Extron electronic IN1508 manual Optimizing the Audio, Troubleshooting, General checks

Page 62

Optimizing the Audio

Each individual input audio level can be adjusted within a range of -53 dB to +9 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 output to

 

an output device such as an audio player. See “Audio connections”, in

 

chapter 2, “Installation”.

2.

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

3.

Select an input, listening to the audio with a critical ear.

4.

As necessary, adjust each variable for the input (see “Input Gain/Attenuation

 

status indicator bar”, on page 3-22) for optimum audio quality.

5.

Select each input in turn and repeat step 4 for each input.

Troubleshooting

This section gives recommendations on what to do if you have problems operating the switcher, and it provides examples and descriptions for some image problems you may encounter.

The following tips may help you in troubleshooting.

•Some symptoms may resemble others, so you may want to look through all of the examples before attempting to solve the problem.

•Be prepared to backtrack in case the action taken does not solve the problem.

•It may help to keep notes and sketches in case the troubleshooting process gets lengthy. This will also give you something to discuss if you call for technical support.

•Try simplifying the system by eliminating components that may have introduced the problem or made it more complicated.

•For sync-related problems: Portable digital projectors are designed to operate close to the video source. Sync problems may result from using long cables or from improper termination. A sync adapter, such as Extron’s ASTA (Active Sync Termination Adapter), may help solve these problems.

•For LCD and DLP projectors and plasma displays: In addition to the sync- related information above, check the user’s manual that came with the projector for troubleshooting tips, as well as for settings and adjustments. Each manufacturer may have its own terms, so look for terms like “auto setup”, “auto sync”, “pixel phase”, and “tracking”.

General checks

1.

Ensure that all devices are plugged in and powered on. The switcher is

 

receiving power if one of the Input LEDs is lit.

2.

Ensure that the input selected is active.

3.

Ensure that the proper signal format is supplied.

4.

Check the cabling and make corrections as necessary.

5.

Call the Extron S3 Sales & Technical Support Hotline if necessary.

IN1508 Scaling Presentation Switcher • Operation 3-39

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Contents IN1508 Precautions FCC Class a Notice Quick Start IN1508 Scaling Presentation Switcher Front Panel Controls Table of Contents Table of Contents, cont’d IN1508 Scaling Presentation Switcher Table of Contents Iii Iv IN1508 Scaling Presentation Switcher Table of Contents One Introductiontroduction, cont’d IN1508 Scaling Presentation Switcher Introduction DVI videoIN9700 cable FeaturesStandard DVI cable IN1508 Scaling Presentation Switcher Introduction Introduction, cont’d IN1508 Scaling Presentation Switcher Introduction Introduction, cont’d Two Rack mounting Mounting the SwitcherTabletop use Video connections Power connectionCabling and Rear Panel Views Installation, cont’d Audio connectionsRS-232 connection Remote Control Battery InstallationConfiguration Installation, cont’d Three Infrared sensor Front Panel Controls and IndicatorsIN1508 Scaling Presentation Switcher Operation Input controls Input selection buttons and LEDsOperation, cont’d Output Rate selectionPicture-in-Picture controls PIP buttonsPicture Controls buttons Menu control buttonsPicture-In-Picture PIP buttons The PIP Remote Control ButtonsDesired buttons on the remote. The maximum Input Selection buttons The Input SelectionOperation, cont’d Power OperationsInput selection operation Picture-in-picture mode operation10 IN1508 Scaling Presentation Switcher Operation PIP mode input selection and swap operations 12 IN1508 Scaling Presentation Switcher Operation Menu system operationSelection boxes and status indicator bars ButtonsSelection box control Status indicator bar control14 IN1508 Scaling Presentation Switcher Operation For menu system operation For picture control button operationInput submenu 16 IN1508 Scaling Presentation Switcher OperationMain menu system Zoom selection Center selectionSize selection Pan selectionOperation, cont’d Color status indicator bar Brightness status indicator barContrast status indicator bar Tint status indicator bar20 IN1508 Scaling Presentation Switcher Operation Output submenuSync Polarity selection box Resolution selection boxRefresh Rate selection box Input Gain/Attenuation status indicator bar Signal Type selection boxOutput Volume status indicator bar 22 IN1508 Scaling Presentation Switcher OperationFreeze selection box Audio Delay selection boxAdvanced submenu Blank selection boxBlue Mode selection box PIP Mode selection boxFade Switch selection box Reset selection boxPerforming a system reset from the front panel Picture adjustments26 IN1508 Scaling Presentation Switcher Operation Press again20 Picture adjustments flowchart, IR remote control buttons 28 IN1508 Scaling Presentation Switcher Operation Sharpness status indicator bar, on 30 IN1508 Scaling Presentation Switcher Operation Setting up a DVD sourceResolution and refresh rates Optimizing the VideoCRT displays selecting the optimum resolution CRT displays selecting the optimum refresh rate32 IN1508 Scaling Presentation Switcher Operation CRT DisplaysInput submenu’s Advanced selections 22 Input submenu’s Advanced selections23 Advanced input settings 34 IN1508 Scaling Presentation Switcher OperationHorizontal Start and Vertical Start status indicator bars 24 Incorrectly started imageActive Pixels and Active Lines status indicator bars 36 IN1508 Scaling Presentation Switcher OperationHorizontal rate = 31.5 kHz, vertical rate 60 Hz 38 IN1508 Scaling Presentation Switcher Operation Total Pixels status indicator barPhase status indicator bar General checks TroubleshootingOptimizing the Audio Specific problems 40 IN1508 Scaling Presentation Switcher OperationImage is stretched Active lines may be HorizontallyCompressed Vertically42 IN1508 Scaling Presentation Switcher Operation Setting cannot be Problem Possible cause Solution Total pixels settingActive lines setting Horizontal start44 IN1508 Scaling Presentation Switcher Operation Four Switcher Error Responses Host-to-Switcher InstructionsSwitcher-Initiated Messages IN1508 Scaling Presentation Switcher Serial CommunicationsUsing the Command/Response Table Symbol definitionsCommand/response table for SIS commands Command Ascii Command Response Additional descriptionCommand/response table for SIS commands cont’d Zoom Audio mute Command/response table for special function SIS commands Command/Response Table for Special Function SIS CommandsInput aspect ratio DVI auto-detect DVI input 8 only AAppendix a Specifications and Part Numbers SpecificationsAudio Suggested adapters Part NumbersIncluded parts CablesHigh performance DVI cables Cable Part number Specifications and Part Numbers, cont’d Extron’s Warranty Asia JapanExtron Electronics, Europe Beeldschermweg 6C
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