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ClearOne PSR1212 Manual

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Summary of Contents for ClearOne PSR1212

  • Page 1 PSR1212 White Paper...
  • Page 2 © 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, Inc. Printed in the United States of America. ClearOne Communications reserves specific privileges. Information in this document is subject to change without notice.

  • Page 3: Table Of Contents

    ClearOne Control Devices ........27...
  • Page 4 CHAPTER 6: PSR1212 Connections ....31 System Connections .........31 Expansion Bus Connections .

  • Page 5: Chapter 1: Introduction

    For ease of use, the PSR1212 facilitates local and remote PC setup and diagnostics, logic outputs, and gated microphone operation. Microphone inputs can be individually customized to gate on and off as you want, while automatic gain control keeps the overall sound level consistent.
  • Page 6 • One-year limited warranty. PSR1212 enhancements The current G-Ware release provides several enhancements to the PSR1212 that are designed to help with system configuration. • Virtual references. Four user-definable virtual references can use multiple signals as the PA adapt reference without sacrificing an analog output.

  • Page 7: Controls And Connections

    B. Inputs 1–8. For mic and/or line level inputs. C. RS-485 Remote Control Ports. These four-pin Phoenix ports allow you to control the PSR1212 with a ClearOne Control Panel or the XAP IR Remote Control. D. Outputs 1–8, 9–12. Line level outputs that may be configured for any combination of gated and non-gated inputs, as well as a mix of mic and line level inputs.

  • Page 8: Expansion Bus Connections

    Equipment placement The PSR1212 is designed for a 19" equipment rack. With a desktop kit, it can be modified for tabletop placement. The PSR1212 can safely operate in temperatures between 32°–110° F/0°–38° C. Do not block any of the ventilation holes.
  • Page 9 Introduction ~ Expansion Bus Connections Figure 1.3. Typical PSR1212 installation (simplified for illustrative purposes) Technical Services Group: 1-800-283-5936 (USA) ~ 1-801-974-3760...
  • Page 10 Introduction ~ Expansion Bus Connections PSR1212 block diagram Technical Services Group: 1-800-283-5936 (USA) ~ 1-801-974-3760...

  • Page 11: Chapter 2: Inputs And Outputs

    CHAPTER 2: The PSR1212 has 12 inputs consisting of eight mic/line inputs and four line inputs. The unit has 12 line outputs. All inputs and outputs are actively balanced. Inputs 1–8 have 4kΩ of terminating impedance while line level inputs 9–12 provide >20kΩ...

  • Page 12: Line Inputs

    Inputs and Outputs ~ Line Inputs System Wide Automatic Mixing Parameters Phantom Power Input Non Gated Audio On/Off Gain To Matrix Gated Audio Automatic High Pass Inputs 1–8 Channel Automixer Filter Gain Control Mute On Off On Off On Off Chairman Override Mic/Line selection On / Off...

  • Page 13: Line Outputs

    Unlike most automixers that have a single master NOM output, the PSR1212 provides a NOM setting at every output. Activation of NOM places this output only in a mode where, as more microphones routed to this output are gated on (either by auto gate or manual gate), the total overall output gain will remain constant.
  • Page 14 Technical Services Group: 1-800-283-5936 (USA) ~ 1-801-974-3760...

  • Page 15: Chapter 3: Automatic Mic Mixing

    Automatic Mic Mixing ~ Intelligible, Reliable Audio Automatic Mic Mixing CHAPTER 3: Intelligible, Reliable Audio Audio systems are in constant use in auditoriums, arenas, boardrooms, training rooms, and many other applications. Systems that produce intelligible and reliable audio are key to facilitating effective communication. Quality audio systems meet the following objectives: •...

