pro bel 4429 Technical Manual

Contents

1Introduction

2

2Installation

4

2.1Audio connector pin-out

5

2.2Installing DAC sub-boards

6

3Configuration 8

3.1Setting the operating mode 8

3.2Enabling the audio outputs 9

3.3Setting analogue output levels

10

4Trouble shooting

12

4.1Sample problems and their solutions 12

5Status monitoring 14

6Specification

16

7Ordering information

18

Technical Manual 1

4429SDI Audio Extractor

1 Introduction

The 4429 extracts up to two dual channel digital audio signals embedded in a serial
digital component video signal. The basic card provides AES3 digital audio outputs
in both balanced and unbalanced formats. Up to two optional DAC sub-boards are
available, each providing electronically balanced programme quality analogue
outputs.

The 4429 automatically adjusts to handle audio embedded either continuously or to
SMPTE 272M. Equalised and regenerated copies of the digital video input are also
provided.

The module is designed to fit in the 1050 3U and 1051 1U Pro-Bel ICON modular
product rackframes.

Characteristics of the 4429 module are:

•

extracts two dual channel audio signals from an SDI input

•

balanced and unbalanced AES3 outputs

• high quality analogue outputs with one or two stereo DACs per module

•

handles synchronous or asynchronous embedded audio

• compatible with COSMOS, Pro-Bel status monitoring

2

chapter 1 Issue 1

4429

DC power and
status data

SDI with

embedded audio

SDI VIdeo with

embedded audio

buffered and reclocked

DIGITAL

AUDIO

EXTRACTOR

POWER

REG

STATUS

MON

REGEN­ERATOR

OUTPUT
DRIVER

Optional DAC

Optional DAC

Two AES 3 serial
digital audio outputs

Analogue
audio outputs

Left 1

Left 2

Right 1

Right 2

AES 1

AES 2

The 4429 SDI Audio Extractor

The 4429 module extracts digital audio signals embedded in a video signal fully
meeting the SMPTE 272M standard or the slightly different continuous format used
by Sony Betacam equipment. The module can extract any one of the four groups,
that is channels 1-4, 5-8, 9-12 or 13-16, but not combinations.

Technical Manual

chapter 1

3

4429SDI Audio Extractor

2 Installation

The audio extractor consists of a 4429 ICON module which uses the 30mm K4421.3
rear connector. There are five BNC connections for signal I/O and one 25 way ‘D’ type
female socket for the AES/EBU and analogue audio output. The 30mm rear
connector requires three slots in a 3U 1050 ICON frame and one module position in
the 1U 1051 ICON frame.

4

chapter 2 Issue 1

4429

AES OUT

SDI OUT

SDI

IN

AUDIO

K4421
(29)-3

SDI OUT

AES OUT

POWER

P

+12V

+5V

+15V

-15V

0V

REMOTE

LOCK 1
LOCK 2

4429

ADC 1

2

10

INIT

RA1
RA2

AD

VD

ER
RESET

TP14

TP5

TP6

TP7
TP4

LEFT

RV2

RIGHT

RV1

5635

P

LOCAL
REMOTE

Note: Please refer to the frame manual section for

module and rear connector installation assistance.

2.1Audio connector pin-out

Technical Manual

chapter 2

5

4429SDI Audio Extractor

Audio output connector

25 way ‘D’ female socket

PinFunction

1

Analogue 1 - (AES 1A)

2

Analogue 1+ (AES 1A)

3

GROUND

4

Analogue 3 - (AES 2A)

5

Analogue 3+ (AES 2A)

6

GROUND

7

N/C

8

GROUND

9

N/C

10

N/C

11

GROUND

12

N/C

13

N/C

14

Analogue 2- (AES 1B)

15

Analogue 2+ (AES 1B)

16

GROUND

17

Analogue 4- (AES 2B)

18

Analogue 4+ (AES 2B)

19

N/C

20

GROUND

21

AES1-

22

AES1+

23

GROUND

24

AES2-

25

AES2+

2.2Installing DAC sub-boards

One or two 5635 DAC sub-boards can be fitted to the standard 4429 extractor at any
time to provide analogue audio outputs. DAC 1 provides analogue versions of the
first stereo pair, whilst DAC2 provides analogue versions of the second audio pair
from the selected group.

The converter should only fit one way round into the 4429 base module, since the
two header plugs are of slightly different sizes.

Proceed as follows:

• remove the 4429 base module from the frame

•

fit the converter(s) as shown in the diagram, taking care to line up the pins with
the base board headers

•

push the converter gently into its sockets, taking care not to bend any pins

•

re-insert the module into the frame

Note: Removal and insertion of the 4429 module may be done with the frame
powered

Note: In this drawing the silkscreen writing on the 5635 ADC sub-board is shown the
right way up for clarity. The actual board may have inverted text.

6

chapter 2 Issue 1

4429

Fitting a 5635 DAC sub-board

POWER

P

+12V

+5V

+15V

-15V
0V

REMOTE

LOCK 1
LOCK 2

4429

ADC 1

2

10

INIT

RA1

RA2

AD

VD

ER

RESET

TP14
TP5

TP6
TP7
TP4

LEFT

RV2

RIGHT

RV1

5635

P

LOCAL
REMOTE

LEFT

RV2

RIGHT

RV1

5635

P

11 pin connector12 pin connector