US Patent 9766287 Thermal control

An example test system includes: a heating mechanism; a cooling mechanism; an instrument module having one or more interfaces to receive signals from a device under test (DUT), where the instrument module includes one or more electrical components to affect the signals, where the instrument module is between the heating mechanism and the cooling mechanism, and where the heating mechanism and the cooling mechanism are each configured to operate to maintain the instrument module within a target temperature range.