58.Tracking Generator Feedthrough, HP 8591EM Option 010

6.Press 4SGL SWP5 , wait for the completion of a new sweep, then press 4MKR !5

MKR ! HIGH .

Subtract the MKR amplitude reading from 87 dB￿V, then enter the result in the EMC analyzer as the REF LVL OFFSET. For example, if the marker reads 86.79 dB￿V, enter +0.21 dB.

87 dB￿V 0 (86.79 dB￿V) = +0.21 dB

Then press the following EMC analyzer keys:

4AMPLITUDE5 More 1 of 3 More 2 of 3 REF LVL OFFSET (enter

calculated value)

7.Connect one 50 ￿ termination to the EMC analyzer INPUT 50 ￿ and another to the tracking generator's RF OUT 50 ￿.

8.Press 4AUX/USER5, Track Gen , then SRC PWR ON OFF (OFF).

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

4FREQUENCY5 0 4Hz5

4SPAN5 10 4MHz5

4AMPLITUDE5 97 4dB￿V5

4BW5 AVG BW AUTO MAN (AUTO)

4MKR5 More 1 of 2 MARKER ALL OFF

4SWEEP/TRIG5 SWEEP CONT SGL (CONT)

10. Press the following EMC analyzer keys:

4MKR !5 MKR ! HIGH

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

4MKR !5 More 1 of 3 MARKER !REF LVL

4SPAN5 2 4MHz5

Wait for the AUTO ZOOM message to disappear, then press 4MKR5 More 1 of 3 MK TRACK ON OFF (OFF).

11.Press 4FREQUENCY5 and adjust the center frequency until the LO feedthrough peak is on the left-most graticule line, then set the EMC analyzer as follows:

4SPAN5 50 4kHz5

4AMPLITUDE5 57 4dB￿V5

4BW5 AVG BW AUTO MAN (MAN) 30 4Hz5

Performance Veri￿cation Tests 2-369