1. Manuals
  2. Brands
  3. Qualis Audio Manuals
  4. Monitor
  5. Sentine
  6. User manual

Qualis Audio Sentine User Manual

Surround sound audio monitor
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Sentinel
surround sound audio monitor
User Manual
Version 2.0
May, 2011

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Sentine and is the answer not in the manual?

Questions and answers

Summary of Contents for Qualis Audio Sentine

  • Page 1 Sentinel surround sound audio monitor User Manual Version 2.0 May, 2011...

  • Page 3: User Manual

    User Manual Version 2.0 May, 2011 Qualis Audio, Inc. Lake Oswego, Oregon...
  • Page 4 Copyright © 2011 Qualis Audio, Inc. Qualis Audio, Inc. All rights reserved. PO Box 731 Lake Oswego, OR 97034 Dual Stream is a trademark of Qualis +1 503 635-9376 voice Audio, Inc. +1 503 635-3851 fax www.qualisaudio.com support@qualisaudio.com SEN-IUM 110531...

  • Page 5: Table Of Contents

    Contents Chapter 1 Overview 1 Chapter 2 Installation 5 Getting organized 6 Mounting and operating environment 7 Power connection and grounding 7 Network connection 8 User interface configuration and use 8 AES digital audio connection 9 SDI digital audio connection 11 Analog audio connection 12 Auxiliary signals connection 14 Date &...
  • Page 6 Levels & Metering settings panel 62 Loudness Settings panel 64 Channel Analysis settings panel 67 Downmix Compatibility settings panel 68 DC Inputs & Temperature settings panel 70 Alarms settings panel 71 Alarm Actions settings panel 72 Date & Time settings panel 73 Chapter 6 Log Repository 75 Log repository setup in the user interface 77...

  • Page 7: Overview

    Overview...
  • Page 8 The Sentinel allows significant reduc- tions in operating costs while improving the quality of delivered audio. Features The Qualis Audio Sentinel monitors a surround program, up to 8 chan- nels. Measurements include: Individual surround channel signal levels with user selectable ballis-...
  • Page 9 to interface signal parameters to audio signal characteristics across surround channels to metadata carried within coded audio The Sentinel also provides other measurement functions including: Six DC inputs for monitoring external parameters (line voltage, secu- rity sensors, transmitter power, etc.) Internal clock / calendar for time &...

  • Page 11: Installation

    Installation Getting organized 6 Mounting and operating environment 7 Power connection and grounding 7 Network connection 8 User interface configuration and use 8 AES digital audio connection 9 SDI digital audio connection 11 Analog audio connection 12 Auxiliary signals connection 14 Date &...

  • Page 12: Getting Organized

    To install the Qualis Audio Sentinel, you mount it where it will be used, connect it to power, network, audio source and auxiliary signals, and configure it for operation. For a basic installation, you can typically make the connections using standard cabling, and you can configure the Sentinel through its user interface on your browser.

  • Page 13: Mounting And Operating Environment

    Auxiliary signals. Linear Time Code input, loudness controls, alarm outputs and DC inputs are grouped together on a single connection. To gain access to any of these, you will need to fabricate a custom connector. Log repository. The Sentinel downloads its measurement data to a log repository.

  • Page 14: Network Connection

    Network connection The Sentinel provides a 10BASE-T Ethernet network interface through an RJ45 connector on the rear panel. By default, the Sentinel determines its TCP/IP network settings using the Dynamic Host Configuration Protocol (DHCP). This requires a DHCP server on your network to supply the settings. Alternatively, you can configure static network settings through the net- work setup section of the Front Panel menus (p. 19).

  • Page 15: Aes Digital Audio Connection

    cators on the status bar (p. 34) can also help you diagnose user interface problems. The Sentinel user interface performs substantial processing in the browser. Browser performance is continually improving, and you will find the interface is most responsive with the latest browser versions. Similar considerations apply to your choice of workstation or laptop –...
  • Page 16 Unbalanced inputs use standard VGA monitor cables. Balanced operation is selected by shorting a pin on the connector to ground. Qualis Audio provides an optional HD15 to XLR cable for this configuration. Specifications for fabricating custom cabling are provided in AES digi- tal audio connections (p. 84).

