Data I/O UniSite-xpi, User Manual

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3. Getting Started
UniSite-xpi User Manual 3-53
If the sample data file is in your current directory, enter the following
Download Host Command
cat sample.dat
↵
Remember to substitute the appropriate filename if you are using a
different file. When you enter the Download Host command, the message
bar displays
Parameter Entered
Download the File Press E
NTER
to begin the download. The action symbol rotates while the
data is being downloaded. When the download is finished the message
bar displays
Data transfer complete. Data sum = xxxxxxxx (8-bit)
After the Download
By this point, you should have successfully downloaded a data file into
UniSite-xpi.
About the Sumcheck When the download was completed, the message bar displayed
Data transfer complete. Data sum = xxxxxxxx (8-bit)
This message tells you two things: first, it tells you that the data transfer
completed successfully, and second, it tells you what the sumcheck of the
transferred data is. The sumcheck is 8-bit and is shown above as
xxxxxxxx.
The sumcheck for memory devices is an eight-digit hexadecimal
summation of the downloaded data. If you change one byte of
information in the data file, the sumcheck will also change. The sumcheck
is a good method of verifying that the data you downloaded matches the
data on your host.
Later, when you program this data into a device, UniSite-xpi will generate
another sumcheck. If the two are the same, then the data programmed is
the same as the downloaded data. If the two sumchecks are different,
then the data programmed is not the same as the downloaded data.
Review
In this Session, you learned how to download data to UniSite-xpi from a
host connected to the Remote port on UniSite-xpi. The steps were
• Select the translation format that matched the format of your data
file.
• From the Main Menu, press M, T, D to go to the download screen.
• Set the parameters on the Download screen to match your setup.
• Enter the host Download Host Command. For example, to transfer
the file filename.dat you would enter cat filename.dat for a
UNIX-based host. If you are using a VMS-based host, you would
enter type filename.dat.