BNC 835-3 User Manual - Manual (Page 37)

client. Once the computer is configured for a LAN client, you can use the VXI- 11 protocol
and the VISA library to send SCPI commands to the signal generator over the LAN
interface. Example programs are available on request.
VISA is an IO library used to develop IO applications and instrument drivers that comply
with industry standards. It is recommended that the VISA library be used for
programming the signal generator. The NI-VISA and Agilent VISA libraries are similar
implementations of VISA and have the same commands, syntax, and functions.
Using SCPI for 835-3
The Standard Commands for Programmable Instrumentation (SCPI) provides a uniform
and consistent language to control programmable test and measurement devices in
instrumentation systems. The SCPI Standard is built on the foundation of IEEE-488.2,
Standard Codes and Formats. It requires conformance to IEEE-488.2, but is pure
software standard. SCPI syntax is ASCII text, and therefore can be attached to any
computer test language, such as BASIC, C, or C++. It can also be used with Test
Application Environments such as LabWindows/CVI, LabVIEW™, or Matlab®. SCPI is
hardware independent. SCPI strings can be sent over any instrument interface. It works
equally well over GPIB, RS-232, VXIbus or LAN networks.
Please see the 835-3 Programmer’s Manual V 1.2 for detailed description of
supported SCPI commands.
Using Telnet LAN
Telnet provides a means of communicating with the signal generator over the LAN. The
Telnet client, run on a LAN connected computer, will create a login session on the signal
generator. A connection, established between computer and signal generator, generates
a user interface display screen with “>” prompts on the command line.
Using the Telnet protocol to send commands to the signal generator is similar to
communicating with the signal generator over LAN. You establish a connection with the
signal generator and then send or receive information using predefined commands. SCPI
commands are supported from firmware version 2.0. Communication is interactive: one
command at a time. The telnet service is available on port 18.
Please see the 835-3 Programmer’s Manual for further details.
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