131: Difference between revisions
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|class=Amplifier | |class=Amplifier | ||
|series= | |series= | ||
|summary=Current | |summary=Current Probe Amplifier | ||
|image=Tek 131 front.jpg | |image=Tek 131 front.jpg | ||
|caption=Type 131 | |caption=Type 131 Current Probe Amplifier | ||
|for=P6016 | |||
|introduced=1960 | |introduced=1960 | ||
|discontinued=(?) | |discontinued=(?) | ||
|designers= | |designers= | ||
|manuals= | |manuals= | ||
* [[Media:070-237.pdf|Tektronix P6016 manual]] (includes 131 | * [[Media:070-237.pdf|Tektronix P6016 manual]] (includes 131 schematics) | ||
}} | }} | ||
The '''Tektronix 131''' is a | The '''Tektronix Type 131''' is a Current Probe Amplifier used only with the [[P6016]] Current Probe. Type 131s were never given serial numbers, instead, they were produced cronologically in "Models." Models 1 thru 3 looked alike, while Model 4 got a redesigned enclosure like that used by the Type 134. | ||
All four Type 131 Models used PNP transistors, thus requiring a negative power source. Models 1 thru 3 were hard-wired to their separate minus 19 V power supplies, while Model 4 got a power supply, 015-027, with a proprietary Tektronix coaxial connector. The center pin of the Type 131 Model 4 power supply connector is grounded, so the outer contact is ~19 V negative. Note that the 015-0058-01 power supply for the Type 134 uses the same connector with the same relative voltage levels (center conductor ~19 V more positive than the outer contact) but the negative outer contact on the Type 134 power supply is held close to ground. So the Type 131 Model 4 will only work with the correct 015-027 Power Supply. | |||
Using the wrong power supply with either amplifier version will short circuit the power supply output. Tektronix claims that this will not damage the 015-0058-01 power supply if connected to a Type 131. Damage to the 015-027 power supply seems likely if it is connected to a Type 134. | |||
Power supplies for Type 134s are labeled "POWER SUPPLY FOR TYPE 134", while those for Type 131 Model 4s have no marking other than Tektronix and 015-027. In addition, all Type 131 power supplies have the AC line connector built onto the end of the power supply housing, while the 134 power supplies came with a ~3' AC line cord and plug. | |||
{{BeginSpecs}} | {{BeginSpecs}} | ||
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==Pictures== | ==Pictures== | ||
<gallery> | <gallery> | ||
Tek 131 front.jpg | | Tek 131 front.jpg | Type 131 Model 4 Front | ||
Tek_p6016_131_3.jpg | | Tek_p6016_131_3.jpg | Type 131 Model 3 Front | ||
Tek 131 side.jpg | | Tek 131 side.jpg | Type 131 Model 4 Side View | ||
Tek_p6016_131_2.jpg | | Tek_p6016_131_2.jpg | Type 131 Model 3 with P6016 | ||
Tek 131 schem.png| | Tek 131 schem.png|Schematic, Models 1-3 | ||
Tek 131 early 1.jpg| | Tek 131 early 1.jpg|Type 131 Model 3, with attached power supply | ||
Tek 131 early 2.jpg| | Tek 131 early 2.jpg|Type 131 Model 3 | ||
Tek 131 early 3.jpg| | Tek 131 early 3.jpg|Type 131 Model 3 | ||
Tek 131 early 4.jpg| | Tek 131 early 4.jpg|Type 131 Model 3 | ||
Tek 131 early 5.jpg| | Tek 131 early 5.jpg|Type 131 Model 3 | ||
Tek 131 early 6.jpg| | Tek 131 early 6.jpg|Type 131 Model 3 | ||
Tek 131 early 7.jpg| | Tek 131 early 7.jpg|Type 131 Model 3 | ||
</gallery> | </gallery> | ||
[[Category:Oscilloscope current probes]] | [[Category:Oscilloscope current probes]] | ||
Revision as of 16:34, 3 March 2023
The Tektronix Type 131 is a Current Probe Amplifier used only with the P6016 Current Probe. Type 131s were never given serial numbers, instead, they were produced cronologically in "Models." Models 1 thru 3 looked alike, while Model 4 got a redesigned enclosure like that used by the Type 134.
All four Type 131 Models used PNP transistors, thus requiring a negative power source. Models 1 thru 3 were hard-wired to their separate minus 19 V power supplies, while Model 4 got a power supply, 015-027, with a proprietary Tektronix coaxial connector. The center pin of the Type 131 Model 4 power supply connector is grounded, so the outer contact is ~19 V negative. Note that the 015-0058-01 power supply for the Type 134 uses the same connector with the same relative voltage levels (center conductor ~19 V more positive than the outer contact) but the negative outer contact on the Type 134 power supply is held close to ground. So the Type 131 Model 4 will only work with the correct 015-027 Power Supply.
Using the wrong power supply with either amplifier version will short circuit the power supply output. Tektronix claims that this will not damage the 015-0058-01 power supply if connected to a Type 131. Damage to the 015-027 power supply seems likely if it is connected to a Type 134.
Power supplies for Type 134s are labeled "POWER SUPPLY FOR TYPE 134", while those for Type 131 Model 4s have no marking other than Tektronix and 015-027. In addition, all Type 131 power supplies have the AC line connector built onto the end of the power supply housing, while the 134 power supplies came with a ~3' AC line cord and plug.
Key Specifications
| Sensitivity | 1 mA/Div to 1 A/Div, 1-2-5 (scope input fixed at 50 mV/Div) |
|---|---|
| Noise | 0.1 mAp-p |
| Risetime | 20 ns (eq. 17 MHz -3 dB) |
| Lower frequency limit | 50 Hz |
| Delay time | 32 ns typ. |
(all specifications are overall values including the P6016 probe)
Pictures
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Type 131 Model 4 Front
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Type 131 Model 3 Front
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Type 131 Model 4 Side View
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Type 131 Model 3 with P6016
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Schematic, Models 1-3
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Type 131 Model 3, with attached power supply
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Type 131 Model 3
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Type 131 Model 3
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Type 131 Model 3
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Type 131 Model 3
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Type 131 Model 3
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Type 131 Model 3
