P500CF
The Tektronix Type P500CF is a cathode-follower probe.
Like all active probes, it requires power, which can be provided by the oscilloscope or by an external probe power supply like the 128. It requires +120 VDC for the plate supply, and +6.3 VDC for the heater.
The P500CF is discussed in the 128 manual.
Key Specifications
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Pictures
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