Miranda Dec-291p Bedienungsanleitung

GUIDE TO INSTALLATION AND OPERATION

DEC-291p

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GUIDE TO INSTALLATION AND OPERATION

DEC-291p

CONTENTS

page

1.0 DEC-291p 12-bit NTSC/PAL/SECAM to SDI

decoder…........................................…… 1

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

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

2.0 Physical Layout………….......................... 2

3.0 Installation .......................................... 3

3.1 Power Supply .......................................... 3

3.2 Composite Input ……..……….................. 3

3.3 SDI Output ……………….……............... 3

4.0 Operation ............................................ 4

4.1 Switch Settings ....................................... 4

4.2 Status LED ………………………............... 5

5.0 Specifications ................………..……. 6

GUIDE TO INSTALLATION AND OPERATION

DEC-291p

GUIDE TO INSTALLATION AND OPERATION

DEC-291p | 1

1.0 DEC-291p 12-bit NTSC/PAL/SECAM to SDI

decoder

1.1 Introduction

The Picolink DEC-291p Composite Decoder is the world’s

smallest NTSC/PAL/PAL-N/PAL-M/SECAM decoder, facilitating

the interface between analog composite video and the serial SDI

video signal, particularly in monitoring applications. This module

automatically detects 525 or 625 line formats from incoming

composite video signals and provides the appropriate serial SDI

output format. Its simplified design makes it easy to install and

operate.

DecoderCOMPOSITE IN SDI OUT

Parallel

to serial

Figure 1: DEC-291p functional block diagram

1.2 Features

Automatic input detection of NTSC, PAL and SECAM

composite signals

SDI output

Superior quality 12-bit processing

Input setup selection: 7.5 or 0 IRE

Input signal stability selection: VTR, Tuner (satellite), and

Studio

Bi-color LED providing error status on input composite

signal

Very small packaging with aluminum extruded body

GUIDE TO INSTALLATION AND OPERATION

2| DEC-291p

2.0 Physical Layout

Figure 2 illustrates the DEC-291p’s major parts and their

locations. The video source is connected to the composite input

BNC and the decoded signal is provided by the SDI output.

Error status is provided by the status LED and mode settings are

configured by two 3-position slide switches. Finally, the power

source is connected to the power connector.

SDI output

Power connector

Composite input Status LED

(underneath)

3-position slide switches

Figure 2: Layout of the DEC-291p

GUIDE TO INSTALLATION AND OPERATION

DEC-291p | 3

3.0 Installation

3.1 Power Supply

The LKS-WSU power supply is used to power the DEC-291p for

both 110V and 220V operation. This power supply provides a

regulated +5 VDC@1A power source over an input range of 90 –

260 VAC. The DEC-291p employs a mini XLR-3 connector for its

power needs. Figure 3 shows a detailed pinout of the male

connector.

(male connector-facing)

Pin 1: Shield

Pin 2: GND

Pin 3: +5 VDC

Figure 3: Power connector pinout

3.2 Composite Input

Connect an NTSC, PAL, PAL-M, PAL-N or SECAM composite

signal conforming to the SMPTE 170M or ITU-R BT.470-6

standard respectively to the BNC labeled COMPOSITE IN.

3.3 SDI Output

The SDI serial digital output signal is available at the BNC

labeled SDI OUT. The output signal conforms to the SMPTE

259M-C standard.

GUIDE TO INSTALLATION AND OPERATION

4| DEC-291p

4.0 Operation

4.1 Switch Settings

Figure 4 shows the location of the slide switches and the status

LED.

7.5 IRE

0 IRE

VTR

TUNER

STUDIO

DEC-291p Miranda Technologies inc.

Made in Canada

Input setup (SW1)

Input stability (SW2)

picoLink

COMPOSITE

IN SDI OUT

Status LED

Figure 4: DEC-291p slide switch and LED locations

Input setup switch (SW1)

7.5 IRE: For composite sources with 7.5 IRE setup, set SW1

to this position.

7.5 IRE (same as above on this 3-position switch)

0 IRE: For composite sources with 0 IRE setup, set SW1 to

this position.

Input stability switch (SW2)

VTR: Select this position for non-time-base-corrected

sources.

Tuner: Decoding of satellite sources or sources with

unpredictable voltage levels is improved with the

Tuner setting.

GUIDE TO INSTALLATION AND OPERATION

DEC-291p | 5

Studio: Select this position when using stable composite

sources.

4.2 Status LED

The bi-colored status LED identifies the presence of input errors.

Possible indications are:

Green: Indicates the DEC-291p is powered and has

detected a valid composite signal at the input.

Red: Indicates that the input is in error:

•no input signal has been detected

•an invalid input signal has been detected.

Off: The DEC-291p is not connected to a power supply.

GUIDE TO INSTALLATION AND OPERATION

6| DEC-291p

5.0 Specifications

Input

Signal: NTSC (SMPTE-170M)

PAL (ITU-R BT.470-6),

PAL-M (ITU-R BT.470-6)

PAL-N (ITU-R BT.470-6)

SECAM (ITU-R BT.470-6)

Return loss: > 35 dB up to 5 MHz

Connector: 75 ΩBNC

Output

Signal: SDI SMPTE 259M-C (270 Mbps)

Return loss: > 15 dB up to 270 MHz

Jitter: < 10 ns p-p

Connector: 75 ΩBNC

Processing performance

Signal Path: 10 bit

Quantization: 12 bits

Processing delay: 3.2 us

Sampling: 54MHz (4x oversampling)

Electrical

Voltage requirement: +5 VDC

Power consumption: 1.5 W

Power connector: Mini XLR-3

Mechanical

Overall size: 102 mm x 25 mm x 18 mm

(4” x 1” x 0.7”)

Power cable length: 127 mm (5”)

Full spec. temp. range: 0° C (32° F) to 30° C (86° F)

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