Evertz 500DA2Q-AESU Manual de usuario

Frame Manual

500DA2Q-AESU Dual Unbalanced AES Audio Distribution Amplifier

Revision 1.2

TABLE OF CONTENTS

1. OVERVIEW.........................................................................................................................................1

2. INSTALLATION..................................................................................................................................2

3. SPECIFICATIONS..............................................................................................................................3

3.1. AES AUDIO INPUTS.................................................................................................................3

3.2. AES AUDIO OUTPUTS.............................................................................................................3

3.3. ELECTRICAL ............................................................................................................................3

3.4. PHYSICAL.................................................................................................................................3

4. STATUS LEDS...................................................................................................................................4

5. JUMPERS AND USER ADJUSTMENTS...........................................................................................5

5.1. SELECTING THE DA CONFIGURATION.................................................................................5

5.2. INPUT TERMINATION JUMPERS............................................................................................5

5.3. SELECTING WHETHER LOCAL FAULTS WILL BE MONITORED

BY THE GLOBAL FRAME STATUS.........................................................................................6

Figures

Figure 1-1: 500DA2Q-AESU Block Diagram.......................................................................................................1

Figure 2-1: 500DA2Q-AESU Rear Panel Overlay...............................................................................................2

Figure 5-1: LED and Jumper Locations ..............................................................................................................5

Frame Manual

500DA2Q-AESU Dual Unbalanced AES Audio Distribution Amplifier

Revision 1.2

REVISION HISTORY

REVISION DESCRIPTION DATE

1.0 Original Version Mar 03

1.1 Updated Block Diagram, LED and Jumper information Mar 03

1.2 Fixed formatting and typos Jul 07

Information contained in this manual is believed to be accurate and reliable. However, Evertz assumes no responsibility for the use thereof nor for

the rights of third parties, which may be effected in any way by the use thereof. Any representations in this document concerning performance of

Evertz products are for informational use only and are not warranties of future performance, either express or implied. The only warranty offered by

Evertz in relation to this product is the Evertz standard limited warranty, stated in the sales contract or order confirmation form.

Although every attempt has been made to accurately describe the features, installation and operation of this product in this manual, no warranty is

granted nor liability assumed in relation to any errors or omissions unless specifically undertaken in the Evertz sales contract or order confirmation.

Information contained in this manual is periodically updated and changes will be incorporated into subsequent editions. If you encounter an error,

please notify Evertz Customer Service department. Evertz reserves the right, without notice or liability, to make changes in equipment design or

specifications.

Frame Manual

500DA2Q-AESU Dual Unbalanced AES Audio Distribution Amplifier

Revision 1.2 500DA2Q-AESU - 1

1. OVERVIEW

The 500DA2Q-AESU provides an economical method of distribution for your AES digital audio signals.

The DA’s feature two auto-equalized inputs with four re-clocked outputs each. The module can also be

configured for one input with eight reclocked outputs for applications where a larger numbers of outputs

are required.

The 500DA2Q-AESU is housed in the 500FR Frame that will hold up to 16 modules.

Features:

• Supports SMPTE 276M standard for AES audio on 75 Ωcoax

• 2 independent distribution amplifiers with 4 reclocked outputs provides jitter reduction

• Can be configured as one 8 output distribution amplifier

• Automatic equalization provides extended cable length capabilities

• High impedance or 75 ohm termination on inputs (jumper selectable)

• Card edge indicators for AES present, reclocker rate, and AES validity bit

• Tally output of input error conditions

AES Inputs

(SMPTE 276M) AES Outputs

(SMPTE 276M)

Module Status

Control

Indicators

Input

Coupling

Ω

AES1 Valid

Reclocker1 Rate

AES

Reclocker

48 kHz 44 kHz 32 kHz

Equalizer

AES1

Present

Input

Coupling

Ω

Reclocker2 Rate

AES

Reclocker

48 kHz 44 kHz 32 kHz

Equalizer

AES2

Present

AES2 Valid

Figure 1-1: 500DA2Q-AESU Block Diagram

Frame Manual

500DA2Q-AESU Dual Unbalanced AES Audio Distribution Amplifier

500DA2Q-AESU - 2 Revision 1.2

2. INSTALLATION

The 500DA2Q-AESU comes with a companion rear panel overlay that can be placed over the rear panel

BNC connectors to identify their function. For information on inserting the module into the frame see

section 3 of the 500FR chapter.

Figure 2-1: 500DA2Q-AESU Rear Panel Overlay

IN 1, 2 Input BNC connectors for unbalanced AES audio signals compatible with the SMPTE 276M

standard.

OUT 1 to 4 These four BNC connectors are reclocked unbalanced AES outputs, compatible with the

SMPTE 276M and are associated with input 1

OUT 5 to 8 These four BNC connectors are reclocked unbalanced AES outputs, compatible with the

SMPTE 276M and are normally associated with input 2. They can be configured as additional

outputs associated with input 1.