  • Page 17: Sdi Digital Audio Connection

    The AES audio input/output connection has identical characteristics to the AES input connection, except for the addition of the coded audio output. Specifications for fabricating custom cabling are provided in AES digital audio connections (p. 84). Input-to-channel assignment You assign digital input connections to internal Sentinel channels through the user interface.

  • Page 18: Analog Audio Connection

    The SDI input and reclocked output both use high performance BNC connectors. Particularly when monitoring HD-SDI signals it is essential to use high quality 75 Ω BNC cables. AES In/Out connection The AES in/out connector on the SDI audio module functions identically to the AES in/out connector on the AES audio module.
  • Page 19 ical source impedance imbalance. A common mode filter is used to improve RF immunity. The high input impedance of the Sentinel makes unconnected inputs sensitive to noise and AC fields. These can cause low-level bargraph activity. Unused inputs should be shorted or resistively terminated with a low value.

  • Page 20: Auxiliary Signals Connection

    Analog levels configuration The maximum input level is software selectable between +28 and +22 dBu by using the Max Analog In field of the Levels & Metering set- tings panel (p. 62). The lower maximum level setting provides a cor- respondingly lower noise floor and maintains dynamic range in installa- tions with lower operating levels.

  • Page 21: Date & Time Configuration

    DC input threshholds configuration Error threshholds can be set for the DC inputs in the DC Inputs & Tem- perature settings panel (p. 70). Date & time configuration The Sentinel uses a real-time clock to accurately record the timing of measurements in Coordinated Universal Time (UTC). For it to be able to store measurement data for later retrieval, it is essential that the clock be set accurately.
  • Page 22 In a production environment, where the Sentinel is in operation continu- ously, you will also need to set up scheduled downloading, so you are not depending on the user interface to keep the repository up to date. In the user interface, configuration options for defining the log repos- itory and scheduling downloads are located in the pulldown menu on the readings navigation panel (at the left of the readings page).

  • Page 23: Front Panel

    Front Panel Front panel displays and controls 18 Front Panel menus 19...

  • Page 24: Front Panel Displays And Controls

    The Qualis Audio Sentinel is intended to be controlled over a network connection from a standard Javascript enabled browser. However, some of the settings are only accessible from the front panel, princi- pally those relating to network operation. All settings affecting instru- ment operation, alarming and reporting are stored in non-volatile RAM to ensure proper operation after power failure.

  • Page 25: Front Panel Menus

    Front Panel menus Date & time setup These menu items set the Sentinel’s real-time clock, the date and time formats for the front panel display, timezone, and daylight savings time. The Sentinel does not automatically switch to or from daylight savings. As an alternative to setting the date and time manually, the Sentinel can also be synchronized to a Network Time Protocol (NTP) server.
  • Page 26 tings panel (p. 73). This setup panel also lets you set the date and time formats, timezone, and daylight savings time. Network setup These menu items let you allow the Sentinel to determine its TCP/IP net- work settings automatically using DHCP services, or to configure it with static settings.
  • Page 27 There are separate listings for the two digital input module ROM slots, M1 and M2. Only occupied slots are listed. LCD contrast setup Adjusts the LCD contrast on the front panel. Use the knob to scroll through values. Front Panel...

  • Page 29: Chapter 4 Readings

    Readings page Meters panel 25 Bargraph meters 26 Balance display 30 Spectrum and downmix compatibility displays 31 Status bar 34 Loudness meter panel 34 Hardware loudness gating control 39 Loudness gating control buttons 39 Readings Timeline panel 40 Timeline 40 Timeline scroll bar 43 Transport control buttons 43 Segment table 45...
  • Page 30 On the left of the Readings page is a navigation panel that lets you select which measurement panels are visible. It also lets you switch to the Settings page (p. 59). Initially, only the main metering panel will be visible. The panels you’ve selected for display are tracked from one session to the next, as are settings made through the configuration menus asso- ciated with the readings panels.

  • Page 31: Meters Panel

    Signal Histogram panel (p. 47) Summary graphical display of selected ranges from recorded readings. Settings page (p. 59) Panels for configuring Sentinel mea- surements and error reporting. Meters panel 1. Input channel bargraph meters. True peak indi- cator, level bar and bandwidth bar for each input channel.

