Agilent Technologies HP 70910A Podręcznik Użytkownika Pobierz pdf (Strona 61)

Chapter 3 61

Operation

Using an 8566B Spectrum Analyzer

Operation

Band Selection

1. If necessary, mate the 11974 to the spectrum analyzer being used for preselected

external mixing by using the Frequency Tracking Calibration procedure above.

2. Set the spectrum analyzer to the appropriate millimeter band by using the key

sequence listed below:

for an 11974A:

SHIFT ⇑ ⇑

for an 11974Q: SHIFT ⇑ ⇑ ⇑

for an 11974U: SHIFT ⇑ ⇑ ⇑ ⇑

for an 11974V: SHIFT ⇑ ⇑ ⇑ ⇑ ⇑

NOTE The above band selection key sequence must be used to enter the external

mixing band of operation. Do not enter in the center frequency of the band

directly.

Amplitude Calibration

The 8566B uses a single-point conversion-loss factor per band. The conversion-loss number

is saved with an instrument preset, when the band is exited, and with the SAVE and

RECALL functions.

Enter the conversion loss at the desired frequency from either the calibration label on the

bottom of the 11974 or the supplied calibration sheet using the following key sequences.

SHIFT, 5, and MHz

2. Enter the conversion loss value of the desired frequency, then terminate the entry with

dB.

Preselector Peaking

1. Place the active marker on the desired signal to be peaked using

PEAK SEARCH or

MARKER

NORMAL.

TIP To complete the preselector-peaking routine more quickly, place the signal at

center screen and reduce the frequency span until the sweep time is

approximately 200 ms.

2. Peak the desired signal by pressing

PRESEL PEAK.

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Agilent Technologies HP 70910A Podręcznik Użytkownika Strona 61