ClearOne comm AP400 Introduction ~ G-Link Networking Bus, Link EC Reference bus, Control bus, Nom

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Introduction ~ G-Link Networking

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X-bus

This mix-minus bus is defined as the master microphone mix, and it supports NOM (see page 26). All gated microphones are default routed to this bus.

Y-bus

This mix-minus bus is defined as the line input master mix. All line-level audio inputs such as video codecs, AP800s, AP10 Telephone Interfaces, VCRs, etc., are default routed to this bus. Y-bus does not support NOM.

Z-bus

This mix-minus bus is a user-defined auxiliary mix bus. Z-bus does not support

NOM.

G-Link EC Reference bus

This bus provides a system-wide echo canceller reference signal. It allows the reference signal to be passed to additional G-Linked mic channels and their associated echo cancellers. Typically, one output on one unit will be passed along the G-Link EC Reference bus.

Control bus

The control bus is an independent channel from the G-Link’s audio channel; it uses a different pair of wires on the same cable. This allows control information to pass even if the units are not using the audio link. The AP400 supports the full set of commands through the control bus.

Technical Services Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760

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Contents AP400 Audio Conferencing System AP400 Installation ClearOne Part No July 2002 Rev Iii Table of ContentsAppendices AP-Ware SoftwareOperation Product Overview IntroductionFeatures ClearOne Communications EuMEA GmbH Professional Services GroupSales and Customer Service Technical SupportFront panel UnpackingControls and Connections Introduction ~ Controls and Connections Rear panelLink bus Link NetworkNOM Introduction ~ G-Link Networking BusLink EC Reference bus Control busTechnical Services Group ~ 1-800-283-5936 USA ~ Equipment Requirements AP400 installation diagram Hardware SetupTo connect the AP400 Connecting the unitInstallation ~ Hardware Setup To create a G-Link network Installation ~ Networking UnitsNetworking Units Link connectionsDevice types Mixer modeDevice IDs To set the device IDEC reference To set mixer modeErrors Menu trees Installation ~ LCD ProgrammingSwitching from one main menu category to another LCD ProgrammingLCD menu tree Adjusting a valueSet passcode Select presetSystem parameters Lock panelGate parameters Mixer modeDevice ID Unit IDGate Ratio Last Mic ModeFirst mic priority Hold Time Off AttenuationCombination Channels Decay RateManual Ambient To determine ambient levelInstallation ~ LCD Programming RS-232 Inputs Installation ~ LCD Programming TelcoInput parameters Chairman Mic Phantom PowerHigh-Pass Filter EQ StatusSubbus Echo cancellerNLP adjust Inputs A-D, TelcoOutput 1-4, Output A-D, Telco Output parametersRouting parameters EC reference and PA Installation ~ LCD Programming SubbusLink X-Z buses Slave unit Link referenceInputs, Outputs, ERL/TERL, and ERLE/TERLE Default MeterMeter parameters Installation ~ Worksheet 64MB RAM DescriptionAP-Ware software requirements To install AP-Ware Installing AP-WareMuting Controlling the volumeTo adjust the volume Front PanelInstructions Telco InterfaceTo make and disconnect a call To mute or unmute an outputOperation ~ Controllers Other telco optionsControllers Custom control through DB-25 portTouch panel control Appendices Appendix a SpecificationsThis warranty is void if Appendix B Warranty and ComplianceWarranty FCC Part 68 Compliance Appendices ~ Appendix B Warranty and ComplianceFCC Part 15 Compliance Industry Canada Compliance Safety Information Control/Status port pinout Appendix C Connector PinoutsAppendices ~ Appendix C Connector Pinouts RS-232 COM DCE port pinoutAccessory ClearOne Part Number Appendix D AccessoriesAppendix E Serial Commands Appendices ~ Appendix D AccessoriesDevice Command SyntaxError Codes MrefFigure E.1. AP400 Serial Commands Appendices ~ Appendix E Serial CommandsReturn Values Serial Command Parameters ExplanationsAamb ExplanationCH= A-D AGCDevice AD Device AGC CHChairo AmblvlBaud BYEDfltm DecayDial ERL ErleFPP FlowFMP Example GainExamples Microphone gating keyHook GmodeGratio HoldLVL HookdLFP LMOMEQ MasterMdmode Mline MHPMinit Input Input word assignment MmaxMpass MtrxReturn Values OutputmixOUTPUTMIXNote =NULL Mute NLPDevice Mute CH W Device NLP CH PAA NOMOffa NullExample Preset Refsel PresetReturn Value RingRxrd TamodeTout TerlTerle UIDFigure F.1. Routing matrix worksheet Appendix F WorksheetsFigure F.2. Programming worksheet Appendices ~ Appendix F WorksheetsFigure F.3. Audio flow block diagram DSP IndexIndex ~ P-Z