Miranda SDM-771p Bedienungsanleitung

SDM-771P/75/110

Radio Frequency Interference and Immunity

This unit generates, uses, and can radiate radio frequency energy. If the unit

is not properly installed and used in accordance with this guide, it may cause

interference with radio communications. Operation with non-certified periph-

eral devices is likely to result in interference with radio and television recep-

tion. This equipment has been tested and complies with the limits in accor-

dance with the specifications in:

-FCC Part 15, Subpart B

-CE EN50081-1:1992

-CE EN50082-1:1992.

How to contact us:

For technical assistance, please contact the Miranda Technical Support cen-

tre nearest you:

Americas Asia

Telephone: Telephone:

+1-800-224-7882 +81-3-5730-2987

e-mail: e-mail:

[email protected] [email protected]

Europe, Middle East, Africa, UK France (only)

Telephone: Telephone:

+44 (0) 1491 820222 +33 (0) 1 55 86 87 88

e-mail: e-mail:

[email protected] [email protected]

Visit our web site at www.miranda.com

Guide to Installation and Operation

Contents

page

1 SDM-771p AES/EBU Digital to Analog Converter....1

1.1 Introduction...............................................................1

1.2 Features....................................................................1

2 Overall View................................................................... 2

3 Installation......................................................................4

3.1 Power Supply............................................................4

3.2 AES Input................................................................. 4

3.3 Analog Output...........................................................5

4 Operation........................................................................ 6

4.1 Configuring the Switches..........................................6

4.2 Indicating the Status of the AES-EBU Carrier.......... 6

5 Specifications................................................................8

Guide to Installation and Operation

1 SDM-771p AES/EBU Digital to Analog Converter

1.1 Introduction

This picoLink module is a 24-bit digital-to-audio converter.

It converts AES/EBU or SP-Dif signals into analog stereo signals.

It has three output levels to optimize the dynamics of the analog

circuit.

A de-emphasis stage in 50/15 µs (48 or 44.1 kHz) format accu

rately restores the signal when it has been emphasized.

This module is available in two versions, depending on the stan

dard selected:

SDM-771p/110: symmetric AES3 110 Ω / XLR input

SDM-771p/75: asymmetric AES3-id 75 Ω

or SP-Dif / BNC input

Figure 1 Functional Block Diagram

1.2 Features

-AES3 110 Ωor AES3-id 75 Ωinput

-Stereo analog output

-Adjustable output level

-De-emphasis: 50-15 µs

2 Overall view

The figures below represents the SDM-771P/75 and the SDM-

771P/110. The input is connected to the BNC socket over 75 Ω

and to a three-point XLR connector over 110 Ω.

A multicolor LED indicates the status of the AES-EBU carrier. A

mini DE-EMPH switch is used to configure the de-emphasis cir-

cuit. The output level can be adjusted using the two mini LEFT

and RIGHT three-position switches.

Power is provided via the power connector

Figure 2.1 SDM-771p, 75 ΩVersion

SDM-771P/75/110

Guide to Installation and Operation

Figure 2.2 SDM-771p, 110 ΩVersion

SDM-771P/75/110

3 Installation

3.1 Power Supply

The power supplies LKS-WSA and LKS-WSE, for 110V and 220V

operation respectively, are used to power the SDM-771p/75/110.

Each power supply provides a regulated +5VDC@750mA power

source. Plug the power supply into a wall or power bar outlet.

The SDM-771p uses a mini XLR-3 connector for its power needs;

figure 3.1 provides a detailed pinout of the male connector.

Figure 3.1 Power connector pinout

3.2 AES Input

SDM-771p/75:

BNC socket: Connect an asymmetricAES 75 Ωsignal to an AES

IN BNC connector. This signal must comply with the AES3-id or

SPDif standard.

SDM-771p/110:

Three-point female XLR connector: Connect a symmetric AES-

110 Ωsignal to an AES IN connector (refer to figure 3.2 for con-

nector pinout). This signal must comply with the AES3 standard

(professional or consumer).

+5VDC

GND

Shield

Guide to Installation and Operation

Figure 3.2 Female XLR connector pinout

3.3 Analog Output

SDM-771p/75 & SDM-771p/110:

Refer to the Configuration section to set the signal output level

and the de-emphasis type.

Figure 3.3 Male XLR connector pinout

GND

Signal _

Signal +

Signal _

GND

SDM-771P/75/110

4 Operation

4.1 Configuring the switches

Figure 5 Switch Location

Level Switches

The level of each stereo output can be set using the two three-

position LEFT & RIGHT switches

+24 0 dBFS = +24 dBu

+22 0 dBFS = +22 dBu

+20 0 dBFS = +20 dBu

De-emphasis Switch

De-emphasis (50-15 µs) is available for signals sampled at fre-

quencies of 44.1k or 48k. The three-position DE-EMPH switch

can be used to select the customized mode of operation. This

selection is valid for both channels.

4.2 Indicating Status of the AES-EBU Carrier

A multicolored LED, located beside the output cord, indicates the

status of the carrier by changing color.

Configuring the left output level

Configuring the right output level

Configuring de-emphasis

Position

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