Chapter 12 171
Using LAN
Saving/Recalling a File in/from an External Computer
1. Chapter Title
12. Using LAN 3. Chapter Title
4. Chapter Title
5. Chapter Title
Saving/Recalling a File in/from an External Computer
The dynamic data disk of the 4294A holds measurement data together with virtual files to
be used to read the state of equipment settings or to make settings. Accessing from an
external computer to files held in the dynamic data disk of the 4294A by use of ftp allows
you to directly save/recall measurement data, files of equipment settings, or Instrument
BASIC programs in/from an external computer.
That is, transferring files held in the dynamic data disk to an external computer brings
about a result equivalent to carrying out the series of steps given below.
1. Saves measurement data, the state of equipment settings, or Instrument BASIC
programs to files held in flash memory.
2. Transfers files saved in flash memory to an external computer.
3. Erases files held in flash memory.
Transferring files, such as measurement data, the state of equipment settings, etc., held on
an external computer using virtual file names (see
Table 12-1) brings about a result
equivalent to carrying out the series of steps given below.
1. Transfers files held on an external computer to flash memory.
2. Either recalls transferred files or gets them in Instrument BASIC. (Executes the
obtained programs in the case of prog_run.bas.)
3. Erases the files held in flash memory.
NOTE At the time you list the files in a directory by use of the dir command of ftp, or at the time
you access the dynamic data disk, certain files are created temporarily in flash memory.
Thus there can be instances in which you cannot list files or access the dynamic data disk if
sufficient free space (more than the aggregate size of the files transferred) is not available
in flash memory.
NOTE The dynamic data disk is a directory in which virtual files for FTP transfer are stored, so
you cannot access the dynamic data disk by use of the usual file saving/recalling operation
from the front panel or by use of the GPIB command.
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