RIGOL DG1000Z Series - Manual (Page 111)

Chapter 2 Command System RIGOL
DG1000Z Programming Guide 2-99
[:SOURce[<n>]]:FREQuency:STOP
Syntax [:SOURce[<n>]]:FREQuency:STOP {<frequency>|MINimum|MAXimum}
[:SOURce[<n>]]:FREQuency:STOP? [MINimum|MAXimum]
Description Set the stop frequency of the sweep function of the specified channel.
Query the stop frequency of the sweep function of the specified channel.
Parameter Name Type Range Default
[<n>] Discrete 1|2 1
<frequency> Real
The frequency range of the
current waveform of the
specified channel
1kHz
Explanation  The start frequency ( [:SOURce[<n>]]:FREQuency:STARt ) and stop frequency
is the frequency upper limit and lower limit of the frequency sweep. The signal
generator always sweeps from the start frequency to the stop frequency and
then returns to the start frequency. When the start frequency is lower than the
stop frequency, the signal generator sweeps from low frequency to high
frequency; when the start frequency is greater than the stop frequency, the
signal generator sweeps from high frequency to low frequency; when the start
frequency is equal to the stop frequency, the signal generator outputs at the
fixed frequency.
 When [:SOURce[<n>]] or [<n>] is omitted, the system sets the related
parameters of CH1 by default.
 The sine, square, ramp and arbitrary waveform (except DC) can generate
sweep output and the range of the stop frequency <frequency> differs for
different sweep waveform.
 The start frequency, stop frequency, center frequency and frequency span
fulfills the following relation.
|) (|
stop start center
F F F
+ = ;
|) (|
start stop span
F F F
− =
Wherein,
center
F
——center frequency;
span
F
—— frequency span;
start
F
—— start frequency;
stop
F
—— stop frequency.
 After the “Stop Frequency” is modified, the signal generator will output the
sweep waveform from the specified “Start Frequency”. In large-scale sweep,
the amplitude characteristic of the output signal might change.
Return Format The query returns the stop frequency in scientific notation with 7 effective digits, for
example, 9.000000E+02 (the stop frequency is 900Hz).
Example :SOUR1:FREQ:STOP 900 /*Set the stop frequency of the sweep function of CH1
to 900Hz*/
:SOUR1:FREQ:STOP? /*Query the stop frequency of the sweep function of
CH1 and the query returns 9.000000E+02*/
Related
Command
[:SOURce[<n>]]:FREQuency:STARt