Hardware & Software Installation Instructions
MC-12 Software Version 3.0
11
STEP C: UPGRADING THE MC-12
Preserving User Settings
The upgrade process will preserve user settings, except in the
circumstances listed below. Before upgrading the MC-12, it is
recommended to create an archive of current user settings. To do
this, use the Configuration Tool available at www.lexicon.com/
mc12/downloads.asp to download current user settings to a
computer. Otherwise, record current user settings on the
installation worksheet that begins on page 14. This will expedite the
process of reconfiguring the MC-12 in the rare event that user
settings are not preserved.
Note:
The MC-12 is designed to preserve the MC-12
upgrade process during serial communication failures.
However, certain factors such as serial cable type,
serial cable length, and environmental conditions
sometimes cause communication to fail. If this occurs,
attempt the MC-12 upgrade again. If problems
persist, contact Lexicon Customer Service at 781-
280-0300 or www.lexicon.com.
User settings will NOT be preserved if:
• The message “WAITING FOR DOWNLOAD” appears on the
on-screen display before the MC-12 upgrade process begins.
• The computer hard drive does not contain the 46kB of free
space required to preserve user settings. Additional space is
also required. Refer to the Personal Computer (PC) specifications
on page 4 for more information.
• A communication error occurs when user settings are
downloaded to the upgraded MC-12. Communication errors
might occur if the serial extension cable is disconnected, the
MC-12 is powered off, or the computer experiences a problem.
Refer to the Note: in the previous column for more information
about serial communication failures.
Note:
• Upgrading the MC-12 is a simple, intuitive
process. Step C instructions are included for
reference.
• It will take about 45 minutes to upgrade the
MC-12. Avoid working with the MC-12 while the
upgrade is in progress.
To upgrade the MC-12:
C-1. Exit all Windows® operating system programs before
installing the new software.
C-2. Make sure the MC-12 and all associated components are
powered off.
C-3. Connect the male end of the serial extension cable to the
RS-232 connector labeled 1 on the MC-12 rear panel. Then,
connect the female end of the serial extension cable to the
appropriate connector on the computer. If this is a USB
connector, a USB-to-Serial port adapter is required.
. . . Step C: Upgrading the MC-12 continues on page 12
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