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Optical equipment for cable TV

Optical receivers ARCOTEL GA8040(OR) series

1
Manufacturer:
Options receiver/node:
AGC
arcotel_ga8040.jpg

Purpose:

The optical receiver with increased output level GA8040(OR) is intended for work in hybrid fiber-coaxial networks of cable television with deep penetration of optics. The receiver performs converting of the optical amplitude-modulated signal into the radio-frequency (RF) wideband signal of TV range and following signal amplification for its distribution through the coaxial network.


Main characteristics and technical parameters:
                high sensibility and wide range of input optical signals;

  • ten-stage LED input signal level indicator (step 1 dB);
  • AGC system on input optic signal;
  • powerful output amplifier AsGa Power Doubler provides minimal distortions at multi-channel transfer:
  • two RF outputs with replaceable divider supplied as one unit;
  • possibility of setting of preliminary AGC slope by smooth regulator;
  • versions with local and remote supply;
  • cast housing with developed finning
  • impulse power supply;
  • output sockets 5/8" equipped with adapters for F type;
  • optimal ratio price/quality;

Name

GA8040(OR)

Note

Wave working length

1100-1600 nm

Input optical signal level

- 7…+2 dBm

1

Optical connector type

SC/APC

2

Reflection coefficient on input

> 45 dB

Frequency band

47-862 MHz

Unevenness of amplitude-frequency characteristic

± 0.75 dB

Smooth regulation of output level

0 ± -15 dB

Smooth regulation of a slope

0 ± 15 dB

Ratio signal/noise

≥51 dB

3

Working output level (at -7...+2 dBm at input)

≥105 dBmkV

4

Maximum output level

≥108 dBmkV

Composite distortions level

CTB

≤-65 dB

5

CSO

≤-60 dB

Test point attenuation

-20 dB

Output impedance

75 Ω

Number of outputs

2

6

Supply voltage, remote/local

35-85 V, 50 Hz /220 V, 50 Hz

Consumed power

≤15 W

Dimensions/weight

185х140х91 mm / 1kg

Working temperature range

-30…+50 °С

Note:
    1. Recommended input level of the optic signal Maximum allowed input level +3dBm.
    2. FC/APC connector, tailor-made.
    3. Typical value at the input signal level  -2 dBm. C/N ratio of optical line of transfer depends on whole number of parameters: input optical power, index of optical modulation, fiber line length, noise characteristics of a transmitter.
    4. Supported by the AGC system at input level  -7…+2 dBm 
    5. At translation of 99 channels PAL and output level of signal - 108 dBmkV.
    6. The divider had been initially installed providing a second output -10 dB. There is a 4/4 dB divider in a complete.

For more detail information about main differences between various models of optical receivers from ARCOTEL, and their technical characteristic, please, visit   a site.

Structural scheme of optical receiver GA8040;

ga8040or-shema.jpg