Agilent Technologies HP 70910A Podręcznik Użytkownika Pobierz pdf (Strona 73)

Chapter 3 73

Operation

Using 8563A, 8561B, 8560A, or 8560 E/EC-Series Spectrum Analyzers

Operation

8. Set the spectrum analyzer center frequency by pressing FREQUENCY, CENTER FREQ and

entering the corresponding value for the mixer listed below:

for an 11974A: 40 GHz

for an 11974Q: 50 GHz

for an 11974U: 60 GHz

for an 11974V: 75 GHz

9. Initialize the preselector-peak DAC at the end of the band by using the following key

sequence:

AUX CTRL

EXTERNAL MIXER

PRESEL PEAK

PRESEL MAN ADJ

128 Hz

NOTE Due to the repetitive nature of this procedure, it may be helpful to save the

center-frequency settings in unused state registers as indicated in step 9 and

step 11.

10.Set the spectrum analyzer center frequency by pressing

FREQUENCY, CENTER FREQ and

entering the corresponding 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

11.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”

1 2 ... 68 69 70 71 72 73 74 75 76 77 78 ... 153 154

Brak uwag

Agilent Technologies HP 70910A Podręcznik Użytkownika Strona 73