Codec Tieline Gateway User Manual page 41

1. Press the SETTINGS
2. Navigate to Audio Inputs or Audio Outputs and press the
3. Navigate to Type and press the
4. Select Digital and press the
Important Notes:
· There is a maximum of 6dB of additional gain available when adjusting an AES3 digital
input.
· If you switch back to the analog input setting after selecting AES3, the previous analog
settings will be recovered.
AES3 Out Clock Source
The codec contains two sample rate converters.
Input Sample Rate Converter
The codec implements an Asynchronous Sample Rate Converter (ASRC) to convert the sample
rate of an AES3 input to the sample rate set in the codec. The codec sample rate is determined
by the selected algorithm. For example, if you select the Music algorithm, the sample rate will
be set to 32kHz. By default the codec will up-sample all AES3 input sources to 96kHz sampling
and then convert to match the AES output sample rate setting.
Important Note: All AES3 inputs must have the same sample-rates and must be
synchronized to a common clock. See
Output Sample Rate Converter
The sample rate of the AES3 output is configured using the clock source setting via the SETTINGS
button and then Audio Options > AES3 Out Clock Src. This configures the sample rate
frequency of all AES3 output signals.
Wordclock Sync In
This setting configures the codec for a word clock source via the SYNC I/O 2 BNC connector on the
codec rear panel (this is the same as the External Word Clock setting in Tieline G3 codecs).
Often this will be a studio reference signal. In television broadcasting facilities the audio reference
signal should be locked to the video reference if there is one available. The sample rate being
received is recognized by the codec and automatically adjusted. Supported sample rates include 32
kHz, 44.1 kHz, 48 kHz and 96 kHz. Note: The reference clock must be within +/- 50ppm of the
listed sample rates.
Lock to AES3 Input
© Tieline Research Pty. Ltd. 2021
Gateway and Gateway 4 Manual v1.2
button.
button.
button.
Appendix B
button.
for pin-outs of AES3 inputs.
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