The 50PA-847 from JFW Industries is a programmable attenuator assembly that contains 24 attenuators. They operate from 200 MHz to 6 GHz with each one having a attenuation range of 95 dB in 1 dB steps. Each attenuator can be controlled individually (set attenuator command) or as a group (block command, set block command). The assemblies are AC powered (100-240 VAC) by an internal AC/DC power supply. The chassis is rack mountable via front plate mounting holes and come in standard rack unit heights.