Directional Coupler/Detector; Voltage Control Mode; Controls; Power Regulation - Advanced Energy Paramount MF 2 kW User Manual

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Advanced Energy

Directional Coupler/Detector

The directional coupler/detector samples the voltage and current of the RF power line
and a digital signal processor (DSP) is used to calculate the forward and reflected
power. The forward and reflected power can be thought of as the power flowing
toward the load and the power reflected back from the load. Forward power minus
reflected power is the power dissipated in the load and is called the load power. The
DSP uses the calculated values in the feedback control loop to control the power
supply output.
The Paramount MF 2 kW generator uses sophisticated signal processing to
compensate for or eliminate offsets and nonlinearities inherent in the generator. As a
result, the output power of the generator is accurate and linear. Forward, reflected,
and load power levels are displayed on the front panel and are provided to, or can be
accessed through, the generator's serial and user communication ports.

Voltage Control Mode

The Paramount MF 2 kW generator has the capability to control the amplitude of RF
output voltage at the load with the use of the AE Low Frequency Fixed Match and
voltage peak detector. The voltage from the peak detector is supplied to the generator
and used to control the inverter.

Controls

The control section controls the inverter that regulates the output power. This section
has limits and trip thresholds that prevent inverter failure.

POWER REGULATION

Regulation Overview

The Paramount MF 2 kW generator can regulate power based on either forward or
load power measurements. The method used by the generator is determined by User
port pin 8, referenced to pin 21 (FWD/LOAD POWER REGULATION). You can also
use command 3, set regulation mode, at the Host port to select the regulation mode.
The front panel display screen allows you to view operating data for forward,
reflected, and load power parameters.

Forward and Reflected Power

In a mismatched system, the load impedance does not match the connecting cable
impedance, which means there will always be a standing wave on the connecting
cable. Think of this standing wave as being created by the interference of two
57020114-00E
Paramount
Product Overview
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MF 2 kW Generator
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