  • Page 32: Bargraph Meters

    Bargraph meters 1. Meter axis. Meter units at top, meter type at bot- tom. 2. True peak. Indicator bar and numeric value. 3. Level bar. 4. Channel. 5. Bandwidth bar. The Meters panel includes two groups of vertical bargraphs, one for the input channels (on the left) and one for a set of downmixes created by the Sentinel (on the right).
  • Page 33 sums Lo and Ro. The gain coefficients applied to the center, front, surround and back channels when summing into the Lo and Ro downmix are selectable. They are set in the Downmix Compatibility settings panel (p. 68). These downmix gains are also used when performing the Compatibility measurements.
  • Page 34 Warning Messages A red vertically-written error message appears over the bargraph if certain errors are detected in that channel. They are not displayed for downmix channels. When multiple errors are present, the highest prior- ity error is displayed. The possible errors, from highest to lowest priority, are: PARITY (digital input only) BIPHASE (digital input only)
  • Page 35 True peak readings which reach the user defined clip level will produce a CLIP indication on the bar meter of the corresponding input channel. The configuration pulldown menu for the Meters panel allows you to set the Peak Hold Time from 1 to 30 seconds. Bandwidth indicators The input channel bargraphs have a graphic below the channel label which gives an approximate indication of signal bandwidth.

  • Page 36: Balance Display

    Balance display The balance display is a plan view of the listen- ing space with listener at center surrounded by loudspeakers; the LFE channel is an additional loudspeaker to the right. left: 7.1 format, middle: 6.1 or 6.1+2, right: 5.1 or 5.1+2 Ancillary channels are not included.

  • Page 37: Spectrum And Downmix Compatibility Displays

    Spectrum and downmix compatibility displays 1. Spectrum display. Shows the spectrum of the mono downmix channel in octave bands. 2. Downmix compatibility display. Shows stereo and monaural downmix compatibility (power loss compared to original) in octave bands. 3. LFE compatibility dis- play.
  • Page 38 used for a specific downmix are summed and compared to a downmix channel measurement. The loss in each octave is displayed in a manner similar to a frequency response graph where the “rolloff” represents the signal loss at each octave band. There are separate indicators for left and right stereo channels and monaural: Monaural downmix loss.
  • Page 39 heard by stereo or mono listeners. The result is a direct assessment of the change in the program experienced by these listeners. The internal Downmix channels are created from the input signals as follows: Sums LF, CF, LS and LB (or CB in 6.1 mode), if present. Sums RF, CF, RS and RB (or CB in 6.1 mode), if present.

  • Page 40: Loudness Meter Panel

    Status bar The status bar displays health and activity status indicators, Sentinel identifi- cation, current time. 1. Network status icon. 4. Real-time clock date, 2. Log repository status time, timezone and sta- icon. tus icon. 3. Serial number. 5. Linear time code and status icon.
  • Page 41 The loudness meter panel is organized around a pair of meter bars: continuously updated measurements (continuous readings) on the left, those computed across a specific time segment of the audio signal (integrated readings) on the right. The measurement gating for the integrated readings may be controlled by hardware signals applied to the rear panel auxiliary signals con- nector or by software control through the buttons at the bottom of the loudness meter panel.
  • Page 42 level, an indicator (a little dot) for a maximum loudness level, and a pane that shows the loudness range. The background of the bar shows the loudness error range, as config- ured in the Loudness settings panel (p. 64). The numeric accumu- lated loudness value is displayed above the bar.
  • Page 43 Dual Stream™ loudness measurement is Qualis Audio’s patent pend- ing solution to this problem. The Sentinel is designed to handle a pro- gram stream with interleaved commercial segments. When the instru- ment is told that the program being monitored has gone to commercial it pauses the program measurement.
  • Page 44 Configuration Meter Scale sets the scale used to display the loudness measurement bargraphs, and selects between relative and absolute display units. The bargraph scale may be set to either of the EBU required ranges of 27 or 54 LU, or a 75 LU range. The larger ranges allow monitoring of wider dynamic range material at the expense of display resolution.

  • Page 45: Hardware Loudness Gating Control

    Hardware loudness gating control In the Dual Stream measurement mode there are still just two control signals: one to select the measurement context (called P/C), and one to reset the meter (called RESET). The same control line is used for RUN/ PAUSE and for P/C, its function changes with the mode.

