Dual 1x4 RF Multiplexer Module 1.3GHz, 50Ohm The Agilent (now Keysight) 44478A is a Multiplexer Module designed for broadband switching of high-frequency or fast pulse signals. Dual 1x4 multiplexers provide bi-directional switching of signals from DC to 1.3 GHz. High-channel isolation (>55 dB at 1 GHz) assures quality dynamic-range measurements using spectrum, network, or distortion analyzers. Each 1x4 multiplexer consists of seven relays in a tree" structure, which provides high isolation and low VSWR. All the connectors on the module's edge are female BNC for ease of wiring. Off-channels can be terminated in resistors to maintain proper operation of DUT circuitry. Simply plug a 50 Ohm SMB type resistive termination onto the on-board male SMB connector provided for each channel. Switching: up to 1 A, 24 W or 24 VA Insertion loss: <1.9 dB at 1.3 GHz Scan rate max.: 43 Ch/s Voltage max.: 42 V, DC+AC peak Current max.: 1 A Power max. (per channel): 24 W, 24 VA or 44 dBm, characteristic impedance: 50 ohms "