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1.TEV performance parameters
Sensor: capacitance;
Measurement range: - 5-60db, step size 1dB;
Resolution: 1dB.
2.Ultrasonic measurement parameters
Measurement range: - 11db ～ 68dB, step size 1dB;
Resolution: 1dB;
Center frequency of sensor: 40KHz ± 1kHz;
Sensor diameter: 16mm.
3.Instrument hardware index
Indicator: color backlight LCD;
Display resolution: 320x240;
Lateral sensitivity: 50uS / div ~ 2ms / div;
Vertical sensitivity: 4uv / div ~ 400uv / div (ultrasonic);
400uv/Div ~40mv/Div（TEV）；
Trigger mode: Auto, norm, sign;
PC connection interface: USB connection;
Charging mode: special charger;
Data storage: support SD card storage;
Operation time: each set can be used for 4 to 5 hours after full charging;
Controller: membrane keyboard;
Connector: 2.1mm low voltage DC charger input;
3.5mm stereo headphone socket;
External ultrasonic sensor input;
Headset: minimum 8 ohm.
4.Working environment
Operating temperature: - 10 ~ 45 ℃;
Humidity: 0 - 90% RH, no condensation;
5.Dimensions
Size: main engine 245 * 132 * 45 mm; paraboloid diameter: 275 mm;
Weight: 1kg (host) 0.5kg (sensor);
6.Battery charger
Rated voltage: 90 ~ 264v AC;
Frequency: 47-63Hz;
Charging voltage: 12V DC;
Charging current: 500 mA;
Time required for full charging: 5 hours.
7.Parameters of external parabolic ultrasonic sensor
Center frequency of sensor: 40 kHz;
Sensor diameter: 16mm;
External diameter of parabolic reflector: 275mm;
Standard diameter of parabolic reflector: 250mm;
Weight: 0.6 kg;
Operating temperature: - 10 - 50 ℃;
Humidity: 0 - 90% relative humidity, no condensation.
