Sams VA-16eql, VA-26eql, VA-36eql, VA-14eql, VA-24eql User Manual For Use And Maintenance

Analog video distribution amplier

1x6 / 1x4

- standalone

Copyright © 1999 - 2014 Sams elektronik d.o.o.

Published: 11. june 2012.

Updated: 29. october 2014.

Z10-3 edition 1

Code: 007.165

007.166

007.167

007.162

007.163

007.164

ENGLISH

VA

14eql/24eql/34eql

VA

16eql/26eql/36eql

Sams elektronik d.o.o.

48 Zivka Davidovica st.

11050 Belgrade

Serbia

Tel/Fax: [phone]

[phone]

[e-mail]

www.sams.rs

USER MANUAL FOR USE AND MAINTENANCE

Read the instructions before using the device.

Keep this manual for periodic usage.

VA

elektronik

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Dear User,
Thank you very much for purchasing our product.
Your purchase is a wise investment. The equipment you have purchased is manufactured with great care from

high-quality parts and materials. It is designed to fully meet the needs according to specications, if properly

installed, used and maintained according to the enclosed instructions.

Any technical failure or deciency that occurs during the warranty period specied on the invoice of the

purchased equipment will be inspected and serviced by Sams elektronik doo or an authorized service center of
the manufacturer, with the conditions set out in the warranty statement.

THIS DEVICE IS INTENDED FOR PROFESSIONAL USE.

WARRANTY STATEMENT

1. Product has declared characteristics. Within the warranty period, manufacturer ensures the removal of
technical failures, product defects or replacement of products if declared characteristics of the product are
changed.

2. If the goods are not delivered as specied with the contract, the consumer has the right to request from the

manufacturer / service provider to eliminate the lack of conformity, without charge, repair or replacement,
or to request an appropriate price reduction or terminate the contract.

3. Any repair or replacement must be made within a reasonable time without signicant inconvenience to

the consumer, taking into account the nature and the purpose for which the consumer has purchased the
product.

4. The consumer has the right to terminate the contract, if he can realize the right to repair or replacement,
or if the manufacturer / servicer has not completed repair or replacement within a reasonable time or if

the manufacturer / servicer did not perform repair or replacement without signicant inconvenience to the

consumer.

5. The consumer may not terminate the contract if the lack of conformity of the product is negligible.

6. The product will function properly when used in accordance with the user manual.

7. Period of servicing the product is 6 years from the launch on the market.

The product purchased outside the territory of Serbia does not fall under the terms of this warranty, only to 1
year factory warranty from date of purchase.

TERMS OF WARRANTY

1. The warranty period begins on the date of sale referred in the invoice.

2. The buyer loses the right to warranty if the defect cause failure from not following the user manual

instructions, improper installation, comes to mechanical damage during use, repairs and modications by

unauthorized persons, installation of non-genuine spare parts, and if the buyer does not comply with all
warnings listed in the user manual.

3. The warranty is voided if the device is damaged during the disturbances from the environment, natural

disasters (oods, hail, etc.), suffered an electric shock or lightning strike.

IMPORTANT NOTES

1. Be sure to thoroughly read the user manual.

If you have any doubts about the instructions, contact the technical support of the manufacturer.

2. Before contacting for technical help, please make sure that are provided with all necessary conditions for
normal operation.

3. If the malfunction or defect in the device does not eliminate within a reasonable time from the date of
failure, the warranty period shall be extended for as many days as the unit is in service.

4. For all maintenance interventions shall solely be authorized services listed in this Warranty Certicate.

WARRANTY

VA

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IMPORTANT SAFEY

WARNING

TO AVOID RISK OF FIRE OR ELECTRIC SHOCK
DO NOT EXPOSE THE UNIT TO MOISTURE OR RAIN

The symbol “lightning in a triangle” is to alert the user to the presence of
high voltage. In poor conditions the user may be exposed to shock.

The symbol “exclamation mark in a triangle” is to alert the user to comply by
the terms of use in user’s manual, which is supplied with the device.

SAFETY WARNINGS

ELECTRICAL SHOCK HAZA RD

DO N OT O PEN

CAUTION

RIZIK OD S TRUJNOG UDARA

NE O TVARATI

DOK JE P OD N APONOM

UPOZORENJE

CLASS I DEVICE
Grounding is connected to the chassis of the device.
The power supply is protected with fuse against overload.

