192-01 Rev C...
Chapter 1 Introduction Overview Introduction This chapter introduces the front and back panels of the Prisma II Redundant Transmit Processor, the Prisma II bdr Transmitter sub-modules and presents a configuration overview. Qualified Personnel Only appropriately qualified and trained personnel should attempt to install this product.
Overview of the bdr Transmit Processor bdr Transmit Processor Overview The Prisma II optical network is an advanced transmission system designed to optimize network architectures and increase reliability, scalability, and cost effectiveness. The Prisma II bdr 2:1 Redundant Transmit Processor is designed to operate over a range of optical output powers and loss budgets, delivering both analog and digital signals.
ITU grid wavelengths are used for Dense Wave Division Multiplexing (DWDM) applications. On the receive end, typically in a large hub or headend, one or two Prisma II bdr Optical Receiver sub-modules located in a Prisma II bdr Receive Processor receive the optical signal and perform conversion back to the baseband data stream.
Overview of the bdr Transmit Processor, Continued Transmitter Block Diagram A block diagram of the Prisma II bdr 2:1 Redundant Transmit Processor with two Prisma II bdr Transmitter sub-modules is shown below. Transmit 0 to 10 dB Secondary Processor RF Input A...
The Front Panel of the Processor Illustration The front of the Prisma II bdr 2:1 Redundant Transmit Processor is shown below. Transmit Processor Front Panel Features Features of the Prisma II bdr 2:1 Redundant Transmit Processor are shown below. Feature...
The Front Panel of the bdr Transmitter Sub-Module Introduction The Prisma II bdr 2:1 Redundant Transmit Processor houses one or two Prisma II bdr Transmitter sub-modules. The processor creates a 2.5 Gbps digital representation of the RF reverse path signal and delivers it to the transmitter sub-module in PECL format.
The Front Panel of the bdr Transmitter Sub-Module, Continued The Bicolor LED The transmitter sub-modules incorporates a bicolor LED. The LED is an indicator of laser alarm conditions and DC power presence in the transmitter sub-module. The bicolor LED status is shown in the table below. Condition LED Status/Color DC Power OFF/optical output OFF...
The Product ID. Number is located on the side of each transmitter sub-module. The following table shows the Product ID. Number and how it represents the ITU channel, and wavelength of the Prisma II bdr Transmitter sub-modules. Product ID ITU Channel...
The Back Panel of the Processor Back Panel Connectors Self-mating connectors make it easy to install the Prisma II 2:1 Redundant Transmit Processor in the Prisma II Chassis. The chassis provides: RF signal input connection • Electrical power input connection •...
• The Prisma II Intelligent Communications Interface Module (ICIM) If an ICIM is installed in the Prisma II Chassis, it may be used to configure and monitor Prisma II application modules within its domain. For instructions on operating this module using the ICIM, refer to Chapter 3, Operation Using the ICIM.
Installation Overview Introduction This chapter contains instructions, site requirements, equipment, and tools needed to install the Prisma II bdr 2:1 Redundant Transmit Processor and Prisma II bdr Transmitter sub-modules. Qualified Personnel WARNING: Allow only qualified personnel to install, operate, maintain, or service this product.
Unpacking and Inspecting the Module As you unpack the module, inspect it for shipping damage. If you find any damage, contact Cisco. Refer to Chapter 6 for information on contacting Cisco’s for technical assistance. Equipment and Tools Needed Before you begin, make sure that the module is in good condition.
Association (EIA) equipment rack that properly houses the Prisma II Chassis with proper spacing for air circulation. For instructions on installing the chassis in the rack, refer to Prisma II Chassis Installation and Operation Guide, part number 713375. Operating Environment...
Power, RF input/output, and other connectors may be located on either the front or rear of the Prisma II Chassis. Connections to the chassis serve the same function and are made in the same manner regardless of the location of the connectors or chassis configuration.
Site Requirements, Continued Rear Access Chassis Illustration The Prisma II Chassis may be configured with front or rear connectors depending on the system you have purchased. The rear access chassis is shown here. Front Access Chassis Illustration The front access chassis is shown here.
RF Cable Connection Procedure Follow this procedure to make the RF cable connections for the transmit processor. Locate the RF ports of the corresponding slot where the Prisma II bdr Transmit Processor is to be installed. Attach one 75 ohm RF cable to Port A connector (RF output 1) of the corresponding slot where the module is to be installed.
