Keysight E5071C ENA Service Manual page 18

General Information
Precautions
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Keysight Technologies will not be held liable for any failure or damage arising
from negligence regarding these prohibitions and warnings.
If the pre-installed software is damaged somehow, resulting in errant
behavior by the machine, perform a system recovery. For further details of
system recovery, refer to
18
Do not attempt to update VBA (Visual Basic for Applications) software
installed in this machine to its equivalent developed for ordinary PCs. Doing
so will cause malfunction.
Users may install commercial application software for Windows on the
E5071C at their own responsibility. Some application software may affect
the measurement performance, especially measurement speed.
Do not modify or reconfigure the operating system. The Microsoft Windows
operating system has been configured by Keysight to improve the
performance of the E5071C.
Appendix B.
Keysight E5071C ENA Network Analyzers