Dolby Laboratories DM100 Manual de usuario descargar pdf (Pagina 52)

Dolby

DM100 User’s Manual Operation: Setup Mode

4-4

4.2 Gen Control

The Gen Control menu contains all of the settings for the

bitstream generator. After pressing [Enter] to select the

Generator Control menu, press the [Down] or [Up] button to

choose the desired setting:

Output Mode switches the generator on or off, either passing

through the input signal to the output connectors or connecting

the generated signal to the output connectors. It also sets the unit

to latency measurement or A/V frequency drift measurement

modes.

Gen Stream Sel selects the generator output stream from a list

of Dolby E, Dolby Digital, and PCM streams.

PCM Waveform contains the settings for the PCM generator

signal, allowing sine, square, sweep, and pink or white noise

signals to be created.

DE Offset allows the Dolby E bitstream to be placed a number

of lines away from the video sync point (a valid video reference

input is needed for this function).

DD Ch Mode chooses where to place a Dolby Digital stream in

the output AES3 stream (Channel 1+2 is the usual setting).

When measuring the latency of external equipment, the Noise

Burst Rate function sets the frequency of the short noise bursts.

See Section 2.7 for more information. The larger the setting, the

less frequently the noise bursts are generated, and the larger the

latencies that may be measured. However, larger settings

increase the time taken to make each measurement.

New bitstreams may be uploaded to the DM100 using the

Upload Bitstream function. To load and store new streams,

connect a Windows

PC to the DM100 using the supplied cable.

The baud rate is fixed at 115.2 kbps. Activate the Upload

Bitstream function on the DM100 and follow the prompts on the

PC software supplied. During the upload, the DM100 display

will show progress. When complete, reboot using the [Esc] key.

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Dolby Laboratories DM100 Manual de usuario Pagina 52