HP 8568B NTER, Distortion, AMPLITUDE), Intermodulation, 15. Spurious Responses Test, On the synthesized sweeper, key in, On the synthesized sweeper, adjust

15. Spurious Responses Test

IntermodulationDistortion

SPECTRUM ANALYZER

ATTENUATORATTENUATOR

DIRECTIONAL

50 MHz LON PASS FILTER

Figure 2-26. Intermodulation Distortion Test Setup11.Connect equipment as shown in Figure 2-26.12.Set the controls of the spectrum analyzer as follows:CENTER FREQUENCY . . . . . . . . . . . . . . . . . . . . . . . . . . . 29.5 MHz

FREQUENCY SPAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 MHz

REFERENCE LEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20 dBm

DISPLAY LINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OFF

13.On the synthesized sweeper, key in [cw 30 MHz, [POWER LEVEL], -4 dBm and use the ENTRY knob to position the peak of the displayed 30 MHz signal at the top CRT graticule line.

14.On the frequency synthesizer, key in [FREQUENCY) 29 MHz,

(AMPLITUDE) -4 dBm. Readjust the signal amplitude as necessary to position the peak of the displayed 29 MHz signal at the top CRT graticule line.

15. Set the controls of the spectrum analyzer as follows:

CENTER FREQUENCY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 MHz FREQUENCY SPAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500 Hz

16.On the spectrum analyzer, key in DISPLAY LINE (ENTER) -100 dBm, MARKER [PEAK SEARCH) to position a marker on the peak of the displayed 29 MHz signal.

17.On the frequency synthesizer, adjust the signal amplitude for a marker indication of -20.00 dBm.

18.On the spectrum analyzer, key in [CENTER FREQUENCY) 30 MHz, MARKER [PEAK SEARCH) to position a marker on the peak of the displayed 30 MHz signal.

19.On the synthesized sweeper, adjust the signal power level for a marker indication of -20.00 dBm.

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