Chapter 1 Introduction
© National Instruments Corporation 1-5 SCXI-1121 User Manual
Refer to the Signal Connections section in Chapter 2, Configuration and
Installation, and to Appendix E, SCXI-1121 Cabling, for additional
information on cabling, connectors, and adapters.
Custom Cables
The SCXI-1121 rear signal connector is a 50-pin male ribbon-cable header.
The manufacturer part number used by National Instruments for this header
is as follows:
• AMP Inc. (part number 1-103310-0)
The mating connector for the SCXI-1121 rear signal connector is a
50-position polarized ribbon-socket connector with strain relief. National
Instruments uses a polarized or keyed connector to prevent inadvertent
upside-down connection to the SCXI-1121. 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)
Standard 50-conductor, 28 AWG, stranded ribbon cables that can be used
with these connectors are as follows:
• Electronic Products Division/3M (part number 3365/50)
• T&B/Ansley Corporation (part number 171-50)
The SCXI-1121 front connector is a 32-pin DIN C male connector with
column A and column C even pins only. The manufacturer part number
used by National Instruments for this connector is as follows:
• Panduit Corporation (part number 100-932-023)
The mating connector for the SCXI-1121 front connector is a 32-pin DINC
female connector. National Instruments uses a polarized connector to
prevent inadvertent upside-down connection to the SCXI-1121.
Recommended manufacturer part numbers for this mating connector are as
follows:
• Panduit Corporation (part number 100-932-434 straight-solder
eyeletpins)
• Panduit Corporation (part number 100-932-633; right-angle pins)
National Instruments selected these connectors to meet UL 1950 and
UL 1244 for 1,500 Vrms isolation.