Auraria Campus Television Standard

Auraria Campus Television Standard        

PART 1 - GENERAL

1.1             RELATED DOCUMENTS

A.         Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2             SUMMARY

A.         Section Includes:

1.         Fiber and coaxial equipment used for distribution of signals using the campus television service as the signal source.

2.         Distribution components.

1.3             DEFINITIONS

A.         Agile Receiver:  A broadband receiver that can be tuned to any desired channel.

B.         A/V:  Audio/Visual.

C.        Broadband: For the purposes of this Section, wide bandwidth equipment or systems that can carry signals occupying in the frequency range of 54 to 1002 MHz.  A broadband communication system can simultaneously accommodate television, voice, data, and many other services.

D.        Carrier:  A pure-frequency signal that is modulated to carry information.  In the process of modulation, the signal is spread out over a wider band.  The carrier frequency is the center frequency on any television channel.

E.         CATV:  Community antenna television.  A communication system that simultaneously distributes several different channels of broadcast programs and other information to customers via a coaxial cable.

F.         CCTV:  Closed-circuit television.

G.        CEA:  Consumer Electronics Association.

H.        dBmV:  Decibels relative to 1 mV across 75 ohms.  Zero dBmV is defined as 1 mV across 75 ohms.  dBmV = 20 log 10(V1/V2) where V1 is the measurement of voltage at a point having identical impedance to V2 (0.001 V across 75 ohms).

I.           Headend:  The control center of the MATV system, where incoming signals are amplified, converted, processed, and combined into a common cable along with any locally originated television signals, for transmission to user-interface points.  It is also called the "central retransmission facility."

J.         I/O:  Input/Output.

K.         MATV:  Master antenna television.  A small television antenna distribution system usually restricted to one or two buildings.

L.         RF:  Radio frequency.

M.        User Interface:  End point of Contractor's responsibility for Work of this Section.  User interfaces are the 75-ohm terminals on device plates.

1.4             SYSTEM DESCRIPTION

A.         System shall consist of locally originated campus television signals and a fiber and coaxial cable distribution system.

1.         Headend equipment shall consist of receiving antennas, satellites, and associated signal distribution amplification and equalization.  Headend equipment is existing and not part of the work covered by this specification.

2.         Cable distribution system consisting of coaxial cables, user interfaces, signal taps and splitters, RF amplifiers, signal equalizers, power supplies, and required hardware, complying with CEA-310-E and CEA-2032 and resulting in performance parameters specified in this Section.  System shall be capable of distributing television channels according to CEA-542-B.

B.         Hardware Requirements:  Use plug-in, modular, solid-state electronic components.  Mount amplifiers and other powered equipment in standard 19-inchequipment racks complying with CEA-310-E.

1.5             PERFORMANCE REQUIREMENTS

A.         Minimum acceptable performance of distribution system at all user-interface points shall be as follows:

1.         Nominal Level at User Interface (TV outlet):  Between 10 and 15 dBmV.

2.         System Response - plus or minus 1.5 dB within any channel.

3.         Signal to Beat Interference - Greater than or equal to 60 dB.

4.         Radiation (within FCC specifications) - Less than 20 µv/m low band and 50 µv/m high band on a tuned dipole at 10 feet.

5.         Relative Video-Carrier Level:  Within 3 dB to adjacent channel.

6.         Carrier Level Stability, Short Term:  Level shall not change more than 0.5 dB during a 60-minute period.

7.         Carrier Level Stability, Long Term:  Level shall not change more than 2 dB during a 24-hour period.

8.         Channel Frequency Response:  Across any 6-MHz channel in the 54- to 220-MHz frequency range, referenced to video; signal amplitude shall be plus or minus 1 dB, maximum.

