Section 5: Introduction to TSP operation
Model 2657A High Power System SourceMeter® Instrument Reference Manual
5-6
2657A-901-01 Rev. B/December 2012
Error queue
When errors and events occur, the error and status messages are placed in the error queue. Use the
error queue commands to request error and status message information.
(on page 7-82)
Event log
You can use the event log to view specific details about LAN triggering events.
(on page 7-84)
(on page 7-85)
(on page 7-86)
(on page 7-87)
File I/O
You can use the file I/O commands to open and close directories and files, write data, or to read a file
on an installed USB flash drive. File I/O commands are organized into two groups:
•
Commands that reside in the
fs
and
io
table, for example:
io.open()
,
io.close()
,
io.input()
, and
io.output()
. Use these commands to manage file system directories; open
and close file descriptors; and perform basic I/O operations on a pair of default files (one input
and one output).
•
Commands that reside in the file descriptors (for example:
fileVar
:seek()
,
fileVar
:write()
, and
fileVar
:read()
) operate exclusively on the file with which they are
associated.
The root folder of the USB flash drive has the absolute path:
"/usb1/"
You can use either the slash (
/
) or backslash (
\
) as a directory separator. However, the backslash is
also used as an escape character, so if you use it as a directory separator, you will generally need to
use a double backslash (
\\
) when you are creating scripts or sending commands to the instrument.
For basic information about navigation and directory listing of files on a flash drive, see
(on page 2-71).
File descriptor commands for file I/O use a colon (:) to separate the command parts rather than a
period (.), like the
io
commands.
NOTE
Summary of Contents for 2657A
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