
8921ADT Instruction Manual 19
Configuration
The AES 2 output can be set to one of the following output modes:
•C, D (Pass) – the inputs selected for C and D appear at the AES output
unmodified.
•– C, – D (both phase inverted) – the inputs selected for C and D are both
inverted at the AES output.
•– C, D (C Phase Inverted) – the input selected for the C channel is
inverted while the D channel is non-inverted at the AES output.
•C, – D (D Phase Inverted) – the input selected for the C channel is not
inverted while the D channel is inverted at the AES output.
•C + D, (monaural sum) – the inputs selected for the C and D channels
are reduced in level by 6 dB, summed together, and output on both
channels at the AES output.
•C + D, C–D (MD D/E) – will be a – 6 dB mono sum to C and – 6 dB dif-
ference decode/encode to D.
•– (C + D) (C + D to Both and Phase Invert) – the inputs selected for the
C and D channels are reduced in level by 6 dB, summed together,
inverted, and output on both channels at the AES output.
•1 kHz (Tone) – a 1 kHz tone is put on both channels at the AES output
with a – 20 dBFS level.
• 400 Hz (Tone) – a 400 Hz tone is put on both channels at the AES output
with a – 20 dBFS level.
• Silence – digital silence is put on both channels at the AES output.
•C/D ID – C/D identification tone. A 1 kHz continuous tone with a
– 20 dBFS level for 1 second on Ch C followed by a 3 second continuous
tone on the Ch D (keeps repeating).
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