DRAKE EH24 User Manual download pdf (Page 60)

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ATVCA Amplifier User Manual

Superior Broadcast ATVCA Amplier

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User Manual

Rev. 1.0 - 22/11/10

ATVCA

7.2.3 RF Pre-Driver Amplier Card

This is the rst stage of RF amplication. Works with power below 1W and has a

gain of about 18dB. It ‘s a class A amplier, with a feature of high linearity.

It has an RF input, an RF output and a power connector.

7.2.4 RF Driver Amplier Card

The driver is an RF amplier that can drive the RF nal. Works with power of about

10 watts and has a gain of about 15dB. As for the pre-driver module, this also has

a feature of high linearity.

It has an RF input, an RF output and a power connector.

7.2.5 RF Module Card

This card is the last stage of RF amplication. It has a rated power output of 500Wps

and is congured to work in class A / B.

It has an RF input, an RF output and a power connector.

7.2.6 Splitter

This module is used to split the output signal of the driver to pilot two RF module.

It has an RF input, two RF outputs and an unbalanced load of suitable size.

7.2.7 Combiner

This module is used to sum the output signal of two RF ampliers. It has two RF

inputs, an RF output and an unmbalanced load of suitable size. It has features

of high isolation between the two RF inputs and it is able to combine power up to

1000W

7.2.8 Directional Coupler

This card delivers the amplied RF signal to antenna and makes reading of

forward and reected power. The taken measurements are delivered to interface

card. The reading head is able to detect the peak sync or the rms value and has

a high linearity.

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DRAKE EH24 User Manual Page 60