Measurement-computing Personal488 rev.3.0 For DOS & Windows 3.Xi Manual de usuario Pagina 180

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II. SOFTWARE GUIDES - 9. Driver488/SUB 9F. QuickBASIC
Personal488 Users Manual, Rev. 3.0 II-165
Read the Driver488/SUB revision number
response$ = SPACE$ (256)
rv% = ioHello% (ieee%, response$)
PRINT response%
Set up interrupt pointers
ON PEN GOSUB isr
PEN ON
rv% = ioLightPen% (ieee%, 1)
Enable Driver488/SUB interrupt on Error or Service Request
rv% = ioArm% (ieee%, acSRQ)
Display the Driver488/SUB system status
rv% = ioStatus% (ieee%, substat)
CALL showstat (substat)
Put the ADC488 into remote mode
rv% = ioRemote% (adc%)
Clear the AC488
rv% = io Clear% (adc%)
Enable ADC488 SRQ on command errors
rv% = ioOutput& (adc%, M8X)
Send an invalid command to the ADC488
PRINT Sending invalid ADC command
rv% = ioOutput & (adc%, V13X)
Setup the ADC488:
Differential inputs (a0)
Scan group channel 1 (C1)
Compensated ASCII floating-point output format (G0)
Channel 1 range to +/-10V (R3)
One-shot trigger on talk (T6)
rv% = ioOutput& (adc%, A0C1G0R3T6X)
Wait for the ready bit of the ADC488 to be asserted
WHILE ((ioSPoll%(adc%) AND 32) = 0) : WEND
Display a reading
response$ = SPACE$ (256)
rv% = ioEnter& (adc%, response$)
voltage ! = VAL (response$)
PRINT ADC488 channel #1 reading value is ; voltage!
Display the average of 10 readings
sum ! = 0!
FOR i = 0 TO 9
response$ = SPACE$ (256)
rv% = ioEnter& (adc%, response$)
voltage ! = VAL (response$)
sum ! = sum! + voltage !
NEXT i
PRINT The average of 10 readings is ; sum! / 10!
Set up the ADC488 :
Compensated binary output format (G10)
100uSec scan interval (I3)
No pre-trigger scans, 100 post-trigger scans (n100)
Continuous trigger on GET (T1)
rv% = ioOutput& (adc%, G10I3N100T1X)
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