Agilent Technologies HP8648A Instrukcja Użytkownika Pobierz pdf (Strona 212)

Using the Tracking Generator

211

Measurement Procedure:

1 Connect the bridge or coupler as shown.

CAUTION: Do not exceed the connector’s rated input or permanent instrument damage

may result.

On the Test Set:

2 Press the PRESET key.

Using the knob and data entry keys:

3 Select the SPEC ANL screen.

4 From the Controls select Ant.

5 Set Center Freq to the center frequency of the antenna under test.

6 Set Span to view desired frequency range.

7 Set Ref Level to 0 dB (or greater).

8 From Controls, select Main, then select RF Gen from the Choices field.

9 From Controls select Track.

10 Set Amplitude to 0 dBm.

NOTE: Amplitude default of 0 dBm is typically sufficient for performing

measurements. The level can be changed as required to suit measurement

needs (e.g. increase measurement range, minimize incident input from other

sources, etc.). If Amplitude is changed, Ref Level will also have to be

changed.

On the Directional Coupler:

11 Verify that the LOAD port is open (or shorted).

Test Set Options Required

Spectrum Analyzer/Tracking Generator (option 102)

Additional Equipment

Required

Return Loss Bridge or Directional Coupler and an Antenna

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Agilent Technologies HP8648A Instrukcja Użytkownika Strona 212