VA

elektronik

Sams elektronik d.o.o. • [e-mail] • www.sams.rs

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TECHNICAL SUPPORT AND SERVICE

Sams elektronik has made every effort to ensure that the equipment works in perfect condition. In
the event that problems that occur can not be resolved, or if you have any questions regarding this
equipment or information about other products produced from Sams elektronik, contact your local sales
representative or call Sams elektronik directly through one of the ways listed below:

Sales: [phone]
Technical support: [phone]
Service: [phone]
Email:
Sales - [e-mail]
Technical support and service - [e-mail]

Web site: www.sams.rs

Address:
SAMS ELEKTRONIK d.o.o.
48 Zivka Davidovica st
11050 Belgrade
Serbia

WARNING

TO AVOID ELECTRIC SHOCK, DO NOT OPEN COVER.
DEVICE MAINTENANCE REQUIRES PROFESSIONAL PERSON AUTHORIZED BY THE MANUFACTURER.

1. Read all safety and operating instructions before using the device.

2. Keep all safety and operating instructions.

3. Follow the instructions from the user manual.

4. Do not upgrade device, except in the case advised by the manufacturer.

5. Do not use the device in the presence of water and / or moisture.

6. Do not pour water or moisten the device with any type of liquid.

7. Openings on device are provided for ventilation.

8. Do not block air ow through the ventilation openings.

9. This product is powered by AC ~ 230V ± 10%, 50Hz.

10. This product is equipped with a three-wire cord with grounding.

11. This device is equipped with a protective fuse in the power outlet. Do not bypass fuse.

12. Do not replace the fuse. Replacement can be made by a person authorized by the manufacturer.

13. Do not bend the power cord so that it can be damaged.

14. Connect connectors as in the enclosed instructions. Deviations from the allowed values predicted
for the inputs and outputs of the device can cause severe damage and warranty void.

15. Do not use the device in an environment that contains ammable or explosive materials in any

physical state.

16. Turn off the power corde before cleaning. Do not use liquid, aerosol or ammable cleaners. Use

only a dry cloth.

17. Servicing is performed by a qualied person. Removing the cover user is exposed to high

voltages.

18. Never use the device when the cover is open and the device is powered on.

19. Do not expose to extreme high or low temperatures.

20. Do not expose to sudden temperature changes.

21. Call service in the following cases:

- The power cord or plug is damaged

- Liquid or foreign objects is inside the device

- The machine is exposed to water and moisture

- The device does not function according to specication

- The unit has been dropped or damaged

- The characteristics are signicantly changed

22. Use only specied replacement parts.

23. Professional person authorized by the manufacturer must check the device after completion of
service.

24. Allow a free rack unit (1RU) above and below the device for ventilation or put rack fan under the

device.

Pictures and drawings listed in this user manual are for information purposes only and may differ

from the actual device. Design and specications of the device may change without prior notice.

VA

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UNPACKING AND INSTALLATION ....................................................................................6

MAINTENANCE ..............................................................................................................6

REMOVAL AND STORAGE ...............................................................................................6

DESCRIPTION ...............................................................................................................7

INSTALLATION ..............................................................................................................13

ADJUSTMENT ...............................................................................................................14

REMARKS ..................................................................................................................... 15

ACCESS TO ADJUST TRIMMER ....................................................................................... 15

NOTES .........................................................................................................................16

PageDescription

TABLE OF CONTENTS

VA

elektronik

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UNPACKING AND INSTALLATION

REMOVAL AND STORAGE

MAINTENANCE

The box contains:

- Device

- Power corde

- User manual (optional)

Before use, check the contents of the box. For any deciency report to the seller or the manufacturer

of the product.

DEVICE IS INSULATED BY PROTECTIVE WRAP AND PACKED IN A CARDBOARD BOX.
DEVICE IS SENSITIVE TO SHAKES AND DROPS. HANDLE WITH CARE DURING TRANSPORT
AND ASSEMBLY.

Check if the product is damaged during transport.

1. Before dismantling the device, switch off the power, remove
the power cord and remove all other connectors.

2. Remove the four screws for fastening.

3. Remove the device from rack cabinet.

4. Wrap the machine in the foil to protect it from dust. Package
it in a box.

5. The device must be stored in a room without moisture.

The system maintains only person authorized by Sams elektronik
doo.
Any voluntarily opening device, upgrading or servicing is strictly
prohibited and is subject to warranty void, and the possibility of
injury.

