Agilent Technologies HP 70910A Betriebsanweisung PDF herunterladen (Seite 60)

60 Chapter 3

Operation

Using an 8566B Spectrum Analyzer

Operation

3. On the spectrum analyzer, set the preselector DAC to 32 (the center of its 0–63 range)

by pressing

SHIFT, GHz, 32, and Hz.

4. Set the spectrum analyzer to a frequency span of 0 Hz by pressing

FREQUENCY, SPAN, 0,

and

Hz.

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

center-frequency settings as indicated in steps 5 and 7 in unused state

registers.

5. 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,

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

6. 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”

7. 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

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: “40 GHz SET”

for an 11974Q: “50 GHz SET”

for an 11974U: “60 GHz SET”

for an 11974V: “75 GHz SET”

9. Repeat step 5 through step 8 until green lights are lit at both frequencies without any

additional adjustments.

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Agilent Technologies HP 70910A Betriebsanweisung Seite 60