R&S ZVB - Page 993

R&S
®
ZVA / R&S
®
ZVB / R&S
®
ZVT Command Reference
SCPI Command Reference
Operating Manual 1145.1084.12 – 30 978
*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.
SYST:COMM:RDEV:GEN1:DEF 'Ext. Gen. 1', 'SME02', 'gpib0', '21'
Configure an R&S SME02 generator as external generator no. 1, assigning the
name Ext. Gen. 1 and a GPIB address 21.
SOUR:FREQ:CONV:ARB:EFR ON, 1, 4, 1E+9, SWE
Switch the generator on and convert the generator frequency to the range
between 1.25 GHz and 1.275 GHz.
SOURce<Ch>:FREQuency<Pt>:CONVersion:ARBitrary:IFRequency <numerator>,
<denominator>, <offset>, CW | FIXed | SWEep
Defines the port-specific source frequency for frequency-converting measurements. The source frequency
is either a range (for frequency sweeps) or a CW frequency (for power, time and CW Mode sweeps).
The frequency formula is applied even if the analyzer returns an error message, because the
frequency is outside the allowed range.
<Ch>
Channel number.
<Pt>
Test port number of the analyzer. Note that the source frequencies at ports 1/2
and at ports 3/4 must be the same if the RF signal is simultaneously fed to two
coupled ports.
<numerator>
<denominator>
<offset>
Parameters of the frequency formula. The source frequency f
s
is calculated
according to
f
s
= <numerator>/<denominator>*f
b
. + <offset>
where f
b
represents the channel base frequency (parameter SWEep). For
parameters CW or FIXed, f
b
= 0.
In manual control, the <offset> is defined as a product of a ratio of two
integers times a multiple of 1 Hz.
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 [1]
<denominator> – Values are rounded to positive integer numbers; zero is not
allowed [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 – The full formula is applied. For frequency sweeps, the command
defines a sweep range.