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C and QuickBASIC
Program Versions
77
Generating Arbitrary Waveforms with the HP E1340A
120
!Call the subprogram which resets the AFG.
130
CALL Rst
140
!
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!Set AFG parameters
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OUTPUT @Afg;"SOUR:FREQ:FIX 1E3;";!frequency
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OUTPUT @Afg;":SOUR:FUNC:SHAP USER;";!function
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OUTPUT @Afg;":SOUR:VOLT:LEV:IMM:AMPL 1.1V" !scale
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!
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!Call subprogram which defines waveform segment.
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CALL Damped_sine
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!
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!Select output sequence and initiate waveform
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OUTPUT @Afg;"SOUR:FUNC:USER A"
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OUTPUT @Afg;"INIT:IMM"
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!
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WAIT .1
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OFF INTR 8
290
END
300
!
310
SUB Damped_sine
320 Damped_sine: !Subprogram which defines a damped sine wave
330
COM @Afg,Waveform(*)
340
A=4/4096
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W=(2*PI)/50
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FOR T=1 TO 4096
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Waveform(T)=EXP(-A*T)*SIN(W*T)
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NEXT T
390
!
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OUTPUT @Afg;"SOUR:LIST:SEGM:SEL A"!select segment name
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OUTPUT @Afg;"SOUR:LIST:SEGM:VOLT";Waveform(*)!load
420
SUBEND
430
!
440
SUB Rst
510
SUB Errmsg
The C example program, SIN_D.C, is in directory " CPROG" and the
QuickBASIC example program, SIN_D.BAS, is in directory " QBPROG"
on the C and QuickBASIC example disk (part number E1340-10036).
amplitude
!wait-for-arm state
!allow interrupt to be serviced
waveform points
Chapter 3
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