1 AMS16 2AM & AMS16 2AEM 16 CHANNEL AUDIO MONITORING SYSTEM by Ward Beck Systems Rev:Nov
2 Cautionary Information There are no user serviceable components in this unit. Repairs and calibration should only be performed by factory trained personnel. Removing the top cover of this unit will expose the user to potentially lethal AC voltages and will void the warranty. Contact our Service department: or toll free In Case of Problems Should any problem arise with your unit, please contact the Ward Beck Technical Support Department. A Return Material Authorization number (RMA) will be issued to you, as well as specific shipping instructions, should you wish our factory to repair your unit. If required, a temporary replacement unit will be made available at a nominal charge. Any shipping costs incurred will be the responsibility of you, the customer. All products shipped to you from Ward Beck Systems Ltd. will be shipped collect. The Ward Beck Technical Support Department will continue to provide advice on any product manufactured by Ward Beck Systems, beyond the warranty period without charge, for the life of the equipment.
3 Chapter 1 Introduction 1.1 Features Two SDI inputs (3G SDI, HD SDI or SD SDI) Two reclocked SDI outputs of the selected input Up to eight de embedded AES unbalanced outputs (sixteen channels) from selected SDI source Sixteen 58 segment tri color LED bar graph level meters with simultaneous PPM dot over VU bar Can optionally decode Dolby E or AC 3 (on AMS16 2AEM model) Dolby Metadata output on 9 pin DB9 M connector (Optional AMS16 2AEM model) Eight analog outputs on a DB 25 connector Multi channel to stereo downmix capability Stereo mixing Two internal speakers Headset output Correlation display of selected channels
4 Chapter 2 Installation and User Interface This chapter provides information on unpacking and installation of the unit and a description of the inputs, outputs and user interface located on the front and rear panels. 2.1 Unpacking Please inspect the unit carefully to ensure that damage has not occurred during shipping. Report any damage immediately to the factory and note any obvious damage to the packaging. 2.2 Installation and Setup Mounting The AMS16 2 mounts in a standard 19 inch rack and occupies two rack units of space Cable Connections Connections to the unit are made on the rear panel. description of each connection. Refer to section 2.4 for a HD SDI maximum cable length using Delco cable or equivalent is 100 Meters (328 feet). 3G SDI maximum cable length using Delco cable or equivalent is 75 Meters (246 feet).
5 2.3 Front Panel User Interface The following section lists and describes the features located on the front panel of the AMS16 2 series. Figure illustrates the location of each feature.
6 2.3.1 Audio Level Meters (1 16) Sixteen 58 segment tri colour LED bar graph meters with simultaneous PPM dot over VU bar indicate the de embedded audio levels. The meters are divided into eight AES pairs Alphanumeric Display Eight character Alphanumeric Display used to display necessary information Correlation Meter Indicator of the phase relationship between the left and right channel of the monitored AES pair Internal Speakers A set of mid range and woofer speakers are located on the left and right side of the unit allowing audio monitoring as a stereo pair Headset Jack Audio can be monitored using a headset. Plugging in the headset will mute the internal speakers Audio Level Indicator These numbers indicate the difference between the audio level and reference level in dbfs. The factory default reference level is set to 20 dbfs and is indicated by the zero reference mark on the Audio Level Indicator. The reference level is adjustable in the configuration menu DD LED Optional on the AMS16 2AEM model: A yellow LED indicating that a Dolby E or AC 3 signal is present at the specified de embedded audio location when illuminated.
7 2.3.8 ERR LED A red LED indicating that no valid audio data is present at the specified de embedded audio location when illuminated Audio Monitor Select Eight Audio Monitor Select pushbuttons are located below the eight pairs of AES Audio Level Meters. The Monitor Select pushbutton instructs the unit to monitor the selected AES signal. Pushbutton will illuminate when selected L (Left) and R (Right) Channel Solo When pressed, the L or R SOLO pushbutton will illuminate, audio from a single left or right channel is heard on the internal speakers and a mono output of the left or right channel is present on the rear MONITOR output. Return to the normal monitoring state by pressing the illuminated L or R pushbutton again MULTI Mode Select Press the MULTI Mode pushbutton to cycle between Demux, Dolby, Multi (Downmix) and Summing modes. Refer to chapter three for full details on settings and applications for each mode SDI INPUT Select SDI INPUT Select pushbutton allows the user to monitor SDI IN1 or IN2. When selected, the pushbutton will illuminate Volume Control Rotate knob to raise or lower the audio level of the selected signal on the local speakers and MONITOR outputs. Volume Control may affect the levels of the AES and Analog outputs when O/P is set to VAR within the menu settings. The level is displayed in db over a range that includes OFF and 60 db to +15 db in 1dB steps.
