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S-42: Difference between revisions
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|designers= | |designers= | ||
|manuals= | |manuals= | ||
* [[Media: | * [[Media:070-7191-00.pdf|S-42 Instruction Manual]] (with schematics) | ||
* [[Media:Tek s-42 specifics ordering information.pdf | S-42 Specifications | * [[Media:Tek s-42 specifics ordering information.pdf|S-42 Specifications]] (catalog pages) | ||
}} | }} | ||
The '''Tektronix S-42''' is a sampling head for 1300 nm optical signals. It has an [[FC/PC connector|FC/PC fiberoptic connector]] for the input signal. It is essentially an [[S-4]] sampling head with a photodiode at the input. | The '''Tektronix S-42''' is a sampling head for 1300 nm optical signals. It has an [[FC/PC connector|FC/PC fiberoptic connector]] for the input signal. It is essentially an [[S-4]] sampling head with a photodiode at the input. | ||
Specified accuracy is for connections through 8/ | Specified accuracy is for connections through 8/125 μm single-mode fibre, although a lens in front of the photodiode allows connections using multi-mode fibre as well, at some degradation of response speed. | ||
The manual shows it being used in a [[7S12]]-driven TDR setup with an external [[OT503|OT503 electro-optic converter]] as the optical signal source. | The manual shows it being used in a [[7S12]]-driven TDR setup with an external [[OT503|OT503 electro-optic converter]] as the optical signal source. | ||
{{BeginSpecs}} | {{BeginSpecs}} | ||
{{Spec | Pulse response | 55 ps }} | {{Spec | Pulse response | 55 ps }} | ||
{{Spec | Bandwidth | 6.4 GHz (equiv.) }} | {{Spec | Bandwidth | 6.4 GHz (equiv.) }} | ||
{{Spec | Spectral response | | {{Spec | Spectral response | 1000 – 1700 nm }} | ||
{{Spec | Deflection | | {{Spec | Deflection | 50 μW/Div to 50 mW/Div @ 1300 nm }} | ||
{{Spec | Noise equivalent power | | {{Spec | Noise equivalent power | 42 μW<sub>RMS</sub> max. }} | ||
{{Spec | Max. nondestructive input | | {{Spec | Max. nondestructive input | 10 mW mean, 125 mW peak }} | ||
{{Spec | Features | | {{Spec | Features | | ||
* Mean power meter, dynamic range | * Mean power meter, dynamic range 5 nW to 5 mW (60 dB), bandwidth 100 Hz | ||
}} | }} | ||
{{EndSpecs}} | {{EndSpecs}} | ||
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The S-42 borrows heavily from the [[S-4]] sampling head, re-using the S-4 strobe, sampler and preamp boards. | The S-42 borrows heavily from the [[S-4]] sampling head, re-using the S-4 strobe, sampler and preamp boards. | ||
It uses the same six-diode traveling-wave sampling gate, strobed by | It uses the same six-diode traveling-wave sampling gate, strobed by 125 ps pulses generated using a [[snap-off diode]] driven by an avalanche transistor. | ||
The S-4's SMA input connector is still present internally, and driven electrically in some of the calibration procedures, with the photodiode removed. | The S-4's SMA input connector is still present internally, and driven electrically in some of the calibration procedures, with the photodiode removed. | ||
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Tek s-42 d.JPG | Tek s-42 d.JPG | ||
Tek s42.jpg | Tek s42.jpg | ||
Tek s-42 block diag.png|block diagram | Tek s-42 block diag.png | block diagram | ||
Tek_s-42 schem.png|schematic | Tek_s-42 schem.png | schematic | ||
s42-spectral-response.jpg | S-42 spectral response | s42-spectral-response.jpg | S-42 spectral response | ||
s42-explosion-diagram.jpg | s42-explosion-diagram.jpg | ||
Tek S-42 1989 catalog.png|Description in [[Tek Catalogs|1989 Catalog]] | Tek S-42 1989 catalog.png | Description in [[Tek Catalogs|1989 Catalog]] | ||
Tek s-42 uncapped.jpg | Tek s-42 uncapped.jpg | ||
</gallery> | </gallery> | ||