46. Residual Responses, HP 8593EM, HP 8595EM, and HP 8596EM

17.Press 4SGL SWP5 and wait for a new sweep to ￿nish. Look for any residual responses at or above the display line.

If a residual is suspected, press 4SGL SWP5 again. A residual response will persist on successive sweeps, but a noise peak will not. Note the frequency and amplitude of any residual responses above the display line in Table 2-59.

18.Press 4FREQUENCY5, 4 * 5 (step-up key), to step to the next frequency and repeat step 17.

19.Repeat step 18 until the range from 2.75 GHz to 6.5 GHz has been checked. (This requires 372 additional frequency steps.)

Table 2-59.

Residual Responses above Display Line Worksheet

 

Frequency

 

Amplitude

 

(MHz)

 

(dB￿V)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Con￿rming Residuals

20.Set the EMC analyzer center frequency to a residual frequency recorded in Table 2-59, the press the following keys:

4PRESET5

4AMPLITUDE5 47 4dB￿V5 ATTEN AUTO MAN (MAN) 0 4dB5 4SPAN5 20 4kHz5

4SGL SWP5

4DISPLAY5 DSP LINE ON OFF (ON) 17 4dB￿V5

21.Press 4SGL SWP5 and wait for a new sweep to ￿nish. Look for any residual responses at or above the display line.

2-312 Performance Veri￿cation Tests