ClearOne XAP 80 Installation & Operation Manual
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ClearOne XAP 80 Installation & Operation Manual

Audio conferencing system
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XAP™ 800 Audio Conferencing System
Installation & Operation Manual

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  • Page 1 Audio Products XAP™ 800 Audio Conferencing System Installation & Operation Manual...
  • Page 2 XAP™ 800 Audio Conferencing System Installation & Operation Manual...

  • Page 3: Product Overview

    © 2002 ClearOne Communications, Inc. All rights reserved. No part of this document may be reproduced in any form or by any means without written permission from ClearOne Communications. Printed in the United States of America. ClearOne Communications reserves specific privileges.

  • Page 4: Table Of Contents

    XAP 800 Installation and Operation Manual Table of Contents CHAPTER 1: Introduction ......1 Product overview ......... . .1 New Features .

  • Page 5: Product Registration

    CHAPTER 3: System Configuration ....21 G-Ware Requirements ..........21 Creating Floppy Disk Copies .

  • Page 6: Unpacking

    XAP IR Remote ..........78 ClearOne Control Panels .

  • Page 7: Chapter 1: Introduction

    Appendix A: Specifications. C. RS-485 Remote Panel A/B Port. These four-pin Phoenix connector ports allow you to control the XAP 800 with the ClearOne Control Panel or XAP IR Remote Control. Technical Services Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760...
  • Page 8 External power can be provided to control devices when more current is required. See page 92 for maximum cable run distances when using ClearOne Control Panels. D. Control/Status Ports A and B. These two female DB25 connector are used to connect control devices to the XAP 800.

  • Page 9: Networking

    PSR1212 units is 80 feet (24 meters). Connecting a XAP TH2 must not increase the cable length between two PSR1212s, XAP 800s and/or XAP 400s beyond 80 feet. ClearOne recommends that category five twisted-pair (10BaseT LAN) cable be used. The expansion bus (E-bus) allows audio routing between destinations on the E-bus network.

  • Page 10: Operational Requirements

    The XAP 800 can be safely operated in a room with varying temperatures between 32 °F/0 °C and 110 °F/43 °C. G-Ware requirements ClearOne’s G-Ware software requires the following minimum system configuration: • Minimum RAM requirement is determined by the operating system...

  • Page 11: Chapter 2: Installation

    CHAPTER 2: Installation The XAP 800 is designed for easy installation and setup. All connections are made through rear-panel connectors. This chapter provides instructions on making hardware connections, creating an expansion bus (E-bus) network, assigning device ID numbers, selecting the mixer mode, and using the front panel LCD menu. Hardware Setup The diagram below illustrates the typical connections that are made for a single-unit XAP 800 system.

  • Page 12: To Connect The Unit

    • Outputs 1–12 [E] Line level outputs If you are using a ClearOne Remote Panel, wire it to the RS-485 port [C] using the provided four-terminal Phoenix push-on connectors. Plug in the XAP 800 to complete the installation. The power output [A] will operate at any level between 100–240VAC and 50–60Hz.

  • Page 13: Networking Units

    Figure 2.4. E-bus connection diagram To create an expansion bus network Plug the expansion bus terminator in the Expansion Bus In connector of ClearOne recommends that the first unit in the network. the first unit in your E-bus Connect the RJ-45 jumper cable (or Cat 5 twisted pair cable) to the...

  • Page 14: Device Ids

    Installation ~ Networking Units If the same device ID is Device IDs assigned to more than one Once your expansion bus connections are made (and if you have more than one unit on the E-bus network, XAP 800 at a site), you need to set up a unique expansion bus device ID number—a the Meter LED “+12”...

  • Page 15: Lcd Programming

    Installation ~ LCD Programming LCD Programming The XAP 800’s front panel is intuitive to operate, thanks to its simple interface: a G-Ware software 2x16 character LCD, menu buttons, and a peak-level LED bar meter. Although most required complete of the XAP 800’s features are programmed with G-Ware software (see page 23), the system setup.

  • Page 16: System Menu

    Installation ~ LCD Programming The five main menus are: System, RS-232, Meter, Inputs, and Outputs. All submenu items are arranged under these menus. Use the Enter button to select items and the buttons to scroll through menus and submenus. When the last menu item is reached, the display scrolls back to the beginning of the list.

