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www.us-tech.com
September, 2017
Extraction Tool for RF Probes with Snap-In
Cable Connectors By Matthias Zapatka, CTO, INGUN USA M
any of INGUN’s RF probes are designed to move in the z-axis during compres-
sion. This creates proper contact- ing pressure for the outer and cen- ter conductors of the probe. Some of these probe types have snap-in connectors for the cable connec- tion. Most commonly used are SMPM and MCX interfaces. If the coaxial cable needs to
be disconnected, the probe must be held firmly at the tail-end while disconnecting the cable connector by hand. However, for many high- density applications with limited space inside the functional test fixture, it is not possible to hold the tail-end of the probe. In the worst-case scenario,
The Right Tool for the Job To overcome this, engineers
at INGUN have developed a sim- ple, yet highly-effective extrac- tion tool to disengage the connec- tor. It is available in two ver- sions: as a straight extractor — ZW-SMPM(W) for SMPM connec- tions (HFS-852 and 837 probe se- ries) — or as a right-angle extrac- tor — ZW-MCX(W) for MCX con- nections (HFS-410/440 and HFS- 810/ 840/860 probes). For very tight spaces, the
this can result in a decreased life- time of the probe or in alignment issues. This could occur with press-fit probes that
The new extraction tool can disconnect probe and cable connections inside tight fixtures, without causing damage to the probes over time.
From top left: extraction sequence using a new tool for disconnecting probes from snap-in cable connections.
are placed into a receptacle, which holds the probe by friction. The reason is that if the probe’s body snaps back, due to the spring that retracts it, it can cause the probe to slightly rotate in its socket. This is obviously an unwanted situation for applications that require precise, non-rotating alignment, such as GSG (ground-signal-ground) patterns for copla- nar waveguide contacting. A snap effect can cause the probe to walk slightly out of the socket, caus- ing wear and tear.
right-angle extractor may be the best choice. Once the tool is placed around the front collar of the cable connector and is in be- tween it and the probe itself, the tool can be tilted. Only a slight pressure is needed with a tilting
motion in order for the cable to disengage from the probe. With this method, the snap effect can be avoided and the pointing accuracy and lifecycle of
the probe are better retained. Contact: INGUN USA, Inc., 252 Latitude Lane, Suite 105-106, Lake Wylie, SC 29710 % 803-831-1200 fax: 803-656-5080 E-mail:
mailbox@ingun.us Web:
www.ingun.us r
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