Peripheral
External Connector
Description
USB
USB 4-pin Series A stacked
receptacle (4 ports)
Hi-Speed USB
USB 9-pin Series A stacked
receptacle (2 ports)
SuperSpeed USB, backwards
compatible with USB 2.0
PXI trigger
Trigger (SMB)
Routing PXI triggers to or from
the backplane trigger bus
GPIB device
GPIB (25-pin Micro D)
General-Purpose Interface Bus,
IEEE 488.1
ExpressCard/34
module
ExpressCard/34 slot
ExpressCard/34 Expansion
PXI Trigger Connectivity
The SMB connector on the NI PXI-8840 Quad-Core front panel can connect to or from any
PXI backplane trigger line. A trigger allocation process is needed to prevent two resources
from connecting to the same trigger line, resulting in the trigger being double-driven and
possibly damaging the hardware. At the time of this manual’s publication, this software is not
yet available for Windows. Contact National Instruments for more information.
Front Panel Features
The NI PXI-8840 Quad-Core has the following front-panel features:
•
A controller reset push button (press the button to generate a reset to the controller)
•
Two front panel LEDs that show PC status:
–
DRIVE LED
— Indicates when an access to the internal hard disk is occurring.
–
PWR OK/FAULT LED
—Indicates the controller status. The LED indicates one of
the following states:
•
Green ON steady
—PXI and onboard power is on and within regulation limits.
•
Green BLINKING
—One of the onboard power supplies is operating outside
of the normal limits or the system power supply is out of regulation.
•
OFF
—The controller is powered off.
•
Red BLINKING
—The controller detected a power rail fault when trying to
boot.
•
Red Solid
—The controller detected a thermal fault and has shut down to
protect the system.
–
USER LEDs
—Two bi-color green/yellow LEDs (
USER1
and
USER2
) that you can
define to meet the needs of your LabVIEW application.
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NI PXI-8840 Quad-Core Getting Started Guide
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