FM:INTernal:FUNCtion {SINusoid|SQUare|TRIangle……}
Set the modulating waveform of FM using SIN, SQU, TRI UP, RAMP or DOWN_RAMP waveforms.
FM:INTernal:FUNCtion?
Read the current modulating waveform of FM. The returned data are “SIN”, “SQU”, “TRI”,
“UP_RAMP”, “DOWN_RAMP”.
FM:INTernal:FREQuency <frequency>
Set the frequency of modulating signal of FM. The modulating frequency should be ≤10KHz when
internal modulating source is selected.
FM:INTernal:FREQuency?
Read the frequency of current modulating signal of FM.
FM:SOURce {INTernal|EXTernal}
Set modulating source of FM signal as internal (INTernal) or external (EXTernal).
FM:SOURce?
Read the current modulating source of FM.
FM:STATe {ON|OFF}
Turn on FM mode (ON), turn off FM mode (OFF).
FM:STATe?
Check the “on/off” state of FM mode. The returned data are “0” (OFF) or “1” (ON). It returns to
fixed frequency mode in “off” state.
Burst Mode instructions
1. Set the carrier using APPLy instructions or FUNCtion, FREQuency, VOLTage, VOLTAGE:
OFFSet instruction.
2. Set number of burst using BM: NCYCles <#cycles> instruction.
3. Set start phase of burst using BM: PHASe <degrees> instruction.
4. Set time interval between two bursts using BM:INTernal: SPACe <time> instruction.
5. Set trigger source of burst using BM: SOURce {INTernal|EXTernal|SINGle} instruction.
6. To turn on burst use the BM: STATe ON instruction.
BM:NCYCles <#cycles>
Set waveform numbers of burst. MAX≤10000.
BM:NCYCles?
Check number of bursts.
BM:PHASe <degrees>
Set start phase of burst in 0—360º in step of 0.1º.
BM:PHASe?
Check the start phase of burst.
BM:INTernal: SPACe <time>
Set time interval between two bursts.
BM:INTernal: SPACe?
Check time interval between two bursts.
BM:SOURce {INTernal|EXTernal|SINGle}
Set trigger source of burst as internal (INTernal), external (EXTernal) or single (SINGle).
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