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Optical equipment for cable TV

TELESTE AC 500 Amplifying platform

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Teleste AC500

The AC500 optical Amplifying platform is the youngest basic model in the "ACCESS" family. The AS500 platform has one active output stage and the possibility of splitting the output signal in two directions through the integrated splitter or coupler. In the minimum configuration AC500 is a powerful trunk amplifier, which can later be upgraded to an optical node. Upgrading is carried out by inserting the optical modules of the forward channel receiver and backward channel transmitter. Upgrading is performed quickly and easily.

The required modules can be pre-installed at the plant. Upgrading can be easily done on the operating network on-site directly.

Block diagram:

Key features:

Cost-effective platform with the ability to be upgraded to the optical node.

Powerful trunk amplifier on the GaAsPD technology with a high output level.

 Extremely high linearity and low level of intermodulation products (CTB, CSO, XMOD) at high gain.

Output signal can be split by the insert of the 2 RF-output splitter or couplers.

2 main outputs with the passage of remote supply current up to 8 A.

Different types of plug-in modules of optical receivers that are optimized for different levels of optical input power.

Wide range of inserts of optical backward channel transmitters of 1310 and 1550nm, 8 types of transmitters with a DFB-laser and CWDM technology.

Interstage slope adjustment by the frequency response equalizer.

Adjustments for input - the slope by the frequency response equalizer and transmission coefficient by the attenuator.

Wide range of the inserts of equalizers and attenuators.

Plug-in module of the powerful amplifier of backward channel.
Possibility of injection of a test signal of the backward channel through control data points.

Developed means of remote monitoring.

Availability of monitoring modules compatible with an open HMS protocol.

Monitoring modules with integrated signal level meter provide remote measurement of the output level of each analog or digital channel.

Remote reduction in the signal level or a complete shutdown of the backward channel (OFF / - 6 / 0 dB) at the coaxial segment damage by ingress noise.

Remote measurement of remote power voltage in a line.

 Remote measurement of the key parameters: output voltage of a power supply unit, temperature in the case, input optical power, the current of a laser optical transmitter.

Remote identification of unauthorized opening of the case.
The platform configuration is kept in the memory system of monitoring.

Technical Specifications:

TRUNK AMPLIFIER

Technology

GaAsPD

Forward channel

Frequency range, MHz

47 /54/70 / 85...862

Return losses, dB

20

Gain, dB

31.. .39

Input attenuator adjustment range, dB

20

Input equalizer adjustment range, dB

25

Interstage slope, dB

8

Irregularity of the frequency response, dB

±0,4

Group delay, ns

2

Signal attenuation in a checkpoint, dB

20

Noise factor, dB

7,7

Output level DIN45004, dBuV

127,5

Output level CTB, CENELEC 42 channels, dBuV

113,0

Output level CSO, CENELEC 42 channels, dBuV

114,0

Backward channel

Frequency range, MHz

5...30 / 42 / 50 / 65

Return losses, dB

18

Gain (active / passive insert), dB

21 / - 6,5

Switch position to control ingress noise, dB

0 / - 6 / < - 50

Gainadjustmentrange, dB

20

Slopeadjustmentrange, dB

7

Irregularity of the frequency response,dB

± 0,5

Noise factor, dB

8,5

Output level DIN45004, dBuV

113,0

OPTICAL NODE

Forward channel

Wavelength, nm

1290...1600

Optical input power, dBm

- 7...+2

Output level, dBuV

109

Linearity, dB

±0,6

Spectral noise density, pА/Hz2

7

Backward channel

Input level forOMI=4%, dBuV

62

GENERAL CHARACTERISTICS

Hum modulation levelat least, dB

- 70

Maximum current of pass, А/ port

8,0

Power supply remote, V

~ 27...65 V, ±33...90

Power supply locally, V

~ 205...255

Power consumption(amplifier / optical node), W

15/21

EMC (electromagnetic compatibility)

according to EN 50083-2

Protection class (amplifier / optical node)

IP67/IP54

Operating temperature range, °С

- 40 ... + 55

Dimensions, mm

220 Χ 255 Χ 100

Weight, kg

3,0

Input / output connectors

PG11

Checkpoint connectors

F-socket