Signatone offers Picoprobe low capacitance / high speed active probe arms and accessories. These probes arms have a FET amplifier either in or near the tip and are designed for measuring internal node voltages without capacitively loading the circuit.
An active probing systems consists of an active probe arm, a Picoprobe power supply (capable of simultaneously driving two active probe arms), a micropositioner and an active probe tip.
Active Probe Arms:
Picoprobe Active Probe Arm Specifications:
Active Probe Tips:
Active Probe Tips are available for each of the above mentioned active probe arms. Tips are available with tip diameters of 3 micron, 1 micron or 0.2 micron diameter.
Active Probe Power Supply
The Picoprobe active probe power supply can simultaneously drive two model SP-12, SP-18, SP-19, SP-28 or SP-34 active probe arms.
SP-7 Shielded Probe Arm
The SP-7 is a shielded probe arm that is used with a special tip to provide a shielded environment to within 3 mm of the tip end. The SP-7 can be used for capacitance and resistance measurements in low to medium speed (up to 500 MHz) signal applications. The tip is sheathed with Teflon and then an outer steel jacket.