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d)
e)
f)
g)
h)
i)
4.4.2
Measurement of Harmonics
Sweep Generator
10 KHz – 35 MHz
RF Output
Figure 4-2.
1.) Equipment Required:
a)
Sweep/Signal Generator
b)
Calorimetric Power Meter HP435B
The material contained in this document is the property of Electronics & Innovation Ltd., it is
subject to change without notice.
Ocotber 2008
Adjust the output level of the sweep/generator for full vertical
deflection on the oscilloscope face.
Calibrate the scope face to show 3 dB in 1 dB steps by
attenuating the sweep/generator in 1 dB.
Return sweep/generator output level to full deflection. Rotate the
step attenuator (CCW) so that the output is reduced by 50 dB.
Reconnect the A300 into the test set-up of Figure 4-1.
Place the A300 power switch to the "ON" position.
Observe the gain versus frequency sweep on the oscilloscope.
The average gain should be greater 55 dB
•
The gain variation should be within the 3 dB as shown on the
•
oscilloscope.
Power Meter
30 dB Attenuator
30 dB
coupler
Spectrum
12
Revision D
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