Extron electronic MVX VGA A manual Reading the displayed volume

Page 54

Reading the displayed volume

NThis section is a detailed description at reading the output volume display on the matrix switcher’s front panel. If you do not need to read the exact value of the volume setting, skip this section.

There are 65 steps of volume attenuation, with 1 dB per step (button press), except for 0-to-1, which is 13 dB. At maximum attenuation, no input LEDs are lit, 76 dB of attenuation is applied, and the audio output is effectively muted. At no attenuation, all input LEDs are lit, and the output volume is equal to the input signal plus any gain or attenuation that is applied to that specific input using the input audio level adjustment. (See “Viewing and adjusting the input audio level”, on page 3-25). Other than the minimum and maximum volume, the switchers indicate the volume differently, depending on number (12 or 16) of input LEDs. See the table on the next page to read the volume display for each display scheme.

For each display scheme, the input LEDs blink or light sequentially to indicate the approximate volume of the selected output. Volume is defined as a percentage of the input audio signal that is applied to the output. From 0% of volume, the first Esc (>) button press applies 5.5% of the input audio signal. From 5.5% on, each Esc (>) press applies 1.5% more of the input audio signal to the output:

Press Esc (>) button — 5.5% + 1.5% = 7% volume

mAll switcher input button configurations The Input 1 LED continues blinking slowly.

Press Esc (>) button twice — 7% + 1.5% + 1.5% = 10% volume

mSwitchers with 12 input buttons — The Input 1 LED blinks quickly.

mSwitchers with 16 input buttons — The Input 1 LED lights steadily.

Press Esc (>) button 19 times — 10% + (19•1.5%) = 38.5% volume

mSwitchers with 12 input buttons The Input 1 through 4 LEDs light steadily.

mSwitchers with 16 input buttons — The Input 1 through 5 LEDs light steadily and the Input 6 button blinks.

When all input LEDs are lit for any switcher model, the audio output is 100% of the audio input level.

Another way to view the volume level is to think in terms of the attenuation that is applied to the output. Attenuation reduction is indicated by the lit or blinking input LEDs: when fewer input LEDs are lit, attenuation is greater (and the volume is quieter).

At minimum volume, all input LEDs are unlit and 76 dB of attenuation is applied to the output. The audio output is effectively muted.

The first step of volume increase causes the Input 1 LED to blink (slowly, in the case of switchers with 12 input buttons). Attenuation is reduced by 13 dB (63 dB of attenuation is applied to the output).

The second step of volume increase reduces the attenuation by an additional 1 dB (62 dB of attenuation is applied to the output).

Successive steps of volume increase cause consecutive LEDs to first blink, then light steadily.

