Sams VAA4a1l Instruction manual

Video / audio distribution ampliers
- 1x4
- 1x5
- 1x6
Copyright © 1999 - 2014 Sams elektronik d.o.o.
Published: 22. march 2012.
Datum zadnje promene: 29. october 2014.
Z10-3 edition 1
Code: 007.178
007.179
007.263
007.264
007.180
007.181
ENGLISH
VAA5a1l/5a2l
VAA6a1l/6a2l
VAA4a1l/4a2l
Sams elektronik d.o.o.
48 Zivka Davidovica st.
11050 Belgrade
Serbia
Tel/Fax: +381 11 3806 253
+381 11 2402 212
www.sams.rs
USER MANUAL FOR USE AND MAINTENANCE
Read the instructions before using the device.
Keep this manual for periodic usage.

VAA
elektronik
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 specications, if properly
installed, used and maintained according to the enclosed instructions.
Any technical failure or deciency that occurs during the warranty period specied 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 specied 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 signicant 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 signicant 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 modications 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 Certicate.
WARRANTY

VAA Sams elektronik d.o.o. • [email protected] • www.sams.rs
elektronik
3
Distribution ampliers
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 HAZARD
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.

VAA
elektronik
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: +381 11 3806 254
Technical support: +381 11 2402 212
Service: +381 11 4056 051
Email:
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 qualied 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 specication
- The unit has been dropped or damaged
- The characteristics are signicantly changed
22. Use only specied 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 specications of the device may change without prior notice.

VAA Sams elektronik d.o.o. • [email protected] • www.sams.rs
elektronik
5
Distribution ampliers
UNPACKING AND INSTALLATION....................................................................................6
MAINTENANCE..............................................................................................................6
REMOVAL AND STORAGE...............................................................................................6
DESCRIPTION...............................................................................................................7
INSTALLATION..............................................................................................................13
VIDEO ADJUSTMENT.....................................................................................................14
REMARKS .....................................................................................................................15
AUDIO ADJUSTMENT.....................................................................................................15
ACCESS TO ADJUST TRIMMER .......................................................................................15
NOTES .........................................................................................................................16
PageDescription
TABLE OF CONTENTS

VAA
elektronik
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 deciency 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

VAA Sams elektronik d.o.o. • [email protected] • www.sams.rs
elektronik
7
Distribution ampliers
DESCRIPTION
I
88
ANALOG AUDIO DISTRIBUTION AMPLIFIERS
• Sams elektronik d.o.o. • 48 Zivka Davidovica st. • 11050 Belgrade • Serbia •
VAA-4a2l a 1RU device with video and dual audio distribution 1x4. This is the amplier that enables the elimination of
losses and degradation in the video signal. It is characterized with: 30MHz frequency range, differential input and the
ability to equalize up to 300m (1000 feet) with Belden 8281 video cable, excellent isolation from crosstalk between
the channels which provided individual ampliers for each audio output. The device has the possibility of installation
of transformer at the entrance. Distribution automatically adjusts for unbalanced output.
TECHNICAL SPECIFICATIONS
GENERAL INFORMATION
- Code: ....................................................................007.179
- Weight: ...................................................................... 2 Kg
- Type: .........................................................1RU rack frame
- Dimensions: ........................................ 1RU x 19” x 100mm
- Delivery includes: ............. device, power corde, user manual
VIDEO INPUT
-Video Input Level: ........................................ 1V p-p nominal
-Input Impedance: .......................................75Ω loop-trough
VIDEO OUTPUT
-Number: ...................................................................4, BNC
-Level: .......................................................... 1V p-p nominal
-Impedance: ..................................................................75Ω
VIDEO 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
ORDERING INFORMATION
Code Name Description
007.179 VAA-4a2l Analog video / 2CH audio DA 1x4
Specications and designs are subject to change without notice
VAA-4a2l
Analog video / 2ch analog audio distribution
amplier 1x4
- High quality
- Differential input
- 30 MHz bandwidth
- Cable equalization for up to 300m at 8 MHz
- Gain range: ±3dB - video; ±6dB - audio
- Individual buffer outputs
- 4 outputs
- Available in 66Ω or 600Ω output impedance
- Transformer coupled input (optional)
AUDIO INPUT
- Number: ........................................................1 per channel
- Connector: ..................................................................XLR
- Impedance: ............................................ > 40KΩ, balanced
AUDIO OUTPUT
- Number: ........................................................4 per channel
- Connector: ..................................................................XLR
- Impedance: ....................................................600Ω or 66Ω
- Max output level: ..................................+ 24/16dBu (600Ω)
AUDIO PERFORMANCE
- Gain: ............................................................ -6dB do +6dB
- Frequency response: ................. < ± 0.1dB (20Hz to 20KHz)
- S/N ratio: ....................... > 100dB unity gain 20Hz to 20KHz
- TDH: .............................................. 0.1% at 20Hz to 20KHz
- Inter channel cross talk: ............... > 90dB at 20Hz to 20KHz
POWER
- Voltage: ................................................. ~230V AC ± 10%
- Power: .......................................................................30W
- Frequency: ................................................................ 50Hz
- Overload protection: .............. front Mounted Circuit Breaker
TEMPERATURE
- Performance: .......................................................... 5-40°C
- Operating: .............................................................. 0-50°C
front side
rear side