Places for fastening

PROCEDURES FOR SAFE USE OF THE DEVICE:

1. - Remove the protective wrap from the chassis.

- For devices that are AC 230V / 50Hz powered, the device is supplied with power cord.

- Use only power corde that comes with the device.

2. Device is mounted in a 19“ special-purpose rack cabinets designed for this type of device. Screw
device with four screws. Screws for fastening are not supplied with the device.

3. The device must be connected to ground. A device that is not connected to the grounding does
not function properly according to factory declarations and can cause adverse effects on users and
other equipment.

4. Strictly comply to all steps for proper connection of devices in the system.

Illustration - mounted device

VA

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DESCRIPTION

ANALOG VIDEO DISTRIBUTION AMPLIFIERS

The VA-16eql is 1RU device with modules. It will provides hum removal and equalization for long cable runs of up to
300m. The VA-36eql features 30MHz bandwidth, differential input and variable equalization for up to 300m (1000ft)
of Belden 8281 coaxial cable.

TECHNICAL SPECIFICATIONS

GENERAL INFORMATION

- Code: .................................................................... 007.162

- Weight: ......................................................................2 Kg

- Type: .........................................................1RU rack frame

- Dimensions: ........................................ 1RU x 19” x 100mm

- Delivery includes: ............. device, power corde, user manual

INPUT

-Video Input Level: ........................................ 1V p-p nominal

-Input Impedance: ..................... 75Ω loop-trough, differential

-Coupling: ....................................... AC/DC jumper selectable

OUTPUT

-Number: ...................................................................6, BNC

-Level: .......................................................... 1V p-p nominal

-Impedance: ..................................................................75Ω

PERFORMANCE

- Gain: ............................................................ -3dB do +3dB

- Gain stability: ...................................................... <±0.1dB

- Frequency response: ...................... ±0.1dB (50Hz do 8MHz)

- Equalization range: ............................ 0-300m, Belden 8281

- Clamping accuracy: .............................................. <±30mV

BLOCK DIAGRAM

ORDERING INFORMATION

Code Name Description

007.162 VA-16eql Analog video DA 1x6

Specications and designs are subject to change without notice

VA-16eql

Analog video distribution amplier with EQ,

1x6

- Differential input

- 30 MHz bandwidth

- Cable equalization for up to 300m at 8 MHz

- Gain range ±3dB

- 6 outputs

front side

rear side

POWER

- Voltage: ................................................. ~230V AC ± 10%

- Power: ....................................................................... 30W

- Frequency: ................................................................ 50Hz

- Overload protection: .............. front Mounted Circuit Breaker

TEMPERATURE

- Performance: .......................................................... 5-40°C

- Operating: .............................................................. 0-50°C

IN

OUT

GAIN

EQ

LOOP

LED

Signal indication

LED

Power

DIFFERENTIAL

1

2

3

4

5

6

VA

elektronik

Sams elektronik d.o.o. • [e-mail] • www.sams.rs

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Distribution ampliers

ANALOG VIDEO DISTRIBUTION AMPLIFIERS

• Sams elektronik d.o.o. • 48 Zivka Davidovica st. • 11050 Belgrade • Serbia •

• [phone]; [phone] • [e-mail] • www.sams.rs •

The VA-26eql is 1RU device with modules. It will provides hum removal and equalization for long cable runs of up to
300m. The VA-36eql features 30MHz bandwidth, differential input and variable equalization for up to 300m (1000ft)
of Belden 8281 coaxial cable.

TECHNICAL SPECIFICATIONS

GENERAL INFORMATION

- Code: .................................................................... 007.163

- Weight: ......................................................................2 Kg

- Type: .........................................................1RU rack frame

- Dimensions: ........................................ 1RU x 19” x 100mm

- Delivery includes: ............. device, power corde, user manual

INPUT

-Video Input Level: ........................................ 1V p-p nominal

-Input Impedance: ..................... 75Ω loop-trough, differential

-Coupling: ....................................... AC/DC jumper selectable

OUTPUT

-Number: ...................................................................6, BNC

-Level: .......................................................... 1V p-p nominal

-Impedance: ..................................................................75Ω

PERFORMANCE

- Gain: ............................................................ -3dB do +3dB

