Imagine Communications DDM 600 Tuner Demodulator Installation and Operation
Reklama
Reklama
Installation and Operation
DDM-600
Tuner Demodulator
Revision B
August 2016
DDM-600 Tuner Demodulator Installation and Operation
Publication Information
© 2016 Imagine Communications Corp.
Proprietary and Confidential.
Imagine Communications considers this document and its contents to be proprietary and confidential.
Except for making a reasonable number of copies for your own internal use, you may not reproduce this publication, or any part thereof, in any form, by any method, for any purpose, or in any language other than English without the written consent of Imagine Communications. All others uses are illegal.
This publication is designed to assist in the use of the product as it exists on the date of publication of this manual, and may not reflect the product at the current time or an unknown time in the future. This publication does not in any way warrant description accuracy or guarantee the use for the product to which it refers. Imagine Communications reserves the right, without notice to make such changes in equipment, design, specifications, components, or documentation as progress may warrant to improve the performance of the product.
Trademarks
Videotek™ and DDM-600 are trademarks or trade names of Imagine Communications or its subsidiaries.
Microsoft® and Windows® are registered trademarks of Microsoft Corporation. All other trademarks and trade names are the property of their respective companies.
Contact Information
Imagine Communications has office locations around the world. For domestic and international location and contact information, visit our Contact page (http://www.imaginecommunications.com/howbuy/contact-us).
Support Contact Information
For domestic and international support contact information see:
• Support Contacts (http://www.imaginecommunications.com/how-buy/contact-us)
• Worldwide Support e-mail (mailto: [email protected])
• Customer Community Portal (http://app.imaginecommunications.com/customercommunity)
• Warranty & Contract Information (http://www.imaginecommunications.com/services/customercare)
• MyImagine Academy Training (http://www.imaginecommunications-academy.com)
• Product Manuals (http://www.imaginecommunications.com/services/product-manuals)
© 2016 Imagine Communications Corp. Proprietary and Confidential. Revision B | Page 2
DDM-600
Installation and Operation Contents
Contents
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DDM-600
Installation and Operation Contents
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DDM-600
Installation and Operation
Preface
Preface
Manual Information
Purpose
This manual provides information about the DDM-600 Tuner Demodulator.
Audience
This manual is written for engineers and software developers who are responsible for third party control of the DDM-600 Tuner Demodulator.
Revision History
Revision History of Manual
Edition
A
B
Date
November 2012
August 2016
Revision History
Initial release
Rebranded
Writing Conventions
This manual adheres to the following writing conventions.
Writing Conventions
Term or Convention
Bold
Italics
CAPS
Code
>
Description
Indicates dialog box, property sheet, field, button, check box, list box, combo box, menu, submenu, window, list, and selection names
Indicates email addresses, names of books and publications, and first instances of new terms and specialized words that need emphasis
Indicates a specific key on the keyboard, such as ENTER,
TAB, CTRL, ALT, DELETE
Indicates variables or command-line entries, such as a DOS entry or something you type into a field.
Indicates the direction of navigation through a hierarchy of menus and windows.
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DDM-600
Installation and Operation
Term or Convention
hyperlink
Internet address
Note:
Description
Indicates a jump to another location within the electronic document or elsewhere
Indicates a jump to a Web site or URL
Indicates important information that helps to avoid and troubleshoot problems
Preface
Obtaining Documents
Product support documents can be viewed or downloaded from our website. Alternatively, contact your
Customer Service representative to request a document.
Operator’s Safety Summary
WARNING
These instructions are for use by qualified personnel only. To reduce the risk of electric shock, do not perform this installation or any servicing unless you are qualified to do so. Refer all servicing to qualified service personnel.
Important Safety Instructions
• Read these instructions.
• Keep these instructions.
• Heed all warnings.
• Follow all instructions.
• Do not use this apparatus near water.
• Clean only with dry cloth.
• Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
• Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus
(including amplifiers) that produce heat.
• Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade (or the third prong) is provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
• Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
• Only use attachments/accessories specified by the manufacturer.
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DDM-600
Installation and Operation Preface
• Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
Portable Cart Warning
• Unplug this apparatus during lightning storms or when unused for long periods of time.
• Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
• The device's IEC power connector shall remain readily accessible.
Ensuring Safety
• If this equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired.
• The unit should not be exposed to dripping or splashing, and no objects filled with liquids, such as vases, shall be placed on the unit.
• When the unit is to be permanently cabled, connect the protective ground conductor before making any other connections.
• Operate built in units only when they are properly fitted into the system.
• For permanently cabled units without built in fuses, automatic switches, or similar protective facilities, the AC supply line must be fitted with fuses rated to the units.
• Before switching on the unit, ensure that the operating voltage set at the unit matches the line voltage, if appropriate. If a different operating voltage is to be set, use a fuse with the appropriate rating. Refer to the Installation Instructions.
• Units of Protection Class I with an AC supply cable and plug that can be disconnected must be operated only from a power socket with protective ground contact:
Do not use an extension cable–it can render the protective ground connection ineffective.
Do not intentionally interrupt the protective ground conductor.
Do not break the protective ground conductor inside or outside the unit or loosen the protective ground connection; such actions can cause the unit to become electrically hazardous.
• Before opening the unit, isolate it from the AC supply. Then, ensure that
Adjustments, part replacements, maintenance, and repairs are carried out by qualified personnel only.
Safety regulations and rules are observed to prevent accidents.