  • Page 17: Rs-232 Menu

    Installation ~ LCD Programming To unlock the front panel, attempt to adjust a parameter. The XAP 800 will Menu items can still be scrolled through when the prompt for the passcode. Upon entering the fifth character (if entered correctly), the front panel will unlock. The default passcode for all boxes is Enter.

  • Page 18: Meter Menu

    Software flow control (Xon/Xoff) is supported by the XAP/PSR units and is only used with a pass-through device, such as a modem. To avoid communication errors, ClearOne strongly recommends that you connect all DB9 pins and enable flow control when connecting to a PC.

  • Page 19: Inputs Menu

    Installation ~ LCD Programming Inputs Select which input (1–12) you want to monitor on the LCD and LED display. Scroll to the input, then press Enter. The meter displayed is the post-gain meter. Outputs This submenu allows you to choose which output (1–12) you want to monitor on the LCD and LED display.

  • Page 20: Outputs Menu

    Installation ~ LCD Programming Gain This submenu allows you to adjust the gain for the selected input. Use the buttons to increase or decrease gain. Outputs menu There are two submenus under the Outputs menu: Mute and Gain. To access these submenus you must first select the output.
  • Page 21 Installation ~ LCD Programming Technical Services Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760...
  • Page 22 Technical Services Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760...

  • Page 23: Chapter 3: System Configuration

    CHAPTER 3: System Configuration ClearOne’s G-Ware software provides an easy interface for configuring and controlling your XAP 800. While some configuration can be done using the front panel LCD menus, G-Ware is required to complete the custom configuration of your audio conferencing system.

  • Page 24: Creating Floppy Disk Copies

    Insert the Audio and Video Products CD into the CD-ROM drive. If the Autorun feature is enabled on the PC, the ClearOne Welcome window opens. Click the Software tab and select G-Ware. If the Autorun window does not open, open the Windows Start menu and choose Run.

  • Page 25: Site Setup

    Click the Comm tab. Select the COM port, baud rate, and flow control you control using the XAP want to use. ClearOne recommends that you leave Flow Control set to front panel controls. See Hardware. The Software setting is not supported by XAP/PSR units and is page 16.

  • Page 26: Adding A Xap 800

    System Configuration ~ Site Setup Adding a XAP 800 You can add a XAP 800(s) to your site file by connecting to your site and using G-Ware to automatically create icons for the detected units. Or, you can work offline and manually add the unit(s) to the site file and connect to the site at a later time.

  • Page 27: Configuring Unit Properties

    System Configuration ~ Site Setup Configuring Unit Properties Using the Unit Properties window, you can configure the unit‘s communication and security properties in addition to general unit properties such as name, type, and country code. The Unit Properties window automatically opens when you manually add a unit to the site.
  • Page 28 System Configuration ~ Site Setup If a modem is connected to the XAP 800 unit, select Use Modem and enter the initialization string. Click OK; the XAP 800 will initialize the modem. Click the Security tab. Create a modem password. The password will be required before control of the system is allowed.

  • Page 29: G-Ware Screens

    System Configuration ~ G-Ware Screens G-Ware Screens G-Ware has three modes: Configuration, Preset, and Macro Recorder. Configuration is used to configure the unit and is the default mode. The Preset and Macro modes Figure 3.15. are discussed in Chapter 4: Advanced Configuration. You can switch between modes Configuration, Preset, by clicking on the corresponding toolbar button.
  • Page 30 System Configuration ~ G-Ware Screens Copying and pasting settings G-Ware has shortcut menus which appear when you right-click a selection or program window in G-Ware. These shortcut menus provide quick access to options such as Print, Copy, and Paste that pertain only to that selection or screen region. Figure 3.17.

  • Page 31: Matrix Screen

    System Configuration ~ G-Ware Screens Matrix Screen The Matrix Screen is used to route audio to one or more destinations (outputs, expansion bus, or processing). Any number of connections to outputs can be made in the matrix. The Matrix Screen can also be used to access the Input, Output, and Processing configuration windows by clicking on the buttons along the top and left sides of the routing matrix.

