1. Power input
1. Voltage: 7 - 15V DC
2. Current: 1A or above
2. Ultrasound pulse at 50W load
1. Amplitude: 15 - 100V.
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A 2 MHz pulse with 100 volt peak to peak	A 2 MHz pulse with 200 volt peak to peak
A 5 MHz pulse with 100 volt peak to peak	A 10 MHz pulse with 100 volt peak to peak

2. Burst Length: 1 - 256
3. Maximal Duty Factor: 2Watt/(Amplitude² /Load), at 100V amplitude, Duty_Max is 0.01, or 1%.
4. PRF Max = (Center_frequency) * 2* Load / Amplitude²  /  Burst_length

                                                              i.      For example, at 1MHz, 100V, when burst length is 1, the maximal allowed PRF is 1e6 *2*50/100²  /1 = 10 kHz

                                                            ii.      With above parameters, at 10MHz, the maximal allowed PRF is 100KHz.

                                                          iii.      WARINING: 2Watts may have some unsafe effects on human or animal. If you use it on human or animal experiments, it is your responsibility to check the FDA or other related regulatory standards.

3. Receiver
1. Total gain: 0 - 60 dB
2. Bandwidth: 90 MHz
4. AD converter
1. Clock: 100MHz
2. Width: 8 bit.
3. Input range: 0 - 1.5V.
5. Depth control 
1. Start Depth: AD will start to digitize data when the echo from Start_Depth returns to transducer. The default value is 50mm / Center_frequency (MHz). It is 5mm at 10 MHz.
2. Stop Depth: AD will stop digitized data when the echo from Stop_Depth returns to transducer. The default value is 500mm  / Center_frequency (MHz). It is 50 mm at 10 MHz.
3. Effects on PRF: PRF_Max = 1 / (Stop_depth * 2 /C) . C is sound speed, with a default value of 1540m/s.
6. Serial port control
1. Baud rate: 115200 bps.
2. Stop bit: 1
7. Trigger out: 3.3V, 50ns duration.
8. Trigger in: 3.3v - 5V, no less than 100ns duration.
9. Dimensions: length: 8''; width: 5.4''; height: 2''
10. Environment: 10^o C - 30^o C