  • Page 46: Readings Timeline Panel

    Restart button Restarts loudness measurement. Readings Timeline panel 1. Readings timeline. Loud- ness, program/commer- cial, error/alarm traces shown. 2. Programming segment table. 3. Timeline scroll bar. 4. Play/Pause button. 5. Skip backward button. 6. Skip forward button. The Readings Timeline panel is a summary display of the history of readings from the Sentinel, from the latest readings back through the stored log data.
  • Page 47 Signal traces The timeline displays your choice of Program Loudness and Maximum Downmix measurement traces. The loudness trace displays short-term loudness. The downmix trace displays the maximum of left and right downmix values within the frequency range configured in the Downmix Compatibility settings panel (p. 68).
  • Page 48 The readings at the current position are displayed on the meters and secondary readings panels. When displaying live data, these are cur- rent readings as they are received from the Sentinel; at other positions in the timeline, saved readings are displayed. When dragging the cur- rent position, the readings update as the cursor moves.

  • Page 49: Timeline Scroll Bar

    Configuration Timeline Traces selects the data traces displayed on the timeline. It allows a choice of Program Loudness and Maximum Downmix mea- surement traces. Playback Speed selects rate at which readings are displayed during playback. Timeline Scale lets you view the timeline at varying levels of detail – from 1:1, where each mark on the timeline represents a single reading, to 1:16, where each mark combines 16 readings.
  • Page 50 Play/Pause button If paused, starts play; if playing live or logged readings, pauses play. Button appearance alternates between play and pause graphics.If play is started within a defined programming segment, it begins at the beginning of the segment. Skip backward button Moves current position to closest pre- ceding beginning segment bound.

  • Page 51: Segment Table

    Segment table A segment is an interval of time within the Sentinel’s readings history. Mea- sured segments are cre- ated in real time by the Sentinel; defined segments are created retrospectively through the user interface. The segment table displays 1. Selected defined seg- 4.
  • Page 52 Defined segments You create defined segments through the user interface. Loudness measurements for defined segments are calculated within the user interface from saved log data and are recalculated when the segment’s bounds change, so they update in real time. Each has a corresponding pair of bounds cursors displayed on the readings timeline.

  • Page 53: Signal Histogram Panel

    Signal Histogram panel 1. Y axis. Units are percent- ages. 2. X axis. Units are full- scale loudness. 3. Histogram traces. 4. Segment key. The Signal Histogram panel summarizes loudness measurements for programming segments selected using the Readings Timeline panel (p. 40).

  • Page 54: Errors Panel

    Errors panel The Errors panel provides a concise view of all potential errors mea- sured by the Sentinel. Unlike the warnings overlaid on the bargraphs, there is no prioritization applied to the error summary. These are the icons used to indicate error conditions: No active error.
  • Page 55 Interchannel Errors The Interchannel Errors section displays errors which involve multiple channels. These errors and their sources are: Loudness Errors are displayed for short-term and integrated loudness measurements. The short-term loudness error is asserted when the short-term loudness differs from the loudness target by a specified tol- erance and duration as set in the Loudness settings panel (p. 64).
  • Page 56 Digital Errors The Digital Errors section displays errors involving the digital input channels and digital metadata. Digital In Columns 1-4 show the receiver lock status for each of the four 2-channel PCM inputs. Column 5 shows the receiver lock status for coded audio.

  • Page 57: Digital Interface Panel

    are not subject to the Hold Time setting. Their state is directly reflected in the indicators. Configuration Error Hold Time sets the time for which the panel indicators display a recent error. This setting only affects errors displayed on this panel, not on other panels or the bargraphs.
  • Page 58 Input Format Discrete AES, coded AES, or an SDI format. For SDI, the video format is also indicated. Interface Rate Sample rate of each audio channel carried in the inter- face; for SDI input, includes synchronous or asynchronous indi- cation. Active Length Measured word width for each audio channel carried in the interface.
  • Page 59 1 Channel 2Fs Streams are interleaved samples of a single channel at double the interface frame rate L Channel 2Fs Streams are interleaved samples of left channel content at double the interface frame rate R Channel 2Fs Streams are interleaved samples of right channel content at double the interface frame rate Multi Channel Streams are part of a multichannel (more than two) signal...

