Dolby Laboratories P/N 91659 manual Input Subcode Status Bits, Test Tone Generation, Audio Bit

DolbyRemote Installation and Operation Dolby Digital Parameters

Audio Bit

Audio Bit allows you to set the audio bit in the output bitstream as either audio or non-audio, data. Certain AES/EBU inputs may require this to be set to audio before they will record the encoded bitstream.

Multiplex Mode

Multiplex Mode allows multiple encoded bitstreams to be combined into the main digital output bitstream. When enabled, an internally encoded or pre-encoded Dolby Digital bitstream is multiplexed with other pre-encoded bitstreams contained within the reference-input signal.

The reference input signal is used as the reference bitstream for the multiplexing operation. The resulting output bitstream will be a copy of the reference bitstream with the internally encoded or passed-through bitstream added to it.

When Multiplex Mode is active, the DP567/9 overwrites the contents of the channel selected by the Output format. If the reference input contains a PCM signal, the DP567/9 overwrites the selected output channel with the internally encoded or pre- encoded bitstream but passes through the reference PCM signal on the opposite channel without modification.

Autodetect and Pass Through modes are allowed when Multiplex Mode is active. The following options should be selected in order to enable Multiplex Mode:

•The Reference Input must be selected as the Clock Source.

•Time Code Control must be disabled.

•The Output format must be set to either Pro 16-bit Ch 1 or Pro 16-bit Ch 2.

•Any bitstreams detected in the Reference Input must have been encoded in the Pro 16-bitmode, and cannot be present in the same channel selected by the output format.

Include Time Code Packets

Include Time Code Packets determines whether the encoded output bitstream contains the associated time code information packets.

4.5.3Input Subcode Status Bits

Input Subcode Status Bits show the format, sample rate, emphasis and audio bit as indicated in the subcode of the digital input signal.

4.5.4Test Tone Generation

Test Tone activates an internally generated test signal as the input to the encoding process rather than the currently selected input signal. Enabling the Test Tone mode

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