What is the difference between the Tekprobe and TekConnect probe interfaces?
The Tekprobe interface was first introduced with Tektronix oscilloscopes in 1998. This interface provided a standard BNC connector at its center and surrounding the BNC concentrically are seven landing pads for pogo pins carrying four supply voltages, clock, data and offset. The BNC outer shell serves and ground for the signal, and these other connections.
The TekConnect probe interface was recently developed to address the bandwidth limitation of the BNC connector and provide improved reliability and ease of use. The maximum useable bandwidth of a high-quality BNC connector is about 4 GHz. Recognizing that market demand for measurement bandwidth above 4 GHz was increasing, the TekConnect probe interface was designed with a BMA connector. The BMA connector is a blind mate connector similar in size and performance to an SMA connector, but with a thread-less outer ground connection. The BMA connector provides a 50 ohm coaxial interconnect that is capable of supporting quality electrical performance up to at least 18 GHz. The probe power and control signals in the TekConnect interface are supported with a spring-contact pin block in the TekConnect "bucket" side of the interface. The gold-plated spring-contact pins mate with gold-plated pads on a small circuit board on the TekConnect "nose" side of the interface.
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