3-2 VNA First Time Use - Setting the Frequency Range Chapter 3 — Vector Network Analyzer
3-2 MS20xxA VNA Master UG 10580-00166 Rev. C
The measurements included for S21 Transmission are:
•Log Magnitude
•Phase
•Group Delay S21
Field Menu measurements include:
•VSWR
•Return Loss
•Cable Loss
• DTF Return Loss
• DTF VSWR
•2-Port Gain
• Smith Chart
•1-Port Phase
•2-Port Phase
Setting the Frequency Range
Regardless of the type of measurement that is being made, the frequency range for the
desired measurement must be set before calibrating the VNA Master. Changing the
frequency after calibrating the VNA Master will invalidate the calibration. Press the
Freq/Dist
function hard key (below the display) to bring up the Frequency (
Freq) menu (on page 3-33).
Setting the Start and Stop Frequencies
Set the Start Frequency by pressing Start Freq soft key and entering the desired frequency in
Hz, kHz, MHz, or GHz using the keypad, the arrow keys, or the rotary knob.
Set the Stop Frequency by pressing the
Stop Freq soft key and entering the desired frequency
in Hz, kHz, MHz, or GHz using the keypad, the arrow keys, or the rotary knob.
The frequency range can also be set using the
Center Freq and Freq Span soft keys. For example,
to set a frequency range of 1850 to 1990 MHz, set the Center Frequency to 1920 MHz and the
Frequency Span to 140 MHz.
Setting a Signal Standard
The Signal Standard list contains common frequency standards and displays the standard
name, frequency of operation, and channel number.
Note
If a Start Frequency is entered that is higher than the current Stop Frequency,
Stop Frequency will automatically adjust 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 will automatically adjust to be equal to the
Stop Frequency.
10580-00166C.book Page 2 Thursday, February 21, 2008 12:52 PM
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