What is the TCP202 calibrator and what oscilloscope models does it work with?

What is the TCP202 calibrator and what oscilloscope models does it work with?

With some TDS oscilloscopes, you can compensate the probe for maximum accuracy using the optional calibrator. Use the calibrator only if your oscilloscope displays the A_ symbol when the current probe is connected.

The TCP202 calibrator is compatible with the TDS510A, TDS520B, TDS520C, TDS520D, TDS540B, TDS540C, TDS540D, TDS580D, TDS654C, TDS680C, TDS684C, TDS694C, TDS724A, TDS724C, TDS724D, TDS754A, TDS754C, TDS754D, TDS784A, TDS784C, TDS784D, and TDS794D.