The vacuum operated Test Fixtures for the TD 88xx Spectrum Test System consist of a base housing and an INGUN vacuum cassette. The cassette is hinged for easy access to the receptacles and wiring during vacuum actuation and PC board contacting. The base housing is designed to prevent injury through pinching of the fingers when the fixture is locked onto the Spectrum System Interface. The mounting of the Interface Panel on the fixture base housing is designed so that the panel is ”floating”. This ensures that the fixture does not weigh heavily onto the System Interface.

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 of the VA 2040 fixture version 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 Frame-Scan Assembly are available for all standard fixture sizes.