  • Page 32: Audio Routing

    System Configuration ~ Audio Routing Audio Routing Audio is routed in the Matrix Screen (see Figure 3.20 on previous page). To access the Matrix Screen, click on the Matrix button on the Flow Screen. To return to the Flow Screen, click the Flow Screen button. The XAP 800 routing matrix has 32 possible input sources and 32 output destinations, with level control at each cross point.

  • Page 33: Matrix Report

    System Configuration ~ Audio Routing numerical value directly in the window). The attenuation range is from 0 to -60dB. Click Close to exit. Note that the level control you have selected for the cross point is indicated numerically in the cross point cell. The Cross Point shortcut menu also allows you to copy and paste the current Cross Point configuration, including attenuation, to other cross points.

  • Page 34: Inputs And Outputs

    Gentner D.E.C. To use the mute button on a microphone, contact ClearOne Technical Services. Figure 3.25. Inputs 1–8 configuration window To select an input channel, click a blank area in the input pane. If you click on the input label, a secondary window will open allowing you to rename the input.
  • Page 35 System Configuration ~ Inputs and Outputs The Speech Leveler is a compander that is optimized for speech audio. It quickly equalizes the difference in speech levels in the room without bringing up noise. If you use AGC with the Speech Leveler, set the AGC Response Time to >2 seconds. AGC adjusts softer and louder input audio to a consistent level that you select (the target level).
  • Page 36 System Configuration ~ Inputs and Outputs If you select a virtual echo cancellation reference, the Virtual Reference window will open. You can also open this window from the G-Ware toolbar. Figure 3.29. Virtual Reference toolbar button Figure 3.30. Virtual Reference window. Use this window to select which signals will be used by the four Virtual Reference points.
  • Page 37 System Configuration ~ Inputs and Outputs Non-linear Processing (NLP) The Non-linear Processing (NLP) feature increases the power of echo cancellation for difficult acoustical environments. NLP features four settings: Soft (6dB), Medium (12dB), Aggressive (18dB), and Off. Use NLP with care; corresponding trade-offs can include suppression and half-duplex operation.
  • Page 38 System Configuration ~ Inputs and Outputs Figure 3.32. Inputs 1–8 Filters window Type Use the Type list to select from the following input filters: All Pass, High Pass, Low Pass, Notch, and PEQ. G-Ware features other filters which are configured in the Processing section of the software (see page 49).
  • Page 39 System Configuration ~ Inputs and Outputs Bandwidth. Bandwidth establishes the difference between the upper and lower points of a filter’s audio passband. Bypass. The Bypass box, when selected, bypasses the selected filter. Phase. Phase generates—on the graph—the phase relationship of the graphed frequency response.
  • Page 40 System Configuration ~ Inputs and Outputs Gate The XAP 800 has unique gating parameters which control microphone activation. The Gate button on the selected input in Inputs 1–8 window opens the Gate configuration window where you can establish the gating parameters for the input. Activation There are three mic activation settings: Auto Gate, Manual On, and Manual Off.
  • Page 41 System Configuration ~ Inputs and Outputs Figure 3.35. XAP 800 automixing gate functions Gate Ratio Gate Ratio specifies how much louder the audio level must be above the ambient level before the channel gates on. The gate ratio range is from 0 to 50dB. Default is 15dB.
  • Page 42 System Configuration ~ Inputs and Outputs PA Adapt and AEC Reference The PA Adapt Reference and AEC Reference are the When using either the PA Adaptive mode (see page 38) or Acoustic Echo same for each channel. If Cancellation (see page 33), the output that carries this information, i.e. the you change the PA Adapt Reference reference output, must be defined.
  • Page 43 System Configuration ~ Inputs and Outputs Gating Group Select In addition to specifying gating characteristics for each mic input, you can assign the inputs to a gating group for greater flexibility and control. When inputs are Figure 3.39. Gating Group Select pane assigned to a gating group, the gating information from the inputs is used to control how the entire mixer behaves.
  • Page 44 ~ Inputs and Outputs Leave 1st Mic Priority selected (default) to enable this feature; otherwise, clear the selection to disable it. ClearOne recommends leaving this setting on. This setting helps maintain maximum audio intelligibility by allowing only one mic to gate on to a participant’s voice. 1st Mic Priority allows more than one microphone to be activated at the same time—it simply restricts...
  • Page 45 System Configuration ~ Inputs and Outputs Optimizing input gain structure How you adjust an input’s gain directly affects sound quality. The optimal input gain setting is one which is adjusted as high as possible above the noise floor without introducing clipping. Clipping can cause distortion which can damage amplifiers and loudspeakers.

