National Instruments BNC -2140 - Manual (Page 9)

Chapter 1 Introduction
© National Instruments Corporation 1-3 BNC-2140 User Manual
Optional Equipment
If your application requires that you use transducers with microdot
connectors, use the BNC plug to screw-on receptacle adapter, part number
033-0101-0001, from Microdot Connectors. This accessory allows you to
connect BNC and microdot connectors.
If your application requires that you use a prepolarized microphone with a
microphone preamplifier, contact Brüel and Kjær.