Command Reference
R&S
®
ZNC
620
User Manual 1173.9557.02 ─ 13
<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 (param-
eter
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 pos-
itive or negative integer numbers.
*RST:
The default frequency/frequency range corresponds
to the sweep range or CW frequency of the analyzer,
i.e. <Numerator> = <Denominator> = 1, <Offset> = 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 (positive
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.
SCPI Command Reference