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6
SCIP Command Operation
6.1 Introduction to SCPI
SCPI is a command structure that is based on the IEEE-488.2 specification
which Dow-key has adapted to work with Ethernet and USB controls. The
matrix has internal software loaded that uses SCPI command structure. SCPI
is the abbreviation of Standard Commands for Programmable Instruments.
These commands are standard messages for the control of programmable
instruments, which are sent by the Ethernet and/or USB controller. The
principal objective of SCPI is to make the programming of a test system easier
for the user. When the basic concepts and command structure of SCPI are
understood, it will be easy for the user to write or modify a control program for
the matrix.
The Socket Type of the matrix is server while the controlling computer is the
client.
NOTE: Not all commands for SCPI are compatible with Ethernet and USB,
only the ones stated in this document.
6.2 Command Syntax Structure
[ROUTe]:SWITch<id>[:VALue] <number>|MAX
Square brackets
[ ] indicate optional keywords or parameters.
Braces
{ } enclosure parameter choices with a command string
Triangle brackets
< > enclose parameters for which the user must substitute
a value.
Vertical bar
| separates multiple parameter choices.
The command syntax shows most commands as a mixture of upper and lower
case letters. The upper case letters indicate the abbreviated spelling for the
command. For shorter program lines, the abbreviated form is used. For better
program readability, the long form is used. For example, in the above syntax
statement, ROUT and ROUTE are both acceptable forms. Since both upper
and/or lower case letters are acceptable, ROUTE, rout, and Rout are all
acceptable. Other forms, such as RO and ROU are not acceptable and will
generate an error.