Lab Brick LDA is the latest series in Vaunix Technogies’ family of USB-powered, programmable digital attenuators for RF ATE, RF test, research and education applications. The device targets high density attenuation, fading simulation, wireless, MIMO, DVB, WiMAX and other multi-channel digital attenuator applications.
Capable of bidirectional fixed attenuation, swept attenuation ramps, and fading profiles, the 4-channel attenuator provides up to 120 dB of control range with a 0.1 dB step size from 200 MHz to 6 GHz. Each RF port has a 50 Ω impedance with 1.3:1 typical VSWR. Switching speeds are 15 µsec typical. Maximum input level is beyond 28 dBm with an input IP3 over 55 dBm.
The compact unit, designed to operate reliably from -10°C to 50°C, fits into a single standard rack, with well-spaced 50 Ω SMA female connectors for each RF port. A fully programmable GUI application can operate multiple attenuator devices directly from a PC or self-powered USB hub. LabVIEW drivers, Windows API DLL files, Linux driver and instruction manuals are supplied with the Lab Brick LDA series.