Installing the Module in the Chassis Installing the Module Important: The following procedure assumes the Prisma II Chassis is mounted in a rack. This procedure applies to both chassis styles. To install the transmit processor in the chassis, follow these steps.
Installing the Module in the Chassis, Continued Gently slide the processor into the chassis until you feel the power and communications connections on the back of the processor join connectors on the backplane. Use the module ejectors on the left side of the module to lock the module in place.
Connecting Optical Cables The Fiber Fish Tool The Fiber Fish tool that was shipped along with the Prisma II Chassis is used to pull an optical cable from the rear of the chassis to the front of the chassis so the optical cables can be connected to optical connectors on the front panel of the Prisma II modules.
Connecting Optical Cables, Continued Using the Fiber Fish to Pull the Optical Cable to the Prisma II Module Important: Use a protective cap to protect the end of the fiber while the fiber is being fished (or handled in general).
Continued Cable Connection Procedure Important: This procedure assumes that the Prisma II 1310 nm bdr Transmitter sub- module has not been installed in the Prisma II bdr Transmit Processor. Follow this procedure to make the optical cable connections for each transmitter to be installed.
Installing Sub-Modules in the Processor Installing the Sub-Module Important! For best results, install the Prisma II bdr Transmit Processor into the Prisma II Chassis before installing the transmitter sub-modules into the processor. To install the sub-module in the processor, follow these steps.
Installing Sub-Modules in the Processor, Continued Sub-Modules Installed After you have installed both Prisma II bdr Transmitter sub-modules into the bdr Transmit Processor, the assembly will appear as shown below. 78-715192-01 Rev C Installation 2-13...
EM IN/EM OUT cable. This cable is a standard “off the shelf” serial extension cable, DB9 Female to DB9 Male. This cable can be purchased at your local computer store. The Cisco part number for a 6-foot DB9 Female to DB9 Male extension cable is 180143.
A connection is required from the first chassis containing an ICIM to the TNCS system. The Prisma II Cable Kit (738686) is required for this connection. Connect this cable to the EM IN of the first chassis containing an ICIM.
Operation Using the ICIM Overview Introduction The procedures in this chapter apply if you are using the Prisma II Intelligent Communications Interface Module (ICIM) to configure and operate the Prisma II bdr 2:1 Redundant Transmit Processor. Scope of This Chapter...
LCD display. Important: Do not operate any Prisma II Chassis without a fan tray installed properly. If a fan tray is not installed in the Prisma II Chassis, the ICIM will not communicate with any of the modules in that chassis.
The ICIM Front Panel ICIM Front Panel Illustration The following illustration shows the front panel of the ICIM. 78-715192-01 Rev C Operation Using the ICIM...
The ICIM Front Panel, Continued ICIM Front Panel Features Part Function LCD screen Displays the ICIM menus, alarms, and status information. 12-key numeric Used to navigate the ICIM’s menus and configure the keypad application modules. Ethernet Connector Directly connects the ICIM to a network (future release). The ICIM LCD The ICIM LCD is the operator’s visual link to the ICIM software.
The ICIM Front Panel, Continued The ICIM Key Pad The ICIM keypad has twelve keys that allow you to input and monitor operational parameters. The table below lists each key and a brief description of its function. Button Function Displays status information for the selected module STAT Displays configuration information for the selected module Displays all of the parameters in alarm for a selected module...
The ICIM allows you to send configuration commands, to change alarm thresholds, and restore factory default settings in Prisma II modules. In order to ensure that no unauthorized changing of these parameters occurs, you have the option of using a password protection system.
Accessing the Password Function The Password menu allows you to create, enter, change, or disable the user password. It also allows service personnel to use the Cisco (SA) password. To access the Password menu, follow the steps below. Press the key.
The ICIM Password, Continued Using Your Password for the First Time Important: To enter a User password in an ICIM that has never had the User password function implemented, follow the steps in the procedure below. Access the password function as shown in Accessing the ICIM Password Function.
The ICIM Password, Continued Re-Entering a User Password If more than 10 minutes has passed since your last keystroke, and you attempt to make any changes to system parameters, the menu displays Psw Expired. If you attempt to disable the password, the menu displays Failed, Password Not Active. When either of these messages is displayed, you must re-enter the User password as outlined in the steps below.
The ICIM Password, Continued Changing the User Password Important: The current User password must be active prior to changing it. If the current password has expired (more than 10 minutes have passed since your last keystroke), you must re-enter the current password before changing to a new one. Follow the steps below to change the User password.