8 Pressing the VOLUME knob once will mute. Pressing the knob again will un mute. When audio is muted, the character read out will display Mute. 2.4 Rear Panel Connections The following section lists and describes the connections located on the rear panel of the AMS16 2. Figure illustrates the location of each connector Analog Audio Output (AUX1) A configurable eight channel Analog Audio Output is available for surround sound or stereo audio monitoring on an external device Dolby E Metadata Output
9 Output provides a copy of the Dolby E Metadata found within the Dolby stream. Valid Metadata is available only when the unit is in Dolby mode. This connector is only provided on the optional Dolby installed AMS16 2AEM model SDI Input SDI Output The unit will accept two SDI signals of standard definition (SD), as per SMPTE 259M, high definition (HD), as per SMPTE 292M formats and 3G SDI as per SMPTE 424M. The unit provides two re clocked SDI outputs of the selected SDI input AES Audio Output The AMS16 2 provides up to eight unbalanced AES audio outputs on BNC connectors. The audio on the rear AES output follows the front panel Audio Level Meters. The relationship is shown on table AES Output Number Audio Level Meter Number* 1 1,2 2 3,4 3 5,6 4 7,8 5 9, , , ,16
10 2.4.6 Audio Monitor Output * An exception to the previous table occurs when surround sound monitoring of Dolby E or AC 3 audio on external speakers. Refer to chapter three for details. Table Routing of AES Outputs 1 8 Two unbalanced BNC Audio Monitor outputs are available for monitoring the selected AES audio. Press one of the eight Audio Monitor Select pushbuttons to monitor the respective digital audio pair. Chapter 3 Applications This chapter describes the audio monitoring options and setup for Dolby E, Dolby AC 3 and PCM audio, on the optional Dolby installed AMS16 2AEM model. 3.1 Embedded Dolby E and AC 3 The AMS16 2AEM will accept and decode Dolby E and Dolby AC 3 signals. When a Dolby signal is demuxed from the SDI video stream the unit indicates its location by illuminating the DD (Dolby detected) LED located above the Monitor Select pushbutton. Refer to figure for location of DD LED location Dolby Decoding Before attempting to decode a Dolby signal, ensure that: 1. Dolby mode is enabled in the configuration setup menu. 2. Before entering Dolby mode, ensure that the Dolby signal to be decoded is selected by pressing the appropriate Monitor Selector pushbutton within Demux Mode. In Demux Mode, the Alphanumeric display will read HD SDI or SD SDI. If your unit is not already in Demux Mode, press the MULTI pushbutton until the character display reads HD SDI or SD SDI.
11 Once the previous two steps are complete, press the MULTI button to access Dolby Mode. In Dolby Mode the Alphanumeric Display will read Dolby x, where x (1 8) refers to the location of the selected embedded Dolby signal within the SDI stream. In Dolby mode the Dolby signal is decoded and displayed on the Audio Level Meter according to table Audio Meter Number Dolby Audio Description 1,2 Decoded Audio 1,2 3,4 Decoded Audio 3,4 5,6 Decoded Audio 5,6 7,8 Decoded Audio 7, ,16 Lt, Rt Downmix Table Routing of Dolby Decoded Audio to Audio Level Meters Monitoring Dolby E and AC 3 Audio Surround Sound Monitoring On External Speakers The typical configuration settings for external speaker surround sound monitoring of a Dolby E or AC 3 signal are outlined in table Menu* Sub Menu Setting Note O/P Fix Spkr Off Mon 5.1 Dlby Yes Dn [Enbd / Dsbd] Enables / disables dialogue normalization.
