Abstract: An ergonomic tester for an electronic device under test (EDUT). A tester circuit card is disposed within an enclosed chassis for creating a plurality of predetermined test conditions for the EDUT. A monolithic fixture frame formed from a single piece of material provides unitary lateral supports with pivot points for an ergonomic loading handle assembly, a unitary fan support and a unitary base for supporting a monolithic translatable carriage for engaging and positioning the EDUT during loading and testing. A spring-probe block connector assembly is retained by the unitary lateral supports of the monolithic fixture frame to engage a mating connector in the EDUT when loaded. The spring-probe block connector assembly has one or more mechanical locating elements each for engaging a corresponding mechanical locating element in the EDUT.