Kramer Electronics, Ltd.
USER MANUAL
Model:
VA-256D
Digital Audio Delay
ADDENDUM (this data is included at the end of the Overview section)
This addendum adds the following information to the user manual:
Caution – No operator-serviceable parts inside unit.
Warning – Use only the Kramer Electronics input power
wall adapter that is provided with this unit1.
Warning – Disconnect power and unplug unit from wall
before installing or removing device or servicing unit.
1 For example: model number AD2512C, part number 2535-000251
2900-9999992
A1
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
350-plus different models now appear in 8 Groups1, which are clearly defined
by function.
Congratulations on purchasing your VA-256D, which is ideal for audio/video
broadcasting and production studios.
The package includes the following items:
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VA-256D Digital Audio Delay
Power adapter (12V DC Input)
This user manual2
2 Getting Started
We recommend that you:
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Unpack the equipment carefully and save the original box and packaging
materials for possible future shipment
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Review the contents of this user manual
Use Kramer high performance high resolution cables3
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
1
Overview
3 Overview
The Kramer VA-256D is a digital delay line that can be used as a
coax-to-optical or optical-to-coax converter, as a coax or optical repeater, and
as an audio delay line.
The high-performance VA-256D:
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Lets you adjust for lip sync errors so that the audio delay will match the
video delay1
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Provides a user-programmable delay of the audio signal
Is EIAJ CP1201, IEC-60958, AES3, S/PDIF compatible and supports 32kHz to
96kHz sample frequency range
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Is fully transparent to the digital stream, making it ideal for the most demanding
audio applications including home cinema and professional audio applications
(such as PCM, Dolby Digital, DTS, AES and so on)
Is 12VDC fed and is housed in a DigiTOOLS enclosure
Achieving the best performance means:
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Connecting 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)
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Avoiding interference that may adversely influence signal quality and
positioning the VA-256D away from moisture, excessive sunlight and dust
4 Your VA-256D Digital Audio Delay
Figure 1 and Table 1 define the VA-256D Digital Audio Delay:
1 An example of a TV broadcasting lip sync error is when the sound is heard before the speaker’s lips move
KRAMER: SIMPLE CREATIVE TECHNOLOGY
2
Your VA-256D Digital Audio Delay
Figure 1: VA-256D Digital Audio Delay
Table 1: Features and Functions of the VA-256D Digital Audio Delay
#
Feature
Function
1
2
12V DC
+12V DC connector for powering the unit
Connect to the digital audio source
S/PDIF RCA Connector
OPTICAL Connector
S/PDIF
3
4
Connect to the digital audio source
Connect to the digital audio acceptor
5
OPTICAL
Connect to the digital audio acceptor
6
7
8
9
ON LED
DELAY CONTROL Dipswitches
LINK LED
Illuminates when receiving power
Dipswitches for setup of the delay time1
Illuminates when the audio is locked
Push in to select the S/PDIF source,
release to select the OPTICAL source link
INPUT Button
1 Ranging from 0 to 682 milliseconds in increments of 2.6 milliseconds (see section 5.1)
3
Using the VA-256D Digital Audio Delay
5 Using the VA-256D Digital Audio Delay
To adjust a lip sync error when using a scaler, use the VA-256D, as the
example in Figure 2 illustrates:
1. Connect the audio outputs of the DVD players to the S/PDIF and/or
OPTICAL INPUTS on the VA-256D.
2. Connect the S/PDIF and/or OPTICAL OUTPUTS on the VA-256D to
the audio input on the audio receiver (for example an AV receiver).
3. Connect the 12V DC power adapter to the power socket and connect the
adapter to the mains electricity.
4. Set the Delay Control dipswitches, as section 5.1 describes.
5. Push in the INPUT button (item 9 in Figure 1) to select to select the
S/PDIF source, release it to select the optical source1.
AV Receiver
To a Scaler
and then to
Plasma Display
DVD
Player
DVD
Player
AV Receiver
Figure 2: Connecting the VA-256D Digital Audio Delay
1 Both outputs are available
KRAMER: SIMPLE CREATIVE TECHNOLOGY
4
Using the VA-256D Digital Audio Delay
5.1 Setting the Delay Control Dipswitches
By default, the VA-256D dipswitches are set to ON. Set the delay time,
according to the sample rate1, using the Delay Control dipswitches, as Table 2
defines.
