Modular shielded electronics enclosure

An electronics assembly for removably connecting an electronic assembly to at least one external device while reducing EMI emissions, the electronics enclosure comprising:

• a first electronic component comprising an output and an electrical interface connector configured to removably mate with a docking connector coupled to the at least one external device;
• a second electronic component comprising an input having an input impedance;
• a circuit matching element coupled between the output of the first electronic component and the input of the second electronic component, the circuit matching element configured to provide an output impedance that matches the input impedance of the second electronic component;
• a conductive sled configured to accept the first electronic component and the circuit matching element;
• a conductive cover configured to couple to the sled to form a volume, the first electronic component and the circuit matching element disposed within the volume;
• wherein all non-conductive passages from the volume to the external environment have at least one cross-sectional opening having a continuous conductive perimeter with a maximum linear length within the opening of less than one quarter wavelength of a maximum shielding frequency.

An All-In-One (AIO) assembly for a medical device, the AIO assembly comprising:

• a display unit having an input with an input impedance;
• a conductive sled;
• a motherboard coupled to the sled, the motherboard comprising a processor and a display driver;
• a breakout board having an input coupled to the display driver and an output coupled to the input of the display, the breakout board output configured to provide an output impedance that matches the input impedance of the display;
• a conductive cover coupled to the sled, the conductive cover configured to form a volume when coupled to the, the motherboard and the breakout board disposed within the volume;
• wherein all non-conductive passages from the volume to the external environment have at least one cross-sectional opening having a continuous conductive perimeter with a maximum linear length within the opening of less than one quarter wavelength of a maximum shielding frequency.

An Automated Dispensing Machine (ADM), comprising:

• a housing;
• at least one compartment coupled to the housing, the compartment configured to allow access to the contents of the compartment only after receipt of a signal;
• a docking connector;
• and
• an AIO assembly removably coupled to the housing, the AIO comprising:
• a display unit having an input with an input impedance;
• a conductive sled;
• a motherboard coupled to the sled, the motherboard comprising a processor, a display driver, and an electrical interface connector configured to removably mate with the docking connector;
• a breakout board having an input coupled to the display driver and an output coupled to the input of the display, the breakout board output configured to provide an output impedance that matches the input impedance of the display;
• a conductive cover coupled to the sled, the conductive cover configured to form a volume when coupled to the sled, the motherboard and the breakout board disposed within the volume;
• wherein all non-conductive passages from the volume to the external environment have at least one cross-sectional opening having a continuous conductive perimeter with a maximum linear length within the opening of less than one quarter wavelength of a maximum shielding frequency;
• and
• wherein the AIO assembly is configured to be removable from the ADM without disassembly of the external shell.