The ICIM Password, Continued Disabling the User Password If a User password has been entered, you may disable it at any time. However, the current password must be active prior to disabling it. If the current password has expired (more than 10 minutes have passed since your last keystroke), you must re- enter the current password before disabling it.
Operating the ICIM Using the ICIM Once the module is installed as described in Chapter 2, it runs without the aid of an operator. Unless alarms are generated or your system configuration changes, you should not need to make any adjustments to the module beyond the initial setup. Accessing the ICIM LCD Contrast To access the ICIM LCD contrast control from the MAIN menu, press the key.
Operating the ICIM, Continued Prisma II ICIM Menu To display the ICIM menu, press the key. The ICIM menu (shown below) is ICIM displayed. Press the key to select the specific option. Display Description Shelf Displays the location of the ICIM module.
Operating the ICIM, Continued Prisma II MAIN MenuStructure MAIN Pressing the key initiates the MAIN software menu. Pressing the ICIM initiates the ICIM software menu. The MAIN and ICIM software structures are shown below. ICIM Key MAIN Key ICIM MAIN...
Operating the ICIM, Continued Prisma II bdr Transmit Processor Software Menu Structure From the MAIN or SCROLL menus, you can navigate to the Prisma II bdr Transmit Processor MODULE menu. From the MODULE menu, press the , or STAT ALRM key to display the desired parameter menu.
Monitoring Operating Status Using the ICIM Monitored Parameters You can monitor the status of operating parameters. The table below describes the monitored parameters for this module. Parameter Units Function +1_8VInt 1.8 voltage level internal to the transmit processor. +3_3VInt 3.3 voltage level internal to the transmit processor. Las1Inst 0 Inst or Indicates if transmitter sub-module is installed.
Monitoring Operating Status Using the ICIM, Continued Parameter Units Function NoiseSup ON or Displays status of noise suppression. RednMode YES or Redundant mode. When YES, the module will generate an alarm if either transmitter is removed. Laser1 Enable/ Status of transmitter 1 (top). Disable Laser2 Enable/...
Monitoring Operating Status Using the ICIM, Continued Checking Operating Status Using the ICIM, you can check the status of all operating parameters of this module. To monitor the module operating parameters, follow these steps. From the MAIN menu, press the key to highlight Shelf and Slot fields.
Monitoring Operating Status Using the ICIM, Continued S T A T U S S T A T U S S T A T U S S T A T U S - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
Configuring the Prisma II bdr Transmit Processor Using the ICIM Configurable Parameters Configurable parameters for this module include the following. Parameter Function Values Default Clk_Src Indpend = The transmitter generates the Indpend Indpend clock signal but does not send it outside the Master module.
Configuring the Prisma II bdr Transmit Processor Using the ICIM, Continued Configuring Parameters Using the ICIM, you can configure the parameters listed above. To configure the parameters, follow these steps. CONFIG parameters are listed after these procedures. From the MAIN menu, press the key to highlight the Shelf and Slot ...
Configuring the bdr Transmit Processor Using the ICIM, Continued CONFIG Menus Some typical Prisma II bdr Transmit Processor CONFIG menus are shown below. C O N F I G C O N F I G C O N F I G...
Checking bdr Transmit Processor Alarms Using the ICIM Checking Alarms If the red ALARM LED on the front panel is blinking a minor alarm condition is indicated. If the red ALARM LED on the front panel is illuminated, a critical alarm conditions is indicated.
Checking bdr Transmit Processor Alarms Using the ICIM, Continued Alarm Data Display The alarm data for this module is shown below. These alarms are not adjustible. Alarm Alarm Condition Indication Possible Cause Indicates that the Fault Hardware failure. FPGA can be read FPGA and written.
Checking bdr Transmit Processor Alarms Using the ICIM, Continued Alarm Alarm Condition Indication Possible Cause Lsm2Temp Laser 2 Fault Ensure transmitter is temperature is out within temperature specs of spec. and laser has had a chance to stabilize. +1_8VInt Internal 1.8 Hardware failure.
Checking bdr Transmit Processor Alarms Using the ICIM, Continued Alarm Thresholds Alarm thresholds are shown below. Alarm thresholds are not adjustable on this module. Major Minor Minor Major Alarm Function High High Unit Thhold Thhold Thhold Thhold Typical range +1_8VInt Internal 1.8 1.620 1.67...
Checking bdr Transmit Processor Alarms Using the ICIM, Continued bdr Transmit Processor ALARM Menus When a module’s ALARM menu is selected, press the key or the key to scroll through alarms. Some typical ALARM menus are shown below. A L A R M S A L A R M S A L A R M S...
