NOISE COM, INC.
As the above display will only be visible during execution of each
Program Step, only DELAY steps will appear for a duration sufficient
for viewing.
4-3
REMOTE
CONTROL
OF
THE
PROGRAMMABLE
NOISE
GENERATOR
All of the PNG Functions Programmable via the Front Panel Keypad
(with the exception of LOCAL) may also be controlled through a
remote Computer, Terminal, or Automatic Test Equipment (ATE) using
the GPIB or Asynchronous Interface Option Ports.
A 'language' has been developed for communicating with the PNG,
using simple ASCII character string Commands terminated by a CR
(Carriage Return) and optional LF (Line Feed). Space characters
may be inserted for clarity of reading, or may be deleted to improve
message throughput. When using the GPIB interface, the message may
be terminated by a LF, by the EOI hardware handshake line, or both.
The PNG, when powered on, is ready to accept commands and data from
a controlling device and respond with acceptance handshaking when
required.
Commands may be entered individually (1 command per line), or in
groups(several commands per line), with a maximum of 64 characters
(including CR/LF) per line. Commands not having proper syntax or
excessive length will be ignored. It is the user's responsibility to
insure that only valid and proper values are entered for selected
parameters.
Most Commands begin with a 2-character prefix, the first character
being 'N' or 'X' to indicate whether the Noise or external signal
channel of the PNG-III will be effected ['X' is used, rather than
'S' to avoid confusion with the Step Commands]. The second
character (A,F,S, or T) indicates whether the Command controls
Attenuation, Filters, Step Size or Time Delay (TD is also an
acceptable format for specifying a Time Delay). The following
characters, which may be 'I', 'D' or numbers indicate Increment,
Decrement or value assignment functions.
Document
M016301
Pg 19
Rev. 2 2/26/03
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