... .1mm2. Operating Frequency: 0.3 ~ 20MHz,sub-broadband, narrowband two tranches3. Pulse repetition frequency: in total 10tranches, frequency adjustable.4. Gain: 0 ... : positive, negative,bi-directional, radio frequency (RF)6. Monitoring Gate: two independentmeasurement gates.7. Echo Evaluation: sound process, horizontaldistance, vertical distance ...