Chapter 2
Sending SCPI Commands
This chapter shows how to send Standard Commands for Programmable Instruments (SCPI) and IEEE 488.2
Common Commands to the Agilent E1300/E1301 Mainframe from a computer over the General Purpose
Interface Bus (GPIB)
*
, or from a Terminal. Chapter contents are:
• Using Visual BASIC and Agilent SICL (Agilent Standard Instrument Control Library) . . . . . . 2-2
• Using C/C+ + and Agilent SICL (Agilent Standard Instrument Control Library) . . . . . . . . . . 2-5
• Using C and the GPIB Command Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
• Using BASIC/IBASIC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
• Using a Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Verification and Example Programs
Shipped with the Agilent E1300/E1301 Mainframe are two disks that contain verification and example
programs for the mainframe. One disk (Agilent Part Number: E1300-10307) is in the LIF format and
contains programs written for BASIC/IBASIC. The other disk (Agilent Part Number: E1300-10308) is in the
DOS format and contains programs written in C/C+ + , Visual BASIC, QuickBASIC, and BASIC/IBASIC.
Refer to the “README” files on the disks for information on the various programs on the disks.
Primary and Secondary GPIB Addressing
The plug-in modules in the mainframe are considered individual instruments. This requires them to have a
unique GPIB Secondary address. This is because the Primary GPIB address of each instrument is the same,
which is the primary address of the mainframe itself. To determine the Secondary GPIB address, divide the
Logical Address of an instrument by 8.
For example, a typical GPIB address is:
70903
where:
• “7” is the Select Code
• “09” is the Primary GPIB address of the Agilent E1300/E1301 (default value)
• “03” is the Secondary GPIB address (default value of the Agilent E1326 Multimeter); the “03”
Secondary GPIB address is derived from a Logical Address of 24 (i.e., 24 / 8 = 3)
* GPIB is the implementation of the IEEE Standard 488.1-1978
Sending SCPI Commands 2-1
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