  • Page 46: Inputs 9-12

    System Configuration ~ Inputs and Outputs Inputs 9–12 The XAP 800 supports 4 line level only inputs for auxiliary audio sources such as video codecs and CD players. To open the Inputs 9–12 configuration window, click the Inputs 9–12 button on the Flow Screen. The In 9–12 button on the Matrix Screen will also open this window.
  • Page 47 Appendices ~ Appendix E: Serial Commands Groups and channels If a channel has an alpha value of “*”, the command is to be applied to all channels. For example, a group value of M and a channel value of * would mean that the command is to be applied to all channels of group M (mic inputs).

  • Page 48: Outputs 1-12

    Appendices ~ Appendix E: Serial Commands Meter type definitions Serial command error codes Error number Text message Explanation/Solution Memory error The box is out of internal memory. Power cycle the box. No command found A command was not found in the string. Unknown command A command was executed on a different device type that this box response...
  • Page 49 Appendices ~ Appendix E: Serial Commands XAP 800 Serial commands Command Function Command Function AAMB Selects/reports adapt ambient setting LOCK Selects/reports the state of the preset and Selects/reports acoustic echo canceller setting macro lock. When on, the lock prevents presets Enable/disables AGC and macros that have been flagged from being AGCSET...

  • Page 50: Expansion Buses

    Appendices ~ Appendix E: Serial Commands Command Function Command Function NCSEL Selects/reports noise cancellation on/off for REFSET Selects/reports the output the reference channel each mic channel tracks Selects/reports NLP for each mic channel SERECHO Selects/reports the serial echo of the RS-232 Selects/reports NOM setting on output SERMODE Selects/reports the serial mode of the RS-232...

  • Page 51: Processing

    Appendices ~ Appendix E: Serial Commands AAMB - Adaptive Ambient Mode This command selects/reports the setting of adaptive ambient. Command form: DEVICE AAMB <Channel> <Group> [Value] : Argument details Name Description Device 0–7 or * to select all units AAMB Command form Channel Range 1–8 (Selects input)
  • Page 52 Appendices ~ Appendix E: Serial Commands AGCSET - Automatic Gain Control Adjust This command selects/reports the settings of the AGC on the input channels. Command form DEVICE AGCSET <Channel> <Group> [Threshold] [Target] [Attack] [Gain] Argument details Name Description Units Device 0–7 or * to select all units AGCSET Command form...
  • Page 53 Appendices ~ Appendix E: Serial Commands BAUD - Baud Rate This command selects/reports the baud rate of the serial port. Command form: DEVICE BAUD [Value] Argument details Name Description Device 0–7 or * to select all units BAUD Command form Value 9600, 19200, 38400, 57600 (Null to query in text)
  • Page 54 Appendices ~ Appendix E: Serial Commands COMPRESS - Compressor Adjust This command selects/reports the setting of the compressor on processing channels. Command form DEVICE COMPRESS <Channel> [Threshold] [Ratio] [Attack] [Release] [Gain] Argument details Name Description Units Device 0–7 or * to select all units COMPRESS Command form Channel...
  • Page 55 Appendices ~ Appendix E: Serial Commands DECAY - Decay Adjust This command selects/reports the setting of the decay rate for a specified input. Command form: DEVICE DECAY <Channel> [Value] Argument details Name Description Device 0–7 or * to select all units DECAY Command form Channel...
  • Page 56 Appendices ~ Appendix E: Serial Commands DFLTM - Default Meter This command selects/reports the setting of the default meter. Command form: DEVICE DFLTM [Channel] [Group] [Position] Argument details Name Description Device 0–7 or * to select all units DFLTM Command form Channel 1–12 Group...

