SCPI Introduction 
  Copyright © Itech Electronic Co., Ltd.  22 
Using Device Clear 
You can send a device clear at any time to abort a SCPI command that may be 
hanging up the GPIB interface. The status registers, the error queue, and all 
configuration states are left unchanged when a device clear message is 
received. Device clear performs the following actions: 
♦The input and output buffers of the electronic load are cleared. 
♦The electronic load is prepared to accept a new command string. 
The following statement shows how to send a device clear over the GPIB 
interface using GW BASIC: 
CLEAR 705          IEEE-488 Device Clear 
The following statement shows how to send a device clear over the GPIB 
interface using the GPIB command library for C or QuickBASIC: 
IOCLEAR (705) 
2.7 SCPI Conformance Information 
2.7.1 Language Dictionary Introduction 
This section gives the syntax and parameters for all the IEEE 488.2 SCPI 
subsystem and common commands used by the electronic loads. Because the 
SCPI syntax remains the same for all programming languages, the examples 
given for each command are generic. 
Syntax Forms 
Syntax definitions use the long form, but only short form headers (or 
"keywords") appear in the examples. Use the long form to help make 
your program selfdocumenting.
 
Parameters 
Most commands require a parameter and all queries will return a 
parameter. The range for a parameter may vary according to the 
model of electronic load. Parameters for all models are listed in the 
Specifications table in the User’s Guide.
 
Channel 
If a command only applies to individual channels of a mainframe, the 
entry Channel Selectable will appear in the command description.
 
Related 
Commands   
Where appropriate, related commands or queries are included. 
These are listed because they are either directly related by function, 
or because reading about    them will clarify or enhance your 
understanding of the original command or query. 
Order of 
Presentation 
The dictionary is organized as follows: Subsystem commands, 
arranged by subsystem_ IEEE 488.2 common commands