a、 供电电压必须小于12V且大于4.4V，否则探头可能损坏或无法正常操作。

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-9110 Specifications
Bandwidth DCto 100MHz (-3dB)
Attenuation ratio 1:100/1000
Accuracy ±2%
Rise Time 3.5ns 
Input Impedance 4MΩ//7pF each side to ground
Input Voltage 
- Category CAT III
- Differential Range ±140V(DC + AC Peak) and 140Vrms @1/100
±1400V(DC + AC Peak) and 1000Vrms @1/1000 
- Common Mode Range ±1400V(DC + AC Peak) and 1000Vrms @1/100 & 1/1000 
- Absolute Max. Voltage 
(Differential or Common Mode) 
±1400V(DC + AC Peak) and 1000Vrms @1/100 & 1/1000
Output Voltage
- Swing ±1.4 V (into 50kΩ load)
- Offset (typical) <±5mV
- Noise (typical) 0.9mVrms
- Source Impedance (typical) 50Ω (for using 1MΩ input system oscilloscope)
CMRR (typical) -80dB @ 60Hz; -50dB @ 1MHz
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
- Option
 
Power leads, Mains adaptor*
(6VDC/200mA
regulated 9VDC/120mA), USB power cord
Length of Input Leads 30cm
Length of BNC Lead 92.5cm 
Weight 500gms
Dimension (LxWxH) 207mm x 83mm x 38mm