Checking bdr Transmit Processor Alarms Using the ICIM, Continued A L A R M S A L A R M S A L A R M S A L A R M S - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
Checking Manufacturing Data Using the ICIM Checking Manufacturing Data The manufacturing data (MFG. DATA) information listed above may be displayed on the ICIM menu. To access the module’s manufacturing data, follow these steps. From the MAIN menu, press the key to highlight the Shelf and Slot ...
Manufacturing Data Display The table below describes the manufacturing data available for this module. Manufacturing Data Expanation Module Type Cisco module type number. Serial # The alphanumeric device serial number. Date Code Code describing year and month of module manufacture.
Checking Manufacturing Data Using the ICIM, Continued M F G . D A T A M F G . D A T A - - - - - - - - - - - - - - - - - - - - S h e l f S h e l f S l o t...
Using the ICIM to Save the Configuration Saving the Current Configuration To save the current module configuration, follow these steps after every change. After you have changed a parameter or entered data, press the key to ENTER save the changes and return to the MAIN menu. If you do not save your changes for two minutes, or if you press the SHIFT keys at the same time, changes are aborted and the display returns to...
Overview Introduction The installation steps and the procedures in this chapter only apply if you are using the Local Craft Interface (LCI) software to operate the Prisma II bdr 2:1 Redundant Transmit Processor. Scope of This Chapter Included in this chapter are LCI installation instructions and detailed descriptions of how to use LCI to view and modify information for the transmitter.
Overview, Continued Topic See Page Checking the Operating Status 4-17 Configuring the bdr Transmit Processor 4-19 Checking bdr Transmit Processor Alarms 4-21 Checking Device Properties 4-23 WARNING: Avoid damage to your eyes! Do not look into any optical connector while the system is active.
LCI Introduction LCI Function The LCI software functions as a user interface for the Prisma II platform. The LCI software operates on a computer, which is connected to a Prisma II Chassis. Using the LCI software, you can configure and monitor the modules in the chassis the computer is connected to.
The required cable is a standard “off the shelf” DB9 Female to DB9 Male serial extension cable. The connectors are a serial 9-pin D-shell (EIA 574/232). The Cisco part number for a six-foot DB9 Female to DB9 Male extension cable is 180143.
Installing LCI Introduction This section describes how to install the LCI software. Installing the LCI Software To install the LCI software, follow these steps. Close all programs that are running on your computer. Insert the LCI CD-ROM into your CD-ROM drive. Result: The LCI Installation program starts automatically.
Installing LCI, Continued Read the license agreement. Click Yes to accept the license agreement. Click No to cancel the setup. Result: The License Agreement Confirmation dialog box displays. Click Yes. Result: The Destination Folder screen displays. Operation Using the LCI Software 78-715192-01 Rev C...
Installing LCI, Continued Do you want to install the LCI software in the specified Destination Folder? • If yes, click Next to begin the installation, and go to step 10. • If no, click Browse, and go to step 7. To specify where you want the LCI software to be installed, type the path in the Path box, or select it in the Directories box.
Installing LCI, Continued Click Finish. Note: You have the option to select the Do not display LCI for Prisma II information check box. This bypasses the registration card that you can fill out to receive product updates. Result: The last installation wizard screen displays after the installation is complete.
Connecting Your Computer to the Chassis Introduction Before you start the LCI software, you must first connect your computer to the chassis that contains the module(s) you want to communicate with. Important: The LCI software communicates only with those modules located in the chassis your computer is attached to.
Starting LCI Introduction When you start the LCI software, it queries the devices (modules) located in the chassis that is connected to your computer. After this query process (referred to as the learn mode), the LCI software does the following for each device it finds. •...
Starting LCI, Continued Click Start. Result: The LCI software polls the modules in the chassis. Click OK when the LCI software finishes the query process. Result: The chassis appears in the device tree of the main LCI window. 78-715192-01 Rev C Operation Using the LCI Software 4-11...
Module(s) located within the chassis. Each device is of the format chassis slot location (device name). Example: In the graphic above, S10 (Transmitter) represents a Prisma II bdr Transmit Processor that is located in slot 10 of the chassis. 4-12...
LCI Device Tree Overview, Continued Device Information Information about a device (its parameters, alarms and statuses) is located in the Device Details window. Within the device tree, you can access this window using one of the following four methods: • Double-click the chassis and select the device in the graphic that displays •...
