特征:高输入阻抗,低输入电容,直流至350 MHz,可以安装在具有任何探测系统的任何微型定位器上
高阻抗探头Model 18C和Model 19C将最先进的MOS和双极技术与特殊的低电容封装技术相结合,可实现真正卓越的电子测量功能。在制造过程中,每台仪器都经过单独优化,以实现最佳性能。极低的输入电容,高输入阻抗和几乎可忽略的输入泄漏电流甚至可以对最敏感的MOS动态节点进行直接探测。同时,该仪器的全部dc功能与高速功能相结合,可以对电路进行全面的特性描述。10微米的钨探针线逐渐变细到极细的点,以便探测最细的线。细探针导线在与电路接触时会弯曲,以使对电路和探针点的损坏最小化。而且,即使在存在探针台振动的情况下,弯曲也会使探针与电路保持接触。还提供18C型和19C型探针,其20和50微米的钨探针线分别削尖到小于1和3微米。位于Model 18C和Model19C机身上的电路非常坚固。但是,每个探头尖端中未加保护的MOS输入都会受到静电放电的破坏。如果探头尖端损坏,则可以轻松将其卸下并更换。
Specifications
Model 18C
Model 19C
Input Capacitance*
0.02pF
0.02pF
Input Leakage
10 femtoamps
10 femtoamps
Rise/Fall Time
1.2ns
1.2ns
Frequency Response
dc to 350 MHz
dc to 350 MHz
Operating Range
0 to + 10V range **
-7 to + 3V***
Linearity
0.2% 5V range / 2.0% 10V range
0.2% ± 3V range / 2.0% -7 to +3V range
Gain Accuracy
±5%
±5%
Signal Attenuation
(High input impedance oscilloscope) 10 to 1
(50 ohm input) 20 to 1(High input impedance oscilloscope) 10 to 1
(50ohm input) 20 to 1*For 3ns or longer rise and fall signals. Speed limitations of the capacitance cancelling circuitry results in approximately 0.06pF input capacitance for 1ns or shorter rise or fall inputs.
** For 0V to +15V please see the higher voltage part number in the table below.
***For -7V to +8V please use the higher voltage part number in the table below.Requires the use of a Picoprobe Power Supply. Please specify 110V or 220V when ordering.
Picoprobe® Model 18C and Model 19C Replacement Tips*
Standard
Part NumberHigher Voltage
Part NumberTungsten Wire
Shaft Diameter
Point Radius18C-1-5
18C-1-5-HV
5 micron
<0.1 micron
18C-1-10
18C-1-10-HV
10 micron
<0.1 micron
18C-1-20
18C-1-20-HV
20 micron
<1.0 micron
18C-1-50
18C-1-50-HV
50 micron
<3.0 micron
18C-2-5
18C-2-5-HV
5 micron
<0.1 micron
18C-2-10
18C-2-10-HV
10 micron
<0.1 micron
18C-2-20
规格参数