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).

6On 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