P500CF
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The Tektronix Type P500CF is a cathode-follower probe. It uses a 5718 triode.
It requires +120 VDC for the plate supply and +6.3 VDC for the heater, which can be provided by an oscilloscope (e.g. 517), amplifier (e.g. 1121) or external probe power supply like the 128.
Key Specifications
| Rise time | 13 ns (17.5 ns with 10x attenuator); P500CF with 545A and Type K plug-in |
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Pictures
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Components
Some Parts Used in the P500CF
| Part | Part Number(s) | Class | Description | Used in |
|---|---|---|---|---|
| 5718 | 154-0053-00 | Vacuum Tube (Triode) | subminiature high-frequency triode | 321 • P500CF • P170CF |