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DDM-600
Installation and Operation Preface
Only original parts are used to replace parts relevant to safety (for example, the power on/off switches, power transformers, and fuses).
• Replaceable fuses can be hazardous when live. Before replacing a fuse, disconnect the AC power source.
• Imagine Communications does not recommend internal battery replacement by the user.
CAUTION
Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type.
• Use caution when cleaning the equipment; isopropyl alcohol or similar solvents can damage or remove the labels.
• Observe any additional safety instructions specified in this manual.
Explanation of Symbols
These symbols may appear on equipment:
Figure 1: Safety Symbols Appearing on Equipment
This product manual uses the following safety terms and symbols to identify certain conditions or practices.
Safety Terms and Symbols Appearing in the Product Manual
WARNING
Identifies conditions or practices that can result in personal injury or loss of life — high voltage is present. Uninsulated dangerous voltage within the product’s enclosure may be sufficient to constitute a risk of electric shock to persons.
CAUTION
Identifies conditions or practices that can result in damage to the equipment or other property. Important operating and maintenance (servicing) instructions are included in the literature accompanying the product.
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DDM-600
Installation and Operation
Certification Labels and Symbol Locations
Preface
On Imagine Communications equipment, certification labels and symbols are located on the back panel, rear chassis sides, or bottom rear of the chassis. On smaller space-restricted units, most labels and symbols can be found on the bottom rear of the chassis.
Directives and Compliances
This section provides information concerning Imagine Communications compliance with EU Directive
2002/95/EC and EU Directive 2002/96/EC.
Restriction on Hazardous Substances (RoHS) Directive
Directive 2002 / 95 / EC — commonly known as the European Union (EU) Restriction on Hazardous
Substances (RoHS) — sets limits on the use of certain substances found in electrical and electronic equipment. The intent of this legislation is to reduce the amount of hazardous chemicals that may leach out of landfill sites or otherwise contaminate the environment during end-of-life recycling. The
Directive, which took effect on July 1, 2006, refers to the following hazardous substances:
• Lead (Pb)
• Mercury (Hg)
• Cadmium (Cd)
• Hexavalent Chromium (Cr-V1)
• Polybrominated Biphenyls (PBB)
• Polybrominated Diphenyl Ethers (PBDE)
In accordance with this EU Directive, products sold in the European Union will be fully RoHS-compliant and "lead-free." Spare parts supplied for the repair and upgrade of equipment sold before July 1, 2006 are exempt from the legislation. Equipment that complies with the EU directive will be marked with a
RoHS-compliant symbol, as shown below.
Figure 2: RoHS Compliance Symbol
Waste from Electrical and Electronic Equipment (WEEE)
Directive
The European Union (EU) Directive 2002 / 96 / EC on Waste from Electrical and Electronic Equipment
(WEEE) deals with the collection, treatment, recovery, and recycling of electrical and electronic waste products. The objective of the WEEE Directive is to assign the responsibility for the disposal of associated hazardous waste to either the producers or users of these products. As of August 13, 2005, producers or users are required to recycle electrical and electronic equipment at end of its useful life,
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DDM-600
Installation and Operation Preface and must not dispose of the equipment in landfills or by using other unapproved methods. (Some EU member states may have different deadlines.)
In accordance with this EU Directive, companies selling electric or electronic devices in the EU will affix labels indicating that such products must be properly recycled. Contact your local Sales representative for information on returning these products for recycling. Equipment that complies with the EU directive will be marked with a WEEE-compliant symbol, as shown below.
Figure 3: WEEE Compliance Symbol
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DDM-600
Installation and Operation
Introduction
Introduction
Overview
The DDM-600 Tuner Demodulator receives 8-VSB RF terrestrial broadcast and converts it to DVB-ASI output. The unit is controlled via the Front panel, Web-GUI, or a serial (UART) port.
The DDM-600 is capable of receiving off-air channels 2 through 69. It displays the received channel, channel strength, and lock status on the front panel.
A single DVB-ASI output is provided from the rear of the unit. DDM-600 also has a fault relay output on the rear panel. Other connectors on the rear panel include RF input, Ethernet port, and serial port.
Features
Features of the DDM-600 include:
• High density installation 4 ATSC receivers in 1 RU in optional rack-mount
• Front panel Channel Entry / Channel Display / Signal Strength Display
• Supports ATSC 8VSB modulated transmissions
• Web browser interface for control and monitoring
• COMM port (Serial) interface
• DVB-ASI compliant output
• Fault relay interface
Options include:
• DDM-600-RM
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DDM-600
Installation and Operation
The DDM-600 front and back panels are illustrated below.
Introduction
Figure 4: DDM-600 Front and Back Panels
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DDM-600
Installation and Operation
Installation
This section provides information about inspecting, installing, and configuring the DDM-600.
Installation
Inspecting the Shipment
Before installing the DDM-600, inspect the box and the contents. Report any damage to the shipper, and
Note: Refer to the enclosed packing sheet for the latest list of items that are supplied with the unit.
The box contains:
• DDM-600 Tuner Demodulator
• DDM-600 Installation and Operation Handbook
• 6V DC power adapter with locking connector
Save the box and packing material for any future shipping requirements.
Installing the DDM-600
The following subsections provide instructions to rack mount the unit, connect the unit, and optionally configure the unit for remote control.
Rackmounting the DDM-600
Rack mounting the unit requires the DDM-600-RM optional rack mount which holds up to four DDM-600 units. It requires four 4-40 ¼ inch screws (supplied with rack tray).