  • Page 57: Chapter 4: Advanced Configuration

    Appendices ~ Appendix E: Serial Commands FILTER - Filter Adjust This command selects/reports the setting of filters. DEVICE FILTER <Channel> <Group> <Node> [Type] Command form: [Frequency] [Gain] [Bandwidth] Argument details Name Description Device 0–7 or * to select all units FILTER Command form Channel...
  • Page 58 Appendices ~ Appendix E: Serial Commands FILTSEL - Filter Select This command turns on and off the filters on input and audio processing channels. Command form: DEVICE FILTSEL <Channel> <Group> <Node> [Value] Argument details Name Description Device 0–7 or * to select all units FILTSEL Command form Channel...
  • Page 59 Appendices ~ Appendix E: Serial Commands FPP - Front Panel Passcode This command sets and reports the current passcode setting for the unit. Each character in the password represents a button on the front panel. See button assignment table below. When the user is requested to unlock the front panel, they must press the buttons in the sequence of the stored password.
  • Page 60 Appendices ~ Appendix E: Serial Commands GATE - Gate Status This command reports the gate status of mics. This command is read only. Command form: DEVICE GATE Argument details Name Description Device 0–7 or * to select all units GATE Command form The command will return the gate status of mic inputs 1–8 in hexadecimal.
  • Page 61 Appendices ~ Appendix E: Serial Commands GMODE - Gating Mode This command selects/reports the setting of gating mode. Command form: DEVICE GMODE <Channel> [Value] Argument details Name Description Device 0–7 or * to select all units GMODE Command form Channel 1–8 (select mic input) Value 1 = auto, 2 = manual on, 3 = manual off, Null= current mode...

  • Page 62: Running Presets

    Appendices ~ Appendix E: Serial Commands Gate report sends a report GREPORT - Gate Report on every gate change. If no This command selects/reports the gate status. mics are gated on, the Command form: DEVICE GREPORT <Value> report will be sent every 10 seconds. Argument details Name Description...
  • Page 63 Appendices ~ Appendix E: Serial Commands LFP - Lock Front Panel This command sets and reports front panel access for the unit. When the unit is locked, access is not allowed to the unit until the unit is unlocked. Command form: DEVICE LFP [Value] Argument details Name Description...
  • Page 64 Appendices ~ Appendix E: Serial Commands LOCKPRST - Apply the lock to a preset or macro Selects/reports whether the lock is applied to a preset/macro. If a preset/macro has the lock applied, it can only be changed if unlocked with the password. Command form: DEVICE LOCKPRST <Channel><Group>[Value] Argument details Name...

  • Page 65: Macros

    Appendices ~ Appendix E: Serial Commands LVLREPORT - Level Report This command selects level status reporting. Command form: DEVICE LVLREPORT <Channel> <Group> [Position] [Value] Argument details Name Description Device 0–7 or * to select all units LVLREPORT Command form Channel See Groups and Channels, page 97 Group See Groups and Channels, page 97...
  • Page 66 Appendices ~ Appendix E: Serial Commands The response indicates MACRO - Macro Execution/Reporting execution of the macro, This command executes a specified macro or reports the last macro executed. There but does not indicate that are 255 macros that can be specified. each command within the macro Command form: DEVICE MACRO [Value] was executed.

  • Page 67: Editing Macros

    Appendices ~ Appendix E: Serial Commands MDMODE - Modem Mode This command enables or disables the modem mode for the unit. When the modem mode is enabled, the modem initialization string is sent out the serial port and the serial port now requires a password before a command is processed. After five minutes of serial inactivity the passcode will be requested to continue serial activity.

