Agilent Technologies HP 70910A Podręcznik Użytkownika Pobierz pdf (Strona 108)

108 Chapter 4

Performance Tests

Frequency Tracking Calibration with an 8566B Spectrum Analyzer

Performance Tests

7. Set the spectrum analyzer center frequency to the low end of the band by pressing

CENTER FREQUENCY and entering the corresponding value for the mixer listed below.

Save this setting in an unused register.

for an 11974A: 26.5 GHz

for an 11974Q: 33.0 GHz

for an 11974U: 40.0 GHz

for an 11974V: 50.0 GHz

8. On the rear panel of the 11974, adjust the corresponding potentiometer for the mixer

listed below, until one or both of the green LEDs are lit.

for an 11974A: “26.5 GHz Set”

for an 11974Q: “33.0 GHz Set”

for an 11974U: “40.0 GHz Set”

for an 11974V: “50.0 GHz Set”

9. Change the spectrum analyzer center frequency to the high end of the band as indicated

below, then save this setting in an unused register:

for an 11974A: 40 GHz

for an 11974Q: 50 GHz

for an 11974U: 60 GHz

for an 11974V: 75 GHz

10.On the rear panel of the 11974, adjust the corresponding potentiometer for the mixer

listed below, until one or both of the green LEDs are lit.

for an 11974A: “40 GHz Set”

for an 11974Q: “50 GHz Set”

for an 11974U: “60 GHz Set”

for an 11974V: “75 GHz Set”

11.Repeat step 7 through step 10 until the green LEDs are lit at both frequencies without

additional adjustments.

NOTE Upon completion of this adjustment procedure, and before taking data, use

the spectrum analyzer preselector-peak function to peak the 11974 filter on

signals to be measured.

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Agilent Technologies HP 70910A Podręcznik Użytkownika Strona 108