Chapter 1 Introduction
© National Instruments Corporation 1-5 PC-DIO-24 User Manual
• Electronic Products Division/3M (part number 3425-7650)
• T&B/Ansley Corporation (part number 609-5041CE)
The standard ribbon cable (50-conductor, 28 AWG, stranded) that can be used with these
connectors is as follows:
• Electronic Products Division/3M (part number 3365/50)
• T&B/Ansley Corporation (part number 171-50)
Recommended manufacturer part numbers for the 50-pin edge connector for connecting to a
module rack with an edge connector are as follows:
• Electronic Products Division/3M (part number 3415-0001)
• T&B Ansley Corporation (part number 609-5015M)
A polarizing key can be plugged into these edge connectors to prevent inadvertent upside-down
connection to the I/O module rack. The location of this key varies from rack to rack. Consult
the specification for the rack you intend to use for the location of any polarizing key. The
recommended manufacturer part numbers for this polarizing key are as follows:
• Electronic Products Division/3M (part number 3439-2)
• T&B Ansley Corporation (part number 609-0005)
If you plan to use the PC-DIO-24 for a communications application, you may need shielded
cables to meet FCC requirements. The PC-DIO-24 I/O bracket has been designed so that the
shield of the I/O cable can be grounded through the computer chassis when a mating connector
such as the following is used:
• AMP Special Industries (part number 2-746483-2)
Many varieties of shielded ribbon cable are available to work with the mating connector listed
previously. One type of shielded cable encloses a standard ribbon cable with a shielded jacket.
Recommended manufacturers and the appropriate part numbers for this type of cable are as
follows:
• Belden Electronic Wire and Cable (part number 9L28350)
• T&B/Ansley Corporation (part number 187-50)