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MRC EQ Limit User Manual

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Limit
®
USER´S MANUAL
Version 2.19 january 2019
www.mrcaudio.com

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Summary of Contents for MRC EQ Limit

  • Page 1 Limit ® USER´S MANUAL Version 2.19 january 2019 www.mrcaudio.com...

  • Page 2: Security Advice

    TO REDUCE THE RISK OF FIRE REPLACE THE MAINS FUSE ONLY WITH A FUSE THAT CONFORMS TO IEC127-2. 250 VOLTS WORKING, TIME DELAY TYPE AND BODY SIZE OF 20mm x 5mm. THE MAINS INPUT FUSE MUST BE RATED AT 230V=T 3,15AL and 115V=T 6,3AL. MRC AUDIO EQLimit...

  • Page 3: Table Of Contents

    35 - 36 - 37 - 38 - 39 - 40 Graphs 40 - 41 7.10 Preferences 42 - 43 - 44 Technical characteristics Warranty Remote Display DD-1 Remote Display DD-3 48 - 49 - 50 Certification 51 - 52 - 53 MRC AUDIO EQLimit...

  • Page 4: Introduction

    INTRODUCTION Thank you for using the Limiter-Controller MRC AUDIO EQLimit, the most complete system for controlling the sound emission in public leisure establishments. This equipment adjusts the sound emission in a musical system, acting softly on the audio signal what warranties that the...
  • Page 5 It also has physical protections with sealing screws at the connections back plane and for the microphone’s cover. As a complement for its installation and configuration, the limiter has an internal pink noise generator. All these elements are shown in the block diagram in fig.1 MRC AUDIO EQLimit...
  • Page 6 LEFT LEFT LINE INPUT LINE OUT RIGHT LINE RIGHT LINE INPUT. FILTER “C” “A” FILTER MIC 1 “C” “A” “BASS” DISPLAY FILTER MIC 2 COMMS BANDS FILTERS FIG 1 MRC AUDIO EQLimit...

  • Page 7: Description

    14. AUX – Level control for the external fire evacuation message. 15. XLR IN – Input balanced connectors for channels left and right. 16. MIC1 - 2 – Input balanced connectors for main microphone 1 and optional registering microphone 2. MRC AUDIO EQLimit...
  • Page 8 NOISE MUTE GAIN REDUCTION PEAK SERIAL NO AUX OUTPUT PUSH PUSH PUSH E172301 PUSH PUSH DC OUT FUSE DISPLAY RS 232 FOR SAFETY OPERATION, PLEASE, LEVEL REFER TO USER´S MANUAL MIC 2 MIC 1 Fig . 2 MRC AUDIO EQLimit...

  • Page 9: Installation

    This unit has been carefully packed at the factory inside a specially designed case. Nevertheless, we recommend you supervise the state of the box and its contents. Please do keep all the packaging items in case the unit should go back to MRC Audio. MRC AUDIO...

  • Page 10: 5.1.- Connections

     Test for correct sound. If the remote display is installed verify that the metering varies according to the sound level in the house. If display Und (35dB or less) maybe the cable is connected in wrong way and sounds mute. MRC AUDIO EQLimit...

  • Page 11: 5.2.- Scl Software Installation

    Always open this program as administrator Before attempting to adjust the limiter, you must request to MRC Audio (info@mrcaudio.com) an installer’s license and register this license in the User Data window. Fill up all user data and register your license. When activated, check the “Remember in this PC” tick.

  • Page 12: 5.4 Master Password

    5.4 Master Password If the user forgets the password to configure the limiter, MRC Audio can provide a master password valid for only that limiter, as a function of its serial number, and valid only once. Introducing a master password is registered in the limiter’s non-volatile memory as an event, together with the date and time as all other events, and together with the authorised user that has entered the master password.
  • Page 13 Clicking on this icon, created on the desktop at software installation time, the initial window appears where you can choose the user´s language through its corresponding flag. Once clicked on the language flag, the rest of buttons change to the language chosen. MRC AUDIO EQLimit...

  • Page 14: User's Data

    In the User field, fill in exactly the user name provided by the manufacturer. This name will identify you when accessing any EQLimit. In the License field type in the license number provided by MRC Audio; this field is case sensitive.

  • Page 15: Installations

    Click on the button to go back to the initial state without deleting anything. NOTE: on top of the numbered left-hand buttons there is a button with an asterisk; clicking on this button alternatively selects/deselects all installations. MRC AUDIO EQLimit...