12 AES Proc * Menus not listed in table do not affect the current mode Table Typical Configuration Settings for Monitoring Dolby E or AC 3 Surround Sound on External Speakers When monitoring Dolby E or AC 3 surround sound on external speakers, the option of also monitoring individual Dolby E decoded discrete audio pairs or the Lt / Rt downmix as a stereo pair on the left and right speaker (speakers connected to Analog1A and Analog1B) is available. Press the appropriate Monitor Select pushbutton to monitor a single audio pair on the left and right speaker. The centre, low frequency, left surround and right surround (analog outputs Analog2A, Analog2B, Analog3A and Analog3B) speakers are now muted. Note that AES outputs 2 and 3 are also muted. A single Audio Monitor Select pushbutton is illuminated when monitoring a single audio pair. To return to surround sound monitoring, press one of the first three Audio Monitor Select pushbuttons twice. Notice that the first three Monitor Select pushbuttons illuminate and the system returns to surround sound audio monitoring on the external speakers. Stereo Lt/Rt Downmix Monitoring On External Speakers The typical configuration settings for stereo monitoring of Dolby E or AC 3 decoded audio using external speakers are outlined in table Menu* O/P Spkr Mon Sub Menu Setting Note Fix Off St An1 Out8 Out8 set for monitoring the Lt/ Rt downmix. Out1, Out2 and Out3 set for monitoring individual Dolby decoded discrete audio pairs. Dlby Yes Dn [Dsbd / Enbd] Enables / disables dialogue normalization. AES Proc * Menus not listed in table do not affect the current mode Table Typical Configuration Settings for Stereo Monitoring of Dolby E or AC 3 on External Speakers
13 The option to monitor individual Dolby decoded discrete audio pairs, or the Lt/Rt downmix is available. Accomplish this by using the appropriate An1 (analog 1) menu setting described in Table Stereo Lt/Rt Downmix Monitoring On Internal Speakers The typical configuration settings for stereo monitoring of Dolby E or AC 3 decoded audio on internal speakers are outlined in table Menu* O/P Spkr Mon Dlby Sub Menu Setting Note Fix On St Yes Dn [Enbd / Dsbd ] Enables / disables dialogue normalization. AES Proc * Menus not listed in table do not affect the current mode Table Typical Configuration Menu Settings for Stereo Monitoring of Dolby E or AC 3 On Internal Speakers The option of switching between audio monitoring of the individual Dolby decoded discrete audio pairs, or the Lt/Rt downmix is available. Press the appropriate Audio Monitor Select pushbutton to do so. Refer to table for Dolby decoded audio and Lt/Rt locations on the Audio Level Meter Monitoring Dolby E Metadata Valid Metadata is available when decoding Dolby E audio only. Refer to sections and for further details. 3.2 Embedded AES Audio The AMS16 2 will demux AES audio embedded in the SDI video stream. The unit indicates that audio is present on a specified channel by illuminating the Audio Level Meters. When the ERR LED is illuminated, valid digital audio data is not present on the indicated Audio Level Meter location.
