Kramer Electronics, Ltd.
USER MANUAL
Model:
VA-256xl
Audio Delay
Contents
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
i
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 Groups1, 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 manual2
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 cables3
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
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Getting Started
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KRAMER: SIMPLE CREATIVE TECHNOLOGY
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 delay1
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 unit2.
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
3
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
ANALOG OUTPUT Terminal
Block Connector
Block Connector
4 - Button1 Press to decrease the delay time2
DELAY CONTROL
5
6 DELAY (mSEC) 7-segment Display Displays the delay time3
7 ON LED Lights when the unit is powered
RIGHT 2
LEFT
RIGHT 3 ANALOG INPUT Terminal
LEFT
+ Button1 Press to increase the delay time2
Connect to the analog audio acceptor
Connect to the analog audio source
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)
4
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Using the VA-256xl Audio Delay
Display
Receiver
Audio connection for the VP-724xl
GRL
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
s-Video
Source
Figure 2: Connecting the VA-256xl Audio Delay
5
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
6
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Using the VA-256xl Audio Delay
5.2 Setting the Delay Time
Set the delay time via the and + buttons1. 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 level2.
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
7
Technical Specifications
6 Technical Specifications
Table 2 includes the technical specifications:
Table 2: Technical Specifications1 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
8
KRAMER: SIMPLE CREATIVE TECHNOLOGY
LIMITED WARRANTY
Kramer Electronics (hereafter Kramer) warrants this product free from defects in material and workmanship under the
following terms.
HOW LONG IS THE WARRANTY
Labor and parts are warranted for seven years from the date of the first customer purchase.
WHO IS PROTECTED?
Only the first purchase customer may enforce this warranty.
WHAT IS COVERED AND WHAT IS NOT COVERED
Except as below, this warranty covers all defe cts in material or workmanship in this product. The following are not covered
by the warranty:
1. Any product which is not distributed by Kramer, or which is not purchased from an authorized Kramer dealer. If you are
uncertain as to whether a dealer is authorized, please co ntact Kramer at one of t he agents listed in the web site
www.kramerelectronics.com.
2. Any product, on which the serial number has been defaced, modified or removed.
3. Damage, deterioration or malfunction resulting from:
i) Accident, misuse, abuse, neglect, fire, water, lightning or other acts of nature
ii) Product modification, or failure to follow instructions supplied with the product
iii) Repair or attempted repair by anyone not authorized by Kramer
iv) Any shipment of the product (claims must be presented to the carrier)
v) Removal or installation of the product
vi) Any other cause, which does not relate to a product defect
vii) Cartons, equipment enclosures, cables or accessories used in conjunction with the product
WHAT WE WILL PAY FOR AND WHAT WE WILL NOT PAY FOR
We will pay labor and material expenses for covered items. We will not pay for the following:
4. Removal or installations charges.
5. Costs of initial technical adjustments (set-up), including ad justment of user controls or programming. These costs are the
responsibility of the Kramer dealer from whom the product was purchased.
6. Shipping charges.
HOW YOU CAN GET WARRANTY SERVICE
7. To obtain service on you product, you must take or ship it prepaid to any authorized Kramer service center.
8. Whenever warranty service is required, the original dated invoice (o r a co py) must be presented as proof of warranty coverage,
and should be included in any shipment of the product. Please also include in any mailing a contact name, company, address, and
a description of the problem(s).
9. For the name of the nearest Kramer authorized service center, consult your authorized dealer.
LIMITATION OF IMPLIED WARRANTIES
All implied warranties, including warranties of merchantability and fitness for a particular purpose, are limited in duration to
the length of this warranty.
EXCLUSION OF DAMAGES
The liability of Kra mer for any effective products is li mited to the repair or replacement of the product at our option. Kramer
shall not be liable for:
10. Damage to ot her property caused by defects in this product, damages based upo n inconvenience, loss of use of the pr oduct, loss
of time, commercial loss; or:
11. Any ot her damages, whether incidental, consequential or otherwise. Some countries may not allow limitations on how long an
implied warranty lasts and/or do not allow the exclusion or limitation of incidental or consequential damages, so the above
limitations and exclusions may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights, which vary from place to place.
NOTE: All products returned to Kramer for service must have prior approval. This may be obtained from your dealer.
This equipment has been tested to determine compliance with the requirements of:
EN-50081: "Electromagnetic compatibility (EMC);
EN-50082: "Electromagnetic compatibility (EMC) generic immunity standard.
CFR-47: FCC Rules and Regulations:
CAUTION!
Servicing the machines can only be done by an authorized Kramer technician. Any user who makes changes
or modifications to the unit without the expressed approval of the manufacturer will void user authority to
operate the equipment.
Use the supplied DC power supply to feed power to the machine.
Please use recommended interconnection cables to connect the machine to other components.
generic emission standard.
Part 1: Residential, commercial and light industry"
Part 1: Residential, commercial and light industry environment".
Part 15: “Radio frequency devices
Subpart B – Unintentional radiators”
9
For the latest information on our products and a list of Kramer
distributors, visit our Web site: www.kramerelectronics.com,
where updates to this user manual may be found.
We welcome your questions, comments and feedback.
Safety Warning:
Disconnect the unit from the power supply before
opening/servicing.
Caution
P/N:
2900-000234
Rev:
1
Kramer Electronics, Ltd.
Web site: www.kramerelectronics.com
E-mail: info@kramerel.com
P/N: 2900-000234 REV 1
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