Kramer VA-256XL Manual de usuario

Kramer Electronics, Ltd.

USER MANUAL

Model:

VA-256xl

Audio Delay

Contents

Introduction 1

Getting Started 1

2.1

Quick Start 1

Overview 3

Your VA-256xl Audio Delay 4

Using the VA-256xl Audio Delay 5

5.1

Connecting the Balanced/Unbalanced Stereo Audio Input/Output 6

5.2

Setting the Delay Time 7

5.3

Setting the Display Brightness (Dimmer Setting) Level 7

Technical Specifications 8

Figures

Figure 1: VA-256xl Audio Delay 4

Figure 2: Connecting the VA-256xl Audio Delay 5

Figure 3: Connecting the Balanced Stereo Audio Input/Output 6

Figure 4: Connecting the Unbalanced Stereo Audio Input 6

Figure 5: Connecting the Unbalanced Stereo Audio Output 6

Tables

Table 1: Features and Functions of the VA-256xl Audio Delay 4

Table 2: Technical Specifications of the VA-256xl Audio Delay 8

Introduction

1 Introduction

Welcome to Kramer Electronics (since 1981): a world of unique, creative and

affordable solutions to the infinite range of problems that confront the video,

audio and presentation professional on a daily basis. In recent years, we have

redesigned and upgraded most of our line, making the best even better! Our

500-plus different models now appear in 8 Groups

, which are clearly defined

by function.

Congratulations on purchasing your VA-256xl Audio Delay, which is ideal for

professional audio/video broadcasting and production studios.

The package includes the following items:

 VA-256xl Audio Delay

 Power adapter (12V DC Input)

 This user manual

2 Getting Started

We recommend that you:

 Unpack the equipment carefully and save the original box and packaging

materials for possible future shipment

 Review the contents of this user manual

 Use Kramer high performance high resolution cables

2.1 Quick Start

This Quick start chart summarizes the basic steps when connecting the

VA-256xl:

1 GROUP 1: Distribution Amplifiers; GROUP 2: Video and Audio Switchers, Matrix Switchers and Controllers; GROUP 3:

Video, Audio, VGA/XGA Processors; GROUP 4: Interfaces and Sync Processors; GROUP 5: Twisted Pair Interfaces;

GROUP 6: Accessories and Rack Adapters; GROUP 7: Scan Converters and Scalers; and GROUP 8: Cables and Connectors

2 Download up-to-date Kramer user manuals from the Internet at this URL: http://www.kramerelectronics.com

3 The complete list of Kramer cables is on our Web site at http://www.kramerelectronics.com

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Getting Started

s-Video

Source

AUDIOIN

VIDEOIN

VIDEOOUT

Plasma

Display

AUDIOOUT

Receiver

Overview

3 Overview

The Kramer VA-256xl is a balanced stereo analog audio delay that:

 Lets you adjust for lip sync errors so that the audio delay will match the

video delay

 Provides a delay time, ranging from 1msec up to 5.4 seconds in

increments of 1msec

 Lets you adjust the display brightness

 Recalls the previously set input delay settings and the display brightness

level via its non-volatile memory after powering up

 Is 12VDC fed and is housed in a TOOLS enclosure

To achieve the best performance:

 Connect only good quality connection cables, thus avoiding

interference, deterioration in signal quality due to poor matching,

and elevated noise- levels (often associated with low quality cables)

 Avoid interference from neighboring electrical appliances and position

your Kramer VA-256xl away from moisture, excessive sunlight and dust

Caution – No operator-serviceable parts inside unit.

Warning – Use only the Kramer Electronics input power

wall adapter that is provided with this unit

Warning – Disconnect power and unplug unit from wall

before installing or removing device or servicing unit.

