P6032: Difference between revisions

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The P6032 is a high-speed cathode-follower probe. There is a miniature triode in the probe body. Like all active probes, the P6032 requires power, and for this reason it has two connectors at the scope end of cable. There is a four-pin power connector and a 50-Ohm GR connector for the signal.  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. The probe is rated to 850MHz.  Because the probe contains a small triode, it gets slightly warm during operation.
{{Probe Sidebar
|manufacturer=Tektronix
|model=P6032
|summary=850 MHz cathode-follower probe
|for=1S1
|image=Tek p6032 kit 1.jpg
|caption=P6032
|introduced=1962
|discontinued=(?)
|designers=Murlan Kaufman
|manuals=
* [[Media:070-327.pdf|Tektronix P6032 Manual]]
* [[Media:Tek_P6032_preliminary_manual_1962.pdf|Tektronix P6032 Preliminary Manual]]
}}
The '''Tektronix P6032''' is an 850 MHz cathode-follower probe, intended for use with samplers such as the [[1S1]], [[3S1]], [[3S76]], [[4S1]], and [[4S2]].
It was designed by [[Murlan Kaufman]].


What, exactly, does the clipping line in the probe body do?  It appears to be 21mm of RG174 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."
There is an [[EC1000]] subminiature triode in the probe body, which is why it gets slightly warm during operation.  


The manual is here:
Like all active probes, the P6032 requires power, and for this reason it has two connectors at the scope end of the cable.
* http://w140.com/kurt/p6032.pdf
There is a four-pin power connector and a 50 Ω [[GR-874 connector]] for the signal.
* http://w140.com/kurt/p6032.djvu


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. 
''What, exactly, does the clipping line in the probe body do?''
:''It appears to be 21 mm of RG-174 cable 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."''
{{BeginSpecs}}
{{Spec | Bandwidth | ≥850 MHz }}
{{Spec | Rise time | 0.4 ns max. }}
{{Spec | Attenuation |10× to 1000× in 1-2-5 steps with supplied attenuator heads, 3× without attenuator }}
{{Spec | Dynamic range | ±0.15 V × attenuation }}
{{Spec | Maximum input voltage | ±0.225 V × attenuation, de-rated for CW operation for 500× and 1000× attenuator heads }}
{{Spec | Input resistance | 10 MΩ with any attenuator head, 3 MΩ without attenuator head }}
{{Spec | Input capacitance | 3.6 pF (10× head) to 1.3 pF (1000× head), 7 pF without attenuator head}}
{{Spec | Output impedance | not specified, calibrated for 50 Ω load }}
{{Spec | DC offset | ≈0.5 V (not adjustable)}}
{{EndSpecs}}
==Pictures==
<gallery>
<gallery>
Image:p6032_ext.jpg|External view of P6032 without attenuator attachment.
P6032_ext.jpg | External view of P6032 without attenuator attachment
Image:p6032_int_c.jpg|Internal view of P6032  Probe tip connects directly to triode grid, which is a bare wire coming out of the top of the tube.  Clipping line runs along the body of the probe to the left of the tube socket.   
P6032-schematic.png | P6032 Schematic
P6032_int_c.jpg | Internal view of P6032  Probe tip connects directly to triode grid, which is a bare wire coming out of the top of the tube.  Clipping line runs along the body of the probe to the left of the tube socket.   
P6032x10.jpg | ×20 attenuator tip
P6032_pwr.jpg | Internal view of power supply connector. Signal coax passes through undisturbed.
P6032_risetime.jpg | Display on [[545|545A]] with 1S1 and P6032.  Pulse is generated by Tek [[284]] tunnel diode pulser driving into 50 Ω load, GR-BNC adaptor and then to the probe using a probe to BNC adaptor.  The 10x attenuator tip was used on the P6032.  Timebase is 200 ps/div.
Tek p6032 kit 1.jpg
Tek p6032 kit 2.jpg
Tek p6032 kit 3.jpg
Tek p6032 kit 4.jpg
</gallery>


Image:p6032_pwr.jpg|Internal view of power supply at end of P6032 cable.  Signal coax passes through undisturbed.
{{Parts|P6032}}
</gallery>
 
[[Category:Active oscilloscope probes]]

Revision as of 03:17, 21 July 2022

Tektronix P6032
850 MHz cathode-follower probe
P6032

Compatible with 1S1

Produced from 1962 to (?)

Manuals


Manuals – Specifications – Links – Pictures

The Tektronix P6032 is an 850 MHz cathode-follower probe, intended for use with samplers such as the 1S1, 3S1, 3S76, 4S1, and 4S2. It was designed by Murlan Kaufman.

There is an EC1000 subminiature triode in the probe body, which is why it gets slightly warm during operation.

Like all active probes, the P6032 requires power, and for this reason it has two connectors at the scope end of the cable. There is a four-pin power connector and a 50 Ω GR-874 connector for the signal.

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.

What, exactly, does the clipping line in the probe body do?

It appears to be 21 mm of RG-174 cable 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."

Key Specifications

Bandwidth ≥850 MHz
Rise time 0.4 ns max.
Attenuation 10× to 1000× in 1-2-5 steps with supplied attenuator heads, 3× without attenuator
Dynamic range ±0.15 V × attenuation
Maximum input voltage ±0.225 V × attenuation, de-rated for CW operation for 500× and 1000× attenuator heads
Input resistance 10 MΩ with any attenuator head, 3 MΩ without attenuator head
Input capacitance 3.6 pF (10× head) to 1.3 pF (1000× head), 7 pF without attenuator head
Output impedance not specified, calibrated for 50 Ω load
DC offset ≈0.5 V (not adjustable)

Pictures


Some Parts Used in the P6032

Part Part Number(s) Class Description Used in
EC1000 Vacuum Tube (Triode) subminiature triode P6025 P6032