20
|
ni.com
|
PCI/PXI/PCIe-6509 User Guide and Specifications
The signal indicating an expired watchdog asserts continuously until the application disarms the
watchdog timer. After the watchdog timer expires, the NI 6509 ignores any writes until the
application disarms the watchdog timer.
Note
On the PCIe-6509, ports that are set to tristate cannot enter safe states of
output when the computer enters a fault condition.
You can set the watchdog timer timeout period to specify the amount of time that elapses before
the watchdog timer expires. The counter on the watchdog timer is configurable up to (2
32
– 1)
100 ns (about seven minutes) on the PCI/PXI-6509 and (2
32
– 1)
32 ns (about two minutes) on
the PCIe-6509 before the watchdog timer expires.
Accessories
Caution
This NI product must be operated with shielded cables and accessories to
ensure compliance with the Electromagnetic Compatibility (EMC) requirements
defined in the
Specifications
section of this document. Do not use unshielded cables
or accessories unless they are installed in a shielded enclosure with properly designed
and shielded input/output ports and connected to the NI product using a shielded
cable. If unshielded cables or accessories are not properly installed and shielded, the
EMC specifications for the product are no longer guaranteed.
NI offers the following products for use with the NI 6509.
For more information about optional equipment available from NI, visit
ni.com
.
Cable (Part Number)
Accessory (Part Number)
SH100-100-F shielded cable
(185095-
xx
)
SCB-100 connector block (776990-01)
R1005050 ribbon cable (182762-
xx
)
CB-50 connector block, DIN-rail mount
(776164-90)
CB-50LP connector block, panel mount
(777101-01)