To install the DDM-600 into the rack:
1. Place the DDM-600 onto the rack.
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DDM-600
Installation and Operation
2. Install four counter-sink screws in four corners from the bottom.
Installation
Figure 5: Mounting the DDM-600 into the DDM-600-RM
Parts Required to Mount the DDM-600 into the DDM-600-RM
Key Item Number Quantity Description
1 4-40 Phillips flat head screws 4
2 10-32 x .75 Phillips pan head screws 4
Used to mount the units onto the tray
Used to mount the tray assembly into the rack
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DDM-600
Installation and Operation
Connecting the DDM-600
Installation
The back panel connectors are illustrated the figure below. The function of each connector is described in the accompanying table.
Figure 6: DDM-600 Back Panel Connectors
6
7
4
5
2
3
Description of Back Panel Connectors
Key Item Description
1 RELAY Relay will close w hen the RF lock is lost
COMM*
ETHERNET*
6V-DC
RF-IN
9 pin, D sub, female connector for serial port
RJ45 female, 10/100 BaseT connection. The green LED illuminates when there is a valid Ethernet link. The yellow LED illuminates when data is
transmitted and received. See Ethernet Control (on page 19) for
Ethernet Setup information.*
Power
LOCK
ASI-OUT
F type female connector
When green, indicates that an input is present and active.
A female BNC connector
*See Pinouts (on page 29) for the connections.
Connecting the DDM-600:
1. Connect the supplied AC adaptor with the locking connector.
2. Connect an antenna.
3. Set the desired channel.
4. Route the DVB-ASI output as needed.
Power Connection
Plug in AC power to a source, 100 VAC to 240 VAC at 50 or 60 Hz.
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DDM-600
Installation and Operation
Serial Port
Installation
The serial port's baud rate is fixed at 115200, 8 bits, NO Parity, 1 Stop bit, flow control NONE. A terminal program such as "Tera-Term" can be utilized to communicate with the DDM-600. When power is first applied, the serial port reports the status as shown below.
Figure 7: Serial Port Reported Status
The serial port can be used to change channel, check lock status, change the Ethernet IP address etc.
All serial port commands can be found by typing help and <return>.
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DDM-600
Installation and Operation
This figure shows the Help command followed by a Channel Input command:
Installation
Figure 8: Help Command
Assigning the IP Address via the Serial Port
The DDM-600 provides a web browser interface with an Ethernet connection. To utilize the web
browser interface, see Ethernet Control (on page 19).
1. Prior to DDM-600 Network configuration, obtain Transmission Control Protocol/Internet Protocol
(TCP/IP) addresses from the System Administrator or from the Internet Service Provider (ISP).
These addresses are:
IP address
Subnet mask
Optional gateway IP
Port number
Be sure to record all addresses.
The IP address, subnet mask, and port number are always necessary.
The gateway address is not needed unless routing to an outside network.
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DDM-600
Installation and Operation
Record the addresses:
DDM-600 Interface Static IP Address
Installation
DDM-600 Interface Subnet Mask
Gateway IP Address
Port Number
The DDM-600 is shipped with the DHCP enabled. If a DHCP server is not found on the network, then the unit will default to IP address of 192.168.0.1
2. Connect the serial cable to a computer that is running a terminal program such as "Tera Term", hit a return to see a DDM_600> prompt.
3. Type the command IPsetup and enter the valid IP address.
For dynamic IP address, log in and assign the IP address of 0.0.0.0 on the config page. This will set the unit in DHCP mode.
For static IP address, log in and assign the static IP address as supplied by the network admin
4. Power cycle the unit.
The DDM-600 reports the IP address that it has been assigned or, if DHCP enabled, the unit sends the IP address obtained from the router (if present), if no router is found then the DDM-600 defaults to the IP address of 192.168.0.1
Note: The unit must be restarted to have the new IP address take effect.
After configuration, the DDM-600 is ready for web access.
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DDM-600
Installation and Operation
Operation
Operation
Front Panel Controls and Indicators
The front panel controls and indicators are illustrated below. Each control and indicator function is described in the accompanying table.
Figure 9: DDM-600 Front Panel Controls and Indicators
3
4
Key Label
1
2
PWR
RF LEVEL
CHANNEL
UP/DOWN
5 LOCK
Description
When lit, indicates the unit is powered on.
Indicates the signal level on the RF input.
Indicates the channel to be monitored.
Press UP to select a higher channel or DOWN to select a lower channel.
When illuminated, the LOCK LED indicates that an input is present and active.
Ethernet Control
The DDM-600 can be controlled remotely over a web interface. See Assigning the IP Address via the
The following topics illustrate the available web pages on DDM-600.
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DDM-600
Installation and Operation
Sign In
Figure 10: Sign In Page
1. Fill in the user name and password.
The default user name is admin and the default password is Harris1.
Use the Accounts page to modify the user names and passwords.
Status Page
Operation
Figure 11: Status Page
On the main s tatus page, you can see the channel number, signal level, and the state of the fault relay.
The status page allows the following functions:
• Change channel using up / down arrow buttons
• Check the signal levels and the state of fault relay
• Reset the fault relay if set
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DDM-600
Installation and Operation
Accounts Page
Operation
Figure 12: Accounts Page
Only the admin can add or delete up to four accounts. And only the admin can assign passwords.
Adding an Account
Only an administrator can change account names and passwords.
