Field Measurements 5-3 Measurement Setup
Vector Network Analyzer MG PN: 10580-00289 Rev. K 5-3
Setting the Start and Stop Frequencies
Set the Start Frequency by pressing Start Freq soft key and using the keypad, the arrow keys,
or the rotary knob to set a value in Hz, kHz, MHz, or GHz for the desired frequency. Set the
Stop Frequency by pressing the Stop Freq soft key.
The frequency range can also be set by using the Center Freq and Span soft keys. For
example, to set a frequency range of 1850 MHz to 1990 MHz, set the Center Frequency to
1920 MHz and the Frequency Span to 140 MHz.
Setting Data Points
Press the Sweep function hard key (main menu key), and then press the Data Points soft key
(submenu key). Use the rotary knob, the arrow keys, or the numeric keypad. When you use
the numeric keypad to enter a number, an Enter soft key appears in the menu. You can also
press the keypad Enter key. You can set any number of data points from 2 up to 4001.
Calibration
For accurate results, the instrument must be calibrated at ambient temperature after
allowing for warm up time (approximately 15 minutes) and before making any
measurements. Refer to “Calibration Considerations” on page 4-16.
The Existing Calibration Information list box is shown in Figure 7-21 on page 7-18.
After calibrating, you can reduce the frequency span or reduce the number of data points
without invalidating the calibration (refer to “Calibration Data and Indications”
on page 4-19).
Note
If a Start Frequency is entered that is higher than the current Stop Frequency, Stop
Frequency is automatically adjusted to be equal to the entered Start Frequency.
Similarly, if a Stop Frequency that is lower than the current Start Frequency is
entered, Start Frequency is automatically adjusted to be equal to the Stop
Frequency.
Caution
Increasing the frequency span or increasing the number of data points greater
than the values in the original calibration will invalidate the calibration.
1990 70– 1920= 1850 70+ 1920=
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