Extron electronic ISM 482 manual Optimizing the Audio, Troubleshooting, General checks

Page 45

Operation, cont’d

Optimizing the Audio

Each individual input audio level can be adjusted within a range of -24 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 outputs to

 

output devices such as audio players. See “Input connections” and “Standard

 

output connections” 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 “Selecting an input”, earlier 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 “Video & Audio

 

Configuration menu”, earlier in this chapter) so that the output level is

 

approximately the same for all selected inputs.

Troubleshooting

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 the LCD is displaying the default display cycle.

2.

Ensure an active input is selected on the switcher.

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.

3-20 Integration Scaling Matrix Switcher • Operation

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Contents ISM Precautions FCC Class B Notice Integration Scaling Matrix Switcher Quick Start QS-1 Quick Start Integration Scaling Matrix SwitcherQS-2 Integration Scaling Matrix Switcher Quick Start Quick Start Integration Scaling Matrix Switcher, cont’dTable of Contents Table of Contents, cont’d Integration Scaling Matrix Switcher Table of Contents Iii Iv Integration Scaling Matrix Switcher Table of Contents One Integration Scaling Matrix Switcher Introduction About the SwitcherIntroductiontroduction, cont’d About this ManualExtron ISM Introduction, cont’d Integration Scaling Matrix Switcher Introduction Introduction, cont’d Two Mounting the Switcher Installationstallation, cont’dTabletop placement Rack mountingMounting instructions Mounting the switcherInstallation, cont’d Cabling and Rear Panel ViewsInput connections Captive screw connector wiring for inputs BNC output connections for Rgbhv and Rgbs video Standard output connectionsOptional output connection Cabling and RJ-45 connector wiring Wiring the network cableChoosing a network cable RS-232 connection ConfigurationInstallation, cont’d Three Integration Scaling Matrix Switcher Operation Front Panel Controls and IndicatorsOperationeration, cont’d Video/Audio selection button and LEDsOutput buttons and LEDs Input buttons, LEDs, and label windowFront panel input label window Picture adjustment buttons Operation, cont’dBlack/Mute button and LEDs Adjustment knobs LCD displayMenu control buttons Front Panel Operations PowerExtron Electronics ISM 60-425-01 Version Menu system overviewInput Configuration submenu Video & Audio Configuration menuOutput Resolution submenu Output Configuration menuOperation, cont’d 10 Advanced Configuration menu flowchart RGB Delay submenu Blue-Only Mode and Edge Smoothing submenuTest Pattern submenu Blanking submenuPixel Phase submenu Enhanced Mode submenuPAL Film Mode submenu Reset submenuSave Preset submenu User Presets menuExit menu Erase Preset submenu13 Picture adjustments flowchart Picture adjustmentsAdjust knobs have no mechanical limits to their rotation Front panel security lockout Executive modeIP information Optimizing the VideoCentering controls to position the image Setting up a DVD sourceTroubleshooting Optimizing the AudioGeneral checks Problem Cause Specific problemsOperation, cont’d Four Integration Scaling Matrix Switcher Programmer’s Guide RS-232 LinkEthernet Link Symbols Default addressEthernet connection Power-up Switcher-Initiated MessagesProgrammer’s Guide, cont’d Ties creationX2 Col PAL film mode RGB delayAutomated adjustments Test patternHost-to-Switcher Instructions Switcher error responsesUsing the command/response table Programmer’s Guide, cont’d Command Ascii Command Response Additional description Command/response table for SIS commands cont’dHorizontal detail filter RGB and component video inputs User presets Verbose mode Resets Command/response table for IP SIS commandsCommand/response table for IP SIS commands Command/response table for special function SIS commandsX2 Reconfig message may not be Command Hex Command Response Command/response table for advanced instruction set commandsFive Installing the software Integration Scaling Matrix Switcher Switcher SoftwareControl Software for Windows Software operation via Ethernet Ethernet protocol settingsUsing the control program Switcher Software, cont’dWindows Control program window Button-Label Generator Using the help programTo run the Button-Label Generator program, click Start Using the softwareSwitcher Software, cont’d Six Integration Scaling Matrix Switcher Ethernet Operation EthernetOperation,cont’dLoading the Startup Control Control Ethernet Operation, cont’d Changing the RGB delayControl Creating a tieExecutive mode Using Blue-Only modeFreezing the output Outputting a test patternSystem Configuration System ConfigurationISM IP Settings fields Administration fieldsISM IP Address field ISM Name fieldFile Management File ManagementI/O Configuration Input configurationEthernet Operation, cont’d Output rate Output resolutionOutput polarity Output formatSeven Opening and Closing the Switcher Maintenance and ModificationsGrounding wrist strap is recommended Installing a Firmware Upgrade Maintenance and Modifications, Cont’dDVI output card connector opening and socket J14 Installing a DVI Output CardOutput DVI board installation AAppendix a Integration Scaling Matrix Switcher Ethernet Connection Ethernet ConnectionCabling Determining Default Addresses Pinging to determine the switcher’s IP addressPinging to determine the Web IP address Ethernet Connection, cont’d Connecting as a Telnet ClientTelnet tips OpenLocal echo Escape character and Esc keySet carriage return-line feed CloseEthernet Connection, cont’d AppendixBB Reference Information Audio Reference Information, cont’d Button Labels Reference Information, cont’d Integration Scaling Matrix Switcher Reference Information Reference Information, cont’d Extron’s Warranty Extron Electronics, Europe Beeldschermweg 6C
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