  • Page 16: Automixing With The Psr1212

    Figure 3.2. Microphone activation functions that are implemented on both a per- channel basis and across the entire automatic mixer. These functions are described on page 13. Each PSR1212 can have four separate automatic mixers working independently or as a single unit.
  • Page 17 Automatic Mic Mixing ~ Automixing with the PSR1212 In addition, more microphone channels can be added by linking PSR1212 units via the expansion bus, the digital network bus. Unlike other “expandable” automatic microphone mixers, the PSR1212 works as a single unit for up to eight units networked together, for a total of 64 microphones.
  • Page 18 Automatic Mic Mixing ~ Automixing with the PSR1212 Chairman Override Chairman Override provides gating priority for this mic input over any other mic input within the same gating control (mixer) groups. When a mic with Chairman Override enabled gates on, all mics which don’t have Chairman Override enabled will gate off.
  • Page 19 However, global control of the system is still maintained by whichever PSR1212 unit is connected to a control device through its RS-232 or RS-485 ports. Control is not affected by master/slave designations.
  • Page 20 Last On leaves the mic that was activated last full on until another mic input is gated on. The Input setting allows you to select which mic input the PSR1212 leaves on when all mics gate off. In a boardroom or meeting room application, this feature can be used to specify the chairperson’s mic as the last mic on.
  • Page 21 Automatic Mic Mixing ~ Automixing with the PSR1212 Parameter Effect Range Description Mixer mode System-wide Master, slave Selects mixer mode of operation. Auto gate, manual Inputs 1–8 Microphone Activation Sets the method of microphone gating. gate, on/off When a chairman override channel is gated Inputs 1–8...
  • Page 22 Technical Services Group: 1-800-283-5936 (USA) ~ 1-801-974-3760...

  • Page 23: Chapter 4: Audio Routing

    Matrix Mixing One of the more important functions of the PSR1212 is matrix routing of audio signals. Like all device functions, routing is executed in the digital domain. Routing is configured using G-Ware and a direct connection between a PC and the PSR1212 unit.
  • Page 24 CD player, VCR, and other auxiliary audio sources. In typical applications, this audio must be heard in the local PA system (as well as networked PSR1212 units). In the default routing, audio is routed to every other device except itself.

  • Page 25: Worksheets

    Worksheets The worksheets provided on the following page are to help you understand all PSR1212 system functions as you design a system. Refer to the back of this document for a complete set of PSR1212 worksheets. Default settings appear in bold.
  • Page 26 Audio Routing ~ Worksheets PSR1212 System Parameters Worksheet Systemwide Parameters Program Parameter Selection Range Program Parameter Selection Range 0 - 15 (5) Master, Slave Timeout Mixer Mode On, Off 9.6, 19.2, 38.4, 57.6, 115.2 kbps Lock Front Panel RS-232 Baud Rate...

  • Page 27: Chapter 5: System Control

    CHAPTER 5: The PSR1212 provides a variety of options for system control. You can create up to 32 presets and up to 255 macros to change whole room configurations or run a series of commands. Presets, macros, and commands can be executed using...

  • Page 28: Control And Status Connectors

    The outputs are open collectors, which are open when inactive and grounded when active. This allows the PSR1212 to control and be controlled by a wide variety of external devices, including relays, lamps, switches, and other equipment.
  • Page 29 System Control ~ Control and Status Connectors Control/Status Connector Status Command +5VDC@300mA Figure 5.3. Direct control/status operation Controls for each room Room combining controls Combined Separate Mute VOLUME 1 + 2 1 + 2 + 3 3 + 4 Room combining Volume All separate Status...
  • Page 30 System Control ~ Control and Status Connectors Control/Status A Control/Status B Definable Type Default Description Definable Type Default Description Control Lock front panel toggle Control Preset select bit Status Status of front panel lock Status Preset select status (Pin 1) Control Mute all mics toggle Control...

  • Page 31: Clearone Control Devices

    Remote Panel A or Remote Panel B—the RS-485 connectors. Volume and Select Control Panels ClearOne Control Panels are convenient wall panels which provide control over the PSR1212 system. There are two Control Panel models: Volume and Select. Volume has three programable buttons that were primarily designed to control gain and mute but can be programmed with any command.

  • Page 32: Serial Control (Rs-232)

    System Control ~ Serial Control (RS-232) Serial Control (RS-232) Operation of linked PSR1212 units can be done with one RS-232 serial connection. Functions which can be controlled via this connection include audio level control, muting, audio signal routing, telephone dialing, remote diagnostics, and many other functions.

  • Page 33: Front Panel

    System Control ~ Front Panel Front Panel The PSR1212’s front panel is intuitive to operate, thanks to its simple interface: a 2x16 character LCD, menu buttons, and a peak-level LED bar meter. Although most of the PSR1212’s features are programmed with G-Ware software, the front panel can be used for simple adjustments and meter monitoring.
  • Page 34 Technical Services Group: 1-800-283-5936 (USA) ~ 1-801-974-3760...