1. Log in as an administrator.
2. Type the name and passwords.
3. Click Apply Changes.
A valid non-admin user can perform all the tasks from the web interface except add or delete user accounts.
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DDM-600
Installation and Operation
Config
Operation
Figure 13: Config Page
On the config page you can assign the IP address of the web interface hardware and input SNMP information such as contact, name, and location.
Assigning the IP Address via the Web GUI
The DDM-600 is shipped with the DHCP enabled. If a DHCP server is not found on the network then the unit will default to IP address 192.168.0.1
1. Log in.
For dynamic IP address, assign the IP address of 0.0.0.0 on the config page.
This will set the unit in DHCP mode. ( When applied, this will change the IP address and connection to the unit will be lost)
For static IP address assign the static IP address as supplied by the network admin.
2. Click Apply Changes.
3. Click Restart the Application.
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DDM-600
Installation and Operation
4. Type in the new IP address in the URL of the browser window to again access the web GUI.
Operation
The web application must be restarted for the new IP address to take effect.
Note: If no router is found when DHCP is enabled, the DDM-600 will default to the IP address of
192.168.0.1
About
Figure 14: About Page
About page provides additional information about the hardware and software revisions of the unit. It also displays the IP address and whether it is static or dynamic.
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DDM-600
Installation and Operation
Troubleshooting
Troubleshooting
Overview
If the DDM-600 does not operate properly, first verify that:
• The DDM-600 is connected to a power source (100 - 240 VAC, 50/60 Hz nominal).
• All cables are correctly connected to the unit (see Connecting the DDM-600 (on page 15)).
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DDM-600
Installation and Operation
Specifications
Note: Specifications are subject to change without notice.
RF Input
Item
Input connector type
Input level
Tuning range
VSWR
Specification
F type female
-33dBmV to 48dBmV in 75 Ω
55 to 860 MHz (VHF 2-13 UHF 14 -69)
5
ASI Outputs
Item
Output connector type
Output level
ASI Jitter
Specification
1 BNC
800 mV typical
< 2 ns
Communication Interfaces
Item
Standard
Specification
• 1 Ethernet port RJ-45 10/100 Base-T (web browser control)
• 1 9 pin D sub for RS-232 serial communications
11520 Baud, 8 bit No parity
Specifications
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DDM-600
Installation and Operation
Front Panel Displays and Indicators
Item
Display
Specification
• 2 seven segment LEDs to display the selected RF channel
• 10 segment bar graph representing the received RF level
• LED indicators for Power, RF lock and ASI active out
Power
Item
Power connector
Power input
Power consumption
AC to DC power adaptor
Specification
Barrel type with lock
6 VDC + 1.2 VDC
< 3 W nominal
• Over-voltage protection
• Non-resetting fuse
• AC Adapter Included
• 100 to 240 VAC
• 0.3A
• 50 to 60 Hz
• Output: 6V DC @ 1.2 A max
Mechanical
Item
Dimensions Height:
Width:
Depth:
Weight
Specification
1.6 in. (4.06 cm)
4 in. (10.16 cm)
6 in. (15.24 cm)
1 lbs. (0.454 kg)
© 2016 Imagine Communications Corp. Proprietary and Confidential.
Specifications
Revision B | Page 26
DDM-600
Installation and Operation
Environmental
Item
Operating temperature
Specification
32° to 122° F (0° to 50° C)
Storage temperature -22° to 149° F (-30° to 65° C)
Humidity (non-condensing) Operating: 20% to 80%
Non-operating: 5% to 90%
Altitude (operating) 6562 ft (2000 m)
Standard Accessories
Item
Standard accessories
Specification
• Quick Start Guide
• AC to DC power adaptor
Options
Item
Options
Specification
• DDM-600-RM rack mount can support up to 4 units
Specifications
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DDM-600
Installation and Operation
Service Support
Service Support
For service and support, telephone the Imagine Communications Customer Service Department at
1-888-534-8246. If the problem cannot be resolved over the telephone and the instrument must be shipped to Imagine Communications for service or repair:
• Obtain a Return Authorization (RA) number from the Imagine Communications Customer Service
Department.
• Attach a tag to the unit with:
Your company name, address, and telephone number
The name of the contact person at your company
The RA number
The unit serial number
An explanation of the problem
To prevent shipping damage, pack the unit the same way Imagine Communications had packed it. If possible, use the original packing materials in the original shipping container.
Ship the unit to
Imagine Communications
(Address to be provided by Imagine Communications Customer Service Department)
Attn: RA xxxx (where x is the RA number) email: [email protected]
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DDM-600
Installation and Operation
Pinouts
Serial Connector
Figure 15: Serial 9-pin D-sub, Female Connector
6
7
8
9
2
3
4
5
Pinouts for the Serial 15 -pin D-Sub, Female Connector
Pin Number Signal Comments
1 NC Not connected
Rx
Tx
NC
GND
Receive
Transmit
Not connected
Ground
NC
NC
NC
NC
Not connected
Not connected
Not connected
Not connected
Pinouts
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DDM-600
Installation and Operation
Ethernet Connector
Figure 16: Ethernet Connector
3
4
1
2
ETHERNET Connector Pinouts
Pinout Signal
TX+
TX-
RX+
NC
Pinout
7
8
5
6
Signal
NC
RX-
NC
NC
Pinouts
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DDM-600
Installation and Operation
Glossary
Glossary
601: An international standard (ITU-R BT.601) for component digital television. It defines the sampling systems, matrix values, and filter characteristics for digital television.
