Nevion AV-HD-XMUX User Manual

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

AV-SD-XMUX (-T/R)

HD/SD digital audio embedders and de-embedders

User manual

Rev. L

Nevion

Nordre Kullerød 1
3241 Sandefjord
Norway
Tel: [phone]

nevion.com

AV-HD-XMUX (-T/R) / AV-SD-XMUX (-T/R) Rev. L

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.

Rev.

Repl.

Date

Sign

Change description

L

11

2015-05-27

MB

Template update; DoC removed

10 9 2011-11-22

AJM,
MDH

Updated optical specifications. Added references to
audio transport mode. Removed references to the
AV-HD-XMUX-C3

9 8 2009-03-30

NBS

Corrected minimum optical input specification. New
front page.

8 7 2008-03-28

NBS

Changed GPI connector figure.

7 6 2008-02-15

MDH

Inserted AV-HD-XMUX-C3 backplane.

6 5 2008-02-13

NBS

Corrected description of AV-HD-XMUX-C2.

5 4 2007-10-30

NBS

Corrected Chapter 2.4.2 (PIN diode description).

4 3 2007-10-30

NBS

Changed matrix in Chapter 3.1.2 and added
description of Dip positions in Chapter 3.1.3.

3 2 2007-04-10

MDH

Generator controls in firmware vn.5. Audio delay line
section. References to AV-SD-XMUX.

2 1 2006-09-08

MDH

Group router switching, video input switching,
latency specifications, new generator functionality.

1 0 2006-02-14

MDH

Introduction bullets. Routing DIP switch table.

0 - 2006-02-01

MDH

Revised specifications.

Nevion Support

Revision history

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

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AV-HD-XMUX (-T/R) / AV-SD-XMUX (-T/R) Rev. L

Contents

1 Product overview ..................................................................................................... 5

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

1.2 Signal flow ....................................................................................................................... 7

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

1.4 Video reference ............................................................................................................... 7

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

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

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

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

2.3.1 SD latencies ................................................................................................................. 8

2.3.2 HD latencies ................................................................................................................. 8

2.4 Inputs .............................................................................................................................. 9

2.4.1 Electrical video input ..................................................................................................... 9

2.4.2 Optical video input ........................................................................................................ 9

2.4.3 Audio Inputs ................................................................................................................. 9

2.4.4 Data inputs ..................................................................................................................10

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

2.5.1 Electrical video output..................................................................................................10

2.5.2 Optical video output .....................................................................................................10

2.5.3 Audio outputs ..............................................................................................................10

2.5.4 Data outputs ................................................................................................................11

2.5.5 GPI outputs .................................................................................................................11

3 Configuration ......................................................................................................... 12

3.1 DIP switch routing...........................................................................................................12

3.1.1 Destinations .................................................................................................................12

3.1.2 Sources .......................................................................................................................13

3.1.3 Examples.....................................................................................................................13

3.2 Other DIP Switches ........................................................................................................14

3.2.1 Non-SRC mode, SW1.7 ...............................................................................................14

3.2.2 Load DIP Configuration, SW1.8 ...................................................................................14

3.2.3 LED mode, SW2.7 .......................................................................................................15

3.2.4 EDH insert, SW2.8 ......................................................................................................15

3.2.5 Fallback generator control, SW3.7 ...............................................................................15

3.2.6 20/24 bit (SD), SW3.8 ..................................................................................................15

3.3 GYDA Control .................................................................................................................15

3.3.1 Audio delay lines .........................................................................................................15

3.3.2 Stereo audio processing ..............................................................................................15

3.3.3 RS422 Data port configuration .....................................................................................16

3.3.4 Transport and shuffling of audio groups .......................................................................16

3.3.5 Audio generator ...........................................................................................................16

3.3.6 Video generator ...........................................................................................................16

3.3.7 Video input switching ................................................................ ...................................16

3.4 Data transmission ...........................................................................................................17

3.4.1 Data latencies ..............................................................................................................17

3.4.2 Embedding ..................................................................................................................17

3.4.3 De-embedding .............................................................................................................17

3.4.4 Limitations ...................................................................................................................18

3.5 Audio Transport mode ....................................................................................................18

3.5.1 In-band management...................................................................................................18

3.5.2 Setup ........................................................................................................................... 18