  • Page 60: Dolby Metadata Panel

    Signal is not DARS Grade 1 ± 1 ppm accuracy reference re AES-11 Grade 2 ± 50 ppm accuracy reference re AES-11 Reserved Metadata is set to an undefined bit pattern Hidden Data Indicates whether LSB of the audio contains hidden infor- mation as specified in AES-55: Present or Not Indicated.
  • Page 61 E 20-bit Dolby E encoded, data packed in the 20 most signifi- cant bits of both channels E 16-bit Dolby E encoded, data packed in the 16 most signifi- cant bits of both channels Not Dolby encoded; PCM or other coding Rate Bit rate of data in Dolby packets.
  • Page 62 mono stereo LF, RF LF, CF, RF LF, RF, Surround LCRS LF, CF, RF, Surround LRLsRs LF, RF, LS, RS LCRLsRs LF, CF, RF, LS, RS (all standard surround channels) Indicates whether low bandwidth channel devoted to low fre- quency effects is present within the bitstream. Errors Number of received coded audio packets containing errors.
  • Page 63 Filters, Pre-emphasis, Attenuation Overmod Protect Indicates whether encoder used pre-emphasis when calculating compression values used in RF mode. Indicates whether encoder applied a DC-blocking filter. Surround Level Surround channel attenuation (0 or 3 dB). Phase Phase shift to apply to surround channels when converting to Dolby Digital (0 or 90°).

  • Page 64: Dc Inputs & Temperature Panel

    DC Inputs & Temperature panel The DC Inputs & Temperature panel displays readings from the Sentinel’s six auxiliary voltage inputs. These inputs are updated approx- imately 3 times per second so a transient whose duration is less than 330 ms may be missed. This panel also includes a reading of the Sentinel internal temperature in degrees Centigrade.

  • Page 65: Chapter 5 Settings

    Settings page Input & Sources settings panel 61 Levels & Metering settings panel 62 Loudness Settings panel 64 Channel Analysis settings panel 67 Downmix Compatibility settings panel 68 DC Inputs & Temperature settings panel 70 Alarms settings panel 71 Alarm Actions settings panel 72 Date &...
  • Page 66 On the left of the Settings page is a navigation panel that lets you select which settings panels are visible. It also lets you make changes to the settings and save them, and switch to the Chapter 4, Readings page (p. 23). Modify/Save settings Unlocks the settings panels so settings can be modified.

  • Page 67: Input & Sources Settings Panel

    Alarm Actions settings panel (p. 72) Selects notification actions for each alarm. Includes setup of email server. Date & Time settings panel (p. 73) Configures network time service and time zone. Input & Sources settings panel The Input & Sources settings panel selects the program format and channel mapping.

  • Page 68: Levels & Metering Settings Panel

    ble, though not advised, to assign the same numeric channel to more than one surround channel. Levels & Metering settings panel The Levels & Metering panel selects the metering ballistics and signal levels used in metering and error detection. Meter Setting Meter Type Selects the ballistics used for the bargraphs and for detec- tion of OVERs in the program.
  • Page 69 0 dBFS. This setting has no effect on a digital input Clip level indication (always 0 dBFS). Overload Ref. Sets the reference source for the Overload indication. User Selected Allows you to set the Overload Level. (The two proprietary meter types always use this setting.) Meter Default Follows the Meter Type setting.

  • Page 70: Loudness Settings Panel

    (~−8 dBu). Common digital settings are −20 dBFS (SMPTE RP200(2002)) or −18 dBFS (EBU R68-2000). Loudness Settings panel The Loudness settings panel controls the loudness measurement func- tions of the Sentinel. It controls the measurement method and the error testing parameters. It also sets the Under Level Error thresholds and durations.
  • Page 71 Integrated loudness control Controls Selects the source of loudness meter control and restart inputs. Choices are hardware inputs on the rear panel auxiliary signals connector, and buttons on the Loudness meter panel (p. 34). Measure program Sets the polarity of the rear panel loudness meter control input.
  • Page 72 Under-Level Error If A Front Channel is Below Sets the minimum front channel loudness allowed before issuing an under-level error. The value may be set between −40 and −85 dB in 3 dB steps. For Longer Than Sets the duration that the front channel loudness must be below the specified minimum to generate an under-level error.

