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NI 6509 User Guide and Specifications 24 ni.com
The expiration signal that indicates an expired watchdog continues to assert
until the watchdog is disarmed. After the watchdog timer expires, the
NI USB-6509 ignores any writes until the watchdog timer is disarmed.
Note When the watchdog timer is enabled and the computer enters a fault condition, ports
that are set to tri-state remain tri-stated and do not go to user-defined safe states.
You can set the watchdog timer timeout period to specify the amount of
time that must elapse before the watchdog timer expires. The counter on the
watchdog timer is configurable up to (2
32
– 1) × 20.83 ns (approximately
1.5 minutes) before it expires.
Cables and Accessories
Table 5 lists the products available for use with the NI USB-6509.
For more information about optional equipment available from National
Instruments, visit
ni.com.
Specifications
This section lists the specifications of the NI USB-6509 devices. These
specifications are typical at 25 °C, unless otherwise stated.
Number of channels................................96 input/output
Compatibility..........................................TTL/CMOS, single-ended
GND referenced
Table 5. NI USB-6509 Connectivity Options
Cable Accessory
SH100-100-F shielded cable—part number 185095-01 (1 m)
or 185095-02 (2 m)
SCB-100 connector block—part number 776990-01
R1005050 ribbon cable—part number 182762-0R5 (0.5 m),
182762-01 (1 m), or 182762-02 (2 m)
CB-50 connector block, DIN-rail
mount—part number 776164-90
CB-50LP connector block, panel
mount—part number 777101-01
— CB-100 I/O kit (cable included in kit)
(unshielded)—part number 777812-01
— +12 VDC power supply—part number 780308-0x (where
the x indicates different regions or cable options)