Logic testing

Huntron Instruments has released the Tracker 2700 which now extends the capabilities of power-off testing to troubleshoot low voltage logic circuitry.

Its low voltage ranges also make it suitable for testing passive devices such as high value capacitors while still in-circuit.

Using a power off test method known as Tracker Signature Analysis, it eliminates the risk of further circuit damage which can occur when power is applied.

The instrument also incorporates SigAssist which displays real-time numeric information relating directly to the displayed signature.

Information such as breakdown voltage, resistance, capacitance and power are displayed on the LCD to assist in signature interpretation.

Due to modern complex switching power supplies with many passive components the instrument allows resistors, capacitors and inductors to be analysed without turning on the solid state devices.

The passive devices are essentially tested 'out of circuit'. Today's electronics devices use 3 V or lower logic circuits - the 2700 has 21 selectable voltage/resistance ranges available in five frequencies resulting in a total of 105 combinations of voltage, source resistance and test frequency.