ICT > Telus audio visual system commissioning checklist

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Thermal gradient inspected: all equipment operating within manufacturers guidelines.
Cable inspection; labeling, cable dress, signal separation, cable stress, serviceability, tie wraps to tight (none on category cable, only Velcro ties). Cable labeling is positioned and oriented in a consistent manner, are legible and unambiguous.Capture images of cable dressing here.
Demonstrate the full inventory to be all new equipment, in full compliance with the specification, or as modified by approved submission. Record test results as pass/fail, and list exceptions.
Cable and other labels and engravings aren't accurate paper model of the furnished systems, and in compliance with the latest revised specifications. Record test results as pass/fail.
This includes accessibility to equipment to be easily pulled for repair by one person, neatly dressed cables, bundled in forms (refer to Giddings, Davis and Davis), having no excessive pressure on cables at termination points and connector utilize service loops, and have each cable number in agreement with the as built drawings. This includes the equipment rack itself. All switches and receptacle shall be logically and permanently labeled.
All equipment in the rack is labeled, and the labels match those on the drawings (equipment symbols and/or description) control systems, field plates, patch panels, and any labels associate with the system. This will allow for easy serviceability, as well as prevent confusion systems with multiples of similar equipment.
Coax cables respect a bend radius of at least 5X the cable's radii, or as recommended by the manufacturer.
Confirm all nomenclature for consistency: drawings, touchscreen, wall plates, floor boxes, patch panels, equipment, etc.
Balanced signals are balanced. Stereo signals or stereo. All are wired in the same Polarity. All can pass audio at appropriate levels. (All lines marked on drawings.)
Produce a nominal operating level of (65) dB SPL (sound pressure level) for conference speech, (60) dB SPL for program material, "A" weighted at all listeners ears +/-(2) dB uniformity of coverage (or at least (15) dB above the ambient noise, A weighted, whichever is greater), with the control system volume control indicating "normal" or default setting. Record results for each channel and source.
Be capable of producing an additional (15) dB above this level (80 dB SPL) for each audio source, with less than 0.5% THD (total harmonic distortion) plus noise.
Program loudspeakers shall be connected in the same polarity, and speech reinforcement system shall be polarized such that a positive acoustic pressure on a microphone results in a positive acoustic pressure at the loudspeaker ("polarity test").
Produce no more than a 1 dB variance in program source levels, when each programs sources playing a calibrated media (CD, videotape, set up test tone, etc.).
There should be no audible vibration caused by improper mechanical installation. Use continuous sweep signal at headroom level (from generator or test CD) pass/fail result for which device that what frequencies. ("Buzzes and rattles test").
The speech reinforcement system shall be stable (no feedback).
For audio conference systems adjust microphone input gain So as to demonstrate that "standard talker" (60 dB SPL at 1 m), positioned at each talker position in the room, produces a "0 dB" level at the input of the mixer bus of the audio conference DSP device.If there is local reinforcement ("mix minus"), AGC and ALC may need to be restricted. Record test results as pass fail.
For conferencing mode, at the (65) dB SPL listening level, be able to demonstrate full-duplex operation, with no reports of echo or "speech trails" (as detected from the far end).
For intelligibility, strive for an RTSI (Rapid Speech Transmission Index) greater than 0.85. (if requested only) RSTI, using TEF, Smaart (copyright) Tools, or STI-PA. For systems where early reflections may cause intelligibility problems, or when multiple drivers are used, an ETC ((Energy Time Curve) may be requested.
For wireless microphone systems, with all wireless microphones turned on, confirm that throughout the specified operating area for the transmitter, there are no dropouts, intermodulation interaction between wireless systems, or RF caused artifacts.
Confirm RF immunity at areas where users are expected to operate cell phones and messaging PDAs.
Confirm that the selected wireless microphone frequencies are not shared by any digital TV signals. An RF spectrum analyzer should be used, as well as a channel lineup from TVfool.com. In addition, there should be no RF activity shown on the receiver when it's dedicated transmitter is powered off.
Record level across analog telephone line. Inspect DSP mixer telephone line levels, both transmit and receive, when normal speech is encountered in the room.
Also for NTSC sources, confirm Optimum brightness, contrast, and color in displays. Use SMPTE source with PLUGE (picture line up generation equipment) display.
When several displays are visible in the same space, demonstrate consistencies in colors across all of them. For composite video signals using a NTSC bars with PLUGE signal to all. For RGB and digital video signals use a colorimeter and test color signal software to confirm consistent images.
