Open the HTML5 Toolbox Web-GUI and click Inputs to display the Inputs panel.
Adjusting Audio Levels
To adjust input audio levels, click on the input slider and drag it to the desired input gain level. Alternatively, click the arrows below a PPM meter to incrementally increase or decrease the input level in 0.5dB steps. Input levels on the Input panel should be set to ensure audio peaks average at the first yellow indications on the PPM meters, which represents nominal 0 VU at -18dBFS. Audio levels should also be verified using the meters in the PPMs panel.
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Important Notes: •There is a maximum of 6dB of additional gain available when adjusting a digital input. •Turn off all unused inputs to avoid additional noise in program audio. |
Changing the Input PPM Meter Scale from dBFS to dBU
It is also possible to switch the input PPM meter scale from dBFS (default) to dBU:
1.Open the HTML5 Toolbox Web-GUI and click Settings in the Menu Bar, then click Options to display the Options panel.
2.Click the Edit button to configure settings.
3.Click the Analog Inputs PPM Scale drop-down menu and select dBU.
4.Click Save to change the setting.
For more information on reference scales see General Audio Settings. For more information on input levels and input settings see ViA Input Levels and Input Settings. For more info on PPM meters see PPM Meters and Analog Audio Outputs.
Configuring Input Settings
Select Analog and Digital Input Type
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VOLTAGE WARNING: DO NOT attach non-digital microphones or an AES3 source to input 1 when AES42 input mode is selected, or equipment may be damaged by high voltages supplied in this mode. See Configuring AES3 and AES42 Input Audio for more info. |
The following input type settings are available for each input on the codec:
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Input Type Options |
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Input |
Analog |
AES3 |
AES42 |
S/PDIF |
USB |
1 |
Input 1 |
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2 |
Input 2 |
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3 |
Input 3 |
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4 |
Phone |
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5 |
Auxiliary input 1 |
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6 |
Auxiliary input 2 |
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Important Note: When the auxiliary input (AUX IN) is On the default mixer configuration routes audio to the encoders and analog OUTPUT 1 and 2. If you are not using the auxiliary input ensure it is Off to avoid additional noise in program audio. |
Codec inputs 1-3 and the stereo auxiliary input are configured for analog audio by default. To reconfigure the input type:
1.Click the Input Settings 
symbol.
2.Select Type and choose your preferred option from Analog, AES3, AES42, S/PDIF and USB. Note: refer to the previous table for supported input types on each input.
3.Click Save to confirm changes.
Select Input Gain
The default analog input gain setting for inputs 1-3 is Medium Microphone Gain. The stereo auxiliary input is a line level input when operating in analog mode. To adjust input gain settings:
1.Click the Input Settings symbol on the input you want to adjust.
2.Click the Gain drop-down arrow to view menu items and click to select the preferred option.
3.Click Save to confirm the change.
Intelligent Gain Control (IGC)
1.Click the Input Settings symbol on the input you want to adjust.
2.Click the IGC (Intelligent Gain Control) drop-down arrow and select Auto, Fixed or Off as required.
3.Click Save to confirm the change.
Phantom Power
Phantom power can be enabled or disabled when inputs 1-3 are in analog mic level input mode (default setting disabled). Phantom power of 10V or 48V is supplied to all inputs when enabled. The default setting is 10V and the currently configured voltage is displayed in brackets in the Phantom power menu via Home screen, then tap Audio 
> Inputs 
> [tap to select an input] > Phantom Power. See General Audio Settings to change the voltage setting and default on-screen warnings, or click the Options symbol in the top right-hand corner of the Inputs panel to view these options.
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VOLTAGE WARNING: Check the specifications of all microphones attached to the codec to ensure they will not be damaged by either 10V or 48V phantom power supplied by the codec inputs. |
1.Click the Input Settings symbol on the input you want to adjust.
2.Click to select the Phantom check-box to enable phantom power on the selected input.
3.Click Save to confirm the change.
On/Off as Cough Button
This feature on Inputs 1-3 allows the ON/OFF button on the codec to be turned into a cough button, whereby an input is turned off while the ON/OFF button is pressed. Each input can be configured independently.
1.Click the Input Settings symbol on the input you want to adjust.
2.Click to select the On/Off as Cough button check-box and enable cough button mode on the selected input.
3.Click Save to confirm the change. Note: The label on the input changes from ON to COUGH when enabled.
Polarity Inverted
Select the Polarity Inverted check-box to invert the polarity of an input.
1.Click the Input Settings symbol on the input you want to adjust.
2.Click to select the Polarity Inverted check-box and reverse the phase of the selected input.
3.Click Save to confirm the change.
Renaming Inputs
1.Click the Input Settings symbol on the input you want to rename.
2.Click in the Name text box to enter a new name, or edit an existing name.
3.Click Save to confirm the change.
