GW Instek GSP-827 User Manual - Manual (Page 39)

2.7GHz Spectrum Analyzer Operation Manual
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38
Zero Span
When Zero Span is performed, the measuring frequency will stop sweeping, and only fixes on
Center frequency. An example of AM (amplitude modulation) signal is described above. The
modulating signal is at 100Hz sine wave. Since the measuring frequency is fixed, the display
will present the amplitude variation of AM signal, which is at 100Hz in this case.
Last Span
Return to the last span by using this key.
InputZ
Cal
1
Zero
Span
RBW:4MHz
VBW:10 kHz
Center:100.0MHz
Span:Zero Span
Sweep:100.0ms
Span Ref Lvl: -30.0 dBm
-30.0
-40.0
-50.0
-60.0
-70.0
-80.0
-90.0
-110.0
-100.0
SAT JAN 28, 2003 14:30:25
INT:REF
AMPL CAL
Full
Span
Zero
Span
Last
Span
Span
Start:99.0MHz
RBW:300 kHz
Stop:101.0MH
VBW:100 kHz
Center:100.0MHz
Span:2.0MHz
Sweep:200.0ms
Span:20.0MHz
Span Ref Lvl: -30.0 dBm
-30.0
-40.0
-50.0
-60.0
-70.0
-80.0
-90.0
-110.0
-100.0
SAT JAN 28, 2003 14:30:25
INT:REF
AMPL CAL
Full
Span
Zero
Span
Last
Span
Last
Span
1