8VSB: Vestigial sideband modulation with 8 discrete amplitude levels.
16 VSB: Vestigial sideband modulation with 16 discrete amplitude levels.
Advanced Television Systems Committee (ATSC): The parent organization that developed, tested, and described the form and function of the US digital television formats.
AES/EBU: A digital audio standard established jointly by the Audio Engineering Society (AES) and the
European Broadcasting Union (EBU).
AGC: Automatic gain control.
Artifacts: Unwanted visible effects in the picture created by disturbances in the transmission or image processing, such as edge crawl or "hanging dots" in analog pictures or "pixelation" in digital pictures.
Aspect Ratio: The ratio of horizontal to vertical dimensions. A square has an aspect of 1:1 since the horizontal and vertical measurements are always equal. Current television screen aspect ratios are 4:3 and 16:9.
Asynchronous Serial Interface (ASI): A transmission method adopted by the DVB, and called DVB-ASI.
The transmission method allows for the transport of varying data payloads in a constant data stream.
The DVB-ASI transport stream rate is 270 Mb/s.
Audio Breakaway: Routing video and accompanying audio in separate signal paths.
Audio-Follow: Routing video and accompanying audio together in the same signal path.
Auto Trans: Automatic transition. The execution of a single wipe or fade from current picture to another picture by way of an automatic device.
Bandwidth: The range of frequencies used to transmit information such as picture and sound.
Baseband Video: An unmodulated video signal.
Black: Also color black, blackburst. A composite color video signal that has the composite sync, reference burst, and a black video signal.
Blanking Processor: A circuit that removes sync, burst and blanking from the program video and then replaces it with sync, burst and blanking from the reference input. The process ensures constant sync and burst levels on program video.
BNC: Bayonet Neill Concelman.
Border: An electronically-generated picture member that is used in wipes to separate the two video sources used in the wipe. It is of even thickness and has color produced by the matte generator.
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DDM-600
Installation and Operation
Broadcast Legal: Encoding video signal parameters to conform to prescribed limits for broadcast.
Encoding rules vary by NTSC, PAL, country, and broadcast facility.
Glossary
BTSC: Broadcast Television Standards Committee. A US standard for stereo audio encoding in NTSC broadcast television.
CAV: Component Analog Video.
Chrominance: The color portion of a video signal that represents the saturation and hue. Black, gray and white have no chrominance; color signals have both chrominance and luminance.
Chrominance/Luminance Delay (C/L Delay): A measurement that indicates the amount to which chrominance and luminance are aligned with respect to each other. A low C/L delay figure can minimize the effects of ghosts or color offset on the received picture.
Clipping: The electronic process of shearing off the peaks of either the white or black excursions of a video signal for limiting purposes. Clipping often is performed prior to modulation to limit the signal.
CMRR: Common Mode Rejection Ratio.
Color Burst: The portion of a color video signal that contains a short sample of the color subcarrier. Used as a color synchronization signal to establish a reference for the color information following it; used by a color monitor to decode the color portion of a video signal. The color burst acts as both amplitude and phase reference for color hue and intensity. The color oscillator of a color television receiver is phase locked to the color burst.
Composite Sync: A signal consisting of horizontal sync pulses, vertical sync pulses and equalizing pulses only.
Composite Video: A single video signal that includes all color video and timing information. A composite signal includes luminance, chrominance, blanking pulses, sync pulses, and color burst information.
Crosspoint: An electronic switch, usually controlled by a button on the panel. Control logic allows for only one crosspoint, for each bus, to be switched "ON" at a time.
D/A: Conversion of digital to analog signals.
DA: Distribution Amplifier.
Data Element: An item of data as represented before encoding and after decoding.
dB: See decibel.
Decoded Stream: The decoded reconstruction of a compressed bit stream.
Decibel (dB): A logarithmic measure of the ratio between two powers, voltages, currents, sound intensities, etc. Signal-to-noise ratios are expressed in decibels.
Default: A factory preset value or condition.
Demodulator: A receiver, such as for television broadcast, cable, and closed circuit applications. A TV demodulator receives and processes of f-air or cable RF signals and provides baseband video and audio outputs.
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DDM-600
Installation and Operation Glossary
Differential Gain: A measurement that specifies how much the chrominance gain is affected by the luminance level. Expressed as a percentage showing the largest amplitude change between any two levels, it indicates how much color saturation variance occurs when the luminance level changes.
Differential Phase: A peak-to-peak measurement that specifies the extent to which the chrominance phase is affected by the luminance level. Expressed in degrees of subcarrier phase, it indicates how much hue shift occurs with luminance level changes.
Digital Video Broadcasting (DVB): A specific project office of the European Broadcast Union. This group has produced a set of digital broadcasting standards.
DSK: Down Stream Key, a keyer that is electronically located after (or "downstream from") all other functions of a switcher. The key resulting appears to be on top of all other pictures from the switcher.
DVB: See Digital Video Broadcasting.
D-VITC: Digital Vertical Interval Time Code. Time code information is stored on specific lines in the vertical blanking interval of a television signal.
EAV: End of active video in component digital systems.
EBU: European Broadcasting Union.
Editor: A device or system that controls video tape recorders, video switchers, and other related devices, to electronically splice segments of recorded video into a finished production.
EDH: Error Detection and Handling. A recommended practice defined in SMPTE RP 165. A system to generate and then detect video data errors in serial digital video systems.
