Extron electronic SW AV manual Optimizing the Audio Audio Switchers, Memory

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Operation, cont’d

Executive mode (front panel security lockout)

Audio switchers have an executive mode that limits the operation of the SW AV switcher from the front panel. When the switcher is in executive mode, the I/O button (video/audio/video and audio selection), toggling between autoswitch and normal mode, and all of the front panel audio gain and attenuation functions are disabled.

Toggle executive mode on and off as follows:

1.

Press and hold the Mode (Input 1) button.

2.

Press and release the Input 4 button. The Executive Mode LED changes state.

 

If executive mode was off, the LED turns on to indicate that the switcher has

 

entered executive mode.

 

If executive mode was on, the LED turns off to indicate that the switcher has

 

left executive mode.

3.

Release the Mode button.

Memory

Audio and mode settings are saved in nonvolatile memory. When the switcher is powered off, the settings are retained. When the switcher is powered on, the saved memory settings are active. The selected input is not a saved value; when the switcher is powered on it, defaults to input 1.

If a video switcher is powered off in auto mode, it automatically switches to the highest-numbered input with video sync pulses present when it is powered back on. If no input has video present, all input select LEDs are off (only the Power LED is on, if equipped).

Optimizing the Audio (Audio Switchers)

Each individual input audio level can be adjusted within a range of -18 dB to +24 dB, so there are no noticeable volume differences between sources and for the best headroom and signal-to-noise ratio. Adjust the audio gain and attenuation as follows:

1.

Connect audio sources to all desired inputs and connect the audio outputs to

 

output devices such as audio players. See Audio input and output connections

 

(audio models only), in chapter 2, Installation. For best results, wire all of the

 

inputs and the outputs unbalanced.

2.

Power on the audio sources, the switcher, and the audio players.

3.

Switch among the inputs (see Switching inputs, in this chapter), listening to the

 

audio with a critical ear or measuring the output audio level with test

 

equipment, such as a VU meter.

4.

As necessary, adjust the audio level of each input (see Adjusting audio gain and

 

attenuation (audio switchers), in this chapter) so that the approximate output

 

level is the same for all selected inputs.

3-12 SW AV Series Switchers • Operation

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Contents SW AV Series Precautions Quick Start SW AV Series Switchers SW AV Series Switchers Quick Start QS-1Quick Start SW AV Series Switchers, cont’d Table of Contents Table of Contents, cont’d One About the Switchers FeaturesVideo switchers Introductiontroduction, cont’dSW AV Series Switchers Introduction Inputs Outputs Model CaptiveVideo Screw Audio All video modelsAudio switchers Captive screw connector a modelsRCA connector a RCA models All audio modelsAll switcher models Introduction, cont’d Two Mounting the Switcher Installationstallation, cont’dInstallation Overview Mounting the switcher Cabling and Rear Panel ViewsAudio input and output connections audio models only Installation, cont’dVideo input and output connections video models only Captive screw connector wiring for audio inputs Remote connection External sync connectionPower connection Simple external sync connection exampleInstallation, cont’d Three Operationeration, cont’d Front Panel Controls and IndicatorsSW AV Series Switchers Operation SW 8A front panel Input selection controls and indicators Operation, cont’dAudio controls and indicators audio switchers Autoswitch mode controls and indicator video switchersExecutive mode controls and indicator PowerSwitching inputs Front Panel OperationsExample 2 Select a video input only video and audio switcher Example 1 Select an inputAdjusting audio gain and attenuation audio switchers Video switchers must be in normal modeExample 4 Adjust the audio level Not increment or decrement the audio levelExample 4, step E Adjusting the audio level Audio level reset all inputs Switch modeAudio level reset single input Memory Optimizing the Audio Audio SwitchersExecutive mode front panel security lockout Troubleshooting If no Image Appears Operation, cont’d Four Host-to-switcher communications SW AV Series Switchers Remote ControlRemoteControl,cont’d Simple Instruction Set ControlSwitcher-initiated messages Error responsesTimeout Using the command/response tableCommand Ascii Command Response Additional description Remote Control, cont’dSymbol definitions Resets Windows-Based Program Control Installing the softwareUsing the software Contact Closure Control SW 4 and SW 6 Models Only Infrared Remote ControlUsing the help system Remote Control, cont’d Specifications and Part Numbers AAppendix aSpecificationsecifications, cont’d SW AV Series Switchers Specifications and Part NumbersAudio Specifications, cont’d Control/remote switcherOptional accessories SwitcherCables Extron PartSuper High Resolution Cable Bulk cables Super High Resolution CableFCC Class a Notice Extron’s Warranty Extron Electronics, USA
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