Extron Electronics SW YUV A Series User Guide - Manual (Page 26)

Operation, cont’d
SW RGB and YUV A Switchers • Operation 3-6
If the +dB and –dB LED are both lit they indicate 0 dB. Otherwise, you can
determine the exact gain or attenuation using the following procedure.
a . If one or more input LEDs are lit AND the +dB LED is/are lit , press and
release the button repeatedly until the highest-numbered lit input LED
goes out. Count the button presses. In this example, assume a value of
+8 dB. It will take three presses of the
button for the Input 1 LED to
go out.
If one or more input LEDs is/are lit AND the –dB LED is lit , press and
release the button repeatedly until the most highest-numbered lit
input LED goes out. Count the button presses, each of which represents
a 1 dB increment.
If the +dB LED is lit and NO input LEDs are lit , press and release the
button repeatedly until the +dB and –dB LED are both lit, indicating 0
dB. Count the button presses, each of which represents a 1 dB increment.
If the -dB LED is lit and NO input LEDs are lit , press and release the
button repeatedly until the +dB and –dB LED are both lit, indicating 0
dB. Count the button presses, each of which represents a 1 dB increment.
b . Return to the original audio level setting by pressing and releasing the
or
button (the opposite of the button you pushed in step 3a) the same
number of steps you pushed the opposite arrow button in step 3a. In
this example
, this means pushing the button three times.
c . Add the dB value indicated by the highest-numbered lit output LED (no
output LEDs lit and both dB LEDs lit = 0 dB) and either of the following:
• The number of button presses from 0 dB, or
• The number of button presses from when the highest-numbered
output LED lit. In this example:
Output 1 LED: 6 dB
+ 2 presses: +2 dB
8 dB
d . The lit +dB or –dB LED indicates the gain (+) or attenuation (-).
4 . Press and release the button several times to decrease the audio level
displayed in the input LEDs by 1 dB per button push. The LED flashes
each time the button is pressed. Note the input LED, +dB LED, and –dB LED
changes that occur each time the
button is pressed and released. Figure 3-5
shows the result of pressing the button a total of nine times to change the
value to –1 dB. Note that the +dB LED has turned off and that the –dB LED is
on to indicate a negative level.
6 5 4 3 2 1
-dB +dB
LED key: = off
Indicates 0dB to -6dB range
Figure 3-5 — Example, step D: Adjusting the audio level
5 . Press and hold the Audio Conf/Save button until the Audio
LED goes off. The input LEDs stop displaying the audio level
range, the +dB and –dB LEDs go off, and the selected input
LED lights.
CONF/SAVE
Press
and release.