Kramer VA-256XL User manual

Kramer Electronics, Ltd.
USER MANUAL
Model:
VA-256xl
Audio Delay

Contents
i
Contents
1 Introduction 1
2 Getting Started 1
2.1 Quick Start 1
3 Overview 3
4 Your VA-256xl Audio Delay 4
5 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
6 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
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
1
, 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
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
3
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
2
1
s-Video
Source
AUDIOIN
VIDEOIN
VIDEOOUT
Plasma
Display
AUDIOOUT
1
2
2
Receiver

Overview
3
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
1
 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
2
.
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
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
1
Press to decrease the delay time
2
5 DELAY CONTROL + Button
1
Press to increase the delay time
2
6 DELAY (mSEC) 7-segment Display Displays the delay time
3
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
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
G
R
L
Figure 2: Connecting the VA-256xl Audio Delay

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Using the VA-256xl Audio Delay
6
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
7
5.2 Setting the Delay Time
Set the delay time via the and + buttons
1
. 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
.
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
8
6 Technical Specifications
Table 2 includes the technical specifications:
Table 2: Technical Specifications
1
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