VAA
elektronik
I
91
ANALOG AUDIO DISTRIBUTION AMPLIFIERS
• Sams elektronik d.o.o. • 48 Zivka Davidovica st. • 11050 Belgrade • Serbia •
VAA-4a1l a 1RU device with video and audio distribution 1x4. This is the amplier that enables the elimination of
losses and degradation in the video signal. It is characterized with: 30MHz frequency range, differential input and the
ability to equalize up to 300m (1000 feet) with Belden 8281 video cable, excellent isolation from crosstalk between
the channels which provided individual ampliers for each audio output. The device has the possibility of installation
of transformer at the entrance. Distribution automatically adjusts for unbalanced output.
TECHNICAL SPECIFICATIONS
GENERAL INFORMATION
- Code: ....................................................................007.178
- Weight: ...................................................................... 2 Kg
- Type: ......................................................... 1RU rack frame
- Dimensions: ........................................ 1RU x 19” x 100mm
- Delivery includes: ............. device, power corde, user manual
VIDEO INPUT
-Video Input Level: ........................................ 1V p-p nominal
-Input Impedance: .......................................75Ω loop-trough
VIDEO OUTPUT
-Number: ...................................................................4, BNC
-Level: .......................................................... 1V p-p nominal
-Impedance: ..................................................................75Ω
VIDEO 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
ORDERING INFORMATION
Code Name Description
007.178 VAA-4a1l Analog video / 1CH audio DA 1x4
Specications and designs are subject to change without notice
VAA-4a1l
Analog video / 1ch analog audio distribution
amplier 1x4
- High quality
- Differential input
- 30 MHz bandwidth
- Cable equalization for up to 300m at 8 MHz
- Gain range: ±3dB - video; ±6dB - audio
- Individual buffer outputs
- 4 outputs
- Available in 66Ω or 600Ω output impedance
- Transformer coupled input (optional)
AUDIO INPUT
- Number: ..........................................................................1
- Connector: ............................................3-pin terminal strip
- Impedance: ............................................ > 40KΩ, balanced
AUDIO OUTPUT
- Number: ..........................................................................4
- Connector: ............................................3-pin terminal strip
- Impedance: ....................................................600Ω or 66Ω
- Max output level: ..................................+ 24/16dBu (600Ω)
AUDIO PERFORMANCE
- Gain: ............................................................ -6dB do +6dB
- Frequency response: ................. < ± 0.1dB (20Hz to 20KHz)
- S/N ratio: ....................... > 100dB unity gain 20Hz to 20KHz
- TDH: .............................................. 0.1% at 20Hz to 20KHz
- Inter channel cross talk: ............... > 90dB at 20Hz to 20KHz
POWER
- Voltage: ................................................. ~230V AC ± 10%
- Power: .......................................................................30W
- Frequency: ................................................................ 50Hz
- Overload protection: .............. front Mounted Circuit Breaker
TEMPERATURE
- Performance: .......................................................... 5-40°C
- Operating: .............................................................. 0-50°C
front side
rear side

