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image=Tek-7m11-front.jpg | | image=Tek-7m11-front.jpg | | ||
caption=7M11 front panel | | caption=7M11 front panel | | ||
introduced= | introduced=1969 | | ||
discontinued=1988 | | discontinued=1988 | | ||
series=[[7000-series scopes]]| | series=[[7000-series scopes]]| | ||
manuals= | manuals= | ||
* [[Media: | * [[Media:070-0987-00.pdf|7M11 Manual]] (OCR PDF, 2.5MB) | ||
}} | }} | ||
The '''Tektronix 7M11''' is a plug-in which contains two independent 50 Ω analog delay lines | The '''Tektronix 7M11''' is a plug-in which contains two independent 50 Ω, 75 ns analog delay lines. | ||
Rise time is specified as 175 ps maximum, and attenuation is fixed at 2:1. | Rise time is specified as 175 ps maximum, and attenuation is fixed at 2:1. | ||
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at 5:1 attenuation (line 1 or 2 switch selectable). | at 5:1 attenuation