Comdel CX600 Series, Manual

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II. Description / Specification
The CX600/13.56 RF amplifier operates at a frequency of 13.56 MHz. The power source produces maximum transfer of
power into a 50 ohm resistive load and is designed to withstand large deviations in load impedance without failure.
The primary features of the CX600 series are its solid-state design, small physical size and reliability.
CX600 series power amplifiers can be supplied with internal frequency sources or may be driven from external
frequency sources having a 50 ohm output and a digital drive level of 0-5 V.
The CX600 series amplifier is constructed with two main sections. The dc power section is contained in the center of
the unit. This section includes the filter capacitor, rectifier and regulators as well as the single-phase 208 Vac power
transformer. These components are operated at about half of their rated outputs to insure the high reliability of this
section. The RF section consists of the internal/external oscillator frequency control board (OCB), driver, one PA600
power amplifier on an air- cooled aluminum heat sink, and an output filter/harmonic filter. All components are used well
below their dissipation ratings for long life and low maintenance operation.
A. Electrical Specifications
Nominal Input:
208 Vac, 1 phase
50/60 Hz
8 A
1. AC Input Voltage Range: 190-225Vac; no neutral; single phase with protective earth (PE) ground.
2. AC Line Frequency: 50/60Hz nominal; 47 to 63 Hz range.
3. AC Input Current: 8 amps rms maximum.
4. Output Characteristics:
4.1 0 to 600W continuous forward power at the unit’s rear bulkhead RF connector into a 50ohm load.
4.2 The forward power out is to track the command set point for any load conditions where the
reflected power is less than: 100W.
4.3 Accuracy/Regulation: +/- 3.0% of set point, from 10% to 100% max output, as measured by either
the actual output powe r and/or the forward analog read back signal
4.4 Linearity: +/- 3.0% deviation from a straight line for successive requested set point power
increment changes, from 10% to 100% max output, as measured by either the actual output
power and/or the forward analog read back signal.
4.5 Short Term Stability: +/- 1.0% for any given output power set point during one continuous hour
of output.
4.6 Long Term Stability: +/- 5.0% for any given output power set point during 3 years of continuous
output.
4.7 Rise Time: less than 100ms; from leading edge of enable signal to 90% of power level requested.
4.8 Zero Set point: less than 1.0W actual output power and less than 1.0W read back power when
set point signal is at zero or at a negative voltage.