14 3.2.1 Demuxing Embedded AES Audio from the MD SDI Video Stream Before attempting to monitor AES audio ensure that: 1. A standard definition (SD), as per SMPTE 259M, or high definition (HD), as per SMPTE 292M or 3G SDI (3G) as per SMPTE 424M signal with embedded audio is connected to rear SDI Input 1 or Ensure that the SDI Input Select 1 or 2 pushbutton corresponding to the rear SDI Input 1 or 2 is selected. In Demux Mode, the character display reads HD SDI or SD SDI corresponding to the video format connected to the rear SDI Input of the AMS16 2. If your unit is not already in Demux Mode, press the MULTI pushbutton until the character display reads HD SDI or SD SDI. Demux mode allows the user to demux the embedded AES audio and displays it according to table on the Audio Level Meters. Audio Level Meter Number Audio Description 1,2 Embedded Audio 1,2 3,4 Embedded Audio 3,4 5,6 Embedded Audio 5,6 7,8 Embedded Audio 7,8 9,10 Embedded Audio 9,10 11,12 Embedded Audio 11,12 13,14 Embedded Audio 13,14 15,16 Embedded Audio 15, Monitoring Demuxed Audio Table Routing of Demuxed Audio to Audio Level Meters Stereo Monitoring On External Speakers The typical configuration settings for stereo monitoring on external speakers are outlined in table Menu* O/P Spkr Sub Menu Setting Fix Off Note
15 Mon An1 AES St Mon Dmx * Menus not listed in table do not affect the current mode Table Typical Configuration Settings for External Speaker Stereo Monitoring of Demuxed Audio Monitor the desired AES audio by pressing the appropriate Monitor Select pushbutton. Stereo Monitoring On Internal Speakers The typical configuration settings for stereo monitoring on internal speakers are outlined in table Menu* O/P Spkr Mon AES Sub Menu Setting Fix On St Dmx Note * Menus not listed in table do not affect the current mode Table Typical Configuration Settings for Internal Speaker Stereo Monitoring of Demuxed Audio Monitor the desired AES audio pair by pressing the appropriate Monitor Select pushbutton Summing Demuxed Audio Access Summing Mode by pressing the MULTI button until the character read out displays Summing. This mode allows for a summing of the selected AES audio pairs. The Monitor Select pushbuttons belonging to the summed audio, remains illuminated until they are de selected by pressing the illuminated pushbutton again. Note that raw Dolby E and Dolby AC 3 are ignored if selected to be summed, on the optional Dolby installed AMS16 2AEM model. The summed audio is routed to the two rear BNC MONITOR outputs and the configured Analog monitor outputs Monitoring Summed Audio Stereo Monitoring On External Speakers The typical configuration settings for stereo monitoring of summed audio on external speakers are outlined in table
16 Menu* Sub Menu Setting Note O/P Spkr Mon An1 Sum AES Fix Off St Mon Yes Proc * Menus not listed in table do not affect the current mode Table Configuration Settings for Stereo Monitoring of Summed Audio on External Speakers Stereo Monitoring On Internal Speaker The typical configuration settings for stereo monitoring of summed audio on internal speakers are outlined in table Menu* Sub Menu Setting Note O/P Spkr Mon Sum AES Fix On St Yes Proc * Menus not listed in table do not affect the current mode Table Configuration Settings for Stereo Monitoring of Summed Audio on Internal Speakers Creating Lt / Rt Downmix of Demuxed AES Audio Access Multi (Downmix) Mode by pressing the multi button until the character read out displays Multi. This mode allows the user to create a Lt/Rt downmix of the first three embedded AES audio pairs. Note that Dolby E or AC 3 cannot be present on the first three AES pairs for the Lt/Rt downmix to function. The Lt/Rt downmix is displayed on the 15 th and 16 th Audio Level Meter by setting A8 in the setup menu to Lt/Rt. The Lt/Rt mixing proportions are as follows: Lt = (1.0 * L) + (0.707 * C) B (0.707 * Ls) B (0.707 * Rs) Rt = (1.0 * R) + (0.707 * C) + (0.707 * Ls) + (0.707 * Rs)
17 3.2.6 Monitoring Lt / Rt Downmix of Embedded AES Audio In both external and internal speaker monitoring modes, the user can choose between monitoring the individual embedded audio pairs by pressing the appropriate Audio Monitor Select pushbutton or return to monitoring the Lt / Rt downmix by pressing Audio Monitor Select pushbutton eight. Stereo Monitoring On External Speakers The typical configuration settings for stereo monitoring of the Lt/Rt downmix on external speakers are outlined in table Menu* Sub Menu Setting Note O/P Spkr Mon An1 Mlti A8 AES Fix Off St Mon Yes LtRt Proc * Menus not listed in table do not affect the current mode Table Configuration Settings for Stereo Monitoring of Lt/Rt Downmix on External Speakers Stereo Monitoring On Internal Speaker The typical configuration settings for stereo monitoring of the Lt/Rt downmix on internal speakers are outlined in table Menu* Sub Menu Setting Note O/P Spkr Mon Mlti Fix On St Yes
18 A8 AES Lt/Rt Proc * Menus not listed in table do not affect the current mode Table Configuration Settings for Stereo Monitoring of Lt/Rt Downmix on Internal Speakers 3.3 Speaker Setup The external speaker setup for surround sound and stereo monitoring is illustrated in figures and Figure Speaker Setup for Surround Sound Monitoring of Dolby E or AC 3 On External Speakers
19 Figure Speaker Setup for Stereo Monitoring on External Speakers Chapter 4 Configuration Menu Settings This chapter provides instructions for accessing the configuration menu settings and details on each setting. 4.1 Accessing the Configuration Menu A few rudimentary set ups may be performed by the user. To place the AMS16 2 in Configuration Setup mode press and hold the volume control and the two input select buttons simultaneously. The character read out will now display the current firmware version in the unit eg. 2.x.x.x. Cycle through the menu options by pressing the volume control knob. Rotate the volume control knob to change sub menu settings relative to its menu option. Figure illustrates the menu and sub menu options via a menu flow diagram. Configuration settings are stored in the eeprom after one minute of inactivity and will be used as default settings on future power ups.
