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5.2.1.1 Preamplifier / Attenuator
This module is both a preamplifier and a voltage controlled, broad band attenuator. It provides
the CMX25 with remote level control and leveling capability over the entire 0.01 to 1000 MHz
frequency range. With the front panel level control set at maximum output it has a nominal 7 dB
gain and can be adjusted with the front panel level control over a greater than 40 dB range.
The preamplifier is powered from a low voltage power supply that is independent of the main
power supply.
5.2.1.2 Power Amplifier
This amplifier consists of three amplification sections, the final stage having two cascaded high-
power, push-pull devices operating in parallel and combined through a transmission type
impedance transformer.
5.2.2 Band 2
5.2.2.1 Preamplifier / Attenuator
- Same amplifier as 5.2.1.1.
5.2.2.2 Driver Amplifier
This amplifier module consists of three cascaded single ended amplification stages and one push-
pull output stage. It can provide up to 10 Watts of drive power to the Power Amplifiers (PA).
5.2.2.3 Power Amplifier
This amplifier consists of two high power push - pull devices, operating in parallel and combined
through transmission type impedance transformers.
