52. Tracking Generator Level Flatness, HP 8591EM Option 010

Procedure

1.Connect the Type N cable between the RF OUT 50 ￿ and INPUT 50 ￿ connectors on the EMC analyzer. See Figure 2-76.

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

4FREQUENCY5 300 4MHz5

CF STEP AUTO MAN (MAN) 100 4MHz5

4SPAN5 ZERO SPAN

3.On the EMC analyzer, press 4MKR5, 4AUX/USER5, Track Gen , SRC PWR ON OFF (ON), and enter 102 4dB￿V5 .

4.On the EMC analyzer, press TRACKING PEAK . Wait for the PEAKING message to disappear.

5.Zero and calibrate the measuring receiver and 100 kHz to 1800 MHz power sensor in log mode (power reads out in dBm), as described in the measuring receiver operation manual. Enter the power sensor's 300 MHz Cal Factor into the measuring receiver.

6.Disconnect the Type N cable from the RF OUT 50 ￿ and connect the 100 kHz to 4.2 GHz power sensor to the RF OUT 50 ￿.

7.On the EMC analyzer, press 96 4dB￿V5, 4SGL SWP5.

8.Press RATIO on the measuring receiver. The measuring receiver readout is now in power levels relative to the power level at 300 MHz.

9.Set the EMC analyzer center frequency to 100 kHz. Press 4SGL SWP5.

10.Enter the appropriate power sensor Cal Factor into the measuring receiver as indicated in Table 2-65.

11.Record the power level displayed on the measuring receiver as the Level Flatness in Table 2-65.

12.Repeat steps 9 through 11 to measure the ￿atness at each center frequency setting listed in Table 2-65. The 4*5 (step-up key) may be used to tune to center frequencies above 100 MHz.

2-336 Performance Veri￿cation Tests