9.         Carrier-to-Noise Ratio:  45 dB or more.

10.      RF Visual Signal-to-Noise Ratio:  43 dB or more.

11.      Antenna Combiner Insertion Loss:  40 dB maximum.

12.      Signal Power Splitter and Isolation Tap Return Loss:  17 dB maximum.

13.      Cable Connectors Attenuation:  Less than 0.1 dB.

1.6             SUBMITTALS

A.         Product Data:  For each type of product indicated.

B.         Shop Drawings:  For headend and distribution system.  Include plans, elevations, sections, details, and attachments to other work.

1.         Show fabrication and installation details for television equipment.

2.         Wiring Diagrams:  For power, signal, and control wiring.  For UTP or fiber-optic cable, include cross connects, patch panels, and patch cords.

C.        Samples:  Full size for each outlet device plate in required colors and textures.

D.        Design Calculations:  Calculate signal attenuation budget and show calculated line and equipment losses for the system based on the functional block diagram, to show that proposed system layout can be expected to perform up to specification.  Calculate signal strength from sources to headend input points for each antenna, satellite dish, and CATV grouping.  Allowable losses between components and user interface shall be used to determine size and type of coaxial cable.

E.         Coordination Drawings:  Include dimensioned plan and elevation views of components and enclosures.  Show access and workspace requirements.

F.         Equipment List:  Include each piece of equipment and include model number, manufacturer, serial number, location, and date of original installation.  Insert testing record of each piece of adjustable equipment, listing name of person testing, date of test, and description of as-left set points.

G.        Field quality-control reports. Operation and Maintenance Data:  For headend and distribution system to include in emergency, operation, and maintenance manuals.

1.7             PROJECT CONDITIONS

A.         Environmental Limitations:  System components shall be equipped and rated for the environments in which they are installed.

B.         Environmental Conditions:  Capable of withstanding the following environmental conditions without mechanical or electrical damage or degradation of operating capability:

1.         Interior, Controlled Environment:  System components, except central-station control unit, installed in temperature-controlled interior environments shall be rated for continuous operation in ambient conditions of 36 to 122 deg F dry bulb and 20 to 90 percent relative humidity, noncondensing.

2.         Interior, Uncontrolled Environment:  System components installed in non temperature-controlled interior environments shall be rated for continuous operation in ambient conditions of 0 to 122 deg F dry bulb and 20 to 90 percent relative humidity, noncondensing.

1.8             COORDINATION

A.         Coordinate size and location of raceway system and provisions for electrical power to equipment specified in this Section.

B.         Coordinate Work of this Section with requirements of the Auraria Campus television system.

1.9             MAINTENANCE SERVICE

A.         Initial Maintenance Service:  Beginning at Substantial Completion, provide 12 months' full maintenance by skilled employees of MATV system Installer.  Include quarterly adjusting as required for optimum system performance.  Provide parts and supplies the same as those used in the manufacture and installation of original equipment.

B.         Continuing Maintenance Proposal:  From Installer to Owner, in the form of a standard yearly (or other period) maintenance agreement, starting on date initial maintenance service is concluded.  State services, obligations, conditions, and terms for agreement period and for future renewal options.

PART 2 - PRODUCTS

2.1             SYSTEMS REQUIREMENTS

A.         Components:  Plug-in, modular, heavy-duty, industrial- or commercial-grade units.

B.         Equipment:  Silicon-based, solid-state, integrated circuit devices.

C.        Power Supply Characteristics:  Devices shall be within specified parameters for ac supply voltages within the range of 105 to 130 V.

D.        Protect signal cables and connected components against transient-voltage surges by suppressors and absorbers designed specifically for that purpose. Comply with requirements in Division 26 Section "Transient-Voltage Suppression for Low-Voltage Electrical Power Circuits."

E.         Provide ac-powered equipment with integral surge suppressors complying with UL 1449.

F.         RF and Video Impedance Matching:  Signal-handling components, including connecting cable, shall have end-to-end impedance-matched signal paths. Match and balance devices used at connections where it is impossible to avoid impedance mismatch or mismatch of balanced circuits to unbalanced circuits.

