Place the spring-loaded test needle on the signal, set the spring-loaded ground needle next to it and release. The flexible arm holds the probe in position and the N52 neodymium magnet in the base keeps it on the PCBite base plate. The SQ100 is a passive 10:1 probe for measurements up to 100 MHz, with 10 MΩ and 13 pF at the tip and a standard BNC connector. It has no probe ID pin, so the oscilloscope channel is set to 10:1 by hand.
The insulated probe can also be used handheld. A low center of gravity keeps it steady when used handsfree, and color coded cable holders in four channel colors show which probe goes to which input. An adjustment tool is included for compensating the probe to oscilloscope inputs from 8 pF to 27 pF.
The ground spring needle gives a short ground path for handsfree use and the ground spring does the same handheld, both at the full rated bandwidth. For ground points further away, a test hook, an alligator clip and ground leads with 2.54 mm (0.100 in) jumper connectors, often called Dupont connectors, are included.
The SQ100 is designed to IEC 61010-031 and rated CAT II 300 V RMS with the finger protection mounted. A PCBite base plate and holders are required for handsfree use.

















