Agilent Technologies HP 70910A Guia do Utilizador descarregar pdf (Página 65)

Chapter 3 65

Operation

Using an 71000 Series Spectrum Analyzer with an 70907B, 70909A, or 70910A

Operation

6. To adjust the tracking between the 71000 and the 11974, perform the following steps:

a. Set the spectrum analyzer center frequency by pressing

Freq and CENTER and

entering the corresponding start frequency value for the mixer listed below, then

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

b. 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”

c. Change the spectrum analyzer center frequency to the stop frequency value

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

d. 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”

e. Repeat step a through step d until green lights are lit at both frequencies without

additional adjustments.

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Agilent Technologies HP 70910A Guia do Utilizador Página 65