24. Other Input Related Spurious Responses, HP 8591EM

16.For each of the frequencies listed in Table 2-42, do the following:

a.Set the synthesized sweeper to the listed CW frequency by pressing

4RECALL5 1 for a CW frequency of 542.8 MHz or 4RECALL5 2 for a CW frequency of 1142.8 MHz.

b.Press 4SGL SWP5 and wait for the completion of a new sweep.

c.On the EMC analyzer, press 4MKR !5 MKR ! HIGH and record the marker-delta amplitude reading in Table 2-42 as the Actual MKR 1 Amplitude.

The Actual MKR 1 Amplitude should be greater than the Minimum MKR 1 Amplitude listed in the table below.

Note that the Minimum MKR 1 Amplitude is 10 dB more positive than the speci￿cation. This is due to the 10 dB change in reference level made in step 15.

Table 2-42. Image Responses

Synthesized Sweeper

TR

 

Actual MKR 1

Minimum MKR 1

CW Frequency

Entry

 

Amplitude (dBc)

Amplitude (dBc)

 

 

 

 

 

 

542.8 MHz

1

 

 

 

55

1142.8 MHz

2

 

 

 

55

 

 

 

 

 

 

 

 

 

17.Record both of the Actual MKR 1 Amplitude readings listed in Table 2-42 into the performance veri￿cation test record.

2-156 Performance Veri￿cation Tests