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P6032: Difference between revisions
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The triode has limited dynamic range, so attenuator attachments are provided that attach to the tip of the probe. | The triode has limited dynamic range, so attenuator attachments are provided that attach to the tip of the probe. | ||
These attenuators also reduce the loading of the probe on the probed circuit. | These attenuators also reduce the loading of the probe on the probed circuit. | ||
{{BeginSpecs}} | {{BeginSpecs}} | ||
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{{Spec | DC offset | ≈0.5 V (not adjustable)}} | {{Spec | DC offset | ≈0.5 V (not adjustable)}} | ||
{{EndSpecs}} | {{EndSpecs}} | ||
==Internals== | |||
The body of the probe contains a clipping line composed of what appears to be 21 mm of RG-174 coax connected to the triode's cathode at one end and open at the other end. | |||
The circuit description in the manual describes it vaguely, saying only that, "The clipping line reduces signal aberration to a minimum." | |||
Page 40 of the [[Media:062-1146-00.pdf|Tektronix Probe Circuits concept book]] explains in more depth, | |||
<blockquote> | |||
The section of 50 Ω coax tied to V1 cathode damps ringing in the high frequency response. | |||
The coax is terminated in an open circuit to reflect a short circuit 1/4 wavelength from the termination. | |||
Since voltage does not exist at a short circuit, the ringing is damped. | |||
</blockquote> | |||
The "V1" in the preceding excerpt refers to V103 in the P6032. | |||
==Pictures== | ==Pictures== | ||