Automatic UpLink Power Control System

UpLink Power Controller (principle of operation)

‘Rain Fade’ affects both transmitted signal and Beacon

signal by a similar amount.

Product Focus;Automatic UpLink Power Control (AUPC)

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UpLink Power Controller (principle of operation)

L-Band signal

Processing(Level Detection, Comparator &

Limiter)

UpLink Chain (from Modulator)

Beacon Signal Detection

LNB SHF signal BUC

L-Band signal (or IF 70/140MHz if UpConverter fitted).

Bypass option fixed

attenuator

UPC7001 UpLink Channel Compensation

Shows DC & 10MHz pass to BUC option.

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UpLink Power Controller (internal attenuation)

• Easy to use, cost effective solution to rain fade compensation.• Internal or external Beacon Receiver.• Fail safe by-pass option.• DC & 10MHz ‘pass’ option.

Beacon Receiver Signal (L-Band/ SHF)

Processing(Level Detection, Comparator &

Limiter) UpLink Chains

Beacon Signal Detection

UpLink Power Controller (external attenuation)

Beacon Receiver Signal (L-Band/ SHF)

Beacon Signal Detection

UpLink Chains

CAN-bus Connection

• Directly interfaces to Peak equipment in the UpLink chains via CANbus to provide a simple, cost effective solution to rain fade variations, without the need for additional RF cabling.• Full RS232/485 remote control .• Ethernet options supporting SNMP ,Embedded Web-server etc.

Processing(Level Detection, Comparator &

Limiter)5

UpLink Power Controller (physical attributes)

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Up to 4 ‘fixed’ Channels in 1RU, plusmodular 10-Channel expansion system in 2RU.

UpLink Power Controller (anti-scintillation)

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Traditional rain-fade rates of

change in minutes

Scintillation rates of change

in <1s

Relative rate of change in dB

-10

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Earth Station RF Equipment from Peak Communications Ltd.www.peakcom.co.uk