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Commonly referred to as In-Circuit Test (ICT), loaded board test can be defined as the task of measuring components that have been installed on a printed circuit board (PCB). A second basic category of loaded board test measures simple open and shorts on the board to verify manufacturability standards. Circuit Check supports all forms of in-circuit test strategies with its Performance Grade and Value Line test fixtures.

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The Performance Grade Pinnacle vacuum box developed with over a half inch of verticle travel allows more accurate placement of circuit board support structures thus keeping the circuit board as planar as possible. The design allows for top side probing and bi-level testing.  The aluminum vacuum box tests circuit boards up to 12" x 24" with off the shelf parts.








ActuationVacuunBoxe tnCircuit Check's Standard vacuum box used in both the Performance Grade and Value Line architectures is molded with static dissipative ABS side walls and can be customized in both size and height allowing for custom sized circuit board testing.  Single and dual sided testing with top sided guided probes is supported.





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 When physical access or power utilization requires cooling, Circuit Check Hold Down Gates are used with lower probe count vacuum actuated fixtures.  A heavy duty gate with a full frontal latch is available for the Performance Grade while a lighter weight cam latch is available for Value Line fixtures.                                           . 


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The Circuit Check Signature Series pneumaticly actuated test fixtures known as PDs for Pneumatic Drive offer smooth controlled actuation for as many as 12,000 ActuationPneumatic tntest points.  Controlled operation probing test pads as small as 0.012" on 25mil centers is supported. The 5th generation PD is a testiment to its versality and reliability, as it has been a proven product for 30 years and can support over a million cycles. Circuit Check PDs can be configured for in-circuit test or as a functional test fixture.  Circuit Check inventories sizes for circuit boards up to 26" x 18", with custom PDs fabricated upon request.





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Manual Drive fixtures by Circuit Check are the choice for low volume low probe count testing, or when component cooling cannot be dissipated in a vacuum fixture.  Circuit Check mechanical fixtures can be configured for in-circuit test or as a functional test fixture.  Tall components on either side of a circuit board, as well as multiple manual side access, is supported with our manual drive fixtures.  In addition, since our manual drive fixtures are based upon our pneumatic drive architecture, top side probing is supported.

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The Circuit Check Linear Drive Gate is a hybrid of our mechnical hold down gate and our manual drive, while packaged in a lower profile.  This smooth actuating design is useful for low probe count circuit boards or for testing where light pressure is required to hold a UUT.

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Circuit Check’s in-line board handler fixturing exceed the high performance requirements associated with high-volume production.  Circuit Check supports in-line fixturing for all the leading ICT handlers including Circuit Check’s AFS5500, Keysight 5i, Teradyne TSh Multi-Site, IPTE and Pematech.  Circuit Check is the go-to partner for in-line functional test fixtures to speed production throughput.

Learn more about Circuit Check In-line ICT Fixtures.  Learn more about Circuit Check In-line Functional Fixtures.

Both ICT and Functinal In-line fixtures from CCI can be configured with our best-in-class probing and sensor placement technologies to ensure maximum value from your test station.




• Dual Sided probing
• LED sensing
• Marker probes
• Stripper plates
• Switch probes