Nevion AAV-HD-DMUX-R, AAV-HD-DMUX, AAV-SD-DMUX, AAV-SD-DMUX-R User Manual

Nevion

Nordre Kullerød 1

3241 Sandefjord

Norway

Tel: [phone]

nevion.com

AAV-HD-DMUX(-R)/

AAV-SD-DMUX(-R)

HD/SD analog / digital audio de-embedder

User manual

Rev. H

AAV-HD-DMUX(-R)/ AAV-SD-DMUX(-R) Rev. H

nevion.com | 2

Nevion Support

Nevion Europe
P.O. Box 1020

3204 Sandefjord, Norway
Support phone 1: [phone]
Support phone 2: [phone]

Nevion USA

1600 Emerson Avenue

Oxnard, CA 93033, USA

Toll free North America: [phone]

Outside North America: [phone]

E-mail: [e-mail]

See http://www.nevion.com/support/ for service hours for customer support globally.

Revision history

Current revision of this document is the uppermost in the table below.

Rev.

Repl.

Date

Sign

Change description

H 7 2015-05-25

MB

Template update; DoC removed

7 6 2011-11-22

AJM

Updated the optical receiver specifications

6 5 2011-03-08

AA

Updated Declaration of Conformity.

5 4 2009-07-09

MDH

Removed references to inputs in examples. New DIP
switch routing table. 600 ohm backplane option.

4 3 2009-05-26

MDH

Changed table of signal sources P.12

3 2 2008-12-18

MDH

Changed Dip descriptions

2 1 2008-08-26

MDH

Video input manual mode described. Embedder
audio core diagram changed.

1 0 2008-07-10

NBS

Updated formats to company standard

0 - 2007-06-05

MDH

First revision derived from AV-HD-XMUX manual
rev3

AAV-HD-DMUX(-R)/ AAV-SD-DMUX(-R) Rev. H

nevion.com | 3

Contents

1 Product overview ................................................................................................................ 4

1.1 Audio signal flow ............................................................................................................. 5

1.2 Signal flow ....................................................................................................................... 5

1.3 Data signal ...................................................................................................................... 6

2 Specifications ..................................................................................................................... 7

2.1 Measurement conditions.................................................................................................. 7

2.2 General ........................................................................................................................... 7

2.3 Processing....................................................................................................................... 7

2.4 Inputs .............................................................................................................................. 7

2.5 Outputs ............................................................................................................................ 8

3 Configuration .....................................................................................................................10

3.1 DIP switch and routing ....................................................................................................10

3.2 Other DIP Switches ........................................................................................................12

3.3 GYDA Control .................................................................................................................13

3.4 Data transmission ...........................................................................................................15

4 Connections ................................................................ ......................................................17

4.1 Audio connections DB25 ................................................................................................18

4.2 GPI/Data connections 8P8C Jack ...................................................................................18

5 Operation ..........................................................................................................................19

5.1 Front panel LEDs............................................................................................................19

5.2 GPI alarms .....................................................................................................................19

6 Laser safety precautions ...................................................................................................20

General environmental requirements for Nevion equipment .................................................21

Product Warranty .................................................................................................................22

Appendix A Materials declaration and recycling information .................................................23

AAV-HD-DMUX(-R)/ AAV-SD-DMUX(-R) Rev. H

nevion.com | 4

1 Product overview

The only difference between the AAV-SD-DMUX and the AAV-HD-DMUX is that
the latter can also handle HD SDI video.

The rest of the manual will only refer to the AAV-HD-DMUX.

The AAV-HD-DMUX is a highly integrated audio embedding module in the Flashlink range,
offering simultaneous embedding and de-embedding of audio from a digital HD or SD serial
video signal.

The modules can:

 AAV-HD-DMUX can handle SD and HD digital uncompressed video.
 AAV-SD-DMUX can handle SD digital uncompressed video.
 De-embed and embed all groups of audio.
 Copy or move audio groups without additional delay.
 De-embed 2 AES3 digital audio and non-audio signals.
 De-embed 4 analog audio signals.
 Apply extra audio delay.
 Swap stereo channels.
 Make mono or sum from stereo signals.
 Have optical input.
 Transport asynchronous serial data.
 Generate video and audio signals.
 De-glitch correctly synchronized switched video.

Figure 1: Module overview

The module has two main processing blocks. One processes the video stream and the
packet data, the other processes the audio. The packet processing core forms a group router
which can route embedded audio between groups without any extra delay.

AAV-HD-DMUX(-R)/ AAV-SD-DMUX(-R) Rev. H

nevion.com | 5

The AAV-HD-DMUX audio core is an AES3 stereo audio router. The received embedded
audios are the sources in the router. The embedded output groups and audio outputs are the
destinations. This feature may also be used to perform stereo channel swapping.

Four stereo delay lines are also available in the router with a total combined delay of 1.25s.
Audio processing is possible within each stereo output. The channels may be changed

allowing L/R swapping, mono assignment, summing, MS conversion and phase reversal of
one of the signals.