22 4.2 Menu Descriptions Firmware Version The first menu option displays the current firmware version. It is useful to know the firmware version installed in the unit when speaking to the factory about operational issues VOL: Power Up Volume The LCD display will display the characters VOL xx, where xx is a number that represents the volume that the unit will default to on power up. Change this sub menu setting by rotating the volume control counter clockwise for a lower level or clockwise for a higher level. This feature is particularly valuable in mobile applications where you do not wish all AMS16 2 units to power up at the last level set before power down O/P: AES1 8 Output Level Setup Setting O/P to Var (variable) allows the user to adjust the audio level of AES and Analog outputs located on the rear panel using the volume control knob. Setting O/P to Fix means that the front panel Volume control does not affect the level of these outputs Spkr: Internal Speaker On/Off This setting allows the user to turn on or off the internal speaker Cal: Reference Setup This sets the reference 0 mark of the LED bar graph meters below digital full scale. Settings include 20, 18, 16, 14, 12 and 10 dbfs Mon: Surround Sound Setup This setting is necessary for surround sound audio monitoring. Refer to section An1, An2, An3, An4: Analog Output Setup Setting of Out1, Out2, Out3, Out4, Out5, Out6, Out7 or Out8 routes embedded AES audio 1 8 respectively to the specified analog output. The setting of Mon sets the specified analog output as a monitor output. The analog monitor output is identical in behaviour to the BNC Monitor output Mlti: Multi Mode Setup Set Mlti to Yes (enabling Multi Mode) to produce a Lt/Rt downmix of the first three AES pairs. Refer to chapter three for full details.
23 4.2.9 Sum: Summing Mode Setup Set Sum to Yes to enable Summing mode. Refer to chapter three for full details Dlby: Dolby Mode Setup (on optional Dolby installed AMS16 2AEM model) Enabling Dolby mode, by setting Dlby to Yes, allows the user to decode the selected Dolby E or AC 3 signal. Refer to chapter three for full details Dn: Dialogue Normalization Setup Enabling dialogue normalization causes the AMS16 2AEM to normalize the Dolby audio level to a value read from the metadata. Dialogue Normalization only affects the AMS16 2AEM in Dolby Mode A8: AES Output 8 Setup The A8 menu setting affects Multi mode only. When A8 is set to LtRt, Audio Level Meter pair 8 and rear AES8 BNC will correspond to the Lt/Rt downmix of the first three AES pairs. When In8 is selected, the front meter pair 8 and rear AES8 BNC output will correspond to the eighth AES pair disembedded from the SDI stream AES: AES Pre and Post Process Setup Pre and post processing is set by setting AES to Dmx or Proc respectively. When AES is set to Dmx, the AES audio on AES outputs 1 to 8 are an identical copy of the disembedded audio from the SDI stream. When AES is set to Proc, AES Outputs 1 to 8 are the post processed AES signals disembedded from the SDI stream. Note that this setting does not affect the analog outputs Exit To exit the Co nfiguration Setup and return to normal operation, rotate the volume control knob.
