Extron electronics VGA MATRIX SWITCHERS MVX PLUS 128, Руководство пользователя

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MVX Plus 128 VGA Matrix Switchers • Operation
PRELIMINAR
Y
Performing a hard reset
The hard reset function restores the switcher to the base fi rmware that it was
shipped with. After a hard reset, events do not automatically start, but user settings
and fi les are restored. Perform a hard reset as follows:
N The hard reset restores the factory-installed fi rmware. The switcher reverts to
that factory fi rmware the next time power is cycled off and on unless a fi rmware
update is performed before the power cycle.
1 . If necessary, turn off power to the switcher.
2 . Press and hold the Reset button on the rear panel while you apply AC power
to the switcher (fi gure 3-71).
Power
RESET
LAN
RESET
Press and hold the Reset button while you apply power to the
switcher.
The switcher flashes the button indicators green ,
red , and amber and then turns them off.
Continue to hold the Reset button until all input and output buttons return
to either unlit or to background illumination and the RGBHV and Audio
buttons turn on.
Release the Reset button.
NOTE The Reset button on switchers with matrix sizes of 24 x 12 and above
have a different appearance and do not have a rear panel Reset LED.
Figure 3-71 — Hard reset
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 audio outputs
to output devices such as audio players. See
Audio connections , in chapter 2,
Installation . For best results, wire all of the inputs and the outputs balanced.
2 . Power on the audio sources, the switcher, and the audio players.
3 . Switch among the inputs (see Creating a confi guration , 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 input audio level of each input (see Viewing and
adjusting the input audio level , in this chapter) 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 output volume , in this chapter).