VAA Sams elektronik d.o.o. • [email protected] • www.sams.rs
elektronik
9
Distribution ampliers
I
87
ANALOG AUDIO DISTRIBUTION AMPLIFIERS
• Sams elektronik d.o.o. • 48 Zivka Davidovica st. • 11050 Belgrade • Serbia •
VAA-5a2l a 1RU device with video and dual audio distribution 1x5. This is the amplier that enables the elimination of
losses and degradation in the video signal. It is characterized with: 30MHz frequency range, differential input and the
ability to equalize up to 300m (1000 feet) with Belden 8281 video cable, excellent isolation from crosstalk between
the channels which provided individual ampliers for each audio output. The device has the possibility of installation
of transformer at the entrance. Distribution automatically adjusts for unbalanced output.
TECHNICAL SPECIFICATIONS
GENERAL INFORMATION
- Code: ....................................................................007.264
- Weight: ...................................................................... 2 Kg
- Type: ......................................................... 1RU rack frame
- Dimensions: ........................................ 1RU x 19” x 100mm
- Delivery includes: ............. device, power corde, user manual
VIDEO INPUT
-Video Input Level: ........................................ 1V p-p nominal
-Input Impedance: .......................................75Ω loop-trough
VIDEO OUTPUT
-Number: ...................................................................5, BNC
-Level: .......................................................... 1V p-p nominal
-Impedance: ..................................................................75Ω
VIDEO 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
AUDIO INPUT
- Number: ........................................................1 per channel
- Connector: .................................................................. XLR
- Impedance: ............................................ > 40KΩ, balanced
ORDERING INFORMATION
Code Name Description
007.264 VAA-5a2l Analog video / 2CH audio DA 1x5
Specications and designs are subject to change without notice
VAA-5a2l
Analog video / 2ch analog audio distribution
amplier 1x5
- High quality
- Differential input
- 30 MHz bandwidth
- Cable equalization for up to 300m at 8 MHz
- Gain range: ±3dB - video; ±6dB - audio
- Individual buffer outputs
- 5 outputs
- Available in 66Ω or 600Ω output impedance
- Transformer coupled input (optional)
AUDIO OUTPUT
- Number: ........................................................5 per channel
- Connector: ..................................................................XLR
- Impedance: ....................................................600Ω or 66Ω
- Max output level: ..................................+ 24/16dBu (600Ω)
AUDIO PERFORMANCE
- Gain: ............................................................ -6dB do +6dB
- Frequency response: ................. < ± 0.1dB (20Hz to 20KHz)
- S/N ratio: ....................... > 100dB unity gain 20Hz to 20KHz
- TDH: .............................................. 0.1% at 20Hz to 20KHz
- Inter channel cross talk: ............... > 90dB at 20Hz to 20KHz
POWER
- Voltage: ................................................. ~230V AC ± 10%
- Power: .......................................................................30W
- Frequency: ................................................................ 50Hz
- Overload protection: .............. front Mounted Circuit Breaker
TEMPERATURE
- Performance: .......................................................... 5-40°C
- Operating: .............................................................. 0-50°C
front side
rear side

