I have recently acquired a Tek 460A scope and a mixed bag of oscilloscope probes. I have a very basic question about the probes:
One of the probes is a Tek P2200. This is a 1X/10X switchable probe with a simple BNC connector on the back. If I connect this up to a 16V power supply and set the probe to 10X, the scope reads 1.6V. No surprise there.
The other probe is a Tek P6121, which has a chunkier BNC connector on the back that includes an additional pin on the outside ring (that is obviously engaging with some contacts on the scope). The probe is labelled 10X, but when connected to the same 16V power supply the scope registers 16V. Is this because (a) the probe is somehow communicating its attenuation factor to the scope, or (b) is this really a 1X probe?