Extron electronics DMP 128 Plus - Page 33

DMP 128 Plus • DSP Configurator Software 25
The Input Gain dialog box provides controls to configure the input gain stage of the input
processing path.
Figure 45. Input Gain Dialog Box
1
Input Name — This name changes to match the default or user defined input name.
2
Gain Fader — Provides up to 80 dB of gain or 18dB of attenuation in 1 dB steps.
Click the fader once and press the <Up Arrow> or <Down Arrow> keys to adjust the
fader up or down in 1 dB steps. Press the <Page Up> or <Page Down> keys to adjust
the fader up or down in 10 dB steps.
3
dBFS Meter — This meter displays the input signal level in dBFS ranging from
-60dBFS to 0dBFS. Once the signal reaches or passes -1dBFS (default) or the clip
threshold defined in the Options dialog box (see Options on page93), the clip box
located at the top of the meter lights red.
4
dBFS Numeric Readout — This read-only text box displays the numerical value of the
input signal level in dBFS.
5
Input Gain Text Field — This text field allows the user to enter a gain or attenuation
value in 0.1 dB steps.
6
Polarity Toggle Button — Inverts the signal polarity of the selected input. When the
button displays the black + symbol on a gray field ( ), the polarity is normal. When the
button displays the black - symbol on a yellow field ( ), the polarity is inverted.
7
Mute Button — Mutes signal at the input stage, preventing it from going any further in
the signal processing chain.
8
Phantom Power Check Box — Provides 48 V phantom power to the selected input
for use with condenser microphones. Available on inputs 1 through 8 only.
9
Source Drop-Down Menu (AT models only) — Selects the input audio source for the
channel. Source options are analog (default) or any of the AT inputs. Input gain range
changes to -24 dB to +18 dB when using AT inputs.
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OK Button — Confirms changes and closes the Input Gain dialog box.
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Cancel Button — Reverts any changes made to the contained parameters back to
their states when the current instance of the Input Gain dialog box was opened and
closes the dialog box.
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Input Gain Help Button — Opens the Mic/Line Input Gain topic in the
DSPConfiguratorHelp file for further assistance in configuring input gain.
figure 45. Input Gain Dialog Box
1
Input Name
7
Mute Button
2
Gain Fader
8
Phantom Power Check Box
3
dBFS Meter
9
Source Drop-Down Menu
4
dBFS Numeric Readout
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OK Button
5
Input Gain Text Field
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Cancel Button
6
Polarity Toggle Button
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Input Gain Help Button