Agilent Technologies HP 70910A Podręcznik Użytkownika Pobierz pdf (Strona 64)

64 Chapter 3

Operation

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

Operation

Frequency Tracking Calibration

Use this procedure to align the frequency of the 11974 tracking filter to the tuned

frequency of the spectrum analyzer. Follow this procedure whenever the 11974 is

connected to a different spectrum analyzer. Periodically check the calibration.

1. Set the 11974 rear-panel switches

70907B (this switch also applies to the 70909 and

70910A) and

LEDS to the ON position, and the other two switches to the OFF position,

to properly scale the tune ramp of the spectrum analyzer.

2. When the 71000 is set up with multiple active input ports available, configure the

analyzer for a preselected external mixer by using the following key sequence:

State

select input

IN “n” EM “Model Number”

NOTE If the State key is not available when you press MENU, skip configuration

step 2.

3. Select the frequency band of operation by using the following key sequence:

State

ext mixer

fulband KAQUVE

Press the softkey for the appropriate frequency band. (INSTR PRESET will reset this

to the default active input, see INSTR PRESET on page 68.)

4. Initialize the preselector-peak DAC to the center of its range by pressing

State,

pre-select, PRESEL DAC, and 128, then terminate the entry with the ENTER softkey.

5. Set the analyzer to zero span by pressing

Freq and SPAN and entering 0 Hz.

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

center-frequency settings in unused state registers after performing step a

and step c.

1. “Model Number” will be either 70907A, 70909A, or 70910A; “n” is a number indicating the order in

which the input devices were found by the input device search.

1 2 ... 59 60 61 62 63 64 65 66 67 68 69 ... 153 154

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Agilent Technologies HP 70910A Podręcznik Użytkownika Strona 64