P6250

The P6250 is an active differential probe from Tektronix with DC to 500 MHz bandwidth. It measures the voltage between its + and - inputs while rejecting the common-mode voltage, which suits switching power supplies, gate drives and differential signals that are not referenced to ground.

Two input ranges are selectable: ±4.25 V (÷5) and ±42 V (÷50), each with a matching offset range, plus a 5 MHz bandwidth limit filter. Input loading is 1 MΩ differential with under 1 pF, and common-mode inputs up to ±35 V are accepted. The probe head takes 0.025 in. square pins on 0.100 in. centres, with adapters for other test points.

The P6250 connects to oscilloscopes with the TekProbe-BNC Level II interface, which powers it and sets the scale automatically, such as the TDS5000, TDS500, TDS600 and TDS700 series. TekConnect oscilloscopes such as the DPO70000, DSA70000, TDS6000 and TDS7000 need the TCA-BNC adapter, and other instruments can use the 1103 TekProbe power supply. Its 1 GHz sibling is the P6251; the TDP0500 is the TekVPI-interface probe of the same class.