Agilent Technologies E1564A, E1563A user manual Example Initial Operation

Initial Operation

To program the E1563A or E1564A Digitizer using Standard Commands for Programmable Instruments (SCPI), you must select the interface address and SCPI commands to be used. Information about using SCPI commands is presented in Chapter 3.

Programming a digitizer using SCPI requires that you select the controller language (C, C++, BASIC, Visual Basic, etc.), interface address and SCPI commands to be used.

NOTE This discussion applies only to Standard Commands for Programmable Instruments (SCPI) programming. The example program listed is written using Virtual Instrument Software Architecture (VISA) function calls.

VISA allows you to execute on VXIplug&play system frameworks that have the VISA I/O layer installed (visa.h “include” file).

NOTE The E1563A or E1564A Digitizer may have experienced temperature extremes during shipment that can affect its calibration. It is recommened you perform a zero offset calibration upon receipt using CAL:ZERO <channel>:ALL? for each channel to meet the accuracy specifications in Appendix A. See Appendix E for the zero adjustment procedure.

Example: Initial Operation

This C program verifies communication between the controller, mainframe and digitizer. It resets the module (*RST), queries the identity of the module (*IDN?) and queries the module for system errors.

#include <stdio.h> #include <visa.h>

/*** FUNCTION PROTOTYPE ***/

void err_handler (ViSession vi, ViStatus x);

void main(void)

{

char buf[512] = {0};

#if defined(_BORLANDC_) && !defined(_WIN32_) _InitEasyWin();

#endif

ViStatus err;

ViSession defaultRM;

ViSession digitizer;

/* Open resource manager and digitizer sessions */ viOpenDefaultRM (&defaultRM);

viOpen(defaultRM, “GPIB-VXI0::9::40”,VI_NULL,VI_NULL, &digitizer);

30 Configuring the Digitizer Modules Chapter 1