PRELIMINARY

MVX VGA A Matrix Switchers • Operation 3-31

Image 54
Contents Computer Video VGA and Audio Matrix Switchers MVX VGA aSicherheitsanleitungen Deutsch Safety Instructions EnglishConsignes de Sécurité Français Instrucciones de seguridad EspañolFCC Class a Notice Preset button selects MVX VGA a Matrix Switchers Quick Start QS-1Input and output buttons select inputs QS-2 MVX VGA a Matrix Switchers Quick Start Saving or recalling a presetViewing and adjusting the audio level Creating a tieTable of Contents Table of Contents, cont’d Appendix a Specifications, Part Numbers, Accessories MVX VGA a Matrix Switchers Table of Contents IiiIv MVX VGA a Matrix Switchers Table of Contents One About the MVX VGA a Matrix Switchers MVX VGA a Matrix Switchers IntroductionAbout this Manual Definitions Features Tie any input to any or all outputsPreliminary Preliminary Two UL requirements Mounting the SwitcherMVX VGA a Matrix Switchers Installation Mounting instructionsRear Panel Cabling and Views Computer OUTSync Impedance switches Video connectionsAudio connections OhmsRS-232/RS-422 connection Connections for balanced and unbalanced audio outputs TheseReset button Power connectionFront Panel Configuration Port Be used for this connectionThree Front Panel Controls and Indicators MVX VGA a Matrix Switchers OperationDefinitions Input and output buttons Sample labelOperation, cont’d Control buttonsPreliminary Controls Power Front Panel OperationsFront panel security lockouts Creating a configuration Example 1 Creating a set of video and audio ties Press and release the Esc button figureSelect the outputs Example 2 Adding a tie to a set of video and audio ties Press and release the Input 5 button figurePress and release the Output 1 button figure 13 Press the Enter button Example 3 Removing a tie from a set of video and audio ties 15 Clear all selectionsPress and release the Output 4 button figure Press and release the Enter button figureViewing a configuration 21 Clear all selectionsPreliminary Rgbhv button and the Audio button figure24 Deselect Rgbhv to view audio ties only Muting and unmuting video and/or audio Example 5 Muting and unmuting an output28 Select Rgbhv and audio 30 Unmute the outputs Using global presets 32 Preset locations, MVX 128 VGA aExample 6 Saving a preset LED blinks figureExample 7 Recalling a preset Press and release the Preset button figure40 Select the preset Viewing and adjusting the input audio level 42 Audio gain and attenuationExample 8 Viewing and adjusting an input audio level 43 Clear all selectionsPreliminary 45 Select an input and read the audio level 47 Adjust the input audio level Viewing and adjusting the output volume Reading the displayed volume Audio output volume settings Example 9 Viewing and adjusting an output volume level 50 Clear all selections52 Select output 54 Adjust the output audio volume Setting the front panel locks Executive modes Selecting Lock mode 2 or toggling between mode 2 and modePerforming a system reset from the front panel System reset does not replace user-installed firmwareSelecting the rear panel Remote port protocol and baud rate Release the Control buttons61 RS-232/RS-422 and baud rate selection Performing an absolute system reset from the rear panel Rear Panel OperationsPerforming a hard reset from the rear panel Optimizing the AudioTroubleshooting Configuration WorksheetsWorksheet example 1 System equipment Worksheet example 2 Daily configuration 66 Worksheet example 2 Daily configurationWorksheet example 3 Test configuration PreliminaryConfiguration worksheet Preset #Preliminary Four MVX VGA a Matrix Switchers Programmer’s Guide Serial PortsRear panel Remote port Host-to-Switcher Instructions Switcher-Initiated MessagesFront panel Configuration port Switcher Error Responses Using the Command/Response TableCommand/Response Table for SIS Commands Symbol definitionsCommand Ascii command Response Additional Description% G InX! AudX$ Preliminary Exng EZG EX1$ *X1% ,X1 ,X1& ,X1* CP CpnX1$ CcpX1% ,X1 ,X1& ,X1 VX2XX2!AX2XX2 Five Matrix Switchers Control Program Installing the softwareMVX VGA a Matrix Switchers Matrix Software Using the Matrix Switcher Control software Comm port selection windowMatrix Software, cont’d Sample program window complete Location of firmware upgrade files Updating firmwareDownloading firmware upgrade files Open window Firmware Loader status indicator bar Windows buttons, drop boxes, and trash can Windows menusFile menu Tools menu 10 Status windowMaster-Reset selection Preferences menuUsing Emulation mode Using the help systemButton-Label Generator Program Using the Button-Label Generator software 14 Extron’s Button-Label Generator windowAppendixAA Specifications, Part Numbers, Accessories SpecificationsSync Specifications, Part Numbers, Accessories, cont’d Accessories Part Numbers and AccessoriesMVX matrix switcher part numbers Included partsMale-to-male VGA molded connector cables Part number Male-to-female VGA molded connector cables Part numberMale-to-female VGA backshell connector cables Part number CablesPreliminary Button Labels Preliminary Preliminary Extron’s Warranty Asia JapanExtron Electronics, Europe Beeldschermweg 6C
Related manuals
Manual 19 pages 43.08 Kb