Table 2: Setting the Delay Control Time using the Delay Control Dipswitches
msec
44.1
kHz
DIP
Binary
Value
Step
32
kHz
48
kHz
96
kHz
1
2
3
4
5
6
7
8
0
3.9
8
12
16
0
2.8
5.7
8.7
11.6
14.6
17.4
0
0
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
OFF ON
OFF ON
ON
ON
OFF ON
ON
OFF
0
1
2
3
4
5
6
0
1
10
2.6
5.3
8
10.7
13.4
16
1.3
2/6
4
5.3
6.7
8
OFF OFF
11
ON
OFF
100
101
110
20.1
22.4
OFF OFF ON
28
20.3
23.3
26.1
18.7
21.4
24
9.3
10.7
12
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
OFF OFF OFF
7
8
9
111
32.1
36
OFF ON
OFF ON
OFF ON
ON
ON
ON
1000
1001
OFF
40
60
29
26.7
40
53.5
67
13.3
20
26.7
33.5
46.8
60
73.5
100
133
167
200
234
267
301
334
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
OFF ON
OFF ON
ON
ON
OFF ON
10
1010
1111
10100
11001
43.5
58.2
73
OFF OFF OFF OFF 15
OFF ON ON 20
OFF OFF ON ON OFF 25
OFF OFF 35
80.2
100
140
180
220
301
400
501
601
702
802
903
1003
OFF ON
102
131
160
219
291
363
436
509
582
655
728
93.6
120
147
201
267
334
401
468
535
602
669
ON
ON
100011
101101
110111
1001011
1100100
1111101
10010110
10101111
11001000
11100001
11111010
OFF OFF ON
OFF 45
OFF OFF OFF 55
OFF OFF ON
ON
OFF OFF ON
OFF OFF OFF OFF OFF ON
OFF ON
OFF ON
ON OFF ON
OFF OFF 75
ON
OFF 125
OFF OFF ON
100
OFF ON
ON
OFF ON
ON
OFF OFF OFF ON
OFF OFF OFF OFF OFF ON
OFF OFF OFF OFF OFF OFF OFF OFF 255
OFF ON
150
OFF ON
OFF OFF OFF OFF 175
OFF ON
ON ON
OFF OFF ON
ON
ON
OFF ON
ON
OFF 225
250
200
1023
742
682
341
11111111
1 32kHz, 44.1kHz, 48kHz or 96kHz
5
Technical Specifications
6 Technical Specifications
Table 3 includes the technical specifications:
Table 3: Technical Specifications1 of the VA-256D Digital Audio Delay
INPUTS:
OUTPUTS:
1 S/PDIF input on an RCA connector; 1 Toslink optical connector
1 S/PDIF output on an RCA connector; 1 Toslink optical connector
AUDIO SIGNAL COMPATIBILITY:
Digital Audio (S/PDIF): All current broadcast/DVD standards,
including Dolby Digital, EX, DTS, ES and PCM
Audio sample rates of 32kHz, 44.1kHz, 48kHz (standard DVD) and
96kHz (DTS 96/24)
AUDIO DELAY CAPABILITIES
(DIPSWITCH SETTINGS):
0-999ms for 32kHz sample rate signals
0-740ms for 44.1kHz sample rate signals
0-680ms for 48kHz sample rate signals
0-340ms for 96kHz sample rate signals
POWER SOURCE:
DIMENSIONS:
WEIGHT:
12V DC, 300mA
12 cm x 7.5 cm x 2.5 cm (4.7" x 2.95" 0.98", W, D, H)
0.3 kg (0.67 lbs.) approx.
ACCESSORIES:
OPTIONS:
Power adapter, mounting bracket
19” rack adapters: RK-T1, RK-T3
1 Specifications are subject to change without notice
KRAMER: SIMPLE CREATIVE TECHNOLOGY
6
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 three 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 defects 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 dealer is authorized, please contact Kramer at one of the agents listed in the Web site
a
2.
3.
Any product, on which the serial number has been defaced, modified or removed.
Damage, deterioration or malfunction resulting from:
i)
ii)
iii)
iv)
v)
Accident, misuse, abuse, neglect, fire, water, lightning or other acts of nature
Product modification, or failure to follow instructions supplied with the product
Repair or attempted repair by anyone not authorized by Kramer
Any shipment of the product (claims must be presented to the carrier)
Removal or installation of the product
vi)
vii)
Any other cause, which does not relate to a product defect
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:
1.
2.
Removal or installations charges.
Costs of initial technical adjustments (set-up), including adjustment of user controls or programming. These costs are the
responsibility of the Kramer dealer from whom the product was purchased.
3.
Shipping charges.
HOW YOU CAN GET WARRANTY SERVICE
1.
2.
To obtain service on you product, you must take or ship it prepaid to any authorized Kramer service center.
Whenever warranty service is required, the original dated invoice (or a copy) 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).
3.
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 Kramer for any effective products is limited to the repair or replacement of the product at our option. Kramer
shall not be liable for:
1.
Damage to other property caused by defects in this product, damages based upon inconvenience, loss of use of the product, loss
of time, commercial loss; or:
2.
Any other 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);
generic emission standard.
Part 1: Residential, commercial and light industry"
"Electromagnetic compatibility (EMC) generic immunity standard.
Part 1: Residential, commercial and light industry environment".
FCC Rules and Regulations:
EN-50082:
CFR-47:
Part 15: “Radio frequency devices
Subpart B – Unintentional radiators”
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.
7
For the latest information on our products and a list of Kramer
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
Kramer Electronics, Ltd.
E-mail: [email protected]
P/N: 2900-000048 REV 1
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