All embedding and de-embedding is performed with synchronous 48 kHz audio.
The unit may be ordered with optional optical receivers. The optical receiver may be either

the HD single mode PIN or the HD multi mode PIN. Both units will receive both HD and SD
data rates. The module has signal generators for audio and video for test and line up
applications. The internal video generator may be used as a fall-back source that is used if
the both the electrical and the optical input signals fail. This allows uninterrupted
transmission of embedded audio. The user may also configure the module to mute the
outputs if the input signal disappears.

1.1 Audio signal flow

Figure 2: Processing core overview

1.2 Signal flow

Video may be presented on the optical or electrical inputs. The module will switch to the
other input if the module can not lock to a signal. The video is re-clocked and transformed to
parallel video. The parallel video goes into a line buffer which is used to de-glitch the video
when switched on the correct line. No errors are flagged or produced when the video is
switched on the appropriate switching line. All ancillary data, including embedded audio is

AAV-HD-DMUX(-R)/ AAV-SD-DMUX(-R) Rev. H

nevion.com | 6

extracted from the video signal. All the packed data is sent to the group router. The de­embedded audio is sent to the stereo audio cross-point router.

The audio processing is performed on the stereo router outputs.
Four of the router outputs are connected to the four stereo delay lines. The outputs of the

delay lines are connected to four inputs of the stereo audio router.
The audio signal is delayed by a few samples during de-embedding, re-packeting the audio

and audio processing. Signals that pass through the stereo audio router will be delayed by a
small number of samples. The group router outputs from the de-embedders do not introduce
any additional delay as the audio does not require unpacking and re-packing.

The embedder core embeds either re-packeted audio from the stereo router or the existing
de-embedded audio as configured in the group router.

The embedded audio packets are inserted into the video signal together with the control
packets and any other packets that were present in the original video signal. The video is
serialized and output through the cable and laser drivers.

The audio signals are taken from the outputs of the audio router. Outputs 1&2 are sent to the
audio DACs (digital to analog converters) while output 3&4 are sent to the AES outputs 3&4.
AES outputs 1&2 are extra AES outputs which may be fed with the audio data of either
outputs 1&2 or 3&4.

1.3 Data signal

The data signal is transported using the User bits in one of the embedded audio streams.
De- embedded data is output on the RS485 output and data received at the R422 input is
embedded into the output video. The configuration sets the audio source containing the data
signal to de-embed, the data format to be received on the backplane connector and which
output signal to embed data into.

AAV-HD-DMUX(-R)/ AAV-SD-DMUX(-R) Rev. H

nevion.com | 7

2 Specifications

2.1 Measurement conditions

Audio Sampling rate

48 kHz

Analog audio output level setting

+18 dBu = 0dBFS

Ambient temperature

25ºC

2.2 General

Power:

+5V DC 0.72A 3.6W
+/-15V DC 0.02A 0.6W

Control:

DIP switches, GYDA system controller.

Monitoring:

Front panel LEDs, GYDA system controller and GPI.

EDH/CRC processing:

Full. Received flags are updated, new CRCs are
calculated.

Boot time:

1 second.

Digital audio outputs:

Conform to AES3-2003

Video inputs and outputs:

Conform to SMPTE 292M-1998

Data input and output:

Conform to EIA RS-485

2.3 Processing

Video latency is variable due to the de-glitcher but the values below apply when the video
signal is first applied.

Other latency values are maximum values.

2.3.1 SD latencies

Video:

des+4+350+256+2+ser video samples = 45.3us

Audio embedding:

2+1+16 audio samples = 19/48000 = 396us

Audio de-embedding:

4+16+1+29 audio samples = 50/48000 = 1.04ms

Embedding GPI mode:

8+4+32 96kHz samples = 44/96000 = 458us

Embedding UART mode:

32+128+17+16 96kHz samples = 193/96000 = 2.01ms

De-embedding GPI mode:

8+32+8 96kHz samples = 44/96000 = 458us

De-embedding UART mode:

8+32+8 96kHz samples = 48/96000 = 458us

2.3.2 HD latencies

Video:

des+8+1024+1024+3+ser video samples = 27.6us

Audio embedding:

2+1+8 = 11/48000 = 833us

Audio de-embedding:

2+8+1+29 = 40/48000 = 229us

Embedding GPI mode:

8+4+16 96kHz samples = 28/96000 = 292us

Embedding UART mode:

16+128+17+16 96kHz samples = 177/96000 = 1.84ms

De-embedding GPI mode:

4+16+8 96kHz samples = 28/96000 = 292us

De-embedding UART mode:

4+16+8 96kHz samples = 28/96000 = 292us

2.4 Inputs

2.4.1 Electrical video input

AAV-HD-DMUX

Video Data rate:

270Mbps or 1,485Gbps

Video frame rate:

24p, 25i, 30i, 50p or 60p and pull down rates

AAV-SD-DMUX

Video Data rate:

270Mbps