2.2             DISTRIBUTION COMPONENTS

A.         Fiber Optic Couplers:     Optical coupler used to split 1310 and 1550 nm light sources with minimal loss.   Equipment will mount in standard 19 inch equipment rack or cabinet with SC/APC connectors.

1.         Manufacturers:  Subject to compliance with requirements, provide products by one of the following:

2.         Basis-of-Design Product:  Subject to compliance with requirements, provide product indicated on Drawings  or comparable product by one of the following:

a.         Blonder Tongue                                     FOC-108U-SA

b.         Approved Equal

B.         Fiber Receiver and Distribution Amplifiers:  Fiber optic receiver module integrated with a rack mounted broadband distribution amplifier with RF bandwidth of 860 MHz.  Optical input is SC/APC.

1.         Manufacturers:  Subject to compliance with requirements, provide products by one of the following:

2.         Basis-of-Design Product:  Subject to compliance with requirements, provide product indicated on Drawings  or comparable product by one of the following:

a.         Blonder Tongue                                     FRDA-S4S-860-43P

b.         Approved Equal

C.        Signal Power Splitters and Isolation Taps:  Metal-enclosed directional couplers with brass connector parts.  Where installed in signal circuits used to supply cable-powered amplifiers, power throughput capacity shall exceed load by at least 25 percent.

1.         Manufacturers:  Subject to compliance with requirements, provide products by one of the following:

2.         Basis-of-Design Product:  Subject to compliance with requirements, provide product indicated on Drawings  or comparable product by one of the following:

a.         Blonder Tongue

b.         Approved Equal

3.         Return Loss:  17 dB.

4.         RFI Shielding:  100 dB.

5.         Isolation:  25 dB.

6.         I/O Impedance:  75 ohms.

D.        Cable System Power Supplies:  Plug-in, modular construction, with surge, short-circuit, and overload protection.

E.         Signal Traps:  Packaged filters tuned to interference frequencies encountered in Project.

F.         Attenuators:  Passive, of fixed value, and used to balance signal levels.

G.        Terminating Resistors:  Enclosed units rated 0.5 W and matched for coaxial impedance.

H.        User-Interface Device:  Flush, female-type outlets, designed to install in telecommunications outlet faceplate.

1.         Manufacturers:  Subject to compliance with requirements, provide products by one of the following:

2.         Basis-of-Design Product:  Subject to compliance with requirements, provide Ortronics insert compatible with Series II faceplates:

a.         Ortronics

b.         No substitutions

3.         Cable Connector:  Female, Type F.

4.         Wall Plates:  Match materials and finish of power outlets in same space.

5.         Attenuation:  Less than 0.1 dB.

6.         Voltage Standing-Wave Ratio:  Less than 1.15 to 1.

PART 3 - EXECUTION

3.1             COORDINATION

A.         Coordinate with structured cabling contractor (SCC) for installation of fiber optic backbone and coaxial distribution cable.

B.         Determine acceptable location for all rack mounted equipment with SCC and owner prior to mounting.

C.        Proceed with installation only after unsatisfactory conditions have been corrected.

3.2             INSTALLATION

A.         Install rack mounted fiber optic splitter equipment in the Entrance Facility/Equipment Room (EF/ER) for interfacing with outside plant singlemode fiber and inside plant singlemode backbone fiber connecting to telecommunications rooms (TR).  Install fiber receiver / distribution amplifiers in TRs designated to serve classrooms, conference rooms or other rooms scheduled to receive signals from the campus TV system.

B.         Install taps and couplers as needed to distribute TV signals to TV outlets over SCC installed coaxial cable.  Determine all necessary tap and coupler values to provide proper signal levels to each outlet.  Install all necessary fittings and connectors to complete the installation.

3.3             IDENTIFICATION

A.         Identify system components, wiring, cabling, and terminals.  Include room numbers where applicable."

3.4             FIELD QUALITY CONTROL

A.         Manufacturer's Field Service:  Engage a factory-authorized service representative to inspect, test, and adjust components, assemblies, and equipment installations, including connections.

