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1257 User Manual
EADS North America Defense
Computer Interfaces 4-1
Test and Services, Inc.
©
2001
Chapter 4
COMPUTER INTERFACES
Introduction
The 1257 Switching System provides the following remote
interfaces for controlling the 1257:
•
TCP/IP (Ethernet).
Transmission Control Protocol/Internet
Protocol (TCP/IP) is a local area network (LAN) standard that
operates over long distances. The 1257 supports 10Base-T (10
M-bit/s) and 100Base-TX (100 M-bit/s) Ethernet networks.
•
IEEE-488.
Also known as the General-Purpose Interface Bus
(GPIB), IEEE-488 is commonly used in test and measurement
applications.
•
RS-232.
Originally developed for modems and data terminals,
the RS-232 interface is now common for controlling a wide
range of products.
The remote interface allows computers to access the operating
features of the 1257 by sending commands manually, or
automatically via a computer program.
Commands
The 1257 remote interfaces comply with the Standard Commands
for Programmable Instruments (SCPI), a universal programming
language for test and measurement instruments.
Chapter 5, SCPI COMMAND BASICS
introduces SCPI and
discusses the commands most frequently used with the 1257. For
a discussion of all commands that may be used via the 1257
remote interfaces, see
Chapter 6, SCPI COMMAND
REFERENCE.