1 An example of a TV broadcasting lip sync error is when the sound is heard before the speaker’s lips move

2 For example: model number AD2512C, part number 2535-000251

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Your VA-256xl Audio Delay

4 Your VA-256xl Audio Delay

Figure 1 and Table 1 define the VA-256xl Audio Delay:

Figure 1: VA-256xl Audio Delay

Table 1: Features and Functions of the VA-256xl Audio Delay

# Feature Function

1 12V DC +12V DC connector for powering the unit

RIGHT2 ANALOG OUTPUT Terminal

Block Connector LEFT

Connect to the analog audio acceptor

RIGHT3 ANALOG INPUT Terminal

Block Connector LEFT

Connect to the analog audio source

4 - Button

Press to decrease the delay time

5 DELAY CONTROL + Button

Press to increase the delay time

6 DELAY (mSEC) 7-segment Display Displays the delay time

7 ON LED Lights when the unit is powered

1 For step-by-step response, press and release these button(s) as required. Press continuously for a quicker response

2 Also used to set the brightness of the display (see section 5.3)

3 Ranging from 1 to 5400msec in increments of 1msec (see section 5.2)

Using the VA-256xl Audio Delay

5 Using the VA-256xl Audio Delay

To adjust a lip sync error (when using a scaler, for example, the Kramer

VP-724xl Seamless Switcher /Scaler), use the VA-256xl, as the example in

Figure 2 illustrates:

1. Connect the VA-256xl, as follows (see section 5.1):

 Connect the audio output of the “s-Video Source” to the YC1

AUDIO IN terminal block connector on the VP-724xl and then

connect the AUDIO OUT terminal block connector of the VP-724xl

to the ANALOG INPUT terminal block connector on the VA-256xl

 Connect the ANALOG OUTPUT terminal block connector on the

VA-256xl to an audio acceptor (for example, a receiver).

2. Connect the 12V DC power adapter to the power socket and connect the

adapter to the mains electricity.

3. Set the DELAY, as section 5.2 describes.

4. If required, set the display brightness (see section 5.3).

Plasma

Display

s-Video

Source

Receiver

Audio connection for the VP-724xl

Figure 2: Connecting the VA-256xl Audio Delay

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Using the VA-256xl Audio Delay

5.1 Connecting the Balanced/Unbalanced Stereo Audio Input/Output

Figure 3 illustrates how to wire a balanced input/output connection:

Figure 3: Connecting the Balanced Stereo Audio Input/Output

Figure 4 illustrates how to wire an unbalanced input connection:

Figure 4: Connecting the Unbalanced Stereo Audio Input

Figure 5 illustrates how to wire an unbalanced output:

Figure 5: Connecting the Unbalanced Stereo Audio Output

Using the VA-256xl Audio Delay

5.2 Setting the Delay Time

Set the delay time via the and + buttons

. The delay time is displayed (in

msec) on the 7-segment display located next to these buttons.

The maximum delay time is 5.4 seconds

The delay time setting is saved in the non-volatile memory.

5.3 Setting the Display Brightness (Dimmer Setting) Level

Use the dimmer settings to modify the brightness of the two input buttons and

the display.

To set the brightness (dimmer setting) level, do the following:

1. Press both the + and buttons continuously for 3 seconds.

The two input buttons and the + and – buttons illuminate.

The 7-segment display shows the brightness level

2. Press the + or button to increase or decrease the brightness level.

The brightness of the four buttons and the display is adjusted accordingly.

The dimmer settings mode time out after 20 seconds and the unit returns to

normal operation.

The dimmer setting is saved in the non-volatile memory.

1 In 1msec steps

2 Ranging from 1 to 100

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Technical Specifications

6 Technical Specifications

Table 2 includes the technical specifications:

Table 2: Technical Specifications

of the VA-256xl Audio Delay

INPUTS: 4dBu / 30kon a detachable terminal block connector

OUTPUTS: 4dBu / 50on a detachable terminal block connector

MAX. INPUT/OUTPUT LEVEL: +12dBu balanced

BANDWIDTH: 20Hz – 20kHz

THD + NOISE: < 0.01%, +4dBu 1kHz

S/N RATIO: >90dB unweighted, +10dBu

A/D and D/A CONVERSION: 48kHz, 24 bit

MINIMUM DELAY: 1msec

MAXIMUM DELAY: 5400msec

POWER SOURCE: 12V DC, 500mA

DIMENSIONS: 12 cm x 7.15 cm x 2.76 cm (4.7" x 2.81" 1.09", W, D, H)

WEIGHT: 0.3 kg (0.67 lbs.) approx.

ACCESSORIES: Power adapter, mounting bracket

OPTIONS: 19” rack adapters: RK-T1, RK-T3

1 Specifications are subject to change without notice

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