47. Fast Time Domain Sweeps, HP 8591EM Option 101 and Option 301

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

4FREQUENCY5 300 4MHz5

4SPAN5 ZERO SPAN

4AMPLITUDE5 SCALE LOG LIN (LIN)

8.Set the signal generator AM switch to the AC position. If necessary, adjust the output amplitude of the signal generator to position the top of the modulated waveform approximately one division below top screen.

9.Set the EMC analyzer controls by pressing the following keys:

4SWEEP/TRIG5 Trigger VIDEO

4SWEEP/TRIG5 18 4ms5

10. Press the following EMC analyzer keys:

4SGL SWP5

4MKR !5 MKR ! HIGH

If necessary, press NEXT PEAK or NEXT PK LEFT until the marker is on the left-most complete signal peak. This is the \marked signal."

11.Press More 1 of 3 More 2 of 3 MARKER 1 , MARKER 1 , then press

NEXT PK RIGHT until the marker 1 is on the eighth signal.

12.Record the MKR 1 frequency reading in the performance test record as shown in Table 2-61. The MKR reading should be within the limits shown.

13.Repeat steps 10 through 12 for the remaining sweep time settings listed in Table 2-61.

2-316 Performance Veri￿cation Tests