- Gain stability: ...................................................... <±0.1dB

- Frequency response: ...................... ±0.1dB (50Hz do 8MHz)

- Equalization range: ............................ 0-300m, Belden 8281

- Clamping accuracy: .............................................. <±30mV

BLOCK DIAGRAM

ORDERING INFORMATION

Code Name Description

007.163 VA-26eql Analog video DA 2x 1x6

Specications and designs are subject to change without notice

VA-26eql

Analog video distribution amplier with EQ, 2x

1x6

- Differential input

- 30 MHz bandwidth

- Cable equalization for up to 300m at 8 MHz

- Gain range ±3dB

- 6 outputs

front side

rear side

POWER

- Voltage: ................................................. ~230V AC ± 10%

- Power: ....................................................................... 30W

- Frequency: ................................................................ 50Hz

- Overload protection: .............. front Mounted Circuit Breaker

TEMPERATURE

- Performance: .......................................................... 5-40°C

- Operating: .............................................................. 0-50°C

IN

OUT

GAIN

EQ

LOOP

LED

Signal indication

LED

Power

DIFFERENTIAL

1

2

3

4

5

6

VA

Sams elektronik d.o.o. • [e-mail] • www.sams.rs

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Distribution ampliers

ANALOG VIDEO DISTRIBUTION AMPLIFIERS

The VA-36eql is 1RU device with modules. It will provides hum removal and equalization for long cable runs of up to
300m. The VA-36eql features 30MHz bandwidth, differential input and variable equalization for up to 300m (1000ft)
of Belden 8281 coaxial cable.

TECHNICAL SPECIFICATIONS

GENERAL INFORMATION

- Code: .................................................................... 007.164

- Weight: ......................................................................2 Kg

- Type: .........................................................1RU rack frame

- Dimensions: ........................................ 1RU x 19” x 100mm

- Delivery includes: ............. device, power corde, user manual

INPUT

-Video Input Level: ........................................ 1V p-p nominal

-Input Impedance: ..................... 75Ω loop-trough, differential

-Coupling: ....................................... AC/DC jumper selectable

OUTPUT

-Number: ...................................................................6, BNC

-Level: .......................................................... 1V p-p nominal

-Impedance: ..................................................................75Ω

PERFORMANCE

- Gain: ............................................................ -3dB do +3dB

- Gain stability: ...................................................... <±0.1dB

- Frequency response: ...................... ±0.1dB (50Hz do 8MHz)

- Equalization range: ............................ 0-300m, Belden 8281

- Clamping accuracy: .............................................. <±30mV

BLOCK DIAGRAM

ORDERING INFORMATION

Code Name Description

007.164 VA-36eql Analog video DA 3x 1x6

Specications and designs are subject to change without notice

VA-36eql

Analog video distribution amplier with EQ, 3x

1x6

- Differential input

- 30 MHz bandwidth

- Cable equalization for up to 300m at 8 MHz

- Gain range ±3dB

- 6 outputs

front side

rear side

POWER

- Voltage: ................................................. ~230V AC ± 10%

- Power: ....................................................................... 30W

- Frequency: ................................................................ 50Hz

- Overload protection: .............. front Mounted Circuit Breaker

TEMPERATURE

- Performance: .......................................................... 5-40°C

- Operating: .............................................................. 0-50°C

IN

OUT

GAIN

EQ

LOOP

LED

Signal indication

LED

Power

DIFFERENTIAL

1

2

3

4

5

6

VA

elektronik

Sams elektronik d.o.o. • [e-mail] • www.sams.rs

10

Distribution ampliers

ANALOG VIDEO DISTRIBUTION AMPLIFIERS

• Sams elektronik d.o.o. • 48 Zivka Davidovica st. • 11050 Belgrade • Serbia •

• [phone]; [phone] • [e-mail] • www.sams.rs •

The VA-14eql is 1RU device with modules. It will provides hum removal and equalization for long cable runs of up to
300m. The VA-36eql features 30MHz bandwidth, differential input and variable equalization for up to 300m (1000ft)
of Belden 8281 coaxial cable.

