3-7 VNA Key Functions - Freq/Dist Menu Chapter 3 — Vector Network Analyzer
3-34 MS20xxA VNA Master UG 10580-00166 Rev. C
Center Frequency
Press the
Freq key followed by the Center Freq soft key and enter the desired frequency
using the keypad, the arrow keys, or the rotary knob. If entering a frequency using the
keypad, then the soft key labels change to
GHz, MHz, kHz, and Hz. Select the appropriate
units key. Selecting the
Enter key has the same affect as using the MHz soft key.
Span
Press the
Freq key followed by the Span soft key and enter the desired span. The Span
menu is used to set the frequency range over which the instrument will sweep. For the
VNA Master, the span can be set from 0 Hz to the maximum frequency of the unit.
The soft key shows the current value for span in units of GHz, MHz, kHz, or Hz. When
the
Span button is pressed, span becomes the active parameter and may be changed.
Use the keypad, the directional arrow keys or the rotary knob to increase or decrease
the span frequency. If the span is changed using the Up/Down arrow keys, then the
span changes by the value of the Frequency Step for each key press.
Signal Standard
Use the Up/Down arrow keys or the rotary knob to highlight a signal standard and
press
Enter to select.
When a signal standard is selected, the center frequency and span (for the first channel
of the particular standard) are automatically tuned. Other settings, such as channel
spacing and integration bandwidth, are also automatically entered. Appendix A
contains a table of the signal standards that are in the instrument firmware.
Channel #
Use the Up/Down arrow keys, the keypad, or the rotary knob to select a channel
number for the selected signal standard. The center of the channel is tuned to the
center of the display screen.
10580-00166C.book Page 34 Thursday, February 21, 2008 12:52 PM
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