VAA
elektronik
I
90
ANALOG AUDIO DISTRIBUTION AMPLIFIERS
• Sams elektronik d.o.o. • 48 Zivka Davidovica st. • 11050 Belgrade • Serbia •
VAA-5a1l a 1RU device with video and audio distribution 1x5. This is the amplier that enables the elimination of
losses and degradation in the video signal. It is characterized with: 30MHz frequency range, differential input and the
ability to equalize up to 300m (1000 feet) with Belden 8281 video cable, excellent isolation from crosstalk between
the channels which provided individual ampliers for each audio output. The device has the possibility of installation
of transformer at the entrance. Distribution automatically adjusts for unbalanced output.
TECHNICAL SPECIFICATIONS
GENERAL INFORMATION
- Code: ....................................................................007.263
- Weight: ...................................................................... 2 Kg
- Type: ......................................................... 1RU rack frame
- Dimensions: ........................................ 1RU x 19” x 100mm
- Delivery includes: ............. device, power corde, user manual
VIDEO INPUT
-Video Input Level: ........................................ 1V p-p nominal
-Input Impedance: .......................................75Ω loop-trough
VIDEO OUTPUT
-Number: ...................................................................5, BNC
-Level: .......................................................... 1V p-p nominal
-Impedance: .................................................................75Ω
VIDEO 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
ORDERING INFORMATION
Code Name Description
007.263 VAA-5a1l Analog video / 1CH audio DA 1x5
Specications and designs are subject to change without notice
VAA-5a1l
Analog video / 1ch analog audio distribution
amplier 1x5
- High quality
- Differential input
- 30 MHz bandwidth
- Cable equalization for up to 300m at 8 MHz
- Gain range: ±3dB - video; ±6dB - audio
- Individual buffer outputs
- 5 outputs
- Available in 66Ω or 600Ω output impedance
- Transformer coupled input (optional)
AUDIO INPUT
- Number: ..........................................................................1
- Connector: ..................................................................XLR
- Impedance: ............................................ > 40KΩ, balanced
AUDIO OUTPUT
- Number: ..........................................................................5
- Connector: ..................................................................XLR
- Impedance: ....................................................600Ω or 66Ω
- Max output level: ..................................+ 24/16dBu (600Ω)
AUDIO PERFORMANCE
- Gain: ............................................................ -6dB do +6dB
- Frequency response: ................. < ± 0.1dB (20Hz to 20KHz)
- S/N ratio: ....................... > 100dB unity gain 20Hz to 20KHz
- TDH: .............................................. 0.1% at 20Hz to 20KHz
- Inter channel cross talk: ............... > 90dB at 20Hz to 20KHz
POWER
- Voltage: ................................................. ~230V AC ± 10%
- Power: .......................................................................30W
- Frequency: ................................................................ 50Hz
- Overload protection: .............. front Mounted Circuit Breaker
TEMPERATURE
- Performance: .......................................................... 5-40°C
- Operating: .............................................................. 0-50°C
front side
rear side

VAA Sams elektronik d.o.o. • [email protected] • www.sams.rs
elektronik
11
Distribution ampliers
I
86
ANALOG AUDIO DISTRIBUTION AMPLIFIERS
• Sams elektronik d.o.o. • 48 Zivka Davidovica st. • 11050 Belgrade • Serbia •
VAA-6a2l a 1RU device with video and dual audio distribution 1x6. This is the amplier that enables the elimination of
losses and degradation in the video signal. It is characterized with: 30MHz frequency range, differential input and the
ability to equalize up to 300m (1000 feet) with Belden 8281 video cable, excellent isolation from crosstalk between
the channels which provided individual ampliers for each audio output. The device has the possibility of installation
of transformer at the entrance. Distribution automatically adjusts for unbalanced output.
TECHNICAL SPECIFICATIONS
GENERAL INFORMATION
- Code: ....................................................................007.181
- Weight: ...................................................................... 2 Kg
- Type: ......................................................... 1RU rack frame
- Dimensions: ........................................ 1RU x 19” x 100mm
- Delivery includes: ............. device, power corde, user manual
VIDEO INPUT
-Video Input Level: ........................................ 1V p-p nominal
-Input Impedance: .......................................75Ω loop-trough
VIDEO OUTPUT
-Number: ...................................................................6, BNC
-Level: .......................................................... 1V p-p nominal
-Impedance: ..................................................................75Ω
VIDEO 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
ORDERING INFORMATION
Code Name Description
007.181 VAA-6a2l Analog video / 2CH audio DA 1x6
Specications and designs are subject to change without notice
VAA-6a2l
Analog video / 2ch analog audio distribution
amplier 1x6
- High quality
- Differential input
- 30 MHz bandwidth
- Cable equalization for up to 300m at 8 MHz
- Gain range: ±3dB - video; ±6dB - audio
- Individual buffer outputs
- 6 outputs
- Available in 66Ω or 600Ω output impedance
- Transformer coupled input (optional)
AUDIO INPUT
- Number: ........................................................1 per channel
- Connector: ............................................3-pin terminal strip
- Impedance: ............................................ > 40KΩ, balanced
AUDIO OUTPUT
- Number: ........................................................6 per channel
- Connector: ............................................3-pin terminal strip
- Impedance: ....................................................600Ω or 66Ω
- Max output level: ..................................+ 24/16dBu (600Ω)
AUDIO PERFORMANCE
- Gain: ............................................................ -6dB do +6dB
- Frequency response: ................. < ± 0.1dB (20Hz to 20KHz)
- S/N ratio: ....................... > 100dB unity gain 20Hz to 20KHz
- TDH: .............................................. 0.1% at 20Hz to 20KHz
- Inter channel cross talk: ............... > 90dB at 20Hz to 20KHz
POWER
- Voltage: ................................................. ~230V AC ± 10%
- Power: .......................................................................30W
- Frequency: ................................................................ 50Hz
- Overload protection: .............. front Mounted Circuit Breaker
TEMPERATURE
- Performance: .......................................................... 5-40°C
- Operating: .............................................................. 0-50°C
front side
rear side

