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City of Santa Ana Public Library Renovation <br />Smith, Fause & McDonald Inc.Group 4 Architecture Research + Planning, Inc. <br />Conform SetASI #026 – August 72, 20254 Group 4 Project No. 22575-01 <br />SECTION 27 4116-6 INTEGRATED AUDIOVISUAL SYSTEMS AND EQUIPMENT <br />3)The tester interface adapters must be of high quality and the cable <br />shall not show any twisting or kinking resulting from coiling and <br />storing of the tester interface adapters. In order to deliver optimum <br />accuracy, preference is given to a permanent link interface adapter <br />for the tester that can be calibrated to extend the reference plane of <br />the Return Loss measurement to the permanent link interface. The <br />Contractor shall provide proof that the interface has been calibrated <br />within the period recommended by the vendor. To ensure that <br />normal handling on the job does not cause measurable Return Loss <br />change, the adapter cord cable shall not be of twisted-pair <br />construction. <br />b.Tone Test Sets. <br />8.Any other items of equipment or materials required to demonstrate conformance with <br />the Contract Documents. <br />1.6 SUBMITTALS <br />A.Conform with Section 27 05 00 - Common Work Results for Communications Systems <br />1.7 CONFLICTS <br />A.Present any conflicts between codes, regulations, specifications and/or requirements at least <br />thirty (30) calendar days prior to the commencement of the scheduled work. <br />1.8 SYSTEM PERFORMANCE REQUIREMENTS, AUDIO-VISUAL SYSTEM <br />A.Using the listed test equipment, document that the installed systems meet or exceed the <br />performance standards below. <br />1.Audio Playback and Sound Reinforcement Systems: <br />a.Electrical Performance; Source Input to Power Amplifier Output: <br />1)Frequency Response (Equalizer flat): +0.5 dB 30 Hz to 15 kHz. <br />2)Total Harmonic Distortion (THD): Less than 0.5%, 30 Hz to 15 kHz, <br />+4 dBm line level. <br />3)Signal to Noise: At least 70 dB, 30 Hz to 15 kHz, referenced to input <br />of +4 dBm. <br />4)Crosstalk: At least -60 dB, 30 Hz to 15 kHz. <br />b.Electro/Acoustic Performance: <br />1)Standard Classrooms, Coaching Spaces and Conference Rooms <br />a)Uniformity of Coverage: <br />(1) Consistent with installed device, location in room <br />and geometric dispersion of sound level. <br />b)Minimum Sound Pressure Level, Pink Noise Input measured <br />on axis to device under test, center of room, at 4 feet above <br />the floor using a freestanding Type 1, microphone: <br />(1)Program Audio 80 dB flat weighting, in each octave <br />from 125 Hz to 8 kHz, without clipping. <br />c.Equipment: Specified individually. <br />d.Audio Signal Path: Shall not degrade performance of connected equipment. <br />2.Video Systems <br />a.Digital performance concurrent with SMPTE 292M HDTV requirements at 1.5 <br />Gigabits. <br />b.Analog Composite Video Frequency Response: 100 KHz to 20 MHz within <br />0.5 dB <br />c.Analog Component/RGBHV Video Frequency Response: 100 KHz to 350 <br />MHz within 3.0 dB