  • Page 68: Running Macros

    Appendices ~ Appendix E: Serial Commands MINIT - Modem Initialization String This command sets/reports the modem initialization string of the serial port when in modem mode. Command form: DEVICE MINIT [String] Argument details Name Description Device 0–7 or * to select all units MINIT Command form String...
  • Page 69 Appendices ~ Appendix E: Serial Commands MLINE - Mic/Line Adjust This command selects/reports the setting of coarse gain adjustment on the input channels 1-8. The three settings are 0dB, 25dB, and 55dB. Command form: DEVICE MLINE <Channel>[Value] Argument details Name Description Device 0–7 or * to select all units...
  • Page 70 Appendices ~ Appendix E: Serial Commands SRC = source MTRX - Matrix DEST = destination This command selects/reports the matrix routing of an input to an output. CHNL = channel DEVICE MTRX <SRC CHNL> <SRC GRP> <DEST CHNL> Command form: GRP = group <DEST GRP>...
  • Page 71 Appendices ~ Appendix E: Serial Commands MUTE - Mute This command selects/reports the setting of mute on input, output or processing channels. Command form: DEVICE MUTE <Channel> <Group> [Value] Argument details Name Description Device 0–7 or * to select all units MUTE Command form Channel...
  • Page 72 Appendices ~ Appendix E: Serial Commands This setting is not affected NLP - Non-Linear Processing Adjust by the echo canceller This command selects/reports the setting of the Non-linear processing for each settings. microphone channel. Command form: DEVICE NLP <Channel> [Value] Argument details Name Description...
  • Page 73 Appendices ~ Appendix E: Serial Commands PAA - PA Adaptive Mode This command selects/reports PA adaptive mode for the specified mixer. There can be only one selection per mixer. Command form: DEVICE PAA <Channel> [Value] Argument details Name Description Units Device 0–7 or * to select all units Command...
  • Page 74 Appendices ~ Appendix E: Serial Commands PRGSTRING - Program String This command sets/reports a programmed string. Command form: DEVICE PRGSTRING <ID> [Value] Argument details Name Description Device 0–7 or * to select all units PRGSTRING Command 0 – 7 (string location) Value 1–80 Characters CLEAR = Clear current value...
  • Page 75 Appendices ~ Appendix E: Serial Commands RAMP – Ramp Gain Adjustment This command starts/stops the gain ramp for an input, output, or assignable processing block. There is no query for this command. Command form: DEVICE RAMP <Channel><Group><Rate>[Target] Argument details Name Description Unit Device...
  • Page 76 Appendices ~ Appendix E: Serial Commands REFSET - Reference channel setup This command selects/reports the output the reference channel tracks. Command form: DEVICE REFSET <Channel> <Group>[Value] Argument details Name Description Device 0–7 or * to select all units REFSET Command Channel 1–4 (select Virtual Reference number) Group...
  • Page 77 Appendices ~ Appendix E: Serial Commands SFTYMUTE - Safety mute Selects/reports the state of the safety mute. When on, the safety mute holds all outputs on the selected unit in a muted state. It is used primarily for troubleshooting G-Ware. Command form: DEVICE SFTYMUTE [Value] Argument details Name...
  • Page 78 Appendices ~ Appendix E: Serial Commands SIGTOUT - Signal Generator Time Out Sets the signal generator time out for the unit. Command form: DEVICE SIGTOUT [Value] Argument details Name Description Device 0–7 or * to select all units SIGGEN Command Value 0 = Off, 1–30 = Set time out minutes, Null = Current rate Example: #57 SIGTOUT 15 On XAP 800 unit 7 (#57), the signal generator...
  • Page 79 Appendices ~ Appendix E: Serial Commands TOUT - Time Out Select This command selects/reports the inactivity time out before returning to the unit title screen. Command form: DEVICE TOUT [Value] Argument details Name Description Device 0–7 or * to select all units TOUT Command Value...
  • Page 80 Appendices ~ Appendix F: Warranty Appendix F: Warranty ClearOne Communications, Inc. (Manufacturer) warrants that this product is free of defects in both materials and workmanship. Should any part of this product be defective, the Manufacturer agrees, at its option, to: A.
  • Page 81 This warranty extends only to the original end user and is not assignable or transferable. This Warranty is governed by the laws of the State of Utah, without regard to the conflicts of interests provisions thereof. ClearOne Communications 1825 Research Way Salt Lake City, Utah 84119...
