WinSystems PCM-AIO, Руководство по эксплуатации, Страница: 18 / 43

/* SAM PLE AP PLI CA TION */
/* Read All Eight Chan nels as Sin gle/Uni & store in in te ger
Ar ray vari able re sults[8]. */
/* read & store the re sult.*/
/* re sult[chan nel] = inp(0x100) | ((inp(0x101)&15)<8);*/
/* Start next con ver sion */
/* ++chan nel &= 7;*/
/* outp(0x100,chan nel);*/
outp(0x20,0x20); /* Non- Specific EOI */
}
2.14
D/A Output Connector
The fig ure be low de fines the pins on the D/A out put con nec tor J3.
2.15
D/A Voltage Reference and Output Selection
Each of the D/A chan nels on the PCM- AIO can be jumpered for ei ther a +5VDC or -
5VDC ref er ence and for ei ther uni po lar or bi po lar op era tion. The fol low ing chart shows
the ap pro pri ate jumper po si tions for these op tions.
UNI PO LAR/BI PO LAR JUMPER SE LEC TION
RANGE CHAN NEL 0 CHAN NEL 1
0 to +5VDC J6 3-4 J6 7-8
J5 2-3 J4 2-3
-5V to +5V
J6 1-2 J6 5-6
J5 1-2 J4 1-2
Page 2-10 OPERATIONS MANUAL PCM-AIO 980723
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Channel 0
GND
N/C
Channel 1
GND
N/C
N/C
GND
N/C
N/C
GND
N/C
GND
GND
N/C
N/C
GND
N/C
N/C
GND
N/C
N/C
GND
N/C
N/C
GND
J3