Designed media encoder tester (Converted Video/Audio to Ethernet), and tapping unit tester (Converted Ethernet toVideo/Audio). These testers used a PXI computer, control cards, Ethernet switch, and power supplies, to a custom builtinterface board.Designed seat tester (Provides Power, Ethernet (10/100/1000), USB, RS-232 to the aircraft seats). This used an Amproembedded PC, custom interface and power board with ESD protection. It also had standard VGA, and PS2 mouse andkeyboard interfaces.Designed In-Seat Personnel Control (ISPC) tester (Wireless controller for seat actuators and streaming video), USBHUB Tester (USB and power). This used a PC with custom cables and interface control box.Designed Second generation Seat Tester - Provides power, Ethernet (10/100/1000), USB, RS-232 to the aircraft seats.This used a PC, Ethernet switch, and Ethernet controlled power switch, with custom cables.Designed ISPC charging Station - Charged 24 ISPC at a time, with indicators of their status.This used a PC, Powersupply, and USB HUB's.Designed special seat test hardware.Designed ECU simulator - RS485 controller for seat actuators. This was an interface box with RS-485 anddiscrete interface.Designed 2-Wire to 4-Wire Ethernet converter with POE. This was an interface box.Reviewed wiring for every seat. Designed all interface test cables for seat tester and updated the testprocedure - EN4165, ARINC, Cannon Circulars, DSUB with HDMI, VGA, and Composite Video, Ethernet (10/100/1000),Fiber optic, USB, and Power.