S-52: Difference between revisions
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(same board names as in schematic) |
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{{BeginSpecs}} | {{BeginSpecs}} | ||
{{Spec | Rise time | < 25 ps}} | |||
{{Spec | Output amplitude | 200 mV into 50 Ω (SMA)}} | {{Spec | Output amplitude | 200 mV into 50 Ω (SMA)}} | ||
{{Spec | | {{Spec | Output impedance | 50 Ω "reverse terminated" (i.e. controlled source impedance) }} | ||
{{Spec | Pre-trigger output | 85 ns before main pulse (jitter < 10 ps), +1 V into 50 Ω (BSM) }} | {{Spec | Pre-trigger output | 85 ns before main pulse (jitter < 10 ps), +1 V into 50 Ω (BSM) }} | ||
{{EndSpecs}} | {{EndSpecs}} | ||
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File:Tek s52.jpg | S-52 front | File:Tek s52.jpg | S-52 front | ||
File:Tek s-52.jpg | S-52 in [[7S12]] TDR plugin | File:Tek s-52.jpg | S-52 in [[7S12]] TDR plugin | ||
File:Tek-s52-1.jpg | Timing board | File:Tek-s52-1.jpg | A1 Timing board (right) | ||
File:Tek-s52-2.jpg | | File:Tek-s52-2.jpg | A3 Trigger board (left) | ||
File:Tek-s52-3.jpg | | File:Tek-s52-3.jpg | A2 Tunnel Diode Control board (center) | ||
File:Tek-s52-4.jpg | | File:Tek-s52-4.jpg | Tunnel diode mount | ||
File:Tek-s52-diode-mount.jpg | | File:Tek-s52-diode-mount.jpg | Tunnel diode mount, detail | ||
File:Tek_s-52_schem2.png | File:Tek_s-52_schem2.png |Schematic | ||
File:7s12-s52-incident.jpg | [[7S12]] displaying the incident pulse from an S-52 (nom. < 25 ps) through an [[S-6]] head (nom. < 30 ps). | |||
</gallery> | </gallery> | ||
[[Category:7000 and 3S series sampling heads]] | [[Category:7000 and 3S series sampling heads]] |
Revision as of 14:57, 5 July 2014
The Tektronix S-52 is a pulse generator head compatible with S-series sampling units
like the 3S2, 7S11, and 7S12.
It puts out a 200 mV pulse into a load of 50 Ω. The pulse has a rise time of 25 ps or less. The output is an SMA connector.
In addition to the main pulse output, the S-52 also produces a pre-trigger pulse 85 ns before the main pulse. The jitter between the pre-trigger pulse and the main pulse is specified as less than 10 ps. The pre-trigger pulse uses a BSM connector.
The S-52 generates the main output pulse using a 50 mA low-capacitance tunnel diode with part number 153-0400-00. The S-52 is similar to the S-50, but the S-50 has twice the pulse amplitude. The reason for this is that the S-52 has a 48 Ω resistor between the output tunnel diode and the output connector providing back termination, while the S-50 has no such resistor. Although the S-52 produces a smaller pulse, its output impedance is much better controlled than that of the S-50, and the output resistor may also provide some limited protection for the output tunnel diode.
Specifications
Key Specifications
Rise time | < 25 ps |
---|---|
Output amplitude | 200 mV into 50 Ω (SMA) |
Output impedance | 50 Ω "reverse terminated" (i.e. controlled source impedance) |
Pre-trigger output | 85 ns before main pulse (jitter < 10 ps), +1 V into 50 Ω (BSM) |
Pictures
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S-52 front
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S-52 in 7S12 TDR plugin
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A1 Timing board (right)
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A3 Trigger board (left)
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A2 Tunnel Diode Control board (center)
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Tunnel diode mount
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Tunnel diode mount, detail
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Schematic