The vacuum operated Test Fixtures for the GR 2272 and GR 228x Test Systems are mounted on the base housing and enhanced with an INGUN vacuum cassette. The cassette is hinged for easy access to the receptacles and wiring during vacuum actuation and PC board contacting.

The size and number of loaded slots of the applicable GenRad Interface Panel is dependant on the number of system resources,i.e. GR 228x-15/7 = 15 slot version, 7 slots assembled. The Interface Panel is mounted on the base plate of the housing.

The Probe Plate is made of standard 10 mm hard-paper laminate (CEM-1) material. The Top Plate is made of 8 mm epoxy hard-paper laminate and coated both sides with an anti-static coating. The vacuum sealing within the cassette is achieved using the renowned INGUN wear-free V-profile seal.

When testing PC boards with open vias, we recommend the use of either a Vacuum-free Zone sealing method (with a pressure-frame unit and push rods) or the use of a vacuumsealed cover (with push-rods). Furthermore, Pressure-Frame Units for Opens-Express Assembly are available for all standard fixture sizes.

The vacuum operated Test Fixtures for the GR 2270/71 Test Systems are mounted on the base housing and enhanced with an INGUN vacuum cassette. The cassette is hinged for easy access to the receptacles and wiring during vacuum actuation and PC board contacting.

The applicable GenRad Interface is mounted on the rear side of the base housing. The position height of the Interface can be varied. The approach plate is designed to accommodate guide pins with a diameter of 10.3 mm. (Optionally 9.6 mm, on request).

The Probe Plate is made of standard 10 mm hard-paper laminate (CEM-1) material. The Top Plate is made of 8 mm epoxy hard-paper laminate and coated both sides with an anti-static coating. The vacuum sealing within the cassette is achieved using the renowned INGUN wear-free V-profile seal.

When testing PC boards with open vias, we recommend the use of either a Vacuum-free Zone sealing method (with a pressure-frame unit and push rods) or the use of a vacuumsealed cover (with push-rods). Furthermore, Pressure- Frame Units for Opens-Express Assembly are available for all standard fixture sizes.