Extron Electronics IN1508 User Guide - Manual (Page 51)

Optimizing the Audio
Each individual input audio level can be adjusted within a range of -65 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 ” on page 7).
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 30) 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 acting 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 the Extron 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 (see the last page of
this manual for the phone number in your region of the world).
IN1508 • Operation 46