R&S ZNB Series - Page 1333

Command reference
R&S
®
ZNB/ZNBT
1333User Manual 1173.9163.02 ─ 62
<Numerator> 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.
Note: The <Offset> parameter also includes the "Offset Ratio"
in manual control.
Range: The converted frequency or frequency range must
be within the external generator's frequency range.
In addition the <Numerator> values are rounded to
positive or negative integer numbers.
*RST: The default frequency/frequency range corresponds
to the sweep range or CW frequency of the ana-
lyzer, i.e. <Numerator> = <Denominator> = 1, <Off-
set> = 0 Hz.
Default unit: 1
<Denominator> See above, <Numerator>
Range: The converted frequency or frequency range must
be within the external generator's frequency range.
In addition the <Denominator> values are rounded
to positive integer numbers; zero is not allowed.
*RST: 1
Default unit: 1
<Offset> See above, <Numerator>
Range: The converted frequency or frequency range must
be within the external generator's frequency range.
In addition the <Offset> values are rounded to (pos-
itive or negative) multiples of 1 Hz.
*RST: 0
Default unit: Hz
<SweepType> CW | FIXed | SWEep
SWEep - the full formula is applied. For frequency sweeps, the
command defines a sweep range.
CW | FIXed - the reduced formula with f
b
= 0 is applied; the com-
mand defines a fixed frequency.
*RST: SWEep
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.
Manual operation: See "Frequency Conversion Formula" on page 566
SCPI command reference