Extron electronic SW AV manual Audio switchers, Captive screw connector a models, All audio models

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Introduction, cont’d

External sync input and output connectors — Allow the switcher to use a black burst (genlock) signal to synchronize switching during the vertical interval. This ensures glitch-free switching among multiple timed sources.

Audio switchers

Captive screw connector (A) models

Inputs — These switchers input 4, 6, 8, or 12 balanced or unbalanced stereo audio signals, on 3.5 mm, 5-pole captive screw terminals.

Outputs — The selected audio input is split, buffered, and output as 2 balanced or unbalanced audio signals, on 3.5 mm, 5-pole captive screw terminals.

RCA connector (A RCA) models

Inputs — These switchers input 4, 6, 8, or 12 unbalanced stereo audio signals on left and right RCA connectors.

Outputs — The selected audio input is split, buffered, and output on 2 sets of connectors.

•One balanced or unbalanced audio signal, on a 3.5 mm, 5-pole captive screw terminal.

•One unbalanced stereo audio signal on left and right RCA connectors.

All audio models

Audio gain/attenuation — Users can set the input level of audio gain or attenuation (-18 dB to +24 dB) via the RS-232 link or from the front panel. Individual input audio levels can be adjusted so there are no noticeable volume differences between sources (figure 1-2) and for the best headroom and signal-to-noise ratio. This function also eliminates the need for separate preamps or attenuators when used with professional (higher line level) and consumer (lower line level) audio equipment.

	dBu	dBV
	+10	+8
	+7	+5
	+4	+2
	+1	-1
	-2	-3	Consumer VCR
	-5	-7	Consumer VCR
	-8	-10	Audio
	-12	-14	Audio
	-12	-14	Inputs
	Low Audio		Inputs
	Low Audio
	Output Level		SW SERIES
			VIDEO / AUDIO SWITCHER

dBu	dBV
+10	+8
+7	+5
+4	+2
+1	-1
-2	-4
-5	-7
-8	-10
-12	-14

Output

Level

I/O	1	2	3	4	5	6	7	8	9	10	11	12	AUDIO
													CONF/SAVE -dB	+dB

		Audio
dBu	dBV	Inputs
+10	+8
+7	+5
+4	+2
+1	-1
-2	-3
-5	-7
-8	-10
-12	-14

High Audio

Output Level

SW AV Series Switcher

Audio System

No noticeable volume

differences between sources

Pro CD Player

Figure 1-2 — Audio gain and attenuation

1-4 SW AV Series Switcher • Introduction

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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 Video switchers About the SwitchersFeatures Introductiontroduction, cont’dVideo Screw Audio SW AV Series Switchers IntroductionInputs Outputs Model Captive All video modelsRCA connector a RCA models Audio switchersCaptive screw connector a models All audio modelsAll switcher models Introduction, cont’d Two Installation Overview Installationstallation, cont’dMounting the Switcher Mounting the switcher Cabling and Rear Panel ViewsVideo input and output connections video models only Installation, cont’dAudio input and output connections audio models only Captive screw connector wiring for audio inputs Remote connection External sync connectionPower connection Simple external sync connection exampleInstallation, cont’d Three SW AV Series Switchers Operation Front Panel Controls and IndicatorsOperationeration, cont’d SW 8A front panel Input selection controls and indicators Operation, cont’dAudio controls and indicators audio switchers Autoswitch mode controls and indicator video switchersSwitching inputs Executive mode controls and indicatorPower 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 single input Switch modeAudio level reset all inputs Executive mode front panel security lockout Optimizing the Audio Audio SwitchersMemory Troubleshooting If no Image Appears Operation, cont’d Four RemoteControl,cont’d Host-to-switcher communicationsSW AV Series Switchers Remote Control Simple Instruction Set ControlTimeout Switcher-initiated messagesError responses Using the command/response tableSymbol definitions Remote Control, cont’dCommand Ascii Command Response Additional description Resets Using the software Installing the softwareWindows-Based Program Control Using the help system Infrared Remote ControlContact Closure Control SW 4 and SW 6 Models Only 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 switcherCables Optional accessoriesSwitcher Extron PartSuper High Resolution Cable Bulk cables Super High Resolution CableFCC Class a Notice Extron’s Warranty Extron Electronics, USA