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Broadcast Tools ADMS 44.22 Installation And Operation Manual

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Installation and Operation Manual
ADMS 44.22
AES Digital Matrix Switcher
Firmware Version 1.2 or above
Manual Update: 09/20/2007
Due to the dynamic nature of product design, the information contained in this
document is subject to change without notice. Broadcast Tools, Inc., assumes no
responsibility for errors and/or omissions contained in this document. Revisions
of this information or new editions may be issued to incorporate such changes.
Broadcast Tools® is a registered trademark of Broadcast Tools, Inc.
Copyright, 1989 - 2007 by Broadcast Tools, Inc. All rights reserved.
No part of this document may be reproduced or distributed without permission.
Visit www.broadcasttools.com for important product update information.

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Summary of Contents for Broadcast Tools ADMS 44.22

  • Page 1 Manual Update: 09/20/2007 Due to the dynamic nature of product design, the information contained in this document is subject to change without notice. Broadcast Tools, Inc., assumes no responsibility for errors and/or omissions contained in this document. Revisions of this information or new editions may be issued to incorporate such changes.

  • Page 2: Table Of Contents

    ADMS 44.22 Installation and Operation Manual Table of Contents Section Title Page # Functional Description ..................5 Introduction....................5 DSP Processing..................6 1.2.1 Matrix Switcher ..................6 1.2.2 Automatic Level Control ...............7 1.2.3 Equalizer ....................8 1.2.4 Sample Rate Conversion................8 Synchronization and Clocking...............9 Interconnect Port..................9 Preset Memory..................9...
  • Page 3 ADMS 44.22 Installation and Operation Manual Table of Contents - cont’d 3 Front Panel Operation ..................21 Front Panel Buttons ................21 Front Panel Controls & Indicators............22 Headphone Level .................23 Powered Monitor Level ...............23 4 RS-232 Operation.....................24 Introduction..................24 Burst Mode Command Format ............24 Set-up Commands................25...

  • Page 4: Safety Information

    ADMS 44.22 Installation and Operation Manual INTRODUCTION CAUTION! Thank you for your purchase of a Broadcast Tools® ADMS 44.22 Analog / AES Digital Matrix Switcher (referred to as the ADMS 44.22 throughout this manual). Broadcast Tools® We’re confident that this product will give you many years of dependable service.

  • Page 5: Functional Description

    Fade rates, dim levels, and mix modality are all fully programmable. The ADMS 44.22 is equipped with a digital expansion port that allows two units to operate together as a 16x2 stereo matrix switcher. The ADMS 44.22 can be con-...

  • Page 6: Dsp Processing

    (mute) any input in any combination to one or both outputs. All basic switcher func- tions can be performed using either the front panel buttons or remote switch or open collector closures. The ADMS 44.22 front panel has one pushbutton for each stereo input channel, and four modifier buttons. Switcher operations are executed by pressing either one or several buttons in combination.

  • Page 7: Automatic Level Control

    • Fade Up/Fade Down The ADMS 44.22 can fade one or more channels up or down at a prepro- grammed Fade Rate ranging from 0.5 to 10.0 seconds. The Fade Rate is global for all channels. In Interlock and Overlap Modes, fading one channel up initiates an automatic equal-power cross fade by fading down any con- nected input(s) at the same rate.

  • Page 8: Equalizer

    The ADMS 44.22 is capable of performing high-quality, real-time sample rate conversion (SRC) on any asynchronous single-wire (2-channel) AES input sig- nal with sample rates ranging from 32 kHz to 96 kHz for all supported ADMS 44.22 sample rates. Sample rate conversion operates independently for each AES input, thus making it possible to accept multiple asynchronous digital sources running at different nominal sample rates.

  • Page 9: Synchronization And Clocking

    ADMS 44.22 Installation and Operation Manual Synchronization and Clocking The ADMS 44.22 supports internal and external sample clock rates of 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, and 96 kHz, and can be synchronized to external digital devices using the Word Clock In and Word Clock Out connectors on the rear panel.

