User`s manual

CHAPTER 4 PROGRAMMING TECBNIQUES

4.5. Multiple Device Triggering

10 'FILE NAME : EXAMPLE.5

20 'Program Example : MULTIPLE DEVICE TRIGGERING

30 '

40 'Purpose : This program triggers 2 voltmeters at the same

50 'time to make the measurement simultaneously.

60 '

70 'Remark : This program is written for the HP3478A DVM. If

80 ' another model of voltmeter is used, please check

90 ' the operating manual and make necessary

100 ' modification to this program.

110 '

120 'Initialization

130 '

140 CLS

150 DEF SEG=&HD000

160 ABORT%=9 : ENTER%=6 : OUTPUT%=3 : SEND%=36 : STATUS%=42

170 TRIGGER%=48

180 ADDR1%=23 : ADDR2%=24

190 CALL ABORT%

200 '

210 '

220 'Set the DVM’s

230 '

240 D$=l’FlT3R2N5'’

250 CALL OUTPUT%(ADDR1%,D$) ‘ Send DVM #1 setting string

260 CALL OUTPUT%(ADDR2%,D$) ‘ Send DVM #2 setting string

270 GOSUB 550 ‘ Error check

280 IF ER%<>0 TuEN PRINT “Error when setting DVM.” : END

290 '

300 '

310 'Measurement start

320 '

330 FOR I=1 TO 10

340 '

350 CMD$=’UNL UNT MTA LISTEN 23 24 GET”

360 CALL SEND%(CMD$) ‘ Trigger the DVM’s

370 '

380 D1$=SPACE$(40)

390 CALL ENTER%(ADDR1%,D$) ‘ Enter DVM #1 reading

400 GOSUB 550 ‘ Error check

410 IF ER%<>0 TuEN PRINT “Error when reading DVM #1.” : END