Nevion AAV-HD-XMUX-T, AAV-HD-XMUX-R, AAV-SD-XMUX-R, AAV-SD-XMUX-T User Manual

[Type text]

Nevion Europe

P.O. Box 1020, 3204 Sandefjord, Norway – Tel: [phone] – Fax: [phone]

www.nevion.com

AAV-HD-XMUX(-T/R)/

AAV-SD-XMUX(-T/R)

HD/SD analog/digital audio embedder

User manual

Rev. 6

AAV-HD-XMUX(-T/R)/ AAV-SD-XMUX(-T/R) Rev. 6

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

6 5 2011-03-08

AA

Updated Declaration of Conformity.

5 4 2009-06-11

MDH

Added A/D gain setting table, new DIP switch routing
table, 600 ohm backplane option.

4 3 2009-01-06

NBS

Corrected LED descriptions in Chapter 5.1.

3 2 2008-12-18

MDH

Dip switch description corrected

2 1 2008-08-26

MDH

Video input manual mode described. Embedding
core diagram changed. LED chart corrected.

1 0 2008-07-11

NBS

Updated formats to company standard

0 - 2007-06-05

MDH

First revision derived from AV-HD-XMUX manual
rev3

AAV-HD-XMUX(-T/R)/ AAV-SD-XMUX(-T/R) Rev. 6

nevion.com | 3

Contents

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

1.1 Audio signal flow ............................................................................................................. 6

1.2 Signal flow ....................................................................................................................... 6

1.3 Data signal ...................................................................................................................... 7

2 Specifications .......................................................................................................... 8

2.1 Measurement conditions.................................................................................................. 8

2.2 General ........................................................................................................................... 8

2.3 Processing....................................................................................................................... 8

2.4 Inputs .............................................................................................................................. 8

2.5 Outputs ...........................................................................................................................10

3 Configuration ......................................................................................................... 11

3.1 DIP switch Configuration ................................ ................................................................ 11

3.2 GYDA Control .................................................................................................................14

3.3 Data transmission ...........................................................................................................16

4 Connections ........................................................................................................... 18

4.1 Audio connections DB-25 ...............................................................................................19

4.2 GPI/ Data connections 8P8C Modular jack .....................................................................19

5 Operation ............................................................................................................... 20

5.1 Front panel LEDs............................................................................................................20

5.2 GPI alarms .....................................................................................................................21

6 Laser safety precautions ........................................................................................ 22

General environmental requirements for Nevion equipment..................................... 23

Product Warranty ...................................................................................................... 24

Appendix A Materials declaration and recycling information..................................... 25

EC Declaration of Conformity ................................................................ ................... 26

AAV-HD-XMUX(-T/R)/ AAV-SD-XMUX(-T/R) Rev. 6

nevion.com | 4

1 Product overview

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

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

The AAV-HD-XMUX 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-XMUX can handle SD and HD digital uncompressed video.
 AAV-SD-XMUX 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.
 Embed 2 AES3 digital audio and non-audio signals.
 Embed 4 analog audio signals.
 Apply sample rate converters when needed on the AES3 inputs.
 Apply extra audio delay.
 Swap stereo channels.
 Make mono or sum from stereo signals.
 Have optical laser output.
 Have optical input.
 Transport asynchronous serial data.
 Generate video and audio signals.
 De-glitch correctly synchronized switched video.

Figure 1: Module overview

AAV-HD-XMUX(-T/R)/ AAV-SD-XMUX(-T/R) Rev. 6

nevion.com | 5

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.

The AAV-HD-XMUX audio core is an AES3 stereo audio router. The received embedded
audio and the audio inputs are the sources in the router. The embedded output groups and
AES3 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.

There are two embedding modes:

 Non-SRC mode: The AES3 input signals are embedded transparently.
 Automatic mode: The module will use sample rate converters when necessary.

Data signals such as Dolby E will always be embedded transparently without using the
sample rate converters.

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

range from the standard -7.5dBm 1310nm to the CWDM units. The receivers may be either
HD single mode or HD multi mode. 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.

AAV-HD-XMUX(-T/R)/ AAV-SD-XMUX(-T/R) Rev. 6

nevion.com | 6

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
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 analog inputs (Stereo inputs 1 & 2) are always connected directly to the audio router.
The AES audio inputs (Inputs 3 & 4) are initially connected directly to the audio router.

Sample rate converters are inserted if there are sample slips but only if the signals are not
data signals. The sample rate converters may be disabled with DIP switch 1.7.

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.

AAV-HD-XMUX(-T/R)/ AAV-SD-XMUX(-T/R) Rev. 6

nevion.com | 7

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.

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. 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
audio output signal to embed data into.

AAV-HD-XMUX(-T/R)/ AAV-SD-XMUX(-T/R) Rev. 6

nevion.com | 8

2 Specifications

2.1 Measurement conditions

Audio Sampling rate:

48 kHz.

Ambient temperature:

25ºC.

2.2 General

Power:

+5V DC 0.7A 3.5W
+/-15V DC 0.017A 0.5W

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:

1.2 second.

Digital audio inputs and 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:

AES+2+1+16 audio samples=20/48000 = 417us.

Audio de-embedding:

4+16+1 audio samples =21/48000 = 438us.

Embedding data GPI mode:

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

Embedding data UART mode:

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

De-embedding data 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:

AES+2+1+8=12 /48000 = 250us.

Audio de-embedding:

2+8+1=11/48000 = 229us.

Embedding data GPI mode:

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

Embedding data UART mode:

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

De-embedding data 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-XMUX

Video Data rate:

270Mbps or 1,485Gbps.

Video frame rate:

24p, 50i, 60i, 50p or 60p and pull down rates
PsF formats are handled as interlaced formats.

AAV-SD-XMUX

Video Data rate:

270Mbps.

Video frame rate:

50i and pull down 60i rates.

Equalization:

Automatic up to 35dB.