Active Silicon FireBird Посібник із швидкого старту - Сторінка 6
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Check the PC BIOS:
Older BIOS versions in PCs can
give noticeably lower PCI Express
bandwidth. It is recommended to
check for available BIOS updates,
especially if any bandwidth problems
are seen.
Many PCs now support power saving
features in the BIOS. These can result
in poor PCI Express bandwidth,
maybe only occasionally. Therefore
Active Silicon recommends that the
following settings are used (where
available):
z C-States should be off.
z Speedstep should be off.
Bandwidth test results
FireBird Frame Grabber – Quickstart Guide v1.6
z PCI Performance Mode should be
on.
Check the Bandwidth:
Next run the Bandwidth Test Utility.
FireBird can transfer data at very high
rates but if the PC cannot keep up the
system will not work. This utility, in the
Start Menu under Active Silicon FireBird
xxx - Utilities, shows the maximum rate
that FireBird can transfer data to the
PC. A value around 3400 Mbytes/sec is
typical of a good PC. A low or unstable
value means that problems are likely to
be seen.
Low Bandwidth?
If the bandwidth test reports a low or
unstable value, here is a list of things to
check:
Check that a suitable PCI Express slot
is in use (see Hardware Installation
page). Sometimes motherboard
restrictions mean that a Gen 2 x16 slot
works much better than a Gen 2 x8
slot, so try using a x16 slot.
Check the BIOS settings (see Check the
PC BIOS opposite).
How old is the motherboard?
Chipsets more than three years old
may show worse performance than
current ones.
Hardware Manual example
Documentation:
The Start Menu under Active Silicon
FireBird <xx> has this document, release
notes, and the following key documents:
The FireBird Hardware Manual gives
full details of all connectors, LEDs and
jumpers on FireBird, I/O support, and PC
requirements.
The FireBird Programmer's Manual is
the first place for system developers and
programmers to go. It gives an overview
of the options to configure a system,
describes all the trigger modes in detail,
and discusses system issues.
For documentation on the API, see the
SDK section later in this guide.
Programmer's Manual example
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