You may also select a Manual fan mode. In this mode, you may manually set the fan speeds toachieve the desired performance.Note You may not set the fan speeds or power settings lower than the minimumlevel required to maintain required cooling levels.Complete the following steps to change the fan settings in MAX .1. In the Configuration tree, click on the PXI chassis you want to configure.2. In the right-hand pane, click on the Settings tab.3. In the Fans group, select the desired Mode and Cooling Profile using the drop-downmenus.4. Click the Save button. Shortly after clicking the Save button, you should see the fanspeeds change.Using System Configuration and Initialization FilesThe PXI Express specification allows many combinations of PXI Express chassis and systemmodules. To assist system integrators, the manufacturers of PXI Express chassis and systemmodules must document the capabilities of their products. The minimum documentationrequirements are contained in .ini files, which consist of ASCII text. System integrators,configuration utilities, and device drivers can use these .ini files.The capability documentation for the PXIe-1092 chassis is contained in the chassis.inifile on the software media that comes with the chassis. The information in this file is combinedwith information about the system controller to create a single system initialization file calledpxisys.ini (PXI System Initialization). The system controller manufacturer either providesa pxisys.ini file for the particular chassis model that contains the system controller orprovides a utility that can read an arbitrary chassis.ini file and generate the correspondingpxisys.ini file. System controllers from NI provide the pxisys.ini file for thePXIe-1092 chassis, so you should not need to use the chassis.ini file. Refer to thedocumentation provided with the system controller or to ni.com/support for moreinformation on pxisys.ini and chassis.ini files.Device drivers and other utility software read the pxisys.ini file to obtain systeminformation. The device drivers should have no need to directly read the chassis.ini file.For detailed information regarding initialization files, refer to the PXI Express specification atwww.pxisa.org.MaintenanceThis section describes basic maintenance procedures you can perform on the PXIe-1092chassis.Caution Disconnect the power cable prior to servicing your PXIe-1092 chassis.28 | ni.com | PXIe-1092 User Guide