Chapter 2 Installation and Configuration
© National Instruments 2-25 NI PXI-8109 User Manual
The NI PXI Platform Services software uses the system module driver,
chassis driver, and
chassis.ini files to generate the PXI system
description file (
pxisys.ini). Device drivers and other utility software
read the
pxisys.ini file to obtain system information. For detailed
information about initialization files, refer to the PXI specification at
www.pxisa.org.
Upgrading RAM
You can change the amount of installed RAM on the NI PXI-8109 by
upgrading the SO-DIMMs.
To upgrade the RAM, remove the NI PXI-8109 from the PXI chassis. To
optimize both memory capacity and system performance, use the same size
and speed memory module in each of the two module slots. The use of
different size modules in each slot is supported, but system performance
will be slower than using two matched modules. However, two mismatched
modules could result in better performance than using a single module.
National Instruments offers the following SO-DIMM for use with the
NI PXI-8109 controller.
• PC3-8500 (DDR3 1066) 2 GB, 256 MB × 64, CL 7, 1.18 in. max
(NI part number 781508-2048)
• PC3-8500 (DDR3 1066) 4 GB, 512 MB × 64, CL 7, 1.18 in. max
(NI part number 781509-4096)
Notes National Instruments has tested and verified that the DDR3 SO-DIMMs we sell
work with the NI PXI-8109. We recommend you purchase your DDR3 SO-DIMM
modules from National Instruments. Other off-the-shelf DDR3 SO-DIMM modules
are not guaranteed to work properly.
When installing memory modules into the memory sockets, the lower socket must be
populated first, followed by the upper socket. If a single memory module is used, it must
be installed in the lower socket.
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