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Introduction Chapter 1
PC-OPDIO-16 User Manual 1-4 © National Instruments Corporation
Cabling
National Instruments offers two cable termination accessory kits, the CB-50 and CB-50 LP, for
use with the PC-OPDIO-16. These kits include a terminated, 50-conductor, flat ribbon cable and
a connector block. You can attach signal input and output wires to screw terminals on the
connector blocks and connect to your PC-OPDIO-16 board I/O connector.
You can use the CB-50 or the CB-50 LP for initial prototyping of an application or in situations
where you frequently change your PC-OPDIO-16 board interconnections. When you develop a
final field wiring scheme, however, you may want to develop your own cable. This section
contains information and guidelines for designing custom cables.
The PC-OPDIO-16 I/O connector is a 50-pin male ribbon cable header. The manufacturer part
numbers of the headers National Instruments uses are as follows:
• Electronic Products Division/3M (part number 3596-5002)
• T&B/Ansley Corporation (part number 609-500)
The mating connector for the PC-OPDIO-16 is a 50-position, polarized, ribbon socket connector
with strain relief. National Instruments uses a polarized (keyed) connector to prevent inadvertent
upside-down connection to the PC-OPDIO-16. Recommended manufacturer part numbers for
this mating connector are as follows:
• Electronic Products Division/3M (part number 3425-7650)
• T&B/Ansley Corporation (part number 609-5041CE)
The following are the standard ribbon cables (50-conductor, 28 AWG, stranded) that can be used
with these connectors:
• Electronic Products Division/3M (part number 3365/50)
• T&B/Ansley Corporation (part number 171-50)
Unpacking
Your PC-OPDIO-16 board is shipped in an antistatic envelope to prevent electrostatic damage.
Several components on the board can be damaged by electrostatic discharge. To avoid damage
in handling the board, take the following precautions:
• Ground yourself via a grounding strap or by holding a grounded object.
• Touch the package to a metal part of your computer chassis before removing the board from
the package.
• Never attempt to touch the pins of the connectors.
• Remove the board from the package and inspect the board for loose components or any other
sign of damage. Notify National Instruments if the board appears damaged in any way. Do
not install a damaged board into your computer.
•Store your PC-OPDIO-16 board in the antistatic envelope when not in use.