  • Page 35: Chapter 6: Psr1212 Connections

    Meters The PSR1212 has an LED meter and an LCD. Whenever the input, output, or room loss menus are accessed, the meter displays the level of the parameter selected. When not in the input, output, or room loss menus, the default meter is shown.

  • Page 36: Expansion Bus Connections

    The expansion bus is a high-speed network protocol that provides two primary system functions: 1) communications among units, and 2) audio linking. All functions of the PSR1212 are available across a system of linked PSR1212 units, which allows automixing of up to eight PSR1212 units, 64 microphones, and 32 line inputs.
  • Page 37 All gated mics are default routed to the A mixer and to the O bus for routing. Connecting to the expansion bus Each PSR1212 comes standard with one expansion bus cable. The maximum distance allowed between any two PSR1212 units on an expansion bus network is 80 feet (24 meters). ClearOne Communications recommends that category five twisted-pair (10BaseT) cable be used.
  • Page 38 Technical Services Group: 1-800-283-5936 (USA) ~ 1-801-974-3760...

  • Page 39: Chapter 7: Applications

    (see Figure 8.1). To eliminate the imbalance caused by sound reaching a listener’s ears at different times from the fill speakers and the horn speakers, you can program the PSR1212 to introduce a delay to the fill speakers. The PSR1212’s G-Ware software can calculate distances in feet and meters to help establish the amount of delay required.
  • Page 40 Main floor seating area Figure 7.1. Typical auditorium layout PC (for set up; Control Microphones not necessary for Panel system operation) (optional) PSR1212 Logic Out Status and Control Tape Recorder Power Amp Fill speakers Left spkr Right spkr Floor short...

  • Page 41: Arena Installation

    During a typical sports event, you might want to use a PSR1212 preset configured to send the announcer’s voice to the central speaker array (with the CD Horn EQ enabled), with a delayed signal sent to the fill speakers. Rally music, either pre-recorded or from an instrument such as an organ, can be routed to the same speakers, with various filters configured to enhance the audio quality of the source.

  • Page 42: Movie Theater Installation

    A multiple-channel theater surround sound system is shown in Figure 7.5, and a connection diagram is shown in Figure 7.6. The PSR1212 can customize the response of each loudspeaker through the use of parametric equalizers, filters, and compressors designed to compensate for speaker and room characteristics and deficiencies. A complete description of these adjustable parameters (and how to configure them) is found in the PSR1212 Installation and Operation Manual.
  • Page 43 Right front Figure 7.5. Movie theater layout PC (for set up; Projector Control not necessary for Panel system operation) (optional) Surround Sound Processor PSR1212 Logic Out Status and Control Power Amp Power Amp Power Amp Lobby speakers Microphone Left rear...

  • Page 44: Gymnasium Installation

    Gymnasium sound systems are called upon to meet the needs of a variety of scenarios, from sports announcing to meetings to student skits and productions. In all cases, the PSR1212 can adapt the sound system to accommodate the demands required.

  • Page 45: Hotel/Convention Center Installation

    By configuring the presets on the PSR1212, the system can be quickly reconfigured in a way that accommodates the changing of room configurations in some meeting areas without disturbing meetings in other rooms where no room configuration changes are necessary.
  • Page 46 Control Panel Mic 7 Mic 8 Control Panels (optional) PC (for set up; Mics not necessary for system control) PSR1212 Logic Out Status and Control Power Amp Mics Speakers Room A Room B Room C Room D Figure 7.10. Hotel/convention center installation...

  • Page 47: Conference Room Installation

    Figure 7.11 shows a conference room area with a main meeting area and six smaller meeting rooms adjoining the main area. The PSR1212 enhances the flow of audio between the main meeting area and the adjoining small rooms, and can also facilitate exclusive communication between the small rooms.

  • Page 48: Training Room Installation

    The left and right speakers at the front of the room can be configured to provide stereo sound from a (stereo) secondary audio source, enhancing the training experience. All speakers can be optimized to produce full-fidelity audio by programming the PSR1212’s parametric equalizers and filters accordingly. Technical Services Group: 1-800-283-5936 (USA) ~ 1-801-974-3760...
  • Page 49 Mic 4 Right speaker Figure 7.13. Training room PC (for set up; not necessary for Microphones Control system operation) Panel (optional) PSR1212 Logic Out Status and Control Power Amp Mics Lapel mic receiver Lapel Left front Right front Zone 1...