Effects Keyer: A keyer that is electronically located in the mix/wipe generator portion of a switcher. The resulting key would appear under the down stream key.
EIA Rack Space or Rack Unit: A specific size as designated by the Electronics Industry Association. The rack unit is 19 inches wide, and is 1.75 inches tall. A device that requires three (3) EIA rack units is 19 inches wide and 5.25 inches (3x1.75 = 5.25) tall.
Elementary Stream (ES): A generic term for one of the coded video, audio or other variable length bit streams that are packetized to form MPEG-2 transport streams. Consists of compressed data from a single source (audio, video, data, etc.). One elementary stream is carried in a sequence of PES packets with one and only one stream ID.
Embedded Audio: Digital audio information multiplexed onto a serial digital data stream. Up to sixteen channels can be multiplexed on a single stream of 601 video, minimizing cabling and routing requirement.
ENG: Electronic News Gathering.
Encoded Clip Softness: In the encoded legalization process, "softness," as applied to encoded clips, refers to the processing of the video at the point of the clip. The clips are applied in YCBCR color space.
The clip point is either an immediate limit (no softness) or has a range of values leading to the clip point, all reduced to smooth the clip point to a less immediate limit (softness).
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DDM-600
Installation and Operation Glossary
Encoded Legalization: Limiting of the luminance and color difference signals such that, once encoded into a composite video signal, the resultant encoded video does not violate the maximum or minimum signal levels as defined by the specific encoding rules. NTSC and PAL video, plus various users of these types of video, have many varied rules for maximum and minimum encoding limits. Encoded legalization usually calculates first the encoded luminance value and then the corresponding chroma value to make legalization judgments.
Encoded Video: A combined single video signal that is constructed from either separate RGB or luminance and two color difference video signals. NTSC, PAL, and SECAM are all examples of encoded video.
Envelope Detection: An RF signal detection technique that does not respond to phase variations in the carrier signal, enabling measurement of a transmitter's incidental phase. When used together with synchronous detection, envelope detection helps isolate either video and/or RF as the causes of phase distortion.
External Key Input: This is an alternate source for key cut. This is usually a separate external input to a switcher.
Fade-thru-Black: A two-step process production technique. The first step fades the program video to black. The second step fades from black to the video selected on the preview bus. Usually used in major scene transitions.
Fade-to-Black: A production technique that simply fades the program video to black and the program audio to silent. Used to end programs and to escape from embarrassing pictures or sounds.
Field: A picture or picture portion produced within one cycle of vertical synchronization. In interlaced systems, a full picture or frame requires two consecutive fields.
FM Trap: A circuit designed to minimize potential interference from strong FM signals in receiving equipment, such as a TV demodulator. For example, an FM trap can attenuate signals between 88-108
MHz to reduce interference on NTSC television channel 6.
Frame: A single full resolution picture as viewed in either a video or a film system. In the case of interlaced video, two consecutive fields provide all of the information of one frame. In non-interlaced systems, one cycle of vertical synchronization produces a frame. A 60 Hz interlaced system, produces 30 frames of video in one second. A 60 Hz progressive (or non-interlaced) system produces 60 frames of video in one second. Common frame rates are 24 (film) 25, 29.97, 30, 50, 59.94 and 60.
Frame Synchronizer: An electronic device that synchronizes two or more video signals. Using one input as a reference, it locks a second signal to the reference.
Frame Store: An electronic method of capturing and storing a single frame of video.
Gamma: This term applies to the linearity of the change from black to white. Gamma controls adjust the gray or 50% point of the video either up or down, with the effect of changing the gray level of the video.
Gamut: The whole or total of whatever is being addressed. In color space, gamut refers to all colors that are included in a particularly defined color group, such as 601 gamut.
Genlock (Generator Lock): A method of synchronization involving the generation of a video signal that is time and phase locked with another signal.
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DDM-600
Installation and Operation
GPI: General Purpose Interface.
Glossary
Headend: In a cable TV system, the facilities where program sources (satellite, terrestrial, VTR, local) are received and remodulated for distribution through a cable plant.
High Definition Television (HDTV): High definition television has a resolution of approximately twice that of conventional television in both the horizontal (H) and vertical (V) dimensions and a picture aspect ratio (H to V) of 16:9.
High Level: A range of allowed picture parameters defined by the MPEG-2 video coding specification that corresponds to high definition television.
HRC: Harmonically-Related Carrier.
Hue: Color tint.
ICPM: Incidental Carrier Phase Modulation. A measurement of picture carrier phase distortion (affected by the video signal level) that occurs in the transmitter.
IRC: Incrementally-Related Carrier.
I.R.E.: Refers to the Institute of Radio Engineers, and is used as a unit of measurement. In NTSC television, 1 volt of signal equals 140 IRE units.
Key: An effect in television whereby a selected portion of background video is removed and replaced with another video.
Key Cut: In a key effect, this is the video that designates the portion of background video, which is removed.
Key Fill: In a key effect, this video replaces the removed portion of background video. This may be the same video as the Key Cut video.
Key Invert: In a key effect, this electronic action reverses the polarity of the key cut signal. It makes black appear as white, and white appear as black.
Key Mask: In a key effect, the key mask uses a wipe pattern from the wipe pattern generator to restrict the key cut from removing video in a portion of the screen. This action requires the use of both the wipe pattern generator and the Mask/Preset Size controls.
Key Source: Same as key cut.
Legalization: The modification of serial digital video to conform to analog color space rules, as required by users.
LCD: Liquid Crystal Display.
