The LDA-802-32 from Vaunix is a 32-channel Digital Attenuator that operates from 200 to 8000 MHz. This solid-state attenuator provides 120 dB of attenuation control with a step size of 0.1 dB. It has a switching speed of 2 μs, an insertion loss of less than 11 dB, and a VSWR of 1.5:1. The attenuators are easily programmable for fixed attenuation, swept attenuation ramps, and user-defined fading profiles directly from the included Graphical User Interface (GUI). It requires a DC supply of 5 V (via USB) and consumes 400 mA of current. This digital attenuator brings affordability, functionality, reliability, and simplicity to the microwave test bench.
The LDA-802-32 includes a USB-C interface for power and control and an Ethernet interface for control. The USB port uses a native HID interface to avoid the difficulties inherent in using older serial or IEEE-488 interfaces implemented over USB. It allows users to work faster without having to install kernel-level drivers, and Lab Brick devices can be easily used on any system that supports USB HID devices, including low-cost embedded computers using Linux or similar operating systems. The Ethernet interface is configurable for Static IP or DHCP with the ability to assign the HTTP port for extra security.
The LDA-802-32 is available in a rack-mountable enclosure that measures 431.8 x 330.2 x 88.9 mm with SMA-female connectors. It is suitable for Wi-Fi, Wi-Fi 6E, cellular (3G, 4G, 5G, LTE), DVB, microwave radio fading simulators, engineering/production test labs, and automated test equipment (ATE) applications.
