a、 供电电压需要小于12V且大于4.4V，否则探头可能损坏或不能正常操作。

b、 极性内部为“+”，外部为“–”。如果极性错误，内置电路可保护探头，不会发生危险或损坏。

c、 当电池电压过低时，面板上的电源指示灯将闪烁。

SI-9002 Specifications
Bandwidth DC to 25MHz (-3dB)
Attenuation Ratio 1:20/200
Accuracy ±2%
Rise Time
Input Impedance 
14ns
4MΩ//5.5pF each side to ground
Input Voltage
-Category CAT III
-Differential Range ±140V(DC+AC Peak) and 140Vrms @1/20 
 ±1400V(DC+AC Peak) and 1000Vrms @1/200 
- Common Mode Range 
 ±1400V(DC+AC Peak) and 1000Vrms @1/20 & 1/200 
- Absolute Max. Voltage ±1400V(DC+AC Peak) and 1000Vrms @1/20 & 1/200
(Differential or Common Mode) 
Output Voltage
- Swing ±7V (into 50kΩ load)
- Offset (typical) <±5mV 
- Noise (typical) 0.7mVrms 
- Source Impedance (typical) 50Ω (for using 1MΩ input system oscilloscope)
CMRR (typical) -86dB @50Hz, -60dB @20kHZ
Ambient Operating Temperature -10 to 40℃
Ambient Storage Temperature -30 to 70℃
Ambient Operating Humidity Up to 85% RH
Ambient Storage Humidity Up to 85% RH
Power Requirements*
 
- Standard 4xAA cells 
- Options Power leads, Mains adaptor* (6VDC/60mA 
Length of BNC Cable 
or regulated 9VDC/40mA), USB power cord
95cm 
Length of Input Leads 45cm
Weight 400gms (probe and PVC jacket) 
Dimensions (LxWxH) 170mm x 63mm x 21mm