Data Sheet
Aim I-prober 520
 - a breakthrough in current measurement technology !
Key Features
Current measurement from insulated probing of conductor
Suitable for observation and measurement of current in 
PCB tracks, component leads and ground planes
Wide dynamic range of 10mA to 20A peak to peak
Wide bandwidth of DC to 5MHz 
Low noise figure equivalent to <6mA rms at full bandwidth
Safety rated to 300V Cat II (600V Cat I)
Suitable for connection to any oscilloscope
High accuracy general purpose H-field probe
Converts to standard ‘closed magnetic circuit’ current probe
A technology breakthrough
The I-prober 520 achieves something radically new.
It can observe and measure currents in PCB tracks and other conductors where conventional current probes can’t be used. 
This includes captive wires into components, the legs of integrated circuits, and PCB ground planes.
Conventionally, current can only be measured by either breaking the circuit to insert a shunt resistor, or by surrounding the 
conductor by a loop of magnetic material as in a standard current probe.
The I-prober 520 enables currents, from dc up to 5MHz, to be observed and measured simply by placing its insulated tip onto 
the conductor.
Unique Capabilities
No requirement to break or surround the conductor
Observe and measure currents in PCB tracks directly
Minimal disturbance to circuit conditions through very 
low insertion impedance and stray capacitance
Useable in confined and difficult to access spaces
Measures current into surface mount components, 
IC legs and short component leads
Can observe currents flowing within ground planes
Useable on high voltage conductors and in high 
temperature areas





