Product Overview The Keysight (Agilent) N7752A is a dual 1x2 optical switch module that plugs into the 8163B, 8164B and 8166A lightwave measurement system mainframes. Each module houses two independent 1x2 switches, giving four switched output paths in a single half-rack slot, which makes it a compact building block for automated fibre test stations, multi-device characterisation and DWDM component measurement. With low insertion loss, excellent repeatability and fast