54. Harmonic Spurious Outputs, HP 8591EM Option 010

REFERENCE LEVEL :: :: :: :: ::: :: :: :: ::: :: :: :: ::: :: :: :: :: ::: :: :: :: : +5 dBm

RES BW : ::: :: :: :: :: ::: :: :: :: ::: :: :: :: :: ::: :: :: :: ::: :: :: :: :: ::: :: :: :: : 30 kHz

LOG dB/DIV : :: :: :: ::: :: :: :: :: ::: :: :: :: ::: :: :: :: ::: :: :: :: :: ::: :: :: :: ::: 10 dB

7.Set up the microwave spectrum analyzer by performing the following steps:

Note that the following steps are for an HP 8566A/B microwave spectrum analyzer, the steps may be di￿erent if you are using another microwave spectrum analyzer.

a.Press PEAK SEARCH and SIGNAL TRACK (ON). Wait for the signal to be displayed at center screen.

b.Press PEAK SEARCH, CF STEP SIZE 10 MHz, CENTER FREQUENCY, then SIGNAL TRACK (OFF).

c.Press CENTER FREQUENCY and the step-up key to tune to the second harmonic. Press PEAK SEARCH. Record the marker amplitude reading in Table 2-70 as the 2nd Harmonic Level for the 10 MHz Tracking Generator Output Frequency.

d.Perform this step only if the Tracking Generator Output Frequency is less than 600 MHz. Press CENTER FREQUENCY and the step-up key to tune to the third harmonic. Press PEAK SEARCH. Record the marker

amplitude reading in Table 2-70 as the 3rd Harmonic Level for the 10 MHz Tracking Generator Output Frequency.

e. Press MARKER (OFF).

8.Change the microwave spectrum analyzer center frequency to the next frequency listed in Table 2-70, then repeat step 7. Note that the microwave spectrum analyzer frequency is the same as the Tracking Generator Output Frequency (STEP SIZE = TG FREQ).

Table 2-70. Harmonic Spurious Responses Worksheet

Tracking Generator

2nd Harmonic Level

3rd Harmonic Level

Frequency

(dBc)

(dBc)

 

 

 

10MHz

100 MHz

300 MHz

850 MHz

 

N/A

 

 

 

 

9.Locate the most positive 2nd Harmonic Level in Table 2-70 and record as TR Entry 1 of the performance veri￿cation test record.

2-348 Performance Veri￿cation Tests