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AV-HD-XMUX (-T/R) / AV-SD-XMUX (-T/R) Rev. L

4 Connections ........................................................................................................... 20

4.1 Summary ........................................................................................................................22

4.2 Audio connections DB25 ................................................................................................22

5 Operation ............................................................................................................... 23

5.1 Front panel LEDs............................................................................................................23

5.2 GPI alarms .....................................................................................................................24

5.2.1 GPI/ Data connections RJ45........................................................................................24

6 Laser safety precautions ........................................................................................ 25

General environmental requirements for Nevion equipment..................................... 26

Product Warranty ...................................................................................................... 27

Appendix A Materials declaration and recycling information..................................... 28

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AV-HD-XMUX (-T/R) / AV-SD-XMUX (-T/R) Rev. L

1 Product overview

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

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

The AV-HD-XMUX is a highly integrated audio embedding module in the Flashlink range,
offering simultaneous embedding and de-embedding of four AES3 stereo digital audio
channels from a digital HD or SD serial video signal.

The modules can:

 AV-HD-XMUX can handle SD and HD digital uncompressed video.
 AV-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 4 AES3 digital audio and non-audio signals.
 Embed 4 AES3 digital audio and non-audio signals.
 Apply sample rate converters when needed.
 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.

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 AV-HD-XMUX audio core is an AES3 audio router. The received embedded audio and
the AES3 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.

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De-embedded

groups

1 2 3 4

Embedded

groups

1
2

3
4

AES

inputs

AES

outputs

Silence

Stereo

tone

Group
matrix

Stereo Matrix

1
2
3
4

1 2 3 4

Delay
1-4

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, which will receive both HD and SD data rates; or SD which has a multimode fiber.

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.

1.1 Audio signal flow

Figure 1: Module overview

Figure 2: Processing core overview

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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 AES audio inputs are initially connected directly to the audio router. Sample rate
converters are inserted if there are sample slips and the signal is not a data signal. 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.

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 AES 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 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.

1.4 Video reference

The input video always has the highest priority. The output video and audio will always be
synchronous to this signal.

AES input 1 will be used as a reference for the internal video generator as long as the
sample rate converter is not active. ( FPGA firmware 1.56 and greater. Contact Support for
upgrade)

The internal generator will run at a frequency close to the last valid signal.

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Audio Sampling rate

48 kHz

Ambient temperature

25ºC

Power:

+5V DC 0.66A 3.3W

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

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

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 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

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 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 Specifications

2.1 Measurement conditions

2.2 General

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

2.3.2 HD latencies

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AV-HD-XMUX (-T/R) / AV-SD-XMUX (-T/R) Rev. L

Video Data rate:

270Mbps or 1,485Gbps

Video frame rate:

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

Video Data rate:

270Mbps

Video frame rate:

50i and pull down 60i rates

Equalization:

Automatic up to 35dB

Impedance:

75 ohm

Return loss:

>15dB up to 1,5GHz

Signal level:

nom. 800mV

Connector:

BNC

Optical wavelength:

1200-1620nm ±40 nm

Maximum Optical power:

-3 dBm.

Minimum Optical power
HD-SDI
SD-SDI

-22 dBm

-25 dBm

Return loss:

Better than 27 dB.

Maximum reflected power:

4%

Transmission circuit fiber:

Single mode (Multi-mode option on request).

Connector:

SC/UPC

Number of AES3 inputs:

4

Audio data rate:

30 kHz to 200 kHz, converted to 48 kHz if not
isochronous to the video input signal.

Impedance (C1 backplanes):

110 ohm transformer balanced.

Connector (C1 backplanes):

25 pin D-sub. (4 Inputs + 4 outputs)

Impedance (C2 backplanes):

75 ohm unbalanced.

Connector (AV-HD-XMUX-C2):

2 x BNC

Connector (AV-MUX-C2):

4 x BNC

Embedded audio word length:

24 bits

Embedded audio Channel status:

As received when isochronous, otherwise fixed.

Sample rate converter dynamic
range:

139 dB(A) @ 1 kHz

2.4 Inputs

2.4.1 Electrical video input

AV-HD-XMUX

AV-SD-XMUX

2.4.2 Optical video input

2.4.3 Audio Inputs

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