LED: Light-Emitting Diode.
LTC: Longitudinal Time Code. A SMPTE time code standard usually recorded onto the linear audio track of a VTR.
Luminance: The degree of brightness (black and white portion of the video signal) at any given point in the video image. A video signal is comprised of luminance, chrominance, and sync. If luminance is high,
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DDM-600
Installation and Operation Glossary the picture is bright; if low, the picture is dark. Changing the chrominance does not affect the brightness of the picture.
Main Level: A range of allowed picture parameters defined by the MPEG-2 video coding specification with maximum resolution equivalent to standard definition television.
Main Profile: A subset of the syntax of the MPEG-2 video coding specification that is supported over a large range of applications. Applications include MP@HL (Main Profile at High Level), and MP@ML
(Main Profile at Main Level).
Mask/Preset Size: Uses the wipe pattern generator in the keyer portion of the effects generator. Used to adjust the size of a preset pattern, or to adjust the size of a mask to block a portion of the key cut
(source) from use in the keyer.
Matte Generator: An internal generator that can make any color, is used for border color, and can be used for key fill. It is identical to the Color Background Generator, but simply used in other areas of the switcher.
Mbps: Megabits per second.
mV: Millivolts.
M/E: Mix/Effects System.
MP@HL: Main Profile at High Level.
MP@ML: Main Profile at Main Level.
MPEG: Refers to standards developed by the ISO/IEC JTC1/SC29 WG11, Moving Picture Experts Group.
MPEG-2: Refers to ISO/IEC standards 13818-1 (Systems), 13818-2 (Video), 13818-3 (Audio), and 13818-4
(Compliance).
Multi-Level Effects: Applies to any effects generator that can do more than one effect at a time.
Typically, a multi level switcher can produce a Key and a Background transition in the same effects generator at one time.
Non-Interlaced: Also "progressive scanning." A system of video scanning where lines of a picture are transmitted consecutively, such as with VGA monitor displays.
NTSC: National Television Systems Committee. The color television system used in the United States,
Canada, Mexico, and Japan.
Packet: A packet consists of a header followed by a number of contiguous bytes from an elementary data stream. It is a layer in the system coding syntax.
Packet Identifier (PID): A unique integer value used to associate elementary streams of a program in a single or multi-program transport stream.
Packetized Elementary Stream (PES): The data structure used to carry elementary stream data. The packets consist of a header followed by payload data; a stream is a series of packets that form an elementary stream and have a single stream identification.
PAL: Phase Alternation Line; the standard color television system in many European and other countries.
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DDM-600
Installation and Operation
PAT: See Program Association Table.
Glossary
Passive Looping: Video and audio signals routed through components, even if power is removed. Signals are not amplified or processed, maintaining transparency.
PCR: See Program Clock Reference.
Pedestal Level: An offset used in a video system to separate the active video from the blanking level by maintaining the black level above the blanking level by a small amount.
PES: See Packetized Elementary Stream.
Pixel: A Picture cell or Picture element representing one sample of picture information, such as an individual sample of R, G, B, luminance or chrominance.
PMT: See Program Map Table.
Preset: Refers to establishing any condition prior to use on the Program output. Used in reference to wipe patterns; often interchanged with "Preview."
Preview: The video output channel used to view the intended Program results prior to the execution of the next transition.
PRO Audio: A transmitted audio channel for talent cueing via Interrupt Foldback (IFB) to ENG vans and remote applications. Some demodulators support PRO audio monitoring.
Program: A transport stream combination of a video stream and one or more audio and data streams associated with that video stream. In analog terms, "Program" refers to the Base Band video and audio produced by the final output of a switcher.
Program and System Information Protocol (PSIP): Information sent out as part of an ATSC transport stream that lists all of the video, audio, data, and program information contained in the stream. This is the "TV guide" for a given stream.
Program Association Table (PAT): A list of all programs in the ATSC data stream.
Program Clock Reference (PCR): A time reference signal placed in MPEG streams to coordinate various data streams.
Program Map Table (PMT): A listing of all elementary streams that comprise a complete (television) program.
Progressive Scanning: Also "non-interlaced". A system of video scanning whereby lines of a picture are transmitted consecutively, as with VGA monitor displays.
PSIP: See Program and System Information Protocol.
Push-Push Toggle Switch: An electro-mechanical device which, when pushed, alternates the condition of the switch. Push once, it's off; push again, it's on.
Quadrature Output: An output in a television demodulator used for measuring Incidental Carrier Phase
Modulation (ICPM) in a transmitter.
QPSK: Quadrature phase shift keying; typically used by satellite downlinks.
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DDM-600
Installation and Operation Glossary
QAM: Quadrature Amplitude Modulation; The technique used by cable TV systems (64-QAM and 256-
QAM) to remodulate signals for distribution in a cable plant.
RGB Legalization: Limiting of luminance and color difference video signals such that, once transcoded into RGB component video signals, the resultant video does not violate the maximum or minimum signal levels as defined by component video level rules. Typically, the maximum value for R, G, or B is 700 mV, and the absolute minimum value for any of these signals is 0 mV.
Reclocking: The process of regenerating digital data with a clock recovered from the input data.
Resolution: A measure of the finest detail that can be seen, or resolved, in a reproduced image.
RS-422: Recommended Standard number 422. An E.I.A. standard that describes a type of data interchange. Television products use this standard as its communication format between the electronics frame and editors, control panel and computers. An RS-422 line may be extended up to 1,000 feet
(304m).