B.         Perform tests and inspections.

1.         Manufacturer's Field Service:  Engage a factory-authorized service representative to inspect components, assemblies, and equipment installations, including connections, and to assist in testing.

C.        Inspection:  Verify that units and controls are properly installed, connected, and labeled, and that interconnecting wires and terminals are identified.

D.        Tests and Inspections:

1.         Align and adjust system and pretest components, wiring, and functions to verify that they comply with specified requirements.

2.         Replace malfunctioning or damaged items.

3.         Retest until satisfactory performance and conditions are achieved.

4.         Prepare television equipment for acceptance and operational testing.

5.         Use an agile receiver and signal strength meter or spectrum analyzer for testing.

6.         Off-Air, Mast-Mounted Antenna Sources:  Connect receiver to the down-lead of a 10-element, single-channel antenna, tuned and oriented to optimize reception for the channel and placed at system antenna's location.  Alternatively, connect receiver to a single-channel video amplifier connected to the down-lead of the above single-channel antenna.

7.         CATV Sources:  Connect receiver to an agile demodulator or CATV set-top converter at CATV service entrance to the facility.

8.         Satellite Earth-Station System Sources:  Adapt receiver to the output of satellite-television receiver.

9.         CCTV Sources:  Connect receiver to the output of each CCTV signal source or the distribution amplifier associated with it.

10.      Test Schedule:  Schedule tests after pretesting has successfully been completed and system has been in normal functional operation for at least 14 days.  Provide a minimum of 10 days' notice of test schedule.

11.      Operational Tests:  Perform tests of operational system to verify that system complies with Specifications.  Include all modes of system operation. Test equipment for proper operation in all functional modes.

12.      Distribution System Acceptance Tests:

a.         Field-Strength Instrument:  Rated for minus 40-dBmV measuring sensitivity and a frequency range of 54 to 812 MHz, minimum.  Provide documentation of recent calibration against recognized standards.

b.         Signal Level and Picture Quality:  Use a field-strength meter or spectrum analyzer, and a standard television receiver to measure signal levels and check picture quality at all user-interface outlets.

1)         Test the signal strength in dBmV at 55151, 547,  and 750 MHz.

2)         Minimum acceptable signal level is 10 dBmV (1000 mV).

3)         Maximum acceptable signal level over the entire bandwidth is 15 dBmV.

4)         Television receiver shall show no evidence of cross-channel intermodulation, ghost images, or beat interference.

13.      Signal-to-Noise-Ratio Test:  Use a field-strength meter to make a sequence of measurements at the output of the last distribution amplifier or of another agreed-on location in system.  With system operating at normal levels, tune meter to the picture carrier frequency of each of the designated channels in turn and record the level.  With signal removed and input to corresponding headend amplifier terminated at 75 ohms, measure the level of noise at same tuning settings.  With meter correction factor added to last readings, differences from first set must not be less than 45 dB.

14.      Qualitative and Quantitative Performance Tests:  Demonstrate reception quality of color-television program transmissions at each user interface from each designated channel and source.  Quality shall be equal to or superior than that obtained with performance checks specified below, using a standard, commercial, cable-ready, color-television receiver.  Level and quality of signal at each outlet and from each service and source shall comply with the following Specifications when tested according to 47 CFR 76:

a.         RF video-carrier level.

b.         Relative video-carrier level.

c.         Carrier level stability, during 60-minute and 24-hour periods.

d.         Broadband frequency response.

e.         Channel frequency response.

f.          Carrier-to-noise ratio.

g.         RF visual signal-to-noise ratio.

h.         Antenna combiner insertion loss.

i.           Signal power splitter loss.

j.           Cable connector attenuation.

E.         Headend and distribution system will be considered defective if they do not pass tests and inspections.

F.         Prepare test and inspection reports.

G.        Cap all unused connectors and seal weathertight..