NI 653X Cable Adapter User Guide
6
ni.com
Connecting Signals
The NI 653x
cable adapter provides connectivity to up to 32 of the
single-ended DIO channels of an NI high-speed DIO device. Each DIO,
PFI, and clock channel of the NI high-speed DIO device connects to a
corresponding pin on the NI 653x cable adapter. The 32 DIO channels are
directly connected between the two bulk connectors. PFI <0..5> from the
NI 6535/6535B, NI 6536/6536B, and NI 6537/6537B VHDCI connector
are connected to a 6-position screw terminal. PFI <0..7> from the
NI 6533/6534 68-pin DAQ connector are connected to an 8-position screw
terminal.
PFI channels must be manually connected through screw terminals for
flexibility and to ensure correct signal routing. You can make connections
between the PFI channels using 22- to 26-gauge wire.
The NI 6533/6534 devices have specific applications for PFI channels and
thus require custom wiring to be compatible. An example of how to make
these connections is provided in the
NI 6535/6536/6537 or
NI 6535B/6536B/6537B Custom Wiring Example
section.