24 Chapter 5 Technical Specifications This chapter provides technical details regarding the AMS16 2 such as the system block diagram, specifications for inputs / outputs and pin configurations. 5.1 System Block Diagram Figure System Block Diagram
25 5.2 Connections Analog Audio Connection (AUX1) The analog audio connector is a DB25 male connector. Table describes the analog output pin configuration. Pin Description Pin # Analog 1A + 1 Analog 1A 14 Analog 1B + 2 Analog 1B 15 Analog 2A + 3 Analog 2A 16 Analog 2B + 4 Analog 2B 17 Analog 3A + 5 Analog 3A 18 Analog 3B + 6 Analog 3B 19 Analog 4A + 11 Analog 4A 23 Analog 4B + 12 Analog 4B 24 Ground 25, 13, 8, 20, 7 Table Analog Audio Output Pin Configuration
26 5.2.2 Metadata Connection (only on optional Dolby installed AMS16 2AEM model) The Metadata connector is a nine pin DB9 M male connector. Refer to Table for the pin configuration. Pin Description Pin # TX A Asynchronous Data Out 8 TX B Asynchronous Data Out + 3 Ground 1, 4, 6, 9 Table Metadata Output Pin Configuration
27 5.3 Specifications Summary Analog Output Frequency Response 1.5 dbu change from 20Hz 20kHz Impedance 60 Ω balanced Max 0dBFS & 1kHz in 23.5 dbu Noise Less than 70dBU THD Less than 0.05% Type DB25 Male AES/EBU Outputs Impedance 75 Ω Unbalanced Level 2.5V p p terminated Max Output 0 dbfs Noise Less than 100 dbfs Standard AES3ID 1995 THD Less than 0.001% Type BNC Female Headset Jack Type Tip Ring Sleeve (TRS) Metadata Output (AMS16 2AEM only) Type DB9 Male Power AC Supply Average Consumption Max Consumption VAC, Hz 38.5 Watt 110 Watt SDI Input / Output (re clocked) Formats SD SDI , HD SDI 1920 x 1080: 60, 59.94, 50, 29.97, 24, Hz 1280 x 720: 60, Hz
28 Impedance Level Standards Type 75 Ω 0.8 V p p SD SDI as per SMPTE 259M HD SDI as per SMPTE 292M 3G SDI as per SMPTE 424M BNC Female Dimension (W x D x H) 17 7/16 x 12 5/8 x 3 1/2 44.3cm x 32.06cm x 8.89cm Rack Size 2U Weight 4.7 kg
29 WARRANTY All Ward Beck Systems Ltd. products are warranted against defective materials and workmanship for a period of one year from the date of shipment. Ward Beck Systems Ltd. will repair or replace, at its option and without charge, all said products or parts thereof which upon factory inspection prove to be defective during the warranty period, provided that: 1. The original serial numbers are intact and have not been tampered with. 2. The purchaser shall return any equipment or parts thereof to Ward Beck Systems Ltd. only after obtaining prior authorization and shipping instructions from the factory. (Ward Beck Systems Ltd. reserves the right to inspect or repair equipment on the purchaser s premises). 3. The purchaser assumes the obligation for all expenses in connection with the shipping and return of such goods, once authorization has been obtained. This warranty does not cover items normally considered expendable, such as fuses and lamps. This warranty does not cover damages caused by misuse, accident, neglect, unauthorized alteration, repair by unauthorized personnel, or damage caused by an act of God, war, or civil insurrection. In no event shall Ward Beck Systems Ltd. be liable for consequential damages. Ward Beck Systems Ltd. shall have the rights to final determination as to the application of this warranty. Ward Beck Systems Ltd. reserves the right, at any time and without notice, to make changes in its equipment, components, specifications or designs, as may be warranted by progress in state of the art technology. Ward Beck Systems Ltd. reserves the right to make design changes, additions to, and improvements in its products, without obligation to install such revisions in products previously manufactured. The warranty set forth herein is in lieu of all other warranties expressed or implied, including the warranties of merchantability and fitness. WARD BECK SYSTEMS LTD. 945 Middlefield Road, Unit 9, Toronto, Ontario M1V 5E1 V F Toll Free Website: beck.com E Mail: beck.com
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