Quantic PMI Model TD-30T-SHS-218-30DBAMP Options DAC, DS is an Ultra-High Speed, High Sensitivity Threshold Detector designed for broadband applications in the 2 to 18 GHz frequency range and with an 8-bit digital control to adjust the threshold level and has TTL output. Housing size is 2.5" x 2.0" x 0.5" with SMA female connectors.