Command Reference
R&S
®
ZNC
587
User Manual 1173.9557.02 ─ 13
[SENSe<Ch>:]FREQuency:CENTer
<CenterFreq>
Defines the center of the measurement and display range for a frequency sweep (sweep
range). The default center frequency is the center of the analyzer's maximum frequency
range: (f
MIN
+ f
MAX
)/2. The range is listed in table
Suffix:
<Ch>
.
Channel number
Parameters:
<CenterFreq>
Center frequency of the sweep
Increment: 0.1 kHz
Default unit: Hz
Example:
*RST; :SYST:FREQ? MIN; :SYST:FREQ? MAX
Query the frequency range of the analyzer.
FREQ:CENT 100MHz
Set center frequency to 100 MHz.
FREQ:SPAN 50000
Set frequency span to 50 kHz.
Manual operation:
See
"Start / Stop / Center / Span Frequency (Power / Time)"
Note:
The measurement range defined by means of the center frequency and the current
span (
) must not exceed the allowed frequency range
of the analyzer. If necessary, the span is reduced to min (<CenterFreq>
–
f
MIN
, f
MAX
–
<CenterFreq>).
[SENSe<Ch>:]FREQuency:CONVersion
<ConversionMode>
Enables a frequency conversion measurement mode for channel
<Ch>
.
Suffix:
<Ch>
.
Channel number
Parameters:
<ConversionMode>
FUNDamental | ARBitrary
FUNDamental - measurement of the fundamental signal (no fre-
quency-converting mode). This selection cancels all port-specific
frequency and power settings (see example).
ARBitrary - frequency conversion mode (arbitrary port frequen-
cies). This mode is automatically activated when a port-specific
frequency is defined.
MIXer scalar mixer mode. The mixer mode is configured using the
[SENSe<Ch>:]FREQuency:CONVersion:MIXer...
com-
mands.
*RST:
FUNDamental
Example:
See
SCPI Command Reference