Agilent / HP / Keysight 547A
547A Current Tracer
Description
This unit is a hand held current tracer that provides a fast, easy, and economical way to troubleshoot wired AND buses and three-state buses to pinpoint the one bad IC on a stuck node, locate hairline solder bridges, or find back plane and motherboard shorts.
It precisely locates low-impedance faults in digital circuits by locating current sources or sinks, and troubleshoots circuits carrying fast rise-time current pulses.
Using a one-light indicator, this unit displays transitions, single pulses, and pulse trains.
Because it is not voltage-sensitive, the tracer operates on all logic families with current pulses exceeding 1mA, including CMOS, where even lightly-loaded outputs can have up to 2 to 3mA of instantaneous charging current.
Key Points
Wide dynamic range.
Fingertip indicator.
Sensitivity to follow traces in multilayer boards.
Stretching for single current pulse display.
Sensitivity: 1 mA to 1A.
Specifications
Wide dynamic range
Fingertip indicator
Sensitivity to follow traces in multilayer boards
Stretching for single current pulse display
Sensitivity: 1mA to 1A
Frequency Response:
Light indicates single-step current transitions; single pulses >=50ns in width; pulse trains to 10MHz (typically 20MHz for current pulses >=10mA)
Risetime:
Light indicates current transitions with risetimes <=200ns at 1mA
Voltage: 4.5 to 18Vdc
Input Current: <=75mA
Maximum Ripple: ±500mV above 5Vdc
Overvoltage Protection: ±25 Vdc for one minute
Temperature: 0° to 55° C