  • Page 82 Changes or modifications not expressly approved by ClearOne Communications could void the user’s authority to operate the equipment. This equipment meets the following compliance standards:...
  • Page 83 Glossary Glossary Acoustic Echo Cancellation (AEC) A process in which acoustical echo is removed from a signal. AEC can be used to remove unwanted signals from mic audio if the unwanted acoustic signal is available separately as an electronic signal. Adaptive Ambient This portion of the mixer monitors the varying ambient noise level in the room and changes the threshold level at which a microphone gates on.
  • Page 84 Glossary Chairman Override Provides gating priority for chairman override enabled microphones within the same gating group. When a mic with chairman override gates on, all mics which don’t have chairman override enabled and are in the same gating group will gate off. Clipping A condition in which a signal level exceeds the maximum level a circuit can handle.
  • Page 85 Glossary Cross point The intersection between an input and an output in the routing matrix. Cross point cells are colored according to input type. Cross point attenuation The process of attenuating audio level at the cross point. Audio can be attenuated from 0 to 60dB. Decay Rate (slow, medium, fast) Determines how fast a channel gates off after hold time expires.
  • Page 86 Glossary Filter A device that passes and blocks audio signals based on user-definable requirements of the system. • All Pass A filter that provides only phase shift or phase delay without appreciably changing the magnitude characteristic. The filter produces a flat amplitude response.
  • Page 87 (Internal 1–4) or to microphones connected to other units on the network (Global A–D). Gating groups provide greater flexibility and control of mics. Gentner Distributed Echo Cancellation ClearOne’s proprietary system for applying echo cancellation individually to each mic input.
  • Page 88 Glossary Matrix Mixer A mixer that allows routing of any input or combination of inputs to an output or any combination of outputs. In the case of the XAP 800, the matrix mixer permits level control at each cross point in the matrix. Matrix Screen The Matrix Screen facilitates the routing of any input to any output or combination of outputs.
  • Page 89 Glossary Off Attenuation The amount of level reduction a microphone is given when the microphone is not gated on. PA Adaptive Mode The XAP 800 recognizes how much loudspeaker audio is picked up by the microphones and then uses this level as the new ambient level when audio is present at the power amplifier.
  • Page 90 Glossary Phase Plot A plot of phase angle (-180 to 180 degrees) vs. frequency (20Hz to 20kHz) on a logarithmic scale. Pink Noise An audio test signal containing all the frequencies in a given audio spectrum, with equal energy in each octave. Preset One of 32 configurable memories in the XAP 800.
  • Page 91 Glossary Signal Delay Used for: • Compensating for physical placement of multiple drivers in a cluster—to align points of acoustic origin in the same plane. • Ensure matching arrival times at listeners from multiple loudspeaker drivers. • Using the Haas effect to maintain localization of the source, even with a distributed system.
  • Page 92 Index Index Compressor 49–51, 85, 102, 103, 132 attack time 49, 51, 102, 131 acoustic echo cancellation 33–35, 40, 99, 131 compression meter 51 echo return loss (ERL) 35 group 50 echo return loss enhancement (ERLE) 35 input meter 51 non-linear processing (NLP) 35 post compressor gain 50 AEC settings 33–35...
  • Page 93 Index network 6, 11, 115 reference 33, 40, 58, 123 High Pass 36, 51, 85, 86, 105, 134 routing to 29, 30 hold time 39, 108, 135 Expansion Bus In/Out 5, 11, 85 Inputs 1–8 32 File Access Password 23 AEC 33 filter 35–37, 51–53, 105, 106, 134 AGC/SL 32...
  • Page 94 Index master setting 12, 15, 114 buses 7 Matrix Screen 27–32, 136 PA Adaptive Mode 38 Message Log 28, 75 password 26 meter 4 front panel 26 Meter menu 16 file access 23 Default Meter 18 macro password 64 ERL 17 modem 26 ERLE 17 preset password 56...
  • Page 95 Index phase 52 System menu 14 Device ID 15 mute 49 propagation 6, 54 Firmware Version 15 Lock Panel 14 Run Macro 14 Select Preset 14 Ramp 123 Set Passcode 15 release time 102, 138 Unit ID 15 Remote Builder 27, 78–82 system requirements 21 Remote Panel 6, 10, 57, 90, 91–92 S–Z 6, 7, 30, 158...

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