Frame Manual

500DA2Q-AESU Dual Unbalanced AES Audio Distribution Amplifier

Revision 1.2 500DA2Q-AESU - 3

3. SPECIFICATIONS

3.1. AES AUDIO INPUTS

Number of Inputs: 2

Standard: SMPTE 276M, single ended AES

Connectors: BNC per IEC 169-8

Coupling: Transformer

Signal Level: 1V p-p ±0.1V

Equalization: Automatic 1500m @48KHz with Belden 1694A or equivalent cable

Impedance: 75 Ohms

Return Loss: >25 dB 100 kHz to 6 MHz

Sampling Rate: 32 KHz, 44.1 kHz, 48 kHz and 96 kHz

3.2. AES AUDIO OUTPUTS

Number of Outputs: 4 reclocked outputs per input (normal)

8 outputs from input 1 (jumper selectable)

Standard: SMPTE 276M, single ended AES

Connectors: BNC per IEC 169-8

Signal Level: 1V p-p ±0.1V

Impedance: 75 Ohms unbalanced

Return Loss: >25 dB 100 kHz to 6 MHz

3.3. ELECTRICAL

Voltage: + 12VDC

Power: 1.2 Watts.

3.4. PHYSICAL

Number of slots: 1

Frame Manual

500DA2Q-AESU Dual Unbalanced AES Audio Distribution Amplifier

500DA2Q-AESU - 4 Revision 1.2

4. STATUS LEDS

The 500DA2Q-AESU has twelve LED Status indicators on the front card edge to show operational status

of the card at a glance. Figure 5-1 shows the location of the LEDs.

Two large LEDs on the front of the board indicate the general health of the module:

LOCAL FAULT: This Red LED indicates poor module health and will be On during the absence of a

valid input signal, or if a local input power fault exists (i.e.: a blown fuse). The

LOCAL FAULT indication can also be reported to the frame through the FRAME

STATUS jumper.

MODULE OK: This Green LED indicates good module health. It will be On when a valid input

signal is present, and the board power is good.

There are five small LEDs for each input that indicate the status of the input AES audio.

AES PRESENT: This LED will be On when there is an AES carrier present at the input to the module.

48 kHz: The reclocker is currently locked to 48 kHz

44 kHz: The reclocker is currently locked to 44.1 kHz

32 kHz: The reclocker is currently locked to 32 kHz

AES VBIT This LED indicates the status of the AES validity bit. When the LED is Off it

indicates that the AES sample data is suitable for conversion to an analog audio

signal. When the LED is On it indicates that the AES sample data is carrying data

such as Dolby E and is not suitable for conversion to an analog audio signal.

Frame Manual

500DA2Q-AESU Dual Unbalanced AES Audio Distribution Amplifier

Revision 1.2 500DA2Q-AESU - 5

5. JUMPERS AND USER ADJUSTMENTS

+12V GND

MODULE STATUS

(A)500DA-AES-UB

J1 FRAME STATUS

OFF

HI-ZTERM

AES2 PRESENT

AES2 48 KHZ

AES2 44 KHZ

AES2 32 KHZ

AES2 VBIT

AES1 PRESENT

AES1 48 KHZ

AES1 44 KHZ

AES1 32 KHZ

AES1 VBIT

TERMINATION

HI-ZTERM

TERMINATION

SINGLE 1X8

DUAL 1X4

Figure 5-1: LED and Jumper Locations

5.1. SELECTING THE DA CONFIGURATION

DA CONFIG: To configure the 500DA2Q-AESU for four outputs from Input 1 and four outputs

from Input 2, move the jumper J3 to the DUAL 1x4 position.

To configure the 500DA2Q-AESU for eight outputs from Input 1, move the jumper

J3 to the SINGLE 1x8 position.

5.2. INPUT TERMINATION JUMPERS

The TERMINATION jumpers J5 and J7, located at the rear of the module, determines whether the input

signals will be terminated or not. J5 is for input 1 and J7 is for input 2

TERMINATION When set in the "TERM" position, (default) the input impedance is set to 75 Ohms.

Use this position when the cable stops at this card. It will provide the proper

impedance to eliminate electrical reflections.

If set to "UNTERM", the input will be high impedance. Use this position when the

signal does NOT stop at this card. Install a "T" connector on the INPUT BNC to

"loop" the signal through this card.

"WARNING: Make sure that the final destination of the signal is terminated.

Otherwise, reflections will occur affecting the signal throughout the cable.

Frame Manual

500DA2Q-AESU Dual Unbalanced AES Audio Distribution Amplifier

500DA2Q-AESU - 6 Revision 1.2

5.3. SELECTING WHETHER LOCAL FAULTS WILL BE MONITORED

BY THE GLOBAL FRAME STATUS

The FRAME STATUS jumper J1, located at the front of the module, determines whether local faults (as

shown by the Local Fault indicator) will be connected to the 500FR frame's global status bus.

FRAME STATUS: To monitor faults on this module with the frame status indicators (on the power

supply’s FRAME STATUS LED's and on the Frame's Fault Tally output) install this

jumper in the On position.

When this jumper is installed in the Off position local faults on this module will not

be monitored.

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