Information about a device (its parameters, alarms, and status) is located in the Device Details window. The graphic below shows the Device Details window for a Prisma II bdr Transmit Processor. Within the LCI device tree, you can access this window using one of the following four methods: •...
Accessing the Device Details Window, Continued Right-Click the Chassis To access the Device Details window, perform these steps. Right-click the chassis, and click Open. Result: A graphic representation of the chassis displays. 78-715192-01 Rev C Operation Using the LCI Software 4-15...
Accessing the Device Details Window, Continued Double-click the device whose information you want to view and/or configure. Result: The Device Details window displays. Proceed with viewing and/or configuring information. 4-16 Operation Using the LCI Software 78-715192-01 Rev C...
Checking the Operating Status Introduction Using the LCI software, you can check the status of all operating parameters of the bdr Transmit Processor. Monitored Parameters The table below describes the monitored parameters for the bdr Transmit Processor. Parameter Units Function Module 1.8 Voltage 1.8 Voltage level internal to the processor.
Checking the Operating Status, Continued Checking the Operating Status To monitor the Prisma II bdr Transmit Processor operating parameters, follow these steps. Access the Device Details window. The monitored parameters are displayed under Parameters and Status. Proceed with checking the operating parameters.
Configuring the bdr Transmit Processor Introduction Using the LCI software, you can configure the parameters listed below. Configurable Parameters Configurable parameters for the Prisma II bdr Transmit Processor are listed below. Parameter Function Values Default Redundant The typical number of...
Configuring the bdr Transmit Processor, Continued Configuring Parameters To configure the parameters, follow these steps. Access the Device Details window. The Device Details window displays. Under Controls, double-click the parameter you want to configure. Result: The Change Value dialog box displays. The graphic below shows the dialog box for the Redundant Mode parameter.
Checking bdr Transmit Processor Alarms Introduction Alarms that you can check using the LCI software are listed below. Alarm Alarm Condition Indication Possible Cause Module 1.8 1.8 Voltage fault Alarm 1.8 Voltage level internal to Voltage the receiver too high or low.
Checking bdr Transmit Processor Alarms, Continued Alarms Limits Alarms limits fall into one of the following categories. • Major low • Minor low • Minor high • Major high Checking Alarms To check a parameter’s alarm status, perform these steps. Access the Device Details window.
The alphanumeric device serial number Time of Service Number of hours devise has been in operation Day Code Code describing year and month of manufacture Module Type Cisco device type number 78-715192-01 Rev C Operation Using the LCI Software 4-23...
Checking Device Properties, Continued Checking Properties To access the module’s properties, perform these steps. Access the Device Details window. The device properties are displayed under Properties. Proceed with viewing the properties. 4-24 Operation Using the LCI Software 78-715192-01 Rev C...
Chapter 5 Maintenance and Troubleshooting Overview Introduction This chapter provides information to assist you in maintaining and troubleshooting the Prisma II bdr 2:1 Redundant Transmit Processor. Qualified Personnel Only appropriately qualified and trained personnel should attempt to troubleshoot this product. WARNING: Allow only qualified personnel to install, operate, maintain, or service this product.
Module Maintenance Maintaining the Prisma II Module To extend the life of the module and ensure optimal performance, the following maintenance is recommended. Frequency Maintenance Required Weekly Check all parameters and test points. • • Record data. • Make repairs and adjustments as needed.
General Troubleshooting Information Introduction This troubleshooting information describes the most common alarms and gives typical symptoms, causes, and items to check before consulting Cisco. Equipment Needed You need fiber connector cleaning materials to clean fiber connectors. Additional Assistance If you need additional assistance, telephone one of our Technical Service Centers or your local sales subsidiary.
Troubleshooting Alarm Conditions ICIM Alarm Conditions If the red ALARM indicator is illuminated or is blinking, check the ICIM to determine the cause of the alarm. Blinking = minor alarm, steady illumination = major alarm. Alarm Alarm Condition Indication Possible Cause FPGA Indicates that the FPGA Fault...
Troubleshooting Alarm Conditions, Continued Alarm Alarm Condition Indication Possible Cause Lsm2Temp Laser temperature is Fault Ensure transmitter sub-module out of spec. 2 is within temperature specs and laser has had a chance to stabilize. +1_8VInt Internal 1.8 Voltage Minor L or H Hardware failure Major L or H +3_3VInt...
Troubleshooting LCI Introduction When you start the LCI software, it queries the modules located in the chassis that is connected to your laptop computer. After this query process (referred to as the learn mode), LCI displays the modules in its module tree. At times, you might notice that only some of the modules display, or maybe none at all.
