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148 | NAVISET ADMINISTRATOR 2 USER’S GUIDE
Appendix
148 | NAVISET ADMINISTRATOR 2 USER’S GUIDE
F
Windows Management Instrumentation
About WMI
Windows Management Instrumentation (WMI) provides fully integrated operating system support for system and
applications management on a Windows computer. WMI provides a model of the conguration, status, and operational
aspects of Windows operating systems, assisting management applications in creating solutions that reduce the
maintenance and life cycle costs of managing Windows and hardware devices.
NaViSet Administrator is able to access a remote computer and read this information using WMI.
Without installing any additional software on a remote computer, NaViSet Administrator is able to report about many
different items such as:
• Connected primary display monitor make, model, serial number, and resolution
• Make, model and serial number of the computer (if available)
• CPU type, speed and current usage
• Operating system version and service pack
• System memory size and current usage
NaViSet Administrator is able to enhance the amount of information available on the connected display monitors on a
remote computer by installing a custom WMI Provider.
NaViSet Administrator WMI Providers
Two different WMI Providers are included with NaViSet Administrator; the RS232 WMI Provider (used for large-
screen displays connected to the computer via RS232), and the DDC/CI WMI Provider (used for desktop displays and
communicates using the video cable to the display).
!Note: The RS232 and DDC/CI WMI Providers cannot both be installed at the same time on a computer.
The NaViSet Administrator WMI Providers should be installed on all remote computers that have compatible NEC
display monitors. The WMI Provider receives queries and commands from the NaViSet Administrator application, via
WMI, and communicates these commands to the display via DDC/CI or RS232. The WMI Provider is a supplier or
provider of the monitor metadata to the NaViSet Administrator application. It is a completely background process that
gets loaded temporarily whenever a request or command is received and has no direct interaction with the users on the
remote computers.
In order to perform adjustments and advanced query functions, it is necessary to install one of the NaViSet Administrator
WMI Provider on each remote Windows computer. If the WMI Provider is not installed, then NaViSet Administrator can
still gather basic information about the main display connected to the computer by using standard built-in WMI classes.
This information is limited to static metadata and so no adjustment of the display is possible. This basic information is
available regardless of the model or make of display connected.
The NEC WMI Providers create a standard WMI Object that can be accessed not only from the NaViSet Administrator
application, but also 3rd party asset management applications and also several other WMI interfaces such as VB
Scripts.