  • Page 16: User´s Manual

    Clicking on this button an emerging window appears inviting to create or to restore a database: Click on any of both, an OS window appears to select the name and location of the file to create or to find the file to restore. MRC AUDIO EQLimit...

  • Page 17: Programming

    PC. If the action fails for any reason, the limiter will have to go back to the manufacturer in order to burn the entire firmware into the limiter’s microprocessor. MRC AUDIO EQLimit...
  • Page 18 Clicking on the Edit Limiter button the configuration window appears. It is a group of sub windows each headed by a tab. The application header constantly shows the serial number of the equipment, the installed firmware version, date, time and expiration date of the license. MRC AUDIO EQLimit...

  • Page 19: Installation File

    Five days before expiring, the illuminated logo of MRC Audio flashes with intensity to warn of the end of the reservation period. When the date arrives, it will flash every second and interrupt the sound. Only the installer will be able to restore the device to normal operation.

  • Page 20: Limiter Adjust 20

    LIMITER ADJUST The MRC Audio EQLimit limiter is factory adjusted for its immediate use, with the microphone 1 signal as the controlling signal for limitation and with its standard parameters. Only the maximum sound level needs to be adjusted. If we need to change any of the default parameters, we can do so in the Limiter Adjust window: Sessions –...
  • Page 21 Adjust button. Special Periods – The EQLimit limiter has the capacity to configure up to 10 special periods in which the maximum permitted level and timetable can be different to the normal settings. MRC AUDIO EQLimit...
  • Page 22 The period is active and sound levels and alarms will be registered in the events memory. This functionality is very useful also to add different time frames to each day within the specified time period. MRC AUDIO EQLimit...

  • Page 23: Levels And Timetable 23

    It is also possible to combine these 3 timeslots with the programming of special periods to achieve the desired level variation throughout the day in a selected period of days. MRC AUDIO EQLimit...
  • Page 24 It is possible to type in one single day and copy that input to the rest of the days of the week or to the days of the week you choose. This is done by means of the day tick boxes and the Copy to: green button. MRC AUDIO EQLimit...

  • Page 25: Aux Levels And Timetable

    Beyond v2.19, it is possible to incorporate an auxiliary output option that depends on the main audio output but that may have different levels and working hours. The adjustment is made in the same way as described above for the main output. Please, contact us when buying the auxiliary sound output option. MRC AUDIO EQLimit...

  • Page 26: Limiter

    4 level LEDs and the numeric box to the right.  The vertical level bars show the real-time levels for the different channels and these can be seen with a fast or slow integration, chosen by the Display box. MRC AUDIO EQLimit...

  • Page 27: Calibration Process

    1, SML or Line Out, by clicking on either the Limiting Signal: MIC1,SML box or L.OUT box, located just underneath the meter bars.  Once chosen the limiting signal, all LEDs stop flashing and the pink noise is switched off. MRC AUDIO EQLimit...
  • Page 28 Preferences tab description further on. If automatic, the band comparison is registered in the events memory each time the limiter is switched on and the comparison is automatically launched. Or this comparison can be done manually whenever the installer or authorities require so. See Isolation tab description further on. MRC AUDIO EQLimit...

  • Page 29: Display

    By three big leds, show the activity of sound signal inside the unit: Green - Input signal is present at connectors and its level is under the max authorised level. Yellow - The unit is controlling the audio signal amplitude. Red - The unit mutes de audio output. MRC AUDIO EQLimit...

  • Page 30: Isolation 30 - 31

    Levels tab in order to fill in the global value and the timetable values. In the lower part, the calculated values of immission in the neighbor are shown in real time. MRC AUDIO EQLimit...
  • Page 31 “Global” value, distributed equally throughout the bands or with a value resulting from the choice of a normalized “STC” or “NC” curve, for isolation and for immision respectively. Or even manually, you can edit he desired value. MRC AUDIO EQLimit...
  • Page 32 To the right of these 12 bars that correspond to the filters, there are two other bars that measure the global level for microphone 1 and Line Out: With both groups of bands, we have both options in a single window and all the information, global and per bands, at a glance. MRC AUDIO EQLimit...
  • Page 33 (in the left scale white / blue of each band) and the current one (white bar). The limiter can also perform this checking automatically every time it is turned on if we program it in "Preferences". MRC AUDIO EQLimit...
  • Page 34 This window also shows total counters for the alarms and sessions that have occurred in the past of the limiter. It is possible to generate a report of the desired period in pdf. MRC AUDIO EQLimit...

