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HP IBASIC Program Example (DACBLOK)
115
HP E1340A High Speed Operation
To transfer Definite Length Block Data to the AFG requires that the data
sent with the
[SOURce:]LIST[:SEGMent]:VOLTage:DAC
contiguous. To do this, send no carriage return (CR) and line feed (LF)
before all the data is transferred.
1
!RE-SAVE"DACBLOK"
2
!This program downloads AFG amplitude data in the form of DAC codes
3
!(unsigned numbers). The data is sent in a IEEE-488.2 definite length
4
!block in 16-bit integer format. The waveform is a 4096 point ramp wave.
5
!
10
!Assign I/O paths between IBASIC and the E1340A.
20
ASSIGN @Afg TO 80910
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ASSIGN @Afg1 TO 80910;FORMAT OFF !path for binary data
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COM @Afg,@Afg1,INTEGER Waveform(1:4096)
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!
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!Set up error checking
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ON INTR 8 CALL Errmsg
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ENABLE INTR 8;2
90
OUTPUT @Afg;"*CLS"
100
OUTPUT @Afg;"*SRE 32"
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OUTPUT @Afg;"*ESE 60"
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!
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!Call the subprogram which resets the AFG.
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CALL Rst
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!
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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 5V" !scale amplitude
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!
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!Call subprogram which defines waveform segment A (ramp wave).
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CALL Ramp_wave
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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
300
END
310
!
command must be
!wait-for-arm state
!allow interrupt to be serviced
Chapter 6
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