Extron electronic PVS 204SA manual Resetting the Switcher, Clipping indicator, Aux/Mix control

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Clipping indicator

The clipping LED is a real time indicator of when the amplifier is clipping. It flashes red when clipping is taking place (see figure 3-7).

AUDIO
AUX/MIX	LEVEL
MIN/MAX	CLIP	This LED flashes when the
		This LED flashes when the
		amplifier output is clipping.

Figure 3-7 — Front Panel audio clipping indicator LED and recessed encoders

NTo reduce the risk of damage to the speaker, reduce the amplifier level by turning the encoder counterclockwise until the Clip LED turns off.

Bass, treble, and loudness control

For optimum audio quality, the audio input levels and the bass, treble, and loudness controls must all be set up properly. Input audio levels may need to be adjusted depending on the variation of the output levels from different source devices.

NBy default these levels are set for the consumer product level of ‑10 dBV.

Bass and treble should be adjusted once the input and output levels have been adjusted. These are adjusted by RS-232 control only, with a range from -10 dB to +10 dB. By default the bass and treble have been set at 0 dB. See chapter 4, “Serial Communication”, for details on RS-232 control.

The loudness on/off (default off) switch and the clip limiter on/off (default off) function are also controlled by RS-232.

Aux/Mix control

The Aux/Mix input is line level mono. It is divided into two matching channels and then summed with the main left and right channel audio inputs. Aux/Mix volume is independent of other input gains, power amp gain, and volume. The recessed encoder has 20 detents (steps) per revolution, each step making 1 dB change. The Aux/mix range is from -18 dB to +24 dB, default is 0 dB.

NWhen the minimum (-18 dB) or the maximum (+24 dB) is reached, the min/max LED (see figure 3-6) flashes red.

Resetting the Switcher

The switcher can be reset to the factory defaults via the front panel or RS-232.

To reset the switcher via the front panel, follow these steps.

1. Unplug the switcher from the power source.

2. Press and hold input selection button 1 while reapplying power to the

switcher. All the input selection LEDs blink for 1 second while the switcher is reset.

For details on RS-232 control, see chapter 4, “Serial Communication”.

PRELIMINARY

PVS 204SA Switcher • Operation and Setup

3-7

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Contents PVS 204SA PoleVault SwitcherSafety Instructions English PrecautionsConsignes de Sécurité Français Sicherheitsanleitungen DeutschFCC Class a Notice Quick Start PVS 204SAQuick Start PVS 204SA, cont’d Table of Contents Table of Contents, cont’d One Introduction PVS 204SA Switcher IntroductionAbout this Manual About the PVS 204SAFeatures Introduction, cont’d Application DiagramsMLP 101 AAP Introduction, cont’d Two UL/Safety Guidelines InstallationImportant safety instructions PVS 204SA Switcher InstallationInstalling the PVS 204SA on the PMK Mounting the SwitcherRear Panel Features and Cabling Power connectionInput connections Twisted pair RGB video and audio cable wiring Output connections Installation, cont’dAs shown at right Aux/Mix input connectionControl connection RS-232/MLC/IR control port The PVS switcher can beConfigured with a driver to 12 Connecting an IR Link to the switcher Speaker arrangement examples Speaker ConfigurationStereo or Dual Mono Output using parallel speaker wiring Connecting speakers to the PVS 204SALabeling the A/V Inputs Labeling and connecting the A/V input cablesLabeling the PVT Decora face plates Final SetupThree Operation and Setup Front Panel Features and OperationPVS 204SA Switcher Operation and Setup Single switcher mode Setting Switcher ModesSeparate switcher mode Setting the single switcher mode via the front panelAuto Switching Setting the separate switcher mode via the front panelSetting the input auto switching mode via the front panel Steps for optimizing the audio Setting Up and Optimizing the AudioGain control Front panel input sensitivity adjustmentIndividual channel input sensitivity control Amplifier level controlClipping indicator Resetting the SwitcherBass, treble, and loudness control Aux/Mix controlSetting the executive mode via the front panel Front Panel Security Lockout Executive ModeFour RS-232 Programmer’s Guide Serial CommunicationHost-to-PVS communications PVS-initiated messagesError responses Using the command/response tablesSymbol definitions Serial Communication, cont’d Factory defaultsCommand Ascii Command Response Additional description Command/response table for SIS commandsVolume adjustment Status commandsCommand Ascii Command Response ? values Command/response table for special function SIS commandsUpdating Firmware Click Upload to upload the firmware file into the PVS 204SA Preliminary Reference Material Reference Material PVS 204SA Switcher Reference MaterialVideo output composite video Reference Material, cont’d Part Numbers and Accessories AccessoriesIncluded parts Speaker accessories Cable accessoriesAccessory Part number Reference Material Audio Block DiagramDBV Voltage DBu Audio Reference LevelsExtron’s Warranty Extron USA West