Programmable attenuator of RF signals with very high voltage range (50 mV – 1000 V) for protecting digitizers against damage by high voltage signals. Four channels with SMA connectors; Three attenuation values: 0, -20, -40 dB; Bandwidth: DC – 2 GHz. VME form factor with I2C management bus. No VME-bus interface, only power supply used. More info at the Wiki page