  • Page 73: Channel Analysis Settings Panel

    Channel Analysis settings panel The Channel Analysis settings panel sets the thresholds used for hum detection, channel swap detection and LFE bandwidth checking. It controls all channel related measurements that are not level or loudness related. Hum Error if Stable Tones at Sets the frequencies used for hum detection measure- ments.

  • Page 74: Downmix Compatibility Settings Panel

    CF and LFE Swapped If LFE Bandwidth > CF Bandwidth For Longer Than Sets duration that the LFE bandwidth must exceed the CF bandwidth to generate a CF/LFE Swap error. The choices are 1, 3, 10 or 30 seconds. Digital Input Has No Signal If Values Repeat For More Than Sets the number of samples in a row that must have the same value to generate an error.
  • Page 75 Downmixed Signals In Error If Within Each Octave Controls the way 1/30th octave bins are combined and compared to the level threshold. Peak uses the worst case signal loss for any bin. Average uses the average loss within each octave. Level Changes By Sets the error threshold for changes in the program when downmixed.

  • Page 76: Dc Inputs & Temperature Settings Panel

    DC Inputs & Temperature settings panel The DC Inputs & Temperature settings panel sets the limit thresholds for the 6 DC inputs and the internal temperature sensor. These have no duration setting – if a threshold is crossed, an error is immediately asserted.

  • Page 77: Alarms Settings Panel

    Alarms settings panel Alarms are the result of one or more error conditions. Four alarms are available, numbered 1-4, and each may have any combination of errors assigned to it. When an error occurs, it triggers any alarms to which it is assigned.

  • Page 78: Alarm Actions Settings Panel

    Other Errors DC Input n Enables reporting of DC Input n being out of bounds. Temperature Enables reporting of temperature errors. Alarm Actions settings panel When an alarm occurs the Sentinel will assert an open-collector output on the rear panel auxiliary signals connector and will display a warn- ing on its front panel.

  • Page 79: Date & Time Settings Panel

    corresponding Enable box. This button is disabled while modi- fying settings. Device name The device name is used in alarm email messages to identify the Sentinel from which the alarm originated. Limited to 16 characters. Manually Assert Outputs Forces the auxiliary alarm outputs to a low state (useful for testing connections).

  • Page 81: Log Repository

    Log Repository Log repository setup in the user interface 77 Purging and archiving repository data 78 Scheduled downloading of log data 78...
  • Page 82 The Sentinel logs internally up to 25 hours of readings data. The data includes all audio characteristics sampled by the Sentinel and all mea- surements. To save space, logged data is saved at approximately 1.4 second intervals (a 4-to-1 merging of the original readings data). To access and preserve this data, you need to download it from the Sentinel to a storage repository.

  • Page 83: Log Repository Setup In The User Interface

    Log repository setup in the user interface To allow access to logged data, you need to configure the Sentinel web interface with the location of the log repository. Normally, you will also configure the web interface to download data from the Sentinel to the log repository, so that all logged data is available for display.

  • Page 84: Purging And Archiving Repository Data

    Purging and archiving repository data Each daily log file in the repository holds about 13 MB of data; a month of data is about 400 MB. The strategy for purging or archiving these files is your choice – the Sentinel software doesn’t delete log files, and it provides access to whatever files are in the repository.
  • Page 85 The backslash (\) between the directory-path and serial-number is the system-specific directory path separator. On Unix-based systems (including Mac OS X), you use a forward slash (/) instead. For example: javaws -wait -Xnosplash http://209.180.174.206/logrepository.jnlp \ -open "C:\Sentinel Logs\207745" Download schedules The Sentinel stores up to 25 hours of log data internally, so a daily download will preserve all logged data.
  • Page 86 Scheduled download on Windows 7 systems To perform scheduled downloads on a Windows 7 system, you create a .bat file containing the download command as described above, then create scheduled task that runs the .bat file. You can place the .bat file wherever is convenient. The log repository directory is a reasonable choice.
  • Page 87 An asterisk (*), indicating any, may be specified for any of the time fields. For example: 30 0-23 * * * ~/Sentinel\ Logs/download.sh You install the crontab task using: crontab crontab-file Log Repository...

  • Page 89: Connections And Cabling

    Connections and cabling AES digital audio connections 84 Analog audio connections 85 Auxiliary connections 86 Breakout adapter 87...

