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3 SCPI
3.3 Instrument subsystem command
77
[:SOURce]:PM:INTernal:SHAPe ......................................................................... 79
[:SOURce]:PM:INTernal:SWEep:TIME ............................................................... 80
[:SOURce]:PM:SOURce ..................................................................................... 80
[:SOURce]:PM:STATe ........................................................................................ 80
[:SOURce]:PM:BANDwidth|BWIDth
Function:
This command is used for setting PM signal bandwidth of the signal generator. In
NORMal mode, PM bandwidth is normal; in HIGH mode, it is from broadband.
Setting format:
[:SOURce]:PM:BANDwidth|BWIDth NORMal|HIGH
Query format:
[:SOURce]:PM:BANDwidth|BWIDth?
Parameter:
<Mode> Discrete data. Options for PM bandwidth type are:
NORMal PM bandwidth, normal,
HIGH PM bandwidth, broadband.
Example:
:PM:BWIDth NORM PM bandwidth is from broadband.
Reset status:
NORM
Key Entry:
【
FM/ΦM
】
—>[FM/PM]—>[PM BandWidth Normal HighBand]
[:SOURce]:PM:DEViation <Deviation>
Function:
This command sets PM Bias of the signal generator. It should be noted that PM Bias
varies in different frequency band.
Setting format:
[:SOURce]:PM:DEViation <val>
Query format:
[:SOURce]:PM:DEViation?
Parameter:
<Deviation> The relationship between PM Bias and PM BandWidth is as follow:
1465
Current frequency
PM BandWidth Normal PM BandWidth HighBand
100kHz - 250MHz
0 - 2.000rad
0
– 0.200rad
250MHz-500MHz
0 - 1.000rad
0
– 0.100rad
500MHz - 1GHz
0 - 2.000rad
0
– 0.200rad
1GHz - 2GHz
0 - 4.000rad
0
– 0.400rad
2GHz-3.2GHz
0 - 8.000rad
0
– 0.400rad
3.2GHz - 10GHz
0 - 16.000rad
0
– 1.600rad
10GHz-20GHz
0 - 32.000rad
0
– 3.200rad
20GHz-40GHz
0
– 64.000rad
0
– 6.400rad
40GHz-67GHz
0 - 128.000rad
0
– 12.800rad
Example:
:PM:DEViation 3rad PM deviation of the PM signal is 3rad.
Reset status:
0.001rad
Key Entry:
【
FM/ΦM
】
—>[Basic Config]—>[PM Bias]
[:SOURce]:PM:INTernal:FREQuency <Frequency>
Function:
This command is used for setting the internal modulation rate of PM in the signal
generator. Through this command, the first tone can be set when PM waveform is set
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