Tektronix WCA200A, User Manual

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Tutorial
WCA230A & WCA280A User Manual
2- 35
The center frequency is set to 1.5 GHz, and span is set to 15 MHz when you
power on the analyzer. Change the settings of center frequency and span to
display the waveform around 800 MHz.
1. Press the FREQUENCY/CHANNEL key on the front panel.
FREQUENCY/CHANNEL key
The FREQUENCY/CHANNEL menu, shown in Figure 2--31, is displayed on
the right side of the screen. Notice that the Frequency menu item is available for
entering the numeric value for center frequency.
Center Freq
(Hz)
XXX
Indicates that the general purpose knob
is available
Numeric value input field
Figure 2- 31: Menu items for numeric value input
You can change the value using the general purpose knob or enter the value using
the numeric value entry keypad, shown in Figure 2--32.
2.
Enter the new center frequency at 800 MHz. As the interval between
1.5 GHz (current setting) and 800 MHz is wide, it is more convenient to use
the keypad here.
Press
8 0 0 MHz
, in order, on the keypad.
The GHz , MHz , kHz , and Hz keys also function as the enter key. When you
press any of these keys, the numeric value you enter will be set immediately.
If you enter incorrect values, clear them using the
BKSP
(back space) key and
then enter the correct digit.
Setting Center Frequency
and Span