Chapter 3 Configuration and Default Settings
NI VXIpc-882 User Manual 3-8 ni.com
location of the memory windows can cause the NI VXIpc-882 controller to
lock up your system. For example, many PCI-based computers will not
boot if a board in its system requests more memory space than the computer
can allocate. If you encounter this situation, you should reduce the size of
the NI VXIpc-882 controller user memory window. The EEPROM can
become corrupted if the NI VXIpc-882 controller is shut down while it is
updating the EEPROM.
If one of these situations occurs after you change the configuration,
complete the following steps to reconfigure the NI VXIpc-882 controller.
1. Power off your computer.
Caution To protect both yourself and the mainframe from electrical hazards,
the mainframe should remain off until you finish changing the settings on the
NI VXIpc-882 controller.
2. Change jumper W5 to the position shown in Figure 3-3b to restore the
factory configuration.
3. Power on the computer. The computer should boot this time because
the factory-default configuration is being used to initialize the
NI VXIpc-882 controller.
4. Run your software configuration utility to re-adj ust the NI VXIpc-882
controller configuration.
5. After saving the configuration, exit Windows and power off the
computer.
6. Change jumper W5 to the default position, as shown in Figure 3-3a.
7. Power on the computer. If the computer does not boot with this
configuration, you will need to repeat these steps, modifying your
configuration until a final configuration is reached.
VXIbus CLK10 Routing
When the NI VXIpc-882 controller is installed in Slot 0 of your mainframe,
it supplies the VXIbus CLK10 signal. Three different sources for CLK10
are available with the NI VXIpc-882:
• The internal 10 MHz ±50 ppm CLK10 oscillator. This is the default
CLK10 source.
• The front panel CLK10 SMB. When configured as an input the front
panel SMB allows an external source to be used as the source for the
VXIbus CLK10 signal.