Gateway and Gateway 4 Manual v1.5

 

Open the HTML5 Toolbox Web-GUI and click Audio in the Menu Bar, then click Inputs to display the Inputs panel.

 

 

 

Adjusting Audio Input Levels

To adjust input audio levels, click on the input slider and drag it to the desired input gain level. Alternatively, type a value below a PPM meter to increase or decrease the input level value. Note: 0.5dB increments are accepted for increasing and decreasing audio levels. Input levels on the Inputs panel should be set to ensure audio peaks average at the first yellow indications on the PPM meters, which represents nominal 0 VU at -20dBFS. Audio levels should also be verified using the meters in the PPMs panel.

 

 

Changing the Input PPM Meter Units from dBFS to dBU

It is also possible to switch the analog input PPM meter unit of measurement from dBFS (default) to dBU:

 

1.Open the HTML5 Toolbox Web-GUI and click Audio in the Menu Bar, then click Audio Options to display the Audio Options panel, next click Edit.

2.Click the Analog Inputs PPM Units drop-down menu and select dBU, then click Save.

 

Configuring Input Settings

Selecting Analog and Digital Audio Sources

Codec inputs can be configured for AES3, digital (e.g. AES67, ST 2110-30, Livewire+, RAVENNA), or analog line level audio sources. Use the Audio Options panel in the HTML5 Toolbox web-GUI to configure digital inputs globally for either AES3 or AoIP input sources. See Input Configuration, Levels and PPMs for more details. After setting the Digital Input Type in the Options panel, configure the codec for either analog or digital input types using the Inputs panel as follows.

 

1.Click the Input Settings symbol.

2.Select Type and then Analog or Digital (AES3 or Native AoIP Protocols).

 

3.Click Save to confirm the new setting.

Adjusting IGC

Input IGC (Intelligent Gain Control) is enabled by default and is automatically activated at +19 dBu (G6 audio scale), +17 dBu (G5 audio scale) and +13dBu (G3 audio scale) to prevent audio clipping.

 

1.Click the Input Settings symbol.

2.Select IGC (Intelligent Gain Control) and then Auto, Fixed or Off as required.

 

3.Click Save to confirm the new setting.

 

Invert Polarity

Select the Polarity Inverted check-box to reverse the polarity of an analog or digital input.

 

1.Click the Input Settings symbol on the input you want to adjust.

2.Click to select the Polarity inverted check-box.

 

3.Click Save to store the new setting.

 

Renaming Inputs

1.Select the Input Settings symbol on the input being renamed.

2.Click in the Name text box to enter a new name, or edit an existing name.

 

3.Click Save to confirm the name change.

 

Adjust EQ Settings

EQ and compression can be adjusted for each input if required. To enable and adjust the built-in 10 band EQ:

 

1.Click the EQ button for an input in the Inputs panel. The EQ button is blue when input EQ is enabled.

2.Click the drop-down menu arrow and select Graphic to enable EQ for the input if it is in Bypass.

3.Adjust the EQ frequency sliders as required.

 

 

4.Click Save as preset to save an EQ preset, e.g. for a particular announcer. Click View presets to recall a previously stored EQ preset.

5.Click Back to view all inputs.

 

Adjust Compression Settings

To to enable and adjust input compression settings.

 

1.Click the Compressor button for an input in the Inputs panel. The Compressor button is blue when input compression is enabled.

2.Click the drop-down menu arrow and select Enabled to enable compression for the input if it is disabled.

3.Adjust the compression settings as required.

 

 

4.Click Save as preset to save a compressor preset, e.g. for a particular announcer. Click View presets to recall a previously stored compressor preset.

5.Click Back to view all inputs.

 

 

AES3 Output Sample Rate Configuration

The AES3 output sample rate can be configured using the HTML5 Toolbox Web-GUI. See Configuring AES3 Audio for more information about AES3 input and output sample rate clocking.

 

1.Open the HTML5 Toolbox Web-GUI and click Audio in the Menu Bar, then click Audio Options to display the Audio Options panel.

2.Click the AES Output Clock drop-down menu to select your preferred setting, then click Save.

 

Audio Reference Levels

By default, the PPM METERS on the front of the codec, or in the HTML5 Toolbox Web-GUI, use dBFS to express nominal operating, headroom and noise floor levels. The codec can also automatically adapt to different Tieline reference scales. A Tieline codec with proprietary Tieline session data enabled will automatically adjust the reference level to suit G5 and G3 codecs, or Report-IT. When connecting to a non-Tieline codec, or a Tieline codec without session data enabled, the codec will use the Tieline G6 reference scale setting.

 

The default Tieline G6 audio reference scale displayed on the PPMs when connecting to a Tieline G6 codec is -40dBFS to 0dBFS. Using this reference scale audio peaks can safely reach 0dBFS without clipping, providing 20dB of headroom from the nominal 0vu point.

 

 

To adjust this setting:

 

1.Open the HTML5 Toolbox Web-GUI and click Audio in the Menu Bar, then click Audio Options to display the Audio Options panel.

2.Click the Reference Level drop-down menu and select the correct option, then click Save.