45. Residual Responses, HP 8594EM

4BW5 300 4Hz5

AVG BW AUTO MAN (MAN) 300 4Hz5

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

3.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 and to the right of the marker in Table 2-57.

1 MHz to 2.9 GHz

4.Connect the 300 MHz CAL OUT to the RF INPUT.

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

4FREQUENCY5 300 4MHz5

4SPAN5 10 4MHz5

4MKR !5 MKR ! HIGH

4MKR5 More 1 of 3 MK TRACK ON OFF (ON)

4SPAN5 1 4kHz5

6.Wait for the AUTO ZOOM message to disappear, then press the following EMC analyzer keys:

4BW5 300 4Hz5

4SWEEP/TRIG5 1 4SEC5

4AMPLITUDE5 87 4dB￿V5

ATTEN AUTO MAN (MAN) 0 4dB5

7. Press the following EMC analyzer keys:

4SGL SWP5

4MKR !5 MKR ! HIGH More 1 of 3 More 2 of 3 MARKER 1

4SPAN5 10 4MHz5

4SGL SWP5

4MKR !5 MKR ! HIGH

8. Record the marker-1 reading below as the MEAS UNCAL Amplitude Error.

2-304 Performance Veri￿cation Tests