VAA
elektronik
I
89
ANALOG AUDIO DISTRIBUTION AMPLIFIERS
• Sams elektronik d.o.o. • 48 Zivka Davidovica st. • 11050 Belgrade • Serbia •
VAA-6a1l a 1RU device with video and audio distribution 1x6. This is the amplier that enables the elimination of
losses and degradation in the video signal. It is characterized with: 30MHz frequency range, differential input and the
ability to equalize up to 300m (1000 feet) with Belden 8281 video cable, excellent isolation from crosstalk between
the channels which provided individual ampliers for each audio output. The device has the possibility of installation
of transformer at the entrance. Distribution automatically adjusts for unbalanced output.
TECHNICAL SPECIFICATIONS
GENERAL INFORMATION
- Code: ....................................................................007.180
- Weight: ...................................................................... 2 Kg
- Type: ......................................................... 1RU rack frame
- Dimensions: ........................................ 1RU x 19” x 100mm
- Delivery includes: ............. device, power corde, user manual
VIDEO INPUT
-Video Input Level: ........................................ 1V p-p nominal
-Input Impedance: .......................................75Ω loop-trough
VIDEO OUTPUT
-Number: ...................................................................6, BNC
-Level: .......................................................... 1V p-p nominal
-Impedance: ..................................................................75Ω
VIDEO 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
ORDERING INFORMATION
Code Name Description
007.180 VAA-6a1l Analog video / 1CH audio DA 1x6
Specications and designs are subject to change without notice
VAA-6a1l
Analog video / 1ch analog audio distribution
amplier 1x6
- High quality
- Differential input
- 30 MHz bandwidth
- Cable equalization for up to 300m at 8 MHz
- Gain range: ±3dB - video; ±6dB - audio
- Individual buffer outputs
- 6 outputs
- Available in 66Ω or 600Ω output impedance
- Transformer coupled input (optional)
AUDIO INPUT
- Number: ..........................................................................1
- Connector: XLR
- Impedance: ............................................ > 40KΩ, balanced
AUDIO OUTPUT
- Number: ..........................................................................6
- Connector: ..................................................................XLR
- Impedance: ....................................................600Ω or 66Ω
- Max output level: ..................................+ 24/16dBu (600Ω)
AUDIO PERFORMANCE
- Gain: ............................................................ -6dB do +6dB
- Frequency response: ................. < ± 0.1dB (20Hz to 20KHz)
- S/N ratio: ....................... > 100dB unity gain 20Hz to 20KHz
- TDH: .............................................. 0.1% at 20Hz to 20KHz
- Inter channel cross talk: ............... > 90dB at 20Hz to 20KHz
POWER
- Voltage: ................................................. ~230V AC ± 10%
- Power: .......................................................................30W
- Frequency: ................................................................ 50Hz
- Overload protection: .............. front Mounted Circuit Breaker
TEMPERATURE
- Performance: .......................................................... 5-40°C
- Operating: .............................................................. 0-50°C
front side
rear side

