Rohde & Schwarz 1145.1010.04/05/06, Руководство по эксплуатации

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R&S
®
ZVA/ZVB/ZVT SENSe
1145.1084.12 6.215 E-6
[SENSe<Ch>:]FREQuency...
This subsystem sets frequency-related parameters, especially the measurement and display ranges for
the different sweep types, and controls the frequency-converting measurement modes (harmonic
distortion, mixer mode, etc.).
The frequency ranges for the different instrument models are listed below:
ZVA8 ZVA24
Start, Stop
300 kHz to 8 GHz 300 kHz to 24 GHz
Center > 300 kHz to < 8 GHz > 300 kHz to < 24 GHz
Span 10 mHz to 7,9997 GHz 10 mHz to 23,9997 GHz
Note: For a frequency sweep the range can be defined alternatively by a combination of Start/Stop
frequencies or a Center frequency and Span. In fixed frequency mode (power sweep or
Time/CW Mode; see [SENSe<Ch/Tr>:]FUNCtion[:ON]) the measurement frequency is set by
means of [SENSe<Ch>:]FREQuency:CW|FIXed.
[SENSe<Ch>:]FREQuency:CENTer <center_frequency>
Defines the center of the measurement and display range for a frequency sweep.
<Ch> Channel number. If unspecified the numeric suffix is set to 1.
<center_frequency>
Center frequency of the sweep.
Range [def. unit] Depending on the instrument model [Hz]. The increment
(parameters UP or DOWN) is 0.1 kHz.
*RST value Center of the analyzer's maximum frequency range: (f
MIN
+
f
MAX
)/2
SCPI, Command
Types
Confirmed, command or query.
Example:
FUNC "XFR:POW:RAT B1, A2"
Activate a frequency sweep and select the ratio B1/A2 as
measured parameter for channel and trace no. 1.
FREQ:CENT 100MHz
Set center frequency to 100 MHz.
FREQ:SPAN 50000
Set frequency span to 50 kHz.
The measurement range defined by means of the center frequency and the current span
([SENSe<Ch>:]FREQuency:SPAN) must not exceed the allowed frequency range of the
analyzer. If necessary, the span is reduced to min (Center – f
MIN
, f
MAX
– Center).