Chapter 4
Installation and Connections
© National Instruments Corporation
4-7
BNC-208X Series User Manual
A 50-pin ribbon cable connects your BNC-208X Series board to either an SC-205X Series board, an
SC-207X Series board, or directly to the data acquisition board. Remember to turn the host computer
off before making any connections. One end of the ribbon cable connects to the BNC-208X Series
board at connector J1 or J2. The other end of the ribbon cable connects either to the data acquisition
board or to one of the two 50-pin headers on the SC-205X Series board or the SC-207X Series board
you installed for use with the data acquisition board. Connecting the data acquisition board to J2 and
using J1 (running cable under board) to daisy chain to any other board in the rack is the easiest method
for connecting two or more boards to the MIO-16.
Signal Connections
Ribbon-Cable Connectors
The pinout for the 50-pin ribbon-cable connector on the BNC-2080 board is exactly the same as the
50-pin connector on the MIO-16 and LPM-16 data acquisition boards. The pinout for the 50-pin ribbon-
cable connector on the BNC-2081 board is exactly the same as the 50-pin connector on the Lab data
acquisition board. For more information on these connectors, refer to your data acquisition board user
manual.
Rack-Mount Chassis Cover Attachment
The optional 19-in. rack-mount accessory includes a flat, acrylic plastic cover that can be installed using
the four screws included in the kit. Covering the top and bottom is required for safety reasons if an
SC-206X Series board in the same enclosure is to be used in high-voltage situations. Remember that
voltages above the 42-V peak cannot be applied to the SC-207X Series inputs.
Warning:
The SC-206X Series boards
must be completely enclosed
if any onboard voltages or any
voltages connected to the relays can exceed 42 V.
