I. Overview ECG, EEG and ECG is commonly used in medical health care unit of measurement apparatus of medical diagnosis and emergency care. Their high usage, it is accurate or not, directly affect the doctor's diagnosis and the safety of patients, for which the State Bureau of Technical Supervision has been included in the compulsory verification of measuring instruments. As their numbers increase, they quickly and accurately test cycle is particularly important. We introduced a new generation of smart portable WJ2072 enhanced triple heart EEG Calibrator (hereinafter referred to as Calibrator), the Calibrator finished it not only according to the new national regulations JJG 543-2008 "ECG", JJG 1043-2008 "EEG" and JJG 760-2003 "ECG" on the ECG, EEG and ECG three instruments for rapid verification, but also on the digital ECG and EEG machine test. The Calibrator applies the latest high-tech achievements, high-performance computer chips used by the US as a core part, together with other LSI and software configuration, use the programmable array technology, so that greatly reduced the volume Calibrator, Operation flexible, easy to use. Second, the major technical indicators 1, Ambient temperature: 10 ~ 30 ℃; Relative humidity: ≤80%; Atmospheric pressure: 96 ~ 104kpa; 2, the main technical parameters (1) a square wave signal source voltage range 0.0mVp-. p ~ 30Vp-p; precision:. ± 0.6% b cycle range: 0.01s ~ 10s; Accuracy: ± 1% (2) a polarization voltage source DC ± 300mV; b precision:.. ± 5% (3) low frequency .. a source output waveform: sine, triangle wave b output voltage (continuously adjustable, can fast transfer can be slow tune) Range: 0.0mVp-p ~ 30Vp-p; precision:. ± 1% c output frequency (continuous adjustable, can fast transfer can be slow tune) Range: 0.1 ~ 200Hz; Accuracy: ± 1% (4) sine wave amplitude-frequency characteristic: Within 1 ~ 75Hz frequency range, the output amplitude is not greater than 1% (5) sine wave Waveform distortion: ≤5% (6) add a balanced attenuator attenuation ratio: 1:. 1000; b precision:. ± 0.3% NOTE: precision calibration voltage attenuator precision of the absolute value of the absolute value of + ≤1% , will be able to meet code requirements. (7) Standard heartbeat signal generator a heart rate range: 20 to 300 times / min; Heart rate accuracy: ± 1% b Output voltage: 0.5 mVp-p ~ 3mVp-p; precision:. ± 1% (8) Total mode voltage display a measuring range: 8 ~ 15V; b precision:.. ± 10% 3, Power: AC 220 ± 11V, 50 ± 1Hz 4, power consumption: <40W 5, Weight: 3kg 6, Dimensions: 320 × 300 × 118 three main advantages 1, the output circuitry of imported fully electronic switch, silent, no longer wear life, overcome the similar products using the relay switch sound, life is short and other defects; 2, test project procedures, simple operation ; 3, using the German import shielded chassis, anti-interference ability, instrument-grade; 4, with a spot test with the shock package.