Active Silicon FireBird Panduan Memulai Cepat - Halaman 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 set to 'Off' .
z Speedstep set to 'Off' .
Bandwidth Test Results
FireBird Frame Grabbers – Quickstart Guide v2.4
z PCI Performance Mode set to 'On' .
z PCI Express Power Management set
to 'Off' .
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
Tools menu in ActiveCapture, shows the
maximum rate that FireBird can transfer
data to the PC.
For a board with part number including
'3PE8' a value around 6800 Mbytes/sec
is typical of a good PC; similarly 3400
Mytes/sec for a '3PE4' or '2PE8' and 1700
Mbytes/sec for a '2PE4' . 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, check the following:
Check that a suitable PCI Express slot
is in use (see Hardware Installation on
page 3). 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?
Old chipsets may show worse
performance than current ones.
Hardware Manual Example
Documentation
The Start Menu under Active Silicon
FireBird <xx> – Documentation includes
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 System 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.
Documentation on the API is described
in the ActiveSDK section (see page 10).
System Manual Example
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