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Amplifiers

ARCOTEL Amplifiers, series TA8334, DA8134

1
Manufacturer:
Type of amplifier:
TA8334 ARCOTEL DA8134
TA8334 DA8134

High power wide range base amplifiers  for CATV; amplifiers  use double-balanced (Power Doubler) hybrid output amplifier of NXP brand; changeable modules of attenuator and equalizer at the input; changeable interstage modules of attenuator and equalizer for providing optimal operation of the amplifier (TA8334); switched built in interstage equalizer 0/6 dB (DA8134); changeable modules of backward channel amplifier and diplexing filters; amplifiers  have static power supply unit and are designed for distant feed (30…60 VВ) or local supply (220 В/50-60 Hz); input and output contact sockets are coupled with  switches 5/8” to F, that provide a good flexibility in commutation; distant feed pass-through on both outputs up to 6 А (connected via F Contact sockets up to 2 А) with possible commutation (changeable fuse-elements); discharge arrestors at the input and output for protection against voltage surge; molded case with IP55 protection class for inner and outer installation; checkpoints at inputs and outputs; models with distant feed and local supply; individual level adjustment and amplitude-frequency characteristic tilt in backward channel; built in automatic gain control module  – models TA8334-ALC-60V and TA8334-ALC-220V, with automatic switch of operation mode – manual/automatic and changeable module of pilot tone frequency filter; a specialized hybrid module of NXP brand is used in backward channel amplifiers .

Advantages:

  • high power wide range base amplifiers  for CATV;
  • amplifiers  use double-balanced (Power Doubler) hybrid output amplifier ofNXP brand (former PHILIPS);
  • changeable modules of attenuator and equalizer at the input;
  • changeable interstage modules of attenuator and equalizer for providing optimal operation of the amplifier (TA8334);
  • switched built in interstage equalizer 0/6 dB (DA8134);
  • changeable modules of backward channel amplifier and diplexing filters;
  • amplifiers  have static power supply unit and are designed for distant feed (30…60 VВ) or local supply (220 В/50-60 Hz);
  • input and output contact sockets are coupled with  switches 5/8” to F, that provides a big flexibility in commutation;
  • distant feed pass-through on both outputs up to 6 А (connected via F Contact sockets up to 2 А) with possible commutation (changeable fuse-elements);
  • discharge arrestors at the input and output for protection against voltage surge; 
  • molded case with IP55 protection class for inner and outer installation;
  • checkpoints at inputs and outputs;
  • models with distant feed and local supply;
  • individual level adjustment and amplitude-frequency characteristic tilt in backward channel;
  • built in automatic gain control module  – models TA8334-ALC-60V and TA8334-ALC-220V, with automatic switch of operation mode – manual/automatic and changeable module of pilot tone frequency filter;
  • a specialized hybrid module of NXP brand (former PHILIPS) is used in backward channel amplifiers .

Technical specifications:

Title

TA8334-ALC-60V, TA8334-ALC-220V

DA8134-60-V, DA8134-220V

Frequency range

Forward channel, MHz

47-862

Backward channel*, MHz

5-30/65

Effective gain, dB

34

Adjustment range of the input attenuator and  equalizer, dB

0-18

Adjustment range of the interstage attenuator, dB

fix 1-20 (with an interval 1dB) or variable

fix 1-20 (with an  interval 1dB )

Adjustment range of the interstage equalizer, dB

fix 6-18 (with an  interval 3dB)

0/6 switch

Noise figure, dB

8

Automatic gain control adjustment range, dB

±4

-

Pilot tone frequency of automatic gain control

471** MHz (21 chan.)

-

Maximum output level according to DIN45004B, dBmkV

123

Composite distortion level***

CTB, dB

-61

-60

CSO, dB

-60

-59

Reflectance factor at the input and output, dB

14

Amplitude-frequency characteristic unevenness, dB

±1

Operating temperature range

-20° ÷ +50° C

Dimensions, mm / weight, kg

315×215×112 / 4.5

270×215×118 / 3

* - defined by the changeable diplexing filter.

** - or other customized.

*** - at transmission of 84 channels and output level of 102 dBmkV.

Amplifier block-diagram, series TA8334-ALC-60-V:

Блок-схема усилителя серии TA8334-ALC-60-V

Amplifier block-diagram, series DA8134-60V:

Блок-схема усилителя серии DA8134-60V