Tektronix WCA200A, User Manual

Page: 147 / 454

Spectrum Analysis (S/A Mode)
WCA230A & WCA280A User Manual
3- 21
Table 3--3 shows the features of the real-time mode compared with the normal
spectrum analysis.
Table 3- 3: Features of the real-time mode
Item Normal spectrum analysis Real-time mode
Span Up to 3 GHz (arbitrary value can be set) Up to 15 MHz (1-2-5 sequence)
Trigger Only the Repeat menu item available All the Trigger menu items available
RBW/FFT FFT points: 64 to 8192 (powers of 2)
RBW: 1 Hz to 10 MHz
FFT points: 1024 fixed
RBW: No RBW process
FFT overlap capability
Timing No timing parameters Acquisition Length and Spectrum Offset
can be set
The following steps show the basic procedure for real-time spectrum analysis
with spectrogram:
1. Press the S/A key on the front panel.
2.
Press the
Real Time S/A
side key. The spectrum is displayed concurrently
with the spectrogram.
3. Display the spectrum waveform of the measurement signal:
NOTE
. For details on setting frequency, span, and amplitude, refer to Setting
Frequency and Span on page 3--119 and Setting Amplitude on page 3--127.
For details on setting trigger, refer to Trigger on page 3--147.
a. Set the frequency by pressing the FREQUENCY/CHANNEL key on
the front panel.
b. Set the span by pressing the SPAN key on the front panel.
Table 3--4 shows the span setting range.
Table 3- 4: Span setting range
Measurement band
1
Setting range
RF 100 Hz to 10 MHz (1-2-5 sequence) and 15 MHz
Baseband 100 Hz to 20 MHz (1-2-5 sequence)
1
Baseband: DC to 20 MHz; RF: 15 MHz to 3 GHz (WCA230A) / 8 GHz (WCA280A)
Basic Procedure