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// Reset counter to known state ibwrite(counter,

“*rst;*cls”);

// Setup for period measurement ibwrite(counter, “FUNC

‘PER 1’”);

// Some settings...

ibwrite(counter, “INP:LEV:AUTO OFF;:INP:LEV 0;COUP DC”);

ibwrite(counter, “TRIG:COUNT 1000;:ARM:COUNT 1");

ibwrite(counter, ”DISP:ENAB ON"); ibwrite(counter,

“FORMAT ASCII;:FORMAT:TINF OFF”);

ibwrite(counter, “*ESE 1;*SRE 32");

// On the safe side: Check that setup was OK, all commands

correctly spelled etc

ibwrite(counter, ”syst:err?");

ibrd(counter, buf, 100L); buf[ibcnt]=0; printf(“Setup

error: %s\n”, buf);

// Measure 1000 samples

Start = clock();

ibwrite(counter, “INIT;*OPC”);

// Wait for completion

ibwait(counter, RQS);

/* Read status and event registers to clear them */

ibrsp(counter, &Status);

ibwrite(counter, “*ESR?”);

ibrd(counter, buf, 100L);

ibwrite(counter, “FETC:ARR? 1000");

ibrd(counter, bigbuf, 30000L);

if (ibcnt >0) {

pbuf = bigbuf;

for (i=0; i<1000; i++) {

for (j=0; pbuf[j]!=’,’ && pbuf[j]!=’\0’; j++);

pbuf[j]=’\0’;

if (i%50 == 0) printf(”Result %d: %s\n", i,

pbuf);

pbuf+=j+1;

}

Stop = clock();

Programming Examples

4-6 Block Measurements (Ex. #2)

Pendulum CNT-90 Series Programmer's Handbook

Other manuals for Pendulum CNT-90 Series