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Audio generation and routing, Audio generators, Support for analog and digital audio – Ensemble Designs 9400 3G Test Signal and Sync Pulse Generator User Manual

Page 15: Audio embedded in the sdi outputs

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Avenue 7400 and 9400 - Page 15

Model 7400 HD/SD and Model 9400 3G/HD/SD Sync Pulse Generator and Test Signal Generator

To User Out 2 Source Selector

7400

/9400 SPG/TSG

Audio Generation

and Routing

Tone

Generator

300 Hz

400 Hz

500 Hz

600 Hz

800 Hz

1

.0 KHz

1.2 KHz

1.6 KHz

Silence

TSG Audio

Timecode

Note: DDR2 and AES sources could be

constrained to a single choice, where Left

would always map to an odd channel,

and right to an even channel

Channel Source Selector

typical of 16 places

Ch 1/2

Ch 3/4

Ch 5/6

Ch 7/8

Ch 9/10

Ch 11/12

Ch 1

3/14

Ch 15/16

Channel

Pairing

External

AES

Input

Left/Ch 1

Right/Ch 2

WorkClock

Aligned

DDR2

Audio

Playback

Left/Ch 1

Right/Ch 2

8 Channel Pairs

Audio Pair Selector

typical of 3places

Shaped LTC

from

Timecode

Generator

LTC

AES

Encoder

AES

Encoder

Analog Audio

Output Trim

To User Out 3 Source Selector

To Analog Output Port

Note: Explicit source of Silence provides ability

to deliver AES Silence (DARS) on output BNCs

without requiring a silent pair in the embedded service.

Video from TSG

Group 1

Embedder

Ch 1:4

Group 2

Embedder

Ch 5:8

Group 3

Embedder

Ch 9:12

Group 4

Embedder

Ch 13:16

To Serializer

Enable

Enable

Enable

Enable

This drawing depicts the Audio Signal Generation and routing for

a single SPG/TSG Generator. Each of the two generators on the 7400

and 9400 are identical, with completely independent controls.

TM

Audio Generation and Routing

Audio Generators

The diagram shown below depicts the audio signal generation and routing for a single SPG/TSG

Generator. There are two generators on each 7400 or 9400, Generator A and Generator B. Each of the

two generators on the module are identical, with completely independent controls.

Support for Analog and Digital Audio

The AES digital audio outputs are always synchronous with all of the video outputs – regardless

of format – because all of the video outputs can be locked to a common time base. Multiple tone

generators can be used to identify multi-channel content.

Sixteen Independently Programmable Audio Channels Per Generator

Each generator supports sixteen audio channels and the content of each channel is independently

programmable. Choices include adjustable frequency tone generators, tone sweeps, silence, timecode,

audio clip playback from the 7400 or 9400’s secure digital card, and the external AES input. Left/Right

channel ID that synchronizes to the cyclops feature can also be selected.

Audio Embedded in the SDI Outputs

All sixteen of these channels can be embedded in the SDI outputs. Each AES output can select from

any of the eight pairs that make up these sixteen channels. Similarly, the stereo analog output of each

generator can be driven from any of these audio signal pairs.

7400 and 9400 Audio Generation and Routing Diagram, portrait view

This manual is related to the following products: