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3 SCPI
3.3 Instrument subsystem command
78
to DualSinc, and the start frequency can be set when FM waveform is set to
SweepSinc. It should be noted that, when PM Source is set to External, the internal
modulation rate can not be set. For related commands, see
―
:PM:INTernal:SHAPe
‖,―
:PM:SOURce
‖.
Setting format:
[:SOURce]:PM:INTernal:FREQuency <val>
Query format:
[:SOURce]:PM:INTernal:FREQuency?
Parameter:
<Frequency> The PM modulation rate ranges of different waveforms are:
Sine wave:
[0.005Hz
,
10.000000000MHz],
Square wave:
[0.005Hz
,
10.000000000MHz],
Triangular wave:
[0.005Hz
,
10.000000000MHz],
Zigzagwave:
[0.005Hz
,
10.000000000MHz],
Noise:
[0.005Hz
,
10.000000000MHz],
Sweep sine:
[0.01Hz
,
10.000000000MHz],
Dual sine:
[0.01Hz
,
10.000000000MHz].
Example:
:PM:INTernal:FREQuency 300kHz
PM modulation rate is 300kHz.
Reset status:
0.001MHz
Key Entry:
【
FM/ΦM
】
—>[Basic Config]—>[FM Rate]
[:SOURce]:PM:INTernal:FREQuency:ALTernate <Frequency>
Function:
This command is used for setting the second tone when PM waveform is set to DualSinc,
or the stop frequency when PM waveform is set to SweepSinc. For PM waveform, see
the command ―
:AM:INTernal:SHAPe
‖.
Setting format:
[:SOURce]:PM:INTernal:FREQuency:ALTernate <.val>
Query format:
[:SOURce]:PM:INTernal:FREQuency:ALTernate?
Parameter:
<Frequency> The frequency ranges of different PM waveforms are:
Sweep sine: [0.02Hz
,
1.000000000MHz],
Dual sine: [0.02Hz
,
1.000000000MHz],
Example:
:PM:INTernal:FREQuency:ALTernate 500kHz
Alternate frequency is 500kHz.
Key Entry:
【
FM/ΦM
】
—>[Sweep Sinc]—> [Freq Stop]
【
FM/ΦM
】
—>[Dual Sinc]—>[Frequency2]
[:SOURce]:PM:INTernal:FREQuency:ALTernate:AMPLitude:PERCent <Pert>
Function:
This command is used for setting the percentage of amplitude of second tone to that of
total output signal in dual sine waveform when PM Waveform is set to DualSinc. For
example, if the second tone accounts for 20% of the total waveform power, the first
tone will account for 80% of the total power output.
Setting format:
[:SOURce]:PM:INTernal:FREQuency:ALTernate:AMPLitude:PERCent <val>
Query format:
[:SOURce]:PM:INTernal:FREQuency:ALTernate:AMPLitude:PERCent?
Содержание 1465 Series
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