Rohde & Schwarz 1145.1010.04/05/06, Operating Manual

Page: 679 / 813

R&S
®
ZVA/ZVB/ZVT SENSe
1145.1084.12 6.217 E-6
[SENSe<Ch>:]FREQuency:CONVersion:ARBitrary <numerator>, <denominator>,
<offset>, CW | FIXed | SWEep
Defines the receiver frequency for frequency-converting measurements. The receiver frequency is
either a range (for frequency sweeps) or a CW frequency (for power, time and
CW Mode sweeps). The
receiver frequency is valid for all ports.
<Ch> Channel number.
<numerator>
<denominator>
<offset>
Parameters of the frequency formula. The receiver frequency f
r
is
calculated according to
f
r
= <numerator>/<denominator>*f
b
. + <offset>
where f
b
represents the sweep range (for frequency sweeps,
parameter SWEep). For power, time and CW Mode sweeps
(parameters CW or FIXed), f
b
= 0.
The conversion formula for f
r
is ZVR-compatible but differs
from manual control where the ratio
<numerator>/<denominator> also multiplies the <offset>.
Range [def. unit] The converted frequency or frequency range must be within the
analyzer's frequency range, depending on the instrument model
[Hz]. In addition the following restrictions apply:
<numerator> – Values are rounded to positive or negative integer
numbers; zero is not allowed [1]
<denominator> – Values are rounded to positive integer numbers
[1]
<offset> – Values are rounded to (positive or negative) multiples of
1 Hz [Hz].
*RST value The default frequency/frequency range corresponds to the sweep
range or CW frequency of the analyzer, i.e.
<numerator> = <denominator> = 1
<offset> = 0 Hz
Sweep type
Parameters
SWEep – A frequency sweep is active, the command defines a
frequency range.
CW | FIXed – A power, time or
CW Mode sweeps is active, the
command defines a fixed frequency.
*RST value SWEep
SCPI, Command
Types
Device-specific, command or query.
Example:
*RST; FREQ:STAR 1E+9; STOP 1.1E+9
Reset the analyzer (activating a frequency sweep) and set the
sweep range between 1 GHz and 1.1 GHz.
SENS:FREQ:CONV:ARB 2, 1, 1E+9, SWE
Convert the receiver frequency to the range between 3 GHz and
3.2 GHz.