  • Page 50: Boardroom Installation

    A typical PSR1212 installation involves establishing a preset where the chairman’s microphone (mic 1) is given gating and override priorities over the other microphones. Also, whenever a given microphone gates on, audio to that participant’s loudspeaker gates off to prevent feedback, and the volume level of the microphone to adjacent speakers...

  • Page 51: Corporate Paging System

    Such systems are often used for playing background music, particularly in lobby areas. With the PSR1212, you can establish customized paging zones where various equalizers and filters are configured to enhance the fidelity of sound in the system. This can help compensate for room acoustical characteristics and equipment deficiencies to provide a consistent audio response throughout a given zone or combination of zones.
  • Page 52 Figure 7.17. Corporate paging system Power Amp Paging zone control PC (for set up; (optional) not necessary for Zone 8 Zone 9 system operation) Speakers PSR1212 Logic Out Status and Control Line level input Power Amp Phone/paging system Tape Deck Zone 7...

  • Page 53: Appendices

    Appendices ~ Appendix A: Specifications Appendices Appendix A: Specifications Dimensions (LxDxH) +15VDC (300mA over-current Low shelving 17.25" x 10.25" x 1.25" protected) High shelving Parametric EQ 43.8 x 26 x 4.5 cm Mic/Line inputs 1–8 Notch Weight Push-on terminal block, balanced, CD Horn 7 lb/4.5 kg dry bridging...

  • Page 54: Appendix B: Architectural And Engineering Specifications

    The unit shall have an internal power supply that automatically adjusts between 100-240VAC of power input. The unit shall comply with FCC, CSA, IC, CE, NOM, ACA, SABS, VCCI, and JATE requirements. The ClearOne PSR1212 is specified. Technical Services Group: 1-800-283-5936 (USA) ~ 1-801-974-3760...

  • Page 55: Appendix C: Worksheets

    Appendix C ~ Worksheets Appendix C: Worksheets ClearOne PSR1212 Technical Services Group: 1-800-283-5936 (USA) ~ 1-801-974-3760...
  • Page 56 Appendix C ~ Worksheets ClearOne PSR1212 Technical Services Group: 1-800-283-5936 (USA) ~ 1-801-974-3760...
  • Page 57 Appendix C ~ Worksheets ClearOne PSR1212 Technical Services Group: 1-800-283-5936 (USA) ~ 1-801-974-3760...
  • Page 58 Appendix C ~ Worksheets ClearOne PSR1212 Technical Services Group: 1-800-283-5936 (USA) ~ 1-801-974-3760...
  • Page 59 Appendix C ~ Worksheets Technical Services Group: 1-800-283-5936 (USA) ~ 1-801-974-3760...
  • Page 60 Appendix C ~ Worksheets Technical Services Group: 1-800-283-5936 (USA) ~ 1-801-974-3760...

  • Page 61: Appendix D: Glossary

    Automatic Gating Automatically gates microphones on or off based on input levels and other parameters programmed into the PSR1212. Bandwidth The amount of spectrum space a signal occupies. For the PSR1212, it is adjustable from .05 to 5 octaves. Changing the bandwidth setting affects the Q setting.
  • Page 62 Appendix D ~ Glossary Expansion Bus Consists of two RJ-45 connectors on the rear panel of the PSR1212. An expansion bus allows multiple PSR1212s to be networked together using category five twisted-pair (10BaseT LAN) cable. Filter A device that passes and blocks audio signals based on user-definable requirements of the system.
  • Page 63 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 PSR1212, the matrix mixer permits level control at each cross point in the matrix.
  • Page 64 Appendix D ~ Glossary Reverberation Multiple reflections of sound waves in a room. Signal Delay Used for introducing a delay to fill speakers in an audio system to provide balanced sound throughout the room. Table View Displays the numerical values of the filter parameters for all nodes of the active filter display. Tone Generator A device for generating a reference tone for sound system calibration purposes.
  • Page 65 Technical Services Group: 1-800-283-5936 (USA) ~ 1-801-974-3760...
  • Page 66 ClearOne Communications ~ 1825 Research Way, Salt Lake City, UT 84119 ~ tel 1-800-945-7730 ~ fax 1-800-933-5107 © 2002 ClearOne Communications, Inc.. All rights reserved. Information in this document subject to change without notice.

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