  • Page 10: Serial Communication

    Mode uses short-form commands (and responses) with a prescribed syntax to facili- tate scripting and integration into automated control systems. Menu Mode uses text- readable menus and prompts to guide the user. All ADMS 44.22 commands can be executed using Burst Mode commands, whereas Menu Mode provides access to only the most frequently-used setup parameters and contains no switcher commands.

  • Page 11: Status & Gpo Outputs

    OC Pulse Length setting, or toggle on/off continuously. 1.7.3 Relays The ADMS 44.22 has four normally open SPDT relay outputs (K1 – K4) on the rear panel. Unlike the open collector outputs, relay function is not modal. Therefore the relays can be used at any time.

  • Page 12: Setup & Installation

    CAUTION! Mounting Installation The ADMS 44.22 is designed to be rack mounted in a standard EIA 19” rack. ADMS 44.22 in high RF It should be mounted in an area that is accessible from the rear and away from sources environments should be of heat and moisture.

  • Page 13: Product Updates And

    (double speed) mode. In single wire mode both the left and right channels are transmitted at 2x the base AES frame rate (44.1 / 48 kHz). The ADMS 44.22 does not support double-wire mode, which transmits two consecutive samples of the same channel at the base AES frame rate and requires two AES connections to con- vey a stereo signal.

  • Page 14: Word Clock In/Out

    AES signal. Word Clock In/Out The ADMS 44.22 Word Clock In and Word Clock Out jacks are 75Ω BNC connec- tors located on the rear panel. The Word Clock input is internally terminated with a 75Ωresistor, and therefore requires no external termination.

  • Page 15: Rs-232 Serial Port

    RS-232 Terminal Communications Settings With higher baud rates the overall RS-232 cable length between the terminal and the ADMS 44.22 should be kept to approximately 10’, following the EIA rec- ommendations for serial cable length. Longer cable runs may be used with lower baud rates (up to 50’...

  • Page 16: Controlling Multiple Adms 44.22 Units

    Alternatively, multiple units can be controlled from a single USB port using a multi- port USB to RS-232 adapter. In this case, each ADMS 44.22 unit is connected to its own RS-232 serial port, as shown in the diagram below.

  • Page 17: Remote Control / Gpi (Pip) Inputs

    Menu Mode operation. Terminal applications such as VanDykeTM CRT allow the operator to individually setup and control each RS-232 com port from within its own tab so that all ADMS 44.22 units can be controlled from a single terminal application.

  • Page 18: Relays

    The relay contacts are rated for 1A at 30V (AC or DC), and are linearly derated to 0.3A at 120V. Both relay contacts are electrically isolated from the unit. ADMS 44.22 Open Collector Output Wiring Diagram 2.13 Options Switch The 10-posiiton rear-panel options DIP switches control fundamental oper- ating settings such as the Unit ID, RS-232 Baud Rate, and Master/Slave Mode.
  • Page 19 ADMS 44.22 Installation and Operation Manual Unit ID (SW1 – SW3) The Unit ID is assigned using the first three DIP switches according to the following table: ID 0 ID 1 ID 3 Unit ID Unit ID Settings When two or more units are connected to a single serial port using multi- drop RS-232, then each unit must be assigned a unique Unit ID.

  • Page 20: Power Supply

    ADMS 44.22 Installation and Operation Manual Master/Slave Mode (SW9) CAUTION! Sets up the unit to run in Master or Slave Mode. In Master Mode, the unit acts as Failure to set SW10 to Single/Dual Unit Operation (SW10) single when operating...

  • Page 21: Front Panel Operation

    ADMS 44.22 Installation and Operation Manual Front Panel Operation Front Panel Buttons All basic switcher functions can be performed from the front panel by press- ing one or a combination of the 12-switcher control buttons. The same functions can likewise be performed using the Remote Control inputs associated with each button.

