DPI System Design Checklist

• Document No.

• Project Title

• Client / Site

• Conducted on

  Date

• Prepared by

• Location
  Address

Video

Displays

• Image luminance has been considered.

  Yes

  No

  N/A

• The proper lens has been calculated.

  Yes

  No

  N/A

• Consideration has been given for “scaling” to the native resolution of the projector.

  Yes

  No

  N/A

Plasma

• Plasma screen burn-in issues were addressed.

  Yes

  No

  N/A

Projection

• Image size is the proper height for the application and viewing area.

  Yes

  No

  N/A

• Audience viewing sight lines have been considered.

  Yes

  No

  N/A

Video Switching and Distribution

• System bandwidth is adequate for the design criteria.

  Yes

  No

  N/A

• Consideration is given to video formats (composite, s-video, component, RGsB, RGBS, RGBHV) and sync frequencies to be compatible.

  Yes

  No

  N/A

• Video test points and/or test equipment was considered.

  Yes

  No

  N/A

Video Conference

• Video conferencing lighting requirements were considered.

  Yes

  No

  N/A

• Camera lens requirements were considered.

  Yes

  No

  N/A

Audio

• The sound system(s) will be "loud enough".

  Yes

  No

  N/A

• The sound system(s) will be "loud enough" for all listeners.

  Yes

  No

  N/A

• The system will be stable.

  Yes

  No

  N/A

• Microphones are properly placed.

  Yes

  No

  N/A

• Microphone patterns are carefully chosen.

  Yes

  No

  N/A

• The system is intelligible.

  Yes

  No

  N/A

• The loudspeakers and the power amplifiers driving them are impedance compatible.

  Yes

  No

  N/A

• There is a method of leveling source inputs so that the program sources do not change in level when selected.

  Yes

  No

  N/A

• Digital hybrids and CODECs are getting the levels they need for proper operation.

  Yes

  No

  N/A

• Compressors, volume controls, and feedback "exterminators" are removed from the echo canceller chain.

  Yes

  No

  N/A

• Audio test points and/or test equipment was considered.

  Yes

  No

  N/A

DSP / Matrix Mixers

• Are all inputs and outputs accurately labeled and accounted for?

  Yes

  No

  N/A

• Does signal flow makes sense? Is each source in fact intended to go to each destination?

  Yes

  No

  N/A

• Is each "block" (EQ, delay, etc.) in the chain desired/necessary?

  Yes

  No

  N/A

• Is each "block" doing something (i.e.- not bypassed)?

  Yes

  No

  N/A

• Are all inputs arriving at the same level (typically 0 dBu)?

  Yes

  No

  N/A

• Are all outputs leaving at the same level (or the level specified by their destination; i.e. some codecs want minus 10 dBu)?

  Yes

  No

  N/A

• If using multiple units, are all busses labeled and properly designated?

  Yes

  No

  N/A

• If you are setting threshold, are you taking into account room noise level (if threshold is set too high, the mics won't turn on; if too low, room noise will gate the mics)?

  Yes

  No

  N/A

• Are ALL local microphones (microphones being sent out in a conference) in EC room using the EC reference?

  Yes

  No

  N/A

• Is everything BUT local microphones (including microphones that are NOT sent to the far end) included in EC reference?

  Yes

  No

  N/A

• Does every crosspoint (output and input is going to) make sense?

  Yes

  No

  N/A

• Is every input not directed to itself (i.e. Audio Conference Output is not directed to Audio Conference Input)?

  Yes

  No

  N/A

• Are crosspoint levels measured and accounted for (i.e. input #1 is set 27dB higher than input #2 for no apparent reason)?

  Yes

  No

  N/A

• Do the presets fulfill all their requirements?

  Yes

  No

  N/A

• Does the NOM bus have mics only, are program sources not on the NOM bus(s)?

  Yes

  No

  N/A

• When setting delay times for local reinforcement, did you account for the Haas effect (add another 20 msec or so) for better localization?

  Yes

  No

  N/A

• DID YOU REMEMBER TO SAVE TO A FILE RECORD AS WELL AS TO THE DSP DEVICE?

  Yes

  No

  N/A

Control

• Is it centralized?

  Yes

  No

  N/A

• Are too many button presses required for an operation?

  Yes

  No

  N/A

• Is the hardware protocol compatible?

  Yes

  No

  N/A

• Are sync or power sensors required for feedback?

  Yes

  No

  N/A

• Are there enough ports on the control system, with expansion?

  Yes

  No

  N/A

• Does the block diagram have port assignments? Pinouts?

  Yes

  No

  N/A

• Communications protocols Available?

  Yes

  No

  N/A

• Sufficient power supplies?

  Yes

  No

  N/A

• Have power distribution, cable length, and RS 485 anomalies been considered?

  Yes

  No

  N/A

• Are RS 232 runs less than 50 feet, or has a converter to compensate been included?

  Yes

  No

  N/A

General

• Has every effort been made to assure no dangerous obstructions or jagged edges exist that may injure a user, operator, or presenter?

  Yes

  No

  N/A

• Is every feature, source, destination accounted for as proposed?

  Yes

  No

  N/A

• Have immediate actions during a failure been considered, along with their possible solutions (e.g. redundant power supplies, system switchers, control systems, patch bays, etc.)?

  Yes

  No

  N/A

• Do equipment cabinets require work surfaces, work lights, storage drawers, sequential power distribution, drawer shelves, etc.?

  Yes

  No

  N/A

• Have critical areas for coordination such as millwork, supporting structures, metal work, etc. been identified, and well communicated

  Yes

  No

  N/A

Power

• Has every effort been made to assure single phase feed for the A V system, and that it is properly grounded?

  Yes

  No

  N/A

Patch Panels

• Do patch panels include "mults"?

  Yes

  No

  N/A

• Are patch panel assignments logically laid out, and do normal throughs have "source" on top and "destination" directly below it?

  Yes

  No

  N/A

• Do patch cords have a "home"?

  Yes

  No

  N/A

Accessibility

• Are rack elevation ADA compliant?

  Yes

  No

  N/A

• Are rack elevations laid out to afford easy, safe, and ergonometric operation?

  Yes

  No

  N/A

Thermal

• Has the heat loading been calculated and communicated with the client's architect/engineer?

  Yes

  No

  N/A

• Have thermal gradients been accounted for in the equipment racks, projectors, lecterns, auxiliary cabinets, etc.?

  Yes

  No

  N/A