41. Displayed Average Noise Level, HP 8594EM

4MHz

10.Press the following EMC analyzer keys:

4FREQUENCY5 4 4MHz5

4SGL SWP5

Wait for the completion of a new sweep.

11. Press the following EMC analyzer keys:

4DISPLAY5 DSP LINE ON OFF (ON)

Adjust the display line so that it is centered on the average trace noise, ignoring any residual responses (refer to the Residual Responses veri￿cation test for any suspect residuals).

12.Record the display line amplitude setting as TR Entry 2 of the performance veri￿cation test record as the noise level at 4 MHz. The average noise level should be less than the speci￿ed limit.

5 MHz to 2.9 GHz

13. Press the following EMC analyzer keys:

4FREQUENCY5 START FREQ 5 4MHz5

STOP FREQ 2.9 4GHz5

4BW5 1 4MHz5

AVG BW AUTO MAN (MAN) 10 4kHz5

4SWEEP/TRIG5 SWEEP CONT SGL (CONT)

14.Press 4FREQUENCY5 and adjust the start frequency setting, if necessary, to place the LO feedthrough just o￿-screen to the left.

15.Press the following EMC analyzer keys:

4SGL SWP5

4TRACE5 CLEAR WRITE A

More 1 of 4 More 2 of 4 VID AVG ON OFF (ON) 10 4Hz5

Wait until AVG 10 is displayed to the left of the graticule (the EMC analyzer will take ten sweeps, then stop).

Performance Veri￿cation Tests 2-283