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Chapter 2
Programming Examples
Using This Chapter
This chapter provides examples and descriptions of the most common
operations using the HP E1418A. Use this chapter to gain an overview of how
to program the module, and to obtain programming hints. The examples
shown in this chapter are in ANSI C and use SCPI commands to control the
module. The SCPI commands are described in detail in Chapter 3 of this
manual. SCPI usage conventions and syntax rules are described beginning on
page 60.
This chapter is divided into the following sections:
• Querying Module Identification and Configuration. . . . . . . . . Page 40
• APPLy Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 45
• Error Checking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 47
• SOURce Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 50
• Setting the Output Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 52
• Controlling the Output Relay. . . . . . . . . . . . . . . . . . . . . . . . . Page 53
• Triggering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 54
• Using *OPC? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 56
• Combining Output Channels . . . . . . . . . . . . . . . . . . . . . . . . . Page 57
Program Examples Example programs in ANSI C format are included on the driver CD
supplied with the HP E1418A. Most examples in this chapter are included.
The examples are ASCII files with the *.c extension.
Note The int data type is system dependent. These examples were developed on
a system where int is a 16-bit integer. Other systems may define int to be a
different width.
In the examples, the HP VISA Transition Library is used for I/O operations
with the VXIbus. An HP command module (HP E1405/E1406) is used and
controlled via HP-IB.
To use the HP VISA Transition Library (abbreviated as VTL), include the
visa.h header file.
#include visa.h
Chapter 2 Programming Examples 39