VAA Sams elektronik d.o.o. • [email protected] • www.sams.rs
elektronik
13
Distribution ampliers
GAIN
1
23
GAIN
GAIN EQ
+–
GAIN
AUDIO 2
+ –
GAIN
AUDIO 1
–+ V
GAIN EQ
POWER SIGNAL POWER POWER
VIDEO V V
VAA-6a2L
www.sams.rs
Video / 2ch audio distribution amplifier 1x6
FUSE: 500mA
AC ~230V/50Hz
www.sams.rs
Made in Serbia
VAA-6a2L
CODE: 007.181
SN:
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION
VIDEO IN VIDEO OUT
1
LOOP 2
3 5
4 6
AUDIO 2
INPUT OUTPUT #1 OUTPUT #2 OUTPUT #3 OUTPUT #4 OUTPUT #5 OUTPUT #6
G – +G – +G – +G – +G – +G – +G – +
AUDIO 1
INPUT OUTPUT #1 OUTPUT #2 OUTPUT #3 OUTPUT #4 OUTPUT #5 OUTPUT #6
G – +G – +G – +G – +G – +G – +G – +
USE ONLY WITH A 250V FUSE
FUSE: 500mA
AC ~230V/50Hz
INPUT OUTPUT1 2 3 4 5 6
POWER
www.sams.rs
Made in Serbia
VAA-6a1L
CODE: 007.180
SN:
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION
RIZIK OD STRUJNOG UDARA
NE OTVARATI
UPOZORENJE
VIDEO IN VIDEO OUT
1
LOOP 2
3 5
4 6
USE ONLY WITH A 250V FUSE
FUSE: 500mA
AC ~230V/50Hz
INPUT OUTPUT1 2 3 4 5 INPUT OUTPUT1 2 3 4 5
AUDIO 2 AUDIO 1
VIDEO OUTPUTVIDEO INPUT
VIDEO LOOP
1
2
3 5
4
POWER
USE ONLY WITH A 250V FUSE
FUSE: 500mA
AC ~230V/50Hz
INPUT OUTPUT1 2 3 4 5
AUDIO 1
VIDEO OUTPUTVIDEO INPUT
VIDEO LOOP
1
2
3 5
4
POWER
USE ONLY WITH A 250V FUSE
FUSE: 500mA
AC ~230V/50Hz
INPUT OUTPUT1 2 3 4 INPUT OUTPUT1 2 3 4
AUDIO 2 AUDIO 1
VIDEO OUTPUTVIDEO INPUT
VIDEO LOOP
1
2 4
3
POWER
USE ONLY WITH A 250V FUSE
FUSE: 500mA
AC ~230V/50Hz
POWER
INPUT OUTPUT1 2 3 4
AUDIO 1
VIDEO OUTPUTVIDEO INPUT
VIDEO LOOP
1
2
3
4
USE ONLY WITH A 250V FUSE
www.sams.rs
Made in Serbia
VAA-4a2L
CODE: 007.178
SN:
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION
RIZIK OD STRUJNOG UDARA
NE OTVARATI
UPOZORENJE
LEDs to indicate
the presence of power
+ V: red LED
- V: green LED
LEDs to indicate
the presence of power
+ V: red LED
- V: green LED
LEDs to indicate
the presence of power
+ V: red LED
- V: green LED
LED to indicate the presence of signal
1) GAIN - Trimer to correct the overall level of signals. Allows gain correction of ± 3dB for video and ± 6dB for audio.
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.
VAA-6a2l, front side
VAA-6a1l, rear side
VAA-6a2l, rear side
VAA-5a2l, rear side
VAA-5a1l, rear side
VAA-4a2l, rear side
VAA-4a1l, rear side
NOTE: The front side of the unit is the same for VAA-4a2l, VAA-5a2l and VAA-6a2l
Connect the power cord.
The device works only on AC ~ 230 V / 50 Hz.
Connect all necessary connectors
before the unit is turned on. Turn on the device
by pressing the switch.
Input+loop
Audio outputs CH1
Audio input CH1
Audio outputs CH2
Audio input CH2 Audio outputs CH1
Audio input CH1
Audio outputs CH2
Audio input CH2 Audio outputs CH1
Audio input CH1
Audio outputs CH1
Audio input CH1
Audio outputs CH1
Audio input CH1
Audio input/outputs CH2 Audio input/outputs CH1 Outputs
Input+loop Outputs
Input+loop Outputs
Input+loop Outputs
Input+loop Outputs
Input+loop Outputs
INSTALLATION

VAA
elektronik
VIDEO 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

VAA Sams elektronik d.o.o. • [email protected] • www.sams.rs
elektronik
15
Distribution ampliers
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
Audio distribution is factory set to 0dB input / 0dB output. 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)
AUDIO ADJUSTMENT
Put a thin screwdriver through an opening in the
panel.
It can be adjusted by turning the trimmer.
ACCESS TO ADJUST TRIMMER
This manual suits for next models
5
Table of contents
Other Sams Amplifier manuals