TECHNICAL SPECIFICATIONS

GENERAL INFORMATION

- Code: .................................................................... 007.165

- Weight: ......................................................................2 Kg

- Type: .........................................................1RU rack frame

- Dimensions: ........................................ 1RU x 19” x 100mm

- Delivery includes: ............. device, power corde, user manual

INPUT

-Video Input Level: ........................................ 1V p-p nominal

-Input Impedance: ..................... 75Ω loop-trough, differential

-Coupling: ....................................... AC/DC jumper selectable

OUTPUT

-Number: ...................................................................4, BNC

-Level: .......................................................... 1V p-p nominal

-Impedance: ..................................................................75Ω

PERFORMANCE

- Gain: ............................................................ -3dB do +3dB

- Gain stability: ...................................................... <±0.1dB

- Frequency response: ...................... ±0.1dB (50Hz do 8MHz)

- Equalization range: ............................ 0-300m, Belden 8281

- Clamping accuracy: .............................................. <±30mV

BLOCK DIAGRAM

ORDERING INFORMATION

Code Name Description

007.165 VA-14eql Analog video DA 1x4

Specications and designs are subject to change without notice

VA-14eql

Analog video distribution amplier with EQ,

1x4

- Differential input

- 30 MHz bandwidth

- Cable equalization for up to 300m at 8 MHz

- Gain range ±3dB

- 4 outputs

front side

rear side

POWER

- Voltage: ................................................. ~230V AC ± 10%

- Power: ....................................................................... 30W

- Frequency: ................................................................ 50Hz

- Overload protection: .............. front Mounted Circuit Breaker

TEMPERATURE

- Performance: .......................................................... 5-40°C

- Operating: .............................................................. 0-50°C

IN

OUT

GAIN

EQ

LOOP

LED

Signal indication

LED

Power

DIFFERENTIAL

1

2

3

4

VA

Sams elektronik d.o.o. • [e-mail] • www.sams.rs

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Distribution ampliers

ANALOG VIDEO DISTRIBUTION AMPLIFIERS

The VA-24eql is 1RU device with modules. It will provides hum removal and equalization for long cable runs of up to
300m. The VA-36eql features 30MHz bandwidth, differential input and variable equalization for up to 300m (1000ft)
of Belden 8281 coaxial cable.

TECHNICAL SPECIFICATIONS

GENERAL INFORMATION

- Code: .................................................................... 007.166

- Weight: ......................................................................2 Kg

- Type: .........................................................1RU rack frame

- Dimensions: ........................................ 1RU x 19” x 100mm

- Delivery includes: ............. device, power corde, user manual

INPUT

-Video Input Level: ........................................ 1V p-p nominal

-Input Impedance: ..................... 75Ω loop-trough, differential

-Coupling: ....................................... AC/DC jumper selectable

OUTPUT

-Number: ...................................................................4, BNC

-Level: .......................................................... 1V p-p nominal

-Impedance: ..................................................................75Ω

PERFORMANCE

- Gain: ............................................................ -3dB do +3dB

- Gain stability: ...................................................... <±0.1dB

- Frequency response: ...................... ±0.1dB (50Hz do 8MHz)

- Equalization range: ............................ 0-300m, Belden 8281

- Clamping accuracy: .............................................. <±30mV

BLOCK DIAGRAM

ORDERING INFORMATION

Code Name Description

007.166 VA-24eql Analog video DA 2x 1x4

Specications and designs are subject to change without notice

VA-24eql

Analog video distribution amplier with EQ, 2x

1x4

- Differential input

- 30 MHz bandwidth

- Cable equalization for up to 300m at 8 MHz

- Gain range ±3dB

- 4 outputs

front side

rear side

POWER

- Voltage: ................................................. ~230V AC ± 10%

- Power: ....................................................................... 30W

- Frequency: ................................................................ 50Hz

- Overload protection: .............. front Mounted Circuit Breaker

TEMPERATURE

- Performance: .......................................................... 5-40°C

- Operating: .............................................................. 0-50°C

IN

OUT

GAIN

EQ

LOOP

LED

Signal indication

LED

Power

DIFFERENTIAL

1

2

3

4

VA

elektronik

Sams elektronik d.o.o. • [e-mail] • www.sams.rs

12

Distribution ampliers

ANALOG VIDEO DISTRIBUTION AMPLIFIERS

• Sams elektronik d.o.o. • 48 Zivka Davidovica st. • 11050 Belgrade • Serbia •

• [phone]; [phone] • [e-mail] • www.sams.rs •

The VA-34eql is 1RU device with modules. It will provides hum removal and equalization for long cable runs of up to
300m. The VA-36eql features 30MHz bandwidth, differential input and variable equalization for up to 300m (1000ft)
of Belden 8281 coaxial cable.