Troubleshooting LCI, Continued Under Interface, double-click Communications Port. Result: The Change Value dialog box displays. In the Command to box, specify the com port on your computer that the chassis is connected to. Type the word “com” and then the port number. Example: To specify com port 1, type COM1.
Troubleshooting LCI, Continued Click Execute. Result: The com port number displays in the Communications Port field. Exit LCI and then restart it for the change to take effect. Result: Your modules now display in the module tree. If some of your modules are missing from the tree, proceed to Only Some of the Modules Display in the Module Tree.
Troubleshooting LCI, Continued Only Some of the Modules Display in the Module Tree If some, but not all, of your modules display in the module tree, the cause may be that a device has been added since the software last polled the chassis. Follow these steps to refresh the display.
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Glossary Term, Acronym, Meaning Abbreviation Ampere (amp) is the unit of measure for electrical current. Alternating current Analog to digital Addressable The ability to control an individual unit in a system of many similar units. Automatic Frequency Control Automatic Gain Control Amplitude Modulation Amplifier Cascade Two or more amplifiers in a series, the output of one...
Glossary , Continued Bit error rate BERT Bit error rate test Broadband Integrated Gateway Basic Input/Output System BIOS BIST Built-in self-test Short for Binary Digit. Can be either a "one" or a "zero." Blanking level The amplitude of the front and back porches of the composite video signal.
Glossary , Continued Compression The non-linear change of gain at one level of a signal with respect to the change of gain at another level for the same signal. Also, the elimination of redundant information from an audio, data, or video signal to reduce transmission requirements.
Glossary , Continued Distribution System Part of a cable system consisting of trunk and feeder cables used to carry signals from headend to subscriber terminals. A device that converts an input signal to a lower frequency Downconverter output signal. Down link A transmission path carrying information from a satellite or spacecraft to earth.
Glossary , Continued Equalization The process of compensating for an undesired result. For example, equalizing tilt in a distribution system. Effective radiated power FAOC Frequency agile output converters Field-effect transistor FIFO First in, first out Frequency modulation Forward path Signal direction from the headend to the set-top terminal. Fabry-Perot laser FPGA Field Programmable Gate Array.
Glossary , Continued ft-lb Foot-pound. A unit of work equal to lifting one pound of weight, one foot in distance. File Transfer Protocol Gain An increase in signal relative to a reference Gbps Gigabits per second Headend Location and equipment that receives data from a satellite (or other) source and reformats that data for input to a broadband distribution network.
Glossary , Continued Local craft interface Light-emitting diode LIFO Last-in, first-out Low-noise amplifier Low-noise block converter Low-noise converter Mbps Megabits per second Master Control Unit Multipath (multipath The phenomenon which results from a signal traveling transmission) from point to point by more than one path so that several copies of the signal arrive at the destination at different times or at different angles.
Glossary , Continued Phase Lock Loop. An electronic servo system controlling an oscillator to maintain a constant phase angle relative to a reference signal. PROM Programmable Read Only Memory Printed wiring board Quadrature Amplitude Modulation Quadrature Partial Response QPSK Quadrature Phase-Shift Keying Reverse conditioner Redundant A secondary or backup (electronic) system...
Glossary , Continued Scattering Random directional change of a wave or part of a wave caused by an irregular reflecting surface or by passing through an inhomogeneous transmission medium. Signal level meter Status monitor Status monitoring and control SMIU Status Monitor Interface Unit Server Management Unit S/N or SNR Signal-to-noise ratio...
Glossary , Continued TTCN True tilt correction network Transmit or transmitter Unbalanced triple Un-interruptible power supply Upstream Signal transmission toward the headend Unshielded twisted pair One millionth of a volt (microvolt) Volt V AC Volts alternating current Variable bit rate Voltage controlled attenuator V DC Volts direct current...
Index alarms menu checking using ICIM, 3-23 ALARM using ICIM, 3-27 thresholds, 3-26 CONFIG using ICIM, 3-22 ICIM, 3-13 ICIM menu structure, 3-14 MAIN using ICIM, 3-12 chassis software menu structure, 3-15 illustration, 2-5 Module Maintenance, 5-2 compliance electromagnetic compatability, viii laser &...
Index , Continued transmitter sub-module features, 1-6 warning front panel, 1-6 labels, x identification, 1-8 radiation, ix troubleshooting warranty, xi alarm conditions, 5-4 general, 5-3 Index-2 78-715192-01 Rev C...
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