Displays are focused, centered, and evenly illuminated. If requested, confirm using the calibrated light meter that the brightest measurement locations shall be no more than +10% above average, and the dimmest locations no less than -5% below average measured.
Display stable images, with no scaling related visual artifacts, when switching between, at a minimum, 1024x768, 1280x1024, 1920 x 1080 and 1280 x 720 sources, and/or all those specified in the performance criteria for the system.
The display is able to switch between different color spaces and resolutions. Show a Blu-ray or TV (YUV) signal, then show a laptop (RGB) signal, and then switch back to the Blu-ray/TV (YUV) signal. The source should always display properly.
With the displays powered on, power off each source in the system. The display should remain on (no power off command sent from a source).
Disregard any routes that are not permitted by design as described in the narrative, such as HDCP sources routed to a codec.
All HDCP sources can be routed to all expected destinations at the same time. There are some devices with limited capability to display on multiple displays. The system requires that each source can display on the required number of displays in the system.
When HDMI signals are included in the system, confirm that an acceptable signal is being displayed on the monitor from each source position (use the alt pixel test image (pixel on, pixel off); 1920 x 1200 @ 60, 1920 x 1080 @ 60, 1280 x 720 @ 60, 1366 x 768 @ 60, 1024x768 @ 60, 800x600 @ 60, 1600 x 1200 at 60.Inspect each, leaving the signal on for three minutes. There should be no "sparklies" or other artifacts. Note: if the signal is going to a codec, HDCP should be turned off (codecs do not support HDCP). If the signal is going to a display, HDCP should be turned on for complete HDMI test to verify cables and display input.
Perform "Source test" with HDMI tester on each source. Test will verify source integrity and EDID information. QD 780 Analyzer required.
Perform "sink test" with HDMI tester on each display. Test will verify display can handle various resolutions, and spot check EDID to make sure they work with all sources. QB 780 analyzer required.
Using a static video source, perform pixel by pixel comparison through entire signal chain from each source location. Test will compare 10 frames. Set generator to the highest resolution supported by the system, route to each display, and compare Frames at each display. Repeat for every source location. QD 780 analyzer and separate HDMI generator required.
When testing Blu-ray, confirm that the movie plays. Sometimes HDCP is not enabled during the menus and previews, but only during the movie. Blu-ray disc required.
Confirm typical client laptops have been successfully used with the system, inclusive of default resolution (works with switcher EDID), any adapters, etc. Client laptop required.
For laptops with digital outputs: if the audio is not embedded in an HDMI connection, or if the user connects to his audio out, is the analog audio satisfactory distributed? Client laptop required.
All high-bandwidth cables have been qualified by test equipment with Bandwidth verification capabilities. Digital video cables (HDMI, DVI, etc.) must be qualified with an HDMI tester to the highest video resolution. Cat-x cables must be qualified to the appropriate bandwidth (> 1 GHz).
All video signal shown on drawings are tested for integrity. All video lines can pass their intended video formats. All video lines can be displayed at their intended destinations. (All lines marked on drawings.)
Confirm acceptable TV levels, and any channel presets are accurate.
Displays have on-screen displays/menus disabled, or as specified by the user.
Video projector, if any, must have "blue screen" or "no image screen" disabled, or as directed by the user.
No lost pixels when Full White Test signal is displayed (7 pixels maximum per quadrant, or follow manufacturer spec).
Confirm all Codec options specified by the customer has been installed.
IP information provided by client and loaded in the system, including IP address, subnet mask, Gateway, timeserver, gatekeeper, etc. All network functions specified by the customer are shown to function properly on customers LAN.
Log all test conference calls (audio and video). Log should include time, line used, number called, successive connection, who we spoke with, success of full-duplex, success of auto disconnect, level in the room, note static or jitter/packet loss, etc. Note if auto disconnect functions as specified.
Check for excessive vibration on videoconferencing cameras at full telephoto position.
The control system performs all the functions as indicated on the function list ("control system specification") provided, with stability, and in sync with the equipment being controlled without the need to reset any item of equipment.
When system is powered down, system up sequence presents the system in a desirable state with no objectionable anomalies.
Any web-based system control or monitoring features, and other IP functionality of system (timeservers, system generated email, etc). thoroughly tested.
Would the user object to anything about the system? Is everything Plum and Square, clean and blemish free? Are displays and equipment free of fingerprints and dust?
Does the system under test satisfy all the system requirements as laid out by the client approved narrative/signed proposal?
Prepare document report, certifying the product, performance, and practices are in compliance, and noting any exceptions. Distribute accordingly.
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