Teledyne 4220 - Manual (Page 151)

4220 Flow Meter
Section 6 Maintenance and Service
6-17
mouse and keyboard commands. If you are unfamiliar
with DOS or Windows, please read your DOS or
Windows user manuals.
6.8.2 Before Running FLASH
UPDATE
The windows in FLASH UPDATE contain all the instructions
you need to update the instrument. However, there are a few
things to consider before running the program.
• Updating your instrument erases the data stored
in its memory. This includes all readings and most of
the program settings. FLASH UPDATE replaces most
program settings with factory settings. Before running
the program, collect the data and record your program
settings. Then, after updating the software, reprogram
the instrument.
• If you have Flowlink, Teledyne Isco strongly
recommends using it to update 4200 Series Flow
Meters. Flowlink lets you collect the data stored in the
instrument before updating the software. It also leaves
the program settings in the instrument unchanged,
eliminating the need to reprogram them. Then Flowlink
updates the software, it uses the update files on the
FLASH UPDATE disk and disregards the FLASH
UPDATE program. Refer to the Flowlink Help files for
more information. Use FLASH UPDATE only if you do
not have Flowlink available.
• The instructions in the following section, Running
FLASH UPDATE, assume you are running the program
from the update disk. However, you may prefer to copy
the disk’s contents to your hard disk. Before copying the
disk, create a new directory for the FLASH UPDATE
program and the update files. The program and the
update files must be in the same directory. Furthermore,
that directory must be the current directory when you
run the program.
• If you receive several update disks over time, copy the
update files and the program when copying the contents
of a disk. This ensures that you have a current version of
FLASH UPDATE as well as the new update files.
Depending on your selection in the preferences window,
you may see the window in the margin (left) listing all
files in the directory. This window appears only when
the directory or disk contains more than one version of
the update files and the Preferences option for Show
Update File is “All Update Files.” (See About Prefer-
ences.)