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The material contained in this document is the property of Electronics & Innovation Ltd., it is
subject to change without notice.
September 2010
10
Revision A
Performance limits quoted are for guidance only and should not be taken for
guaranteed performance specifications unless they are also quoted in the
Specification Section 1.2.
4.2 PERFORMANCE CHECKS
To determine the amplifier’s performance carry out the following procedure.
4.2.1 Initial Check
The following check can be made after repair and adjustments or
whenever the condition of the unit is in question.
a.
Connect AC power supply. Switch on power and observe that the
display initializes.
b.
Connect a sweep generator capable of sweeping the frequency range
300 KHz to 35 MHz, to the input connector.
c.
Adjust the output level of the sweep generator so that a 50 ohm video
detector connected at the output of the unit will not be damaged by
excessive power output. (Reference section 4.4.1 for set up.)
d.
Observe the gain versus frequency ripple on an oscilloscope calibrated
in decibels. The gain variation must be not more than +/- 1.5 dB over
the frequency range.
e.
Connect a calorimetric power meter through a 60 dB 1000 watt
attenuator to the output connector. Adjust the input CW signal to any
frequency between 300 kHz and 35 MHz for 1000 watts output.
f.
Observe the harmonic distortion of the output, properly attenuated, on
a spectrum analyzer. The harmonic components contributed by the
amplifier should be better than 22 dB down from the fundamental.