7-14 Chapter7
Programming Examples
Measurement Setup Examples
// Channel 1
err_status = hp875x_channelSelect(vi, hp875x_CH1);
checkErr(vi, err_status);
// Turn auxiliary channel on.
err_status = hp875x_auxChannel(vi, hp875x_CH1, hp875x_ON);
checkErr(vi, err_status);
// Channel 2
err_status = hp875x_channelSelect(vi, hp875x_CH2);
checkErr(vi, err_status);
// Turn auxiliary channel on.
err_status = hp875x_auxChannel(vi, hp875x_CH2, hp875x_ON);
checkErr(vi, err_status);
// Channel 2 Insertion Loss measurement, no parameter conversion
// For 8719ET/8720ET/8722ET/8753ET, hp875x_S_PAR21 is interpreted as hp875x_TRANS
err_status = hp875x_measType(vi, hp875x_S_PAR21, hp875x_CONV_OFF);
checkErr(vi, err_status);
// Log magnitude and autoscale
err_status = hp875x_displaySelect(vi,hp875x_CH2,hp875x_DISP_DATA,hp875x_DISP_LOGM);
checkErr(vi, err_status);
err_status = hp875x_autoscale(vi);
checkErr(vi, err_status);
// Channel 3 Reflected Power measurement, no parameter conversion
err_status = hp875x_channelSelect(vi, hp875x_CH3);
checkErr(vi, err_status);
err_status = hp875x_measType(vi, hp875x_IN_MA, hp875x_CONV_OFF);
checkErr(vi, err_status);
// Log magnitude and autoscale
err_status = hp875x_displaySelect(vi,hp875x_CH3,hp875x_DISP_DATA,hp875x_DISP_LOGM);
checkErr(vi, err_status);
err_status = hp875x_autoscale(vi);
checkErr(vi, err_status);
// Channel 4 Transmitted Power measurement, no parameter conversion
err_status = hp875x_channelSelect(vi, hp875x_CH4);
checkErr(vi, err_status);
err_status = hp875x_measType(vi, hp875x_IN_MB, hp875x_CONV_OFF);
checkErr(vi, err_status);
// Log magnitude and autoscale
err_status = hp875x_displaySelect(vi,hp875x_CH4,hp875x_DISP_DATA,hp875x_DISP_LOGM);
checkErr(vi, err_status);
err_status = hp875x_autoscale(vi);
checkErr(vi, err_status);
// Display all 4 measurements, each in a separate graticule, Channel 3 in upper right
err_status = hp875x_dualSplit4Parm(vi, hp875x_DUAL_CHAN_ON, hp875x_DISP_4_GRAT,
hp875x_DISP_2_CHAN3_TOP, hp875x_DISP_4_CHAN3_UPR);
checkErr(vi, err_status);
// Wait for analyzer to finish
err_status = hp875x_opc_Q(vi, “WAIT”, &reply);
checkErr(vi, err_status);
// Close the session
err_status = hp875x_close(vi);
checkErr(vi, err_status);
printf(“Program completed\n”);
return(0);
}
ViStatus initialize(ViRsrc Nwa, ViBoolean id_query, ViBoolean do_reset, ViPSession
vi_ptr)
{
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