  • Page 90: Aes Digital Audio Connections

    The Sentinel’s audio and auxiliary signals connectors are designed to work with standard cables for typical configurations. The following specifications and guidance are provided for those cases where cus- tom cabling is necessary. AES digital audio connections AES connections appear 1.

  • Page 91: Analog Audio Connections

    12. Channel 1, low 25. Channel 1 ground 13. Reserved Qualis Audio offers a Breakout Adapter (p. 87) which converts the 25 pin connector to 24 screw terminals suitable for attaching plenum cable or other fixed installation applications. When using the breakout adapter with balanced inputs, connect the individual cable shields to the low terminals and the center conductors to the corresponding high terminals.

  • Page 92: Auxiliary Connections

    12. Linear Time Code low 25. Ground 13. +3.3V, 50mA limited Qualis Audio offers a Breakout Adapter (p. 87) which converts the 25 pin connector to 24 screw terminals. This provides a convenient way of connecting auxiliary signals. The LTC input is a differential input that may be wired for either bal- anced or unbalanced operation.

  • Page 93: Breakout Adapter

    3. Screw terminals, pins 14-25 (1-12 on back). 4. Strain-relief holes. The Qualis Audio screw terminal breakout adapter avoids the soldering normally involved with making DB25 connections. It routes all pins to screw terminals and provides a pair of pull-up resister networks.

  • Page 95: Firmware Updates

    Firmware updates...
  • Page 96 The Sentinel is designed to allow firmware updates over the network from a web browser. The process is as follows. Obtain the updates The latest updates can be obtained from the Qualis Audio web site (www.qualisaudio.com). The site also provides an archive of older firmware revisions.
  • Page 97 http://address/fwupdate Replace the address with actual address of the Sentinel you’re updat- ing. The Sentinel will display a pop-up menu that prompts you for a User Name and Password: Leave the User Name blank; the default password is audio. Once you are authenticated, the Sentinel will display the Firmware Update page.
  • Page 98 If the update fails due to a corrupted firmware image, the Sentinel will display a Firmware Update File Invalid message. If you see this mes- sage, you’ll need to get a new copy of the image file. Restart your browser and clear its cache If you’ve updated the SentinelWeb firmware, you’ll need to quit and restart your browser, and clear the browser’s cache when you restart it.

  • Page 99: Appendix A Specifications

    Specifications Analysis Surround Format 5.1, 5.1+2, 6.1, 6.1+1, 7.1 Metering VU, Nordic PPM, BBC PPM, EBU PPM, DIN PPM, proprietary 85 dB Standards range meters, 12 updates/second Peak Amplitude True peak responding with 4x interpolation, 340 ms update rate Downmix Computes energy lost during downmixing to both stereo and mono Compatibility formats.
  • Page 100 Metadata Analyzes status bit metadata Detects metadata inconsistency Other analysis DC Inputs Compare to independent min & max values Temperature Compare to min & max temperature Analog input Connection 8 channels on 25 pin female D-sub Format Balanced or Unbalanced Input Impedance 1 MΩ, each side to ground Maximum Input...

  • Page 101: Appendix B Warranty

    Warranty Qualis Audio warrants its instruments to be free from defects in mate- rials and workmanship for a period of three (3) years from the date of shipment. During the warranty period, we will, at our option, either repair or replace any product that proves to be defective.

  • Page 103: Appendix C Safety Information

    Safety information Use this product only as described in this manual. Any other use or application may damage the instrument, void the warranty or pose a safety risk to personnel. This product is intended for indoor use in a non-condensing environ- ment.
  • Page 105 Index date & time settings panel, lcd contrast, 21 dc inputs & temperature alarm actions settings levels & metering settings panel, 58 panel, 72 panel, 62 dc inputs & temperatures alarms settings panel, 71 Linear Time Code, 14, 34 settings panel, 70 audio connection log repository, 15, 34, device name, 20...
  • Page 106 segment table, 45 serial number, 34 settings page, 60-73 signal histogram panel, 47 specifications, 93-94 spectrum display, 31 status bar, 34 system requirements, 8 time (see clock, real-time) true peak meters, 28 warranty, 95-95 User Manual...
  • Page 108 Qualis Audio, Inc. Lake Oswego, Oregon We’re Listening...

Table of Contents