Sampling: Process by which an analog signal is sampled to convert the analog signal to digital.
SAP: Secondary Audio Program; used in television broadcast for second language broadcasting, simulcasting, and separate audio programming.
Saturation: Color intensity.
SAW Filter: Surface Acoustic Wave filter.
Segment Error Rate (SER): A calculated average of uncorrected transport stream packets vs. total packets as accumulated over a designated period.
SER: See Segment Error Rate.
Signal to Noise Ratio-Analog (SNR): A measurement of the noise level in a signal, expressed in dB
(decibels) as a ratio of between the audio or video signal's maximum peak-to-peak signal voltage and the measured voltage of noise present when the signal is removed. Higher SNR figures indicate that any noise introduced by system components is not be perceived in the picture and sound output signals.
Signal to Noise Ratio-8VSB (SNR): As applies to 8VSB transmissions, this is a calculated average power of the ideal signal divided by the actual demodulated signal power.
SMPTE: Society of Motion Picture and Television Engineers.
SNR: Signal to Noise Ratio.
Standard Definition Television (SDTV): Signifies a digital television system in which the quality is approximately equivalent to that of NTSC. This equivalent quality may be achieved from pictures originated at the 4:2:2 level of ITU-R BT.601 and subjected to processing as part of the bit rate compression. The results should be such that when judged across a representative sample of program material, subjective equivalence with NTSC is achieved. The displayed picture may be either the traditional 4:3 or the wide-screen 16:9 aspect ratio.
STL: Studio-transmitter link.
Synchronous Detection: A common detection technique used in television demodulators that removes quadrature distortion, enabling comparison of transmitter output with video input signal.
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DDM-600
Installation and Operation Glossary
S-Video: Also "Y/C." Transmits luminance and color portions separately via multiple wires, thus avoiding the color encoding process and resulting loss of picture quality.
Tally: A system used to light lamps and indicate usage. Most production switchers have an internal tally system to indicate selected functions, and which selected functions are currently involved with Program.
Telecine: A device used to convert film to video. Movie film is digitally sampled and converted to video frame by frame in real-time.
TCXO: Temperature Compensated Crystal Oscillator.
THD: Total Harmonic Distortion.
Transport Stream-ATSC (TS): Consists of the following: (1) Packets: 188 bytes, fixed length with descriptive data; (2) Carries several programs; (3) a PID that identifies the type of TS packet (video, audio, other); and (4) carries descriptive information about the program.
UHF: Ultra High Frequency.
Unity Gain: An electronic term indicating that a signal is neither amplified nor attenuated. One volt of signal level in results in one volt of signal level out.
Vector Clip: A special encoded clip version that limits only the CB and CR input video signals and does not affect (nor is it affected by) the luminance component. This color-only clip limits the maximum vector excursions as viewed in an encoded state and is intended for users who wish to prevent encoded vectors from ever exceeding the perimeter circle of an encoded vector display.
VHF: Very High Frequency.
VITC: Vertical Interval Time Code. A method for recording onto videotape the time code address for each video frame inserted in the vertical interval.
White Balance: An electronic process used to calibrate the picture for accurate color display in different lighting conditions.
White Level: The brightest part of a video signal, corresponding to approximately 1.0 Volt.
Wipe: A special effect in which two pictures from different video sources are displayed on one screen.
Production switchers and special effects generators provide numerous wipe patterns varying from simple horizontal and vertical wipes to multi-shaped, multi-colored arrangements.
XGA: High-resolution 1024x768 non-interlaced (progressive) display monitor.
YPBPR: CAV format composed of luminance (Y) and two color difference signals (PB and PR).
Y/C: Also "S-video." Describes the separation of video signal luminance and chrominance components.
Zero Carrier Pulse (chopper): In a TV demodulator, removes the carrier in the vertical interval for a short period, enabling depth of field measurement.
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DDM-600
Installation and Operation Index
Index
A
About screen • 23
Accounts page • 21
ASI output connector • 15
B
BNC connector • 15
C
Channel indicator • 19
Channel number • 20
Comm port connection • 15
Conditions, operational • 26
Configuration • 22
Control
Ethernet • 19
D
DHCP server • 22
Directives
RoHS • 9
WEEE • 9
E
Ethernet connector • 15, 25
Ethernet control • 19
F
Fault relay status • 20
G
Gateway IP • 17
H
Hardware revision number • 23
I
Input specifications • 25
IP address • 17 changing • 22 default • 22
L
Lock indicator • 19
Lock LED • 15
Log in • 22
M
Mechanical specifications • 26
N
Network configuration • 22
O
Operating conditions • 26
Optional gateway IP • 17
P
Password changing • 21 default • 20
Port number • 17
Power connector • 15
Power indicator • 19
R
Rackmounting • 27
Relay • 15
Reset fault relay • 20
RF input specifications • 25
RF level indicator • 19
RF-IN connector • 15
RJ45 connector • 15
S
Safety directives • 9
Serial connector • 25
Serial port configuration • 16 connector • 15
Sign in • 20
Signal level • 20
Software revision number, Revision numbers •
23
Status page • 20
Storage conditions • 26
Subnet mask • 17
Support documents • 6
T
Terms • 31
U
Up/down button • 19
User name changing • 21
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DDM-600
Installation and Operation default • 20
W
Web GUI configuration • 22
Index
© 2016 Imagine Communications Corp. Proprietary and Confidential. Revision B | Page 41
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