13. Scale Fidelity, HP 8590 EM-Series

16.Press 4PRESET5 on the EMC analyzer, then wait for the preset routine to ￿nish. Set the EMC analyzer by pressing the following keys:

4AMPLITUDE5 SCALE LOG LIN (LIN)

More 1 of 3 Amptd Units Volts

4FREQUENCY5 50 4MHz5

4SPAN5 10 4MHz5

4MKR !5 MARKER ! HIGH

4MKR5 More 1 of 3 MK TRACK ON OFF (ON)

4SPAN5 50 4kHz5

Wait for the auto zoom routine to ￿nish, then set the IF bandwidth and the averaging bandwidth by pressing the following keys:

4BW5

IF BW AUTO MAN (MAN) 3 4kHz5

AVG BW AUTO MAN (MAN) 30 4Hz5

17.If necessary, adjust the 1 dB step attenuator attenuation until the MKR reads approximately 223.6 mV. It may be necessary to decrease the resolution of the amplitude increment of the synthesizer/level generator to 0.01 dB to obtain a MKR reading of 223.6 mV 6 0.4 mV.

18.On the synthesizer/level generator, press AMPLITUDE, then use the increment keys to adjust the amplitude until the EMC analyzer MKR amplitude reads 223.6 mV 60.4 mV.

19.On the EMC analyzer, press 4MKR !5, MARKER ! HIGH , 4MKR5,

More 1 of 3 , MK TRACK ON OFF (OFF).

20.Set the synthesizer/level generator amplitude increment to 3 dB.

21.On the synthesizer/level generator, press AMPLITUDE, then increment down to step the synthesizer/level generator to the next lowest nominal amplitude listed in Table 2-9.

22.Record the MKR amplitude reading in the performance veri￿cation test record as indicated in Table 2-9. The MKR amplitude should be within the limits shown.

23.Repeat steps 21 and 22 for the remaining Synthesizer/Level Generator Nominal Amplitudes listed in Table 2-9.

2-66 Performance Veri￿cation Tests