  • Page 35: Events List 35 - 36 - 37 - 38

    Málaga for the authorized installers to send their reports to the authorities in that only municipality. NOTICE: In order to be able to generate the report in these formats, it is necessary to have installed Microsoft Word®, Excel or Adobe Reader MRC AUDIO EQLimit...
  • Page 36 All this stored data can be downloaded directly from the limiter via the USB connection; after downloading this data is kept in a data base in the PC and can be analysed in off line mode afterwards. MRC AUDIO EQLimit...
  • Page 37 Download time period selection box is chosen, the numbers in these two boxes will be the same. At the same time the events start to be listed in the events window at the bottom of this screen MRC AUDIO EQLimit...
  • Page 38 Name: the name of the installation; it is the one typed into the Installation box in the limiter’s file. (see 7.1.) Address: the installation’s address; it is the one typed into the address box in the limiter’s file. (see 7.1.) MRC AUDIO EQLimit...
  • Page 39 The reports are generated with a presentation layout except for the Excel format in which only an Excel table is generated, ready to make mathematical operations, in which the user can edit to make his own presentation layout and style. MRC AUDIO EQLimit...

  • Page 40: Graphs

    GRAPHS Clicking on the Graphs button the graphs screen appears and automatically graphs the data listed in the events window: MRC AUDIO EQLimit...
  • Page 41 Graphical report among Word, PDF or direct to the local printer. Click on any of the two to generate a graphical report with the actual selected data and zoom of the graph. The button Exit exits back to the events window. MRC AUDIO EQLimit...

  • Page 42: Preferences 42

    In this way the limiter delivers a slightly higher overall level without trespassing the global limit. The more bands chosen the higher output level is achieved, but depending on the type of music played, possibly a MRC AUDIO EQLimit...
  • Page 43 NOTICE: Each MRC Audio EQlimit has up to ten master passwords. Each time one is used it will not work ever again. If all ten master passwords are used and still the user keeps on forgetting the password, the limiter will have to be serviced at MRC Audio to restore ten new master passwords.
  • Page 44 At the time of this writing there are five authorized Internet sites for:  EQLimit SICREL (Sistema desarrollado por MRC Audio)  NETAUDIO  GALILEO  CALMAR  TIRAJANA In all cases you must request the registration to the administrator of the website and this entails an annual fee.

  • Page 45: Technical Characteristics

     Weight: 3Kg  Power supply: Universal switched 90-250 VAC /40 - 60 Hz. < 30 watts  Environment: From 10º to 50º C. Humidity Max 90% MRC AUDIO reserves the right to modify these equipment´s specifications without prior notice MRC AUDIO...

  • Page 46: Warranty

     Damage resulting from repair or attempted repair by anyone not authorized by MRC Audio.  Damaged occurring from shipping (claims must be presented to the carrier). In the case of a valid warranty claim, MRC AUDIO repair or replace the parts without charge. This warranty is not transferable.

  • Page 47: Remote Display

    Und. When updating the 4 segments travel upwards - - - - If the communication with the limiter fails, it shows no DAtA MRC AUDIO EQLimit...

  • Page 48: Remote Display

    2017-1244, go to the "Preferences" tab and you will see that it is probably already programmed according to the following figure, where it measures the SPL in dBA in fast mode. If not, configure it according to the following image. MRC AUDIO EQLimit...
  • Page 49 The three 10mm leds in the left margin show us the performance of the limiting system: GREEN when there is a signal in the input, and it is below the limitation threshold. YELLOW when it starts to limit, or a pre-alarm situation appears. MRC AUDIO EQLimit...
  • Page 50 LeqA and on the right the LeqC, with a time of 15 minutes as requested by the decree. If we want to use it to measure other parameters, we can choose them, according to fig. 4, selecting the corresponding box for each of the two lower displays. MRC AUDIO EQLimit...

  • Page 51: Certification 51

    CERTIFICATION MRC AUDIO EQLimit...
  • Page 52 MRC AUDIO EQLimit...
  • Page 53 -EN 60065:2002 + A1:2006 + Corr:2006 + Corr:2007 + A11:2008 + +A2:2010 + A12:2011 -UNE EN 60065:2003 + A1:2006 + Corr:2006 + Corr:2008 + A11:2010 + A2:2011 + A12:2011 Representante/ Representative: MRC AUDIO LIMITADORES, S.L. CIF: B85637403 Dirección / Manufacturer´s address: c/ Cavanilles, 50 - 5ºA C.P. 28007 MADRID - ESPAÑA...

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