TECHNICAL SPECIFICATIONS

GENERAL INFORMATION

- Code: .................................................................... 007.167

- Weight: ......................................................................2 Kg

- Type: .........................................................1RU rack frame

- Dimensions: ........................................ 1RU x 19” x 100mm

- Delivery includes: ............. device, power corde, user manual

INPUT

-Video Input Level: ........................................ 1V p-p nominal

-Input Impedance: ..................... 75Ω loop-trough, differential

-Coupling: ....................................... AC/DC jumper selectable

OUTPUT

-Number: ...................................................................4, BNC

-Level: .......................................................... 1V p-p nominal

-Impedance: ..................................................................75Ω

PERFORMANCE

- Gain: ............................................................ -3dB do +3dB

- Gain stability: ...................................................... <±0.1dB

- Frequency response: ...................... ±0.1dB (50Hz do 8MHz)

- Equalization range: ............................ 0-300m, Belden 8281

- Clamping accuracy: .............................................. <±30mV

BLOCK DIAGRAM

ORDERING INFORMATION

Code Name Description

007.167 VA-34eql Analog video DA 3x 1x4

Specications and designs are subject to change without notice

VA-34eql

Analog video distribution amplier with EQ, 3x

1x4

- Differential input

- 30 MHz bandwidth

- Cable equalization for up to 300m at 8 MHz

- Gain range ±3dB

- 4 outputs

front side

rear side

POWER

- Voltage: ................................................. ~230V AC ± 10%

- Power: ....................................................................... 30W

- Frequency: ................................................................ 50Hz

- Overload protection: .............. front Mounted Circuit Breaker

TEMPERATURE

- Performance: .......................................................... 5-40°C

- Operating: .............................................................. 0-50°C

IN

OUT

GAIN

EQ

LOOP

LED

Signal indication

LED

Power

DIFFERENTIAL

1

2

3

4

VA

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Distribution ampliers

1

2

3

GAIN EQ

75Ω

term.

LED to indicate the presence of signal

1) GAIN - Trimer to correct the overall level of video signals. Allows gain correction of ± 3dB.

2) EQ - Electronic compensation process of loss of high frequencies that occur on long cables.
Allows correction of up to 300m with Belden 8281 cable.

VA-16eql, front side

LEDs to indicate the presence of power

+ V: red LED

- V: green LED

VA-16eql, rear side

VA-26eql, rear side

VA-36eql, rear side

VA-14eql, rear side

VA-24eql, rear side

VA-34eql, rear side

VA-12eql, rear side

NOTE: Assignment of inputs and outputs can differ on the device in respect to these views.

FUSE: 500mA

AC ~230V/50Hz

POWER

VIDEO

INPUT5

LOOP63412

www.sams.rs

Made in Serbia

VA-16

eql

CODE: 007.162

SN:

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION

RIZIK OD STRUJNOG UDARA

NE OTVARATI

UPOZORENJE

USE ONLY WITH A 250V FUSE

Video distribution amplifier 1x6

VA-16

eql

www.sams.rs

–+ V

GAIN EQ

POWER SIGNAL

VIDEO

www.sams.rs

Made in Serbia

VA-26

eql

SN:

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION

FUSE: 500mA

AC ~230V/50Hz

POWER

VIDEO 2

INPUT 1

LOOP 23456

VIDEO 1

INPUT 1

LOOP 23456

USE ONLY WITH A 250V FUSE

FUSE: 500mA

AC ~230V/50Hz

POWER

VIDEO 3

INPUT 1

LOOP 23456

VIDEO 2

INPUT 1

LOOP 23456

VIDEO 1

INPUT 1

LOOP 23456

www.sams.rs

Made in Serbia

VA-36eql

CODE: 007.164

SN:

ELECTRICAL SHOCK HAZARD

DO NOT OPEN

CAUTION

RIZIK OD STRUJNOG UDARA

NE OTVARATI

DOK JE POD NAPONOM

UPOZORENJE

USE ONLY WITH A 250V FUSE

www.sams.rs

Made in Serbia

VA-4

eql

CODE: 007.165

SN:

FUSE: 500mA

AC ~230V/50Hz

POWER

VIDEO OUTPUTVIDEO INPUT

VIDEO LOOP

1 2 3 4

75 Ω

ON

OFF

USE ONLY WITH A 250V FUSE

www.sams.rs

Made in Serbia

VA-24

eql

CODE: 007.166

SN:

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION

FUSE: 500mA

AC ~230V/50Hz

POWER

VIDEO OUTPUT 1VIDEO INPUT 1

VIDEO LOOP

1 2 3 4

75 Ω

ON

OFF

VIDEO OUTPUT 2VIDEO INPUT 2

VIDEO LOOP

1 2 3 4

75 Ω

ON

OFF

USE ONLY WITH A 250V FUSE

www.sams.rs

Made in Serbia

VA-34

eql

CODE: 007.167

SN:

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION

FUSE: 500mA

AC ~230V/50Hz

POWER

VIDEO OUTPUT 1VIDEO INPUT 1

VIDEO LOOP

1

75 Ω

ON

OFF

2 3 4

VIDEO OUTPUT 2VIDEO INPUT 2

VIDEO LOOP

1

75 Ω

ON

OFF

2 3 4

VIDEO OUTPUT 3VIDEO INPUT 3

VIDEO LOOP

1

75 Ω

ON

OFF

2 3 4

USE ONLY WITH A 250V FUSE

FUSE: 500mA

AC ~230V/50Hz

POWER

ON

VIDEO LOOP

7654321 8 9 10 11 12

75 Ω

OFF

www.sams.rs
Made in Serbia

VA-12

eql

CODE: 000.918

SN:

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION

RIZIK OD STRUJNOG UDARA

NE OTVARATI

UPOZORENJE

VIDEO OUT

VIDEO IN

ON

USE ONLY WITH A 250V FUSE

Connect the power cord.

The device works only on AC ~ 230 V / 50 Hz.

Input

+loop

Input

+loop

Outputs

Outputs

Input

+loop

Outputs

Input

+loop

Outputs

Input

+loop

Outputs

Input

+loop

Outputs

75Ω

term.

Input

+loop

Outputs

75Ω

term.

Input

+loop

Outputs

75Ω

term.

Input
+loop

Outputs

75Ω

term.

Input

+loop

Outputs

Outputs

75Ω

term.

75Ω

term.

Input

+loop

Input

+loop

Outputs

Input

+loop

Outputs

Connect all necessary connectors

before the unit is turned on.

Turn on the device

by pressing the switch.

INSTALLATION

VA

elektronik

Sams elektronik d.o.o. • [e-mail] • www.sams.rs

14

Distribution ampliers

ADJUSTMENT

Video distribution is factory set to (GAIN) 1V p-p ± 5% @ 75% Color Bar test. EQ is set to minimum.

For adjust is used 1m cable.

To adjust the distribution in the system, it is necessary to have:

- Signal generator (a signal which is brought to the input of the distribution)

- Adequate measuring instrument (output signal of the distribution)

- A small flathead screwdriver (for adjusting)

1) Start test “75% Color bar”. Using a measuring instrument, note whether there is a deviation.

Slowly turn the GAIN potentiometer to adjust the signal level at 1V p-p.

2) EQ is the process of adjusting the balance between the levels of different frequencies in the

video signal. Due to the length of the cable, it will weaken the level of higher frequencies. Start
Multiburst test. Using a measuring instrument, note whether there is a deviation. Slowly turn the
EQ potentiometer to ensure consistency across all frequency amplification.

Test 1: 75% Color Bar for GAIN

Test 1: 75% Color Bar

Composite

Test 2: 60% Multiburst for EQ

Test 2: 60% Multiburst

5

Composite

FREQUENCY ATTENUATION

CORRECT EQ

VA

Sams elektronik d.o.o. • [e-mail] • www.sams.rs

elektronik

15

Distribution ampliers

Put a thin screwdriver through an opening in the
panel.
It can be adjusted by turning the trimmer.

ACCESS TO ADJUST TRIMMER

REMARKS

Loop must be closed with 75Ω terminator if not used.

Loop is used to pass incoming signal back into the system without adjustment. All corrections levels and
EQ of signal relating only on outputs.

Loop is not used Loop is used

75Ω terminator

VA

elektronik

Sams elektronik d.o.o. • [e-mail] • www.sams.rs

16

Distribution ampliers

NOTES