User`s manual
:FREQuency
[SOURce:]LIST2:FREQuency <freq_list> defines the list of sample rates or
frequencies to be generated when
[SOURce:]FREQuency[1]:MODE is set to LIST.
Parameters The <freq_list> has one of the two following formats:
1. A comma-separated list of frequency values.
2. An IEEE-488.2 definite or indefinite length block containing the frequency
values in IEEE-754 64-bit floating-point format.
The maximum length of the list is 256 frequency values.
The legal range for frequency values is given below. Default units are hertz.
MINimum and MAXimum cannot be used with this command.
The minimum frequency is 0 Hz for all waveform shapes.
– Arbitrary Waveforms and Sine Wave Outputs: The maximum frequency is
the current reference oscillator frequency divided by 4.
– Square Wave Outputs: The maximum frequency is the current reference
oscillator frequency divided by 16.
– Ramps and Triangle Outputs: The maximum frequency is the current
reference oscillator frequency divided by 4 further divided by the
[SOURce:]RAMP:POINts value.
For non-sine wave outputs,, multiply the maximum frequency by 2 if frequency
doubling is in effect (see the
[SOURce:]FREQuency[1]:RANGe command).
Comments • When changing the frequency list length when [SOURce:]FREQuency[1]:MODE
LIST
is set, the [SOURce:]SWEep:TIME or the TRIGger:SWEep:TIMer value
remains the same, depending on which command was most recently sent. The
other value is changed based on the new frequency list length.
• Executable when Initiated: Query form only
• Coupling Group: Frequency
• Related Commands: TRIGger[:STARt]:SOURce,
[SOURce:]FREQuency[1]:MODE, [SOURce:]SWEep
•
*RST Condition: Unaffected
• Power-On Condition: No frequency list is defined
Example Defining a Frequency List
LIST2:FREQ 1000,10e3,100e3,1 MHz Defines the frequency list.
[SOURce:]LIST2
Chapter 8 Command Reference 359