Extron Electronics MTPX Series User Guide - Manual (Page 72)

Operation, cont’d
MTPX Twisted Pair Matrix Switchers • Operation 3-46
PRELIMINAR
Y
Optimizing the Audio
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 local audio
outputs to output devices such as audio players. See “Signal inputs”, in
chapter 2, “Installation”. For best results, wire all of the inputs and the
outputs as balanced.
2 . Power on the audio sources, the switcher, and the audio players.
3 . Switch among the inputs (see “Creating a configuration”, on page 3-10),
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 input audio level of each input (see “Viewing and
adjusting the TP input audio level”, on page 3-26) so that the approximate
output level is the same for all selected inputs.
5 . As necessary, adjust the output audio level of each input (see “Viewing and
adjusting the local output volume”, on page 3-32).
Video Adjustments
Image adjustments are available via SIS commands and the Windows-based
control and configuration program. See “Optimizing the Video”, in chapter 5,
“Matrix Software”.
Troubleshooting
This section gives recommendations on what to do if you have problems operating
the switcher and describes an actual image problem that Extron has encountered.
1 . Ensure that all devices are plugged in and powered on. The switcher is
receiving power if one of the front panel I/O LEDs is lit.
2 . Check to see if one or more outputs are muted.
3 . Ensure an active input is selected for output on the switcher.
4 . Ensure that the proper signal format is supplied.
5 . Check the cabling and make corrections as necessary.
6 . Call the Extron S 3 Sales & Technical Support Hotline if necessary. See the rear
cover of this manual for the phone number in your region of the world.