Chapter 4
Common Configuration Questions
4-6
ni.com
The PXI specification allows many combinations of PXI chassis and
system modules. To assist system integrators, the manufacturers of
PXI chassis and system modules must document the capabilities of their
products. The minimum documentation requirements 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 chassis is contained in a
chassis.ini
file provided by the chassis manufacturer. The information
in this file is combined with information about the system controller to
create a single system initialization file called
pxisys.ini
(PXI System
Initialization). The NI PXI-8195/8196 uses MAX to generate the
pxisys.ini
file from the
chassis.ini
file.
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
.
Upgrade Information
How do I upgrade system memory?
You can change the amount of installed RAM on the NI PXI-8195/8196 by
upgrading the DDR2 SO-DIMM.
To upgrade the RAM, remove the NI PXI-8195/8196 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 will result in better performance than using a single module.
National Instruments offers the following types of SO-DIMMs for use with
the NI PXI-8195/8196 controller.
•
256 MB, 32 MB
×
64, CL 4, 1.18 in. max
•
512 MB, 64 MB
×
64, CL 4, 1.18 in. max
•
1 GB, 128 MB
×
64, CL 4, 1.18 in. max
Note
National Instruments has tested and verified that the DDR2 SO-DIMMs we sell
work with the NI PXI-8195/8196. We recommend you purchase your DDR2 SO-DIMM
modules from National Instruments. Other off-the-shelf DDR2 SO-DIMM modules
are not guaranteed to work properly.