Junger-audio C8840 - Sync interface Manuel d'utilisateur télécharger pdf

C8000

sync interface

C8840

digital audio

modular

processing system

1/8

features

• Standard sync module for a C8000 frame

• Internal sync @ 44.1 / 48 / 88.2 / 96kHz

• External sync auto format sensing : AES, Word Clock, Video Reference

• Video Reference :

Black Burst (NTSC or PAL)

Composite Sync (525 or 625)

Tri Level Sync (HD - 720p, 1080i, 1080p)

• Generates a Dolby-E frame sync reference that can be shifted in respect to

the defined video switching point

• Two fully redundant sync inputs

• Synchronous Word Clock output

• Front panel status indicator

• Front panel Lock A, Lock B indicator

The C8840 as the heart of a C8000 system. It synchronizes the backplane audio transport to maintain

glitch free hand over of serial audio data between the various I/O and processing modules.

For redundant operation it offers two inputs with automatic switch over. This allows the system integrator

to design a fail over system with independent feeds which may even have different reference formats

(E.g. BB and AES sync).

For Dolby E encoding inside a C8000 frame a frame sync pulse (AKA frame reference) is necessary.

The C8840 extracts such frame sync pulse from the input video reference. A circuit is provided to move

the edge of that reference in respect to the input video frame. I.e. one may align a Dolby E encoded signal

by the accuracy of a video line to the reference switching point.

If no video reference is connected the frame sync pulse will be generated from the internal sync source.

For non video applications like CD mastering or high resolution audio production the C8840 may be

synchronized to audio sample rates of 44.1, 88.21 or 96kHz. Pls. keep in mind that those sample rates

can not be used for SDI (Serial Digital Video) embedding / de-embedding.

The C8840 measures the input format and displays it via the Web GUI status display of the module.

In case of a severe sync problem, the Frame Controller can send a SNMP trap and / or activate a SNMP

GPO. A higher-ranking monitoring system may poll the status of the sync module(s) via SNMP.

Finally there is the feature to set the sync source via presets loaded by a GPI

and to get a GPO for the selected source.

1 2 3 4 5 6 7 8

ON DIP 3

Résumé du contenu

Page 1

C8000 sync interface C8840 digital audio modular processing system 1/8 features • Standard sync module for a C8000 frame • Internal sync @ 44.1

Page 2

C8000 sync interface C8840 digital audio modular processing system 2/8 technical specifications Internal sync : 44.1, 48, 88.2, 96kHz SYNC A IN

Page 3 - ON DIP

C8000 sync interface C8840 digital audio modular processing system 3/8 installation The C8000 frame must be switched off for installation or swapp

Page 4

C8000 sync interface C8840 digital audio modular processing system 4/8 Setting the CAN address for special applications : In standard applications

Page 5

C8000 sync interface C8840 digital audio modular processing system 5/8 operation Click on the spanner tool of the graphical box of a C8840 in the

Page 6

C8000 sync interface C8840 digital audio modular processing system 6/8 DEVICE Device Name you can assign the module a name (up to 16 digits) and

Page 7

C8000 sync interface C8840 digital audio modular processing system 7/8 PARAMETERS Connect a clock source with SYNC A IN and an other one with SYNC

Page 8

C8000 sync interface C8840 digital audio modular processing system 8/8 GPI/O GPIs are useful if you want to recall settings remotely (e.g. by pr

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Junger-audio C8840 - Sync interface Manuel d'utilisateur

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