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im Vertrieb von
Operation, cont'd
Viewing and adjusting the output volume
The audio level of each output can be displayed and adjusted through a range of
100% (no attenuation) to 0% (maximum [98 dB] attenuation). The audio level can
be adjusted from the front panel or under RS-232 or Ethernet control.
1.
2.
3.
4.
5.
N •
Reading the displayed volume
N This section is a detailed look at reading the displayed output volume display.
There are 65 steps of volume attenuation, with 1 dB per step (button push),
except for 0-to-1, which is 35 dB. At maximum attenuation, no input LEDs are
lit, 98 dB of attenuation is applied, and the audio output is effectively muted. At
no attenuation, all input LEDs are lit and the output volume is equal to the input
signal plus any gain or attenuation that is applied to that specifi c input using the
input audio level adjustment. See Viewing and adjusting the input audio level.
See the table on the next page to read the volume display for each display scheme.
The input LEDs light sequentially to indicate the approximate volume of the
selected output. Volume is defi ned as a percentage of the input audio signal that
is applied to the output. From 0% of volume, the fi rst Esc (
5.5% of the input audio signal and the Input 1 LED begins to blink slowly. From
5.5% on, each Esc (
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MPX 866 A Media Presentation Matrix Switcher • Operation
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CAMBOARD Electronics
Press the Esc button to clear any input LEDs, output LEDs, or control LEDs
that may be lit.
To enter Audio mode, press and hold the Audio button until the LED begins to
blink, then release the button.
Press and release an output button to select an output. The input LEDs
display the volume level for the selected output. The more buttons that are lit,
the higher the volume. The fewer buttons that are lit, the lower the volume.
For a more detailed analysis of decoding the displayed value, see Reading the
displayed volume, below.
Press and release the View (
the audio volume.
Press and release the Audio button to save the audio settings and exit the
Audio mode. The Audio LED stops blinking.
There is one audio volume level setting per output. The audio level setting is
shared by the left and right audio inputs.
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The audio volume levels are stored in non-volatile memory. When power is
removed and restored, the audio level settings are retained.
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Exiting Audio mode by pressing the Audio button always returns the I/O
LEDs to the Video and Audio lit (video and audio selected for confi guration).
•
Pressing the Enter or Preset button also exits Audio mode. Pressing the
Preset button changes to Recall Preset mode.
If you do not need to read the exact value of the volume setting, skip this section.
>
) push applies 1.5% more of the input audio signal to the output:
>
Push Esc (
) button — 5.5% + 1.5% = 7% volume, indicated by the
Input 1 LED continuing to blink slowly.
>
Push Esc (
) button twice — 7% + 1.5% + 1.5% = 10% volume, indicated by
the Input 1 LED blinking fast.
>
Push Esc (
) button nineteen times — 10% + (19•1.5%) = 38.5% volume,
indicated by the Input 1 through Input 4 LEDs lit steadily.
Tel. 07131 911201
Fax 07131 911203
<
>
) and Esc (
) buttons to increase and decrease
>
) button push applies
ce-info@camboard.de
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