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15. Spurious Responses Test
signal for a marker indication of -20.00 dBm (-30.0 dBm at the
input mixer with 10 dBm of input attenuation).
6
On the spectrum analyzer, key in MARKER
@,
CCENTER
FREQUENCY) 560 MHz, MARKER
CPEAK
SEARCH) to position
a second marker on the peak of the second harmonic distortion
product of the 280 MHz input signal. The response should be
below the display line
(>70
dB
below the input signal level).
Second Harmonic
dBm
7. On the synthesized sweeper, key in
~POWER
LEVEL)
ato
decrease
the amplitude of the 280 MHz signal by 10
dB.
8. On the spectrum analyzer, key in MARKER
loFF),
CCENTER
FREQUENCY) 280 MHz, [REFERENCE LEVEL) -30 dBm,
DISPLAY LINE [ENTER] -105 dBm, MARKER
CPEAK
SEARCH) to
position a marker on the peak of the displayed 280 MHz signal.
9. On the synthesized sweeper, press [POWER LEVEL] and use the
ENTRY knob to adjust the amplitude of the displayed 280 MHz
signal for a marker indication of -30.00 dBm (-40.0 dBm at the
input mixer with 10 dBm of input attenuation).
10. On the spectrum analyzer, key in MARKER
a],
[CENTER FREQUENCY) 840 MHz, MARKER [PEAK SEARCH) to position
a second marker on the peak of the third harmonic distortion
product of the 280 MHz input signal. The response should be
below the display line (>75
dB
below the input signal level).
Third Harmonic
dBm
Performance Tests 2-51