EEVblog

EEVblog 1744 - NEW Micsig DP700 High Voltage Differential Probe

The video reviews Micsig's new DP700 high‑voltage differential probe, a single‑head successor to the earlier dual‑head MDP700. Dave Jones highlights its 700 V peak rating, 100 MHz bandwidth (with a 5 MHz limit option), auto‑zero feature, and USB‑C power, positioning it as a more cost‑effective, compact alternative for oscilloscope users. Key performance data include a common‑mode rejection ratio (CMRR) of about 30 dB at 10 MHz, matching the spec after earlier models fell short. Bandwidth testing shows a –3 dB point just under 100 MHz, and gain measurements confirm the expected 20× attenuation. The probe’s calibration certificate and Fluke‑based verification add confidence in its accuracy. Jones demonstrates the probe’s setup, emphasizing twisted leads to minimize external noise and the importance of averaging on a high‑resolution scope to extract low‑level signals. He notes practical concerns such as the non‑standard barrel jack and the need for short banana‑plug leads for optimal CMRR testing. Overall, the DP700 offers a solid balance of voltage range, bandwidth, and usability, making it suitable for mains‑level diagnostics and other high‑voltage applications, while its single‑unit design may lower manufacturing costs and price points.