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VAA

elektronik

Sams elektronik d.o.o. • sams@sams.rs • www.sams.rs

12

Distribution amplifiers

I

89

ANALOG AUDIO DISTRIBUTION AMPLIFIERS

• Sams elektr

onik d.o

.o

. • 48 Zivka Da

vido

vica st. • 11050 B

elgr

ade • S

erbia •

• +381 11 3806 253; +381 11 2402 212 • sams@sams.rs • www

.sams.rs •

VAA-6a1l a 1RU device with video and audio distribution 1x6. This is the amplifier 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 amplifiers 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

Specifications and designs are subject to change without notice

VAA-6a1l

Analog video / 1ch analog audio distribution 

amplifier 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

Summary of Contents for VAA4a1l

Page 1: ...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 sams sams rs www sams rs USER MANUAL FOR USE AND MAINTENANCE Read the instructions before using the device Keep this manual for periodic usage ...

Page 2: ...ufacturer servicer has not completed repair or replacement within a reasonable time or if the manufacturer servicer did not perform repair or replacement without significant 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 s...

Page 3: ... 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...

Page 4: ...s 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...

Page 5: ...lektronik 5 Distribution amplifiers 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 Page Description TABLE OF CONTENTS ...

Page 6: ... 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...

Page 7: ...al 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 Specifications and designs are subject to change without not...

Page 8: ...dance 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 Specifications and designs are subject to change without notice VAA 4a1l ...

Page 9: ...ut 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...

Page 10: ...ominal 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 Specifications and designs are subject to change without...

Page 11: ... 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 Specifications and designs are subject to change without notice VAA 6a2l Analog vi...

Page 12: ...ominal 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 Specifications and designs are subject to change without...

Page 13: ...V 50Hz POWER INPUT OUTPUT 1 2 3 4 AUDIO 1 VIDEO OUTPUT VIDEO 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 pre...

Page 14: ... 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 no...

Page 15: ...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 screw...

Page 16: ...VAA elektronik Sams elektronik d o o sams sams rs www sams rs 16 Distribution amplifiers NOTES ...

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