Measurements
R&S
®
FSW
112User Manual 1173.9411.02 ─ 19
Zero Span
A sweep in the time domain at the specified (center) frequency, i.e. the frequency span
is set to zero. The display shows the time on the x-axis and the signal level on the y-
axis, as on an oscilloscope. On the time axis, the grid lines correspond to 1/10 of the
current sweep time.
Use the general measurement settings to configure the measurement, e.g. via the
"Overview" (see chapter 6, "Common Measurement Settings", on page 312).
Most result evaluations can also be used for zero span measurements, although some
functions (e.g. markers) may work slightly differently and some may not be available. If
so, this will be indicated in the function descriptions (see chapter 7, "Common Analysis
and Display Functions", on page 440).
Remote command:
[SENSe:]FREQuency:SPAN on page 833
INITiate[:IMMediate] on page 694
INITiate:CONTinuous on page 694
Ch Power ACLR
Measures the active channel or adjacent-channel power for one or more carrier sig-
nals, depending on the current measurement configuration, and opens a submenu to
configure the channel power measurement.
For details see chapter 5.3, "Channel Power and Adjacent-Channel Power (ACLR)
Measurement", on page 135.
Remote command:
CALC:MARK:FUNC:POW:SEL ACP, see CALCulate<n>:MARKer<m>:FUNCtion:
POWer:SELect on page 698
Results:
CALC:MARK:FUNC:POW:RES? ACP, see CALCulate:MARKer:FUNCtion:
POWer<sb>:RESult? on page 696
chapter 11.5.3, "Measuring the Channel Power and ACLR", on page 700
C/N, C/No
Measures the carrier/noise ratio and opens a submenu to configure the measurement.
Measurements without (C/N) and measurements with reference to the bandwidth
(C/No) are possible.
Carrier/noise measurement is only possible in the frequency domain (span > 0).
For details see chapter 5.4, "Carrier-to-Noise Measurements", on page 184.
Remote command:
CALC:MARK:FUNC:POW:SEL CN | CN0CALCulate<n>:MARKer<m>:FUNCtion:
POWer:SELect on page 698
Results:
CALC:MARK:FUNC:POW:RES? CN | CN0, see CALCulate:MARKer:FUNCtion:
POWer<sb>:RESult? on page 696
chapter 11.5.4, "Measuring the Carrier-to-Noise Ratio", on page 726
Available Measurement Functions
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