  • Page 22: Front Panel Controls & Indicators

    ADMS 44.22 Installation and Operation Manual Front Panel Controls & Indicators The ADMS 44.22 front panel LED indicators, shown in the picture below, display of the following operational information: ADMS 44.22 Front Panel Indicators OP 1 Input Connected to Output 1 [Green] Indicates when an in input is connected to Output 1.

  • Page 23: Headphone Level

    Meter-Mon Sel LED located to the right of the OP 2 button. Holding the OP 2 button for 2.5 seconds switches the monitor source between Output 1 and Output 2. ADMS 44.22 Headphone & Powered Monitor Controls INSTALLATION e-mail: support@broadcasttools.com...

  • Page 24: Rs-232 Operation

    8 x 2 Matrix Audio Control Switcher command set. Many ACS 8.2 commands have been preserved in the ADMS 44.22 to allow users to easily integrate the ADMS 44.22 into facilities that currently support ACS 8.2 remote control. ADMS 44.22 commands that are backwards–compatible with the ACS 8.2 command set are indi-...

  • Page 25: Set-Up Commands

    OL[ic][x] Set Analog Input Operating Levels Sets the nominal analog input operating level. The ADMS 44.22 is designed with 20dB of headroom above the nominal operating level before digital clip- ping occurs. Therefore a +10 dBV input signal will produce 0 dBFS with a Consumer operating level, and a +24 dBu input signal will produce 0 dBFS with a Pro operating level.

  • Page 26: Reset And Firmware Update Commands

    The programming and reset commands are special commands that are received and executed by the serial communications processor. All other commands communi- cate with the ADMS 44.22 DSP processor. These commands are not unit-specific. Sending one of these commands affects all units connected to the terminal. For this rea- son they do not follow the standard command format.
  • Page 27 Last Saved settings or User Preset, according to the setting of the PWR UP switch (SW6). If for any reason the Xmodem fails to complete, the ADMS 44.22 will time out after not receiving data for more than one second and go back to waiting for a new Download Firmware operation.

  • Page 28: Relay And Open Collector Commands

    ADMS 44.22 Installation and Operation Manual ory has been erased from flash and the unit becomes inoperable except for the ability to download new firmware. Once an XModem transfer fails, the baud rate of the unit reverts to the 9600 baud default for all subsequent serial com- munications.

  • Page 29: Query Commands

    ADMS 44.22 Installation and Operation Manual Query Commands Poll Poll Units (ACS 8.2) Queries the RS-232 bus to detect which units are connected. In a multi-drop RS-232 setup, units respond with delays proportional to the Unit ID so that no units will have their transmitters enabled at the same time.
  • Page 30 ADMS 44.22 Installation and Operation Manual The switcher connection state is determined by the gain of the connection. When the gain = -INF, the input is Disconnected. If the Gain is ≠ -INF, then the input is Connected. Therefore, when an input is faded down, the SL command will not return a Disconnected state until the fade completes.
  • Page 31 ADMS 44.22 Installation and Operation Manual Display Open Collector Status (ACS 8.2) Returns the current status of open collector outputs OC1 through OC9. [yocn] 0 = Unlatched (High/Off); 1 = Latched (Low/On) Response: S[u]O,[yoc1],[yoc2],[yoc3],[yoc4],[yoc5],[yoc6],[yoc7],[yoc8],[yoc9]<CR>< LF> Display AES Error Status Returns the contents of the AES error register for digital Inputs 1 through 4.

  • Page 32: Equalizer Commands

    ADMS 44.22 Installation and Operation Manual Equalizer Commands EQB[ic][b][x] Enable Equalizer Band Enables input channel equalizer bands. The EQB command can be applied to a single band on a single input, all bands on a single input, a single band on all inputs, or all bands on all inputs.

  • Page 33: Alc Commands

    ADMS 44.22 Installation and Operation Manual Analog Input 3 B1 Bypassed T:Low Shelf G: 0.0 F: 20.0 Q: 1.0 B2 Bypassed T:Peaking G: 0.0 F: 1000.0 Q: 1.0 B3 Bypassed T:High Shelf G: 0.0 F:20000.0 Q: 1.0 Analog Input 4 B1 Bypassed T:Low Shelf G: 0.0 F: 20.0 Q: 1.0...
  • Page 34 ADMS 44.22 Installation and Operation Manual Target Output Level must be ? the ALC Threshold Level; setting the ALC Target Output Level < the ALC Threshold Level sets the ALC Target Output Level = the ALC Threshold Level. Target Output Level Range = 0.0 ? -40.0 (dBFS) ALCT1[ic][x] Set Input ALC Threshold Level Sets the target output level for the input channel ALCs.

  • Page 35: Preset Management Commands

    Bypassed O:-20.0 T:-50.0 R: 1.5 Preset Management Commands CDEF Load Factory Default Settings (ACS 8.2) Loads the factory default settings for the unit. The factory defaults for each ADMS 44.22 control are described in the table below: Parameter Setting Sample Rate...

  • Page 36: Audio Switcher: Non-Modal Connect Commands

    ADMS 44.22 Installation and Operation Manual Load Factory Default Settings Loads the factory default settings for the unit. Identical to the CDEF com- mand. Save User Preset Stores the current unit parameter settings into user preset memory. All parameters listed in the factory default settings table are stored into the user preset.

  • Page 37: Audio Switcher: Modal Connect Commands

    ADMS 44.22 Installation and Operation Manual 4.11 Audio Switcher: Modal Connect Commands Modal connect commands connect inputs to outputs within the rules for Mix, Interlock, and Overlap Modes as though the same action were performed from the front panel. For example, issuing a modal connect command connects the selected input to the selected output, and mutes all other inputs connected to the same output.

  • Page 38: Audio Switcher: Mute Commands

    ADMS 44.22 Installation and Operation Manual 4.12 Audio Switcher: Mute Commands Mute commands are non-modal. Muting an input affects only the selected channel, regardless of the Switcher Mode. MUTE[ic][oc]Mute Input in Output Mutes a single input in a single output. The MUTE command can also mute a single input in both outputs, all inputs in a single output, or all inputs in both outputs.

  • Page 39: Audio Switcher: Fade Commands

    ADMS 44.22 Installation and Operation Manual DML[ic][x] Set Dim Level Sets the dim level for one or all input channels. The dim level for an input is used for dimming the input in both outputs 1 and 2. Dim Range = 0.0 ? -20.0 (dB)

  • Page 40: Menu Mode

    ADMS 44.22 Installation and Operation Manual 4.15 Menu Mode Menu Mode is an interactive text entry mode that allows the user to view and change many of the most commonly accessed settings without having to refer to the RS-232 command set documentation.

  • Page 41: Specifications

    ADMS 44.22 Installation and Operation Manual Specifications Nominal Input Level +4 dBu or –10dBV (selectable) Maximum Input Level +23.5 dBu ± 0.1dB @ +4 dBu Analog Operating Level +9.3 dBV ± 0.1dB @ -10dBV Analog Operating Level Analog Input Impedance >...

  • Page 42: Warranty

    If Broadcast Tools is notified, in writing, of a failure of any item manufactured by Broadcast Tools to conform to the foregoing Limited Warranty within one (1) year following the date of the Buyer’s acquisition of the item, and if the item is returned to Broadcast Tools in accordance with Broadcast Tools’...
  • Page 43 ADMS 44.22 Installation and Operation Manual ADMS 44.22 Analog / AES Digital Matrix Switcher CAUTION! Functional Diagram A signal flow diagram of the ADMS 44.22 (configured as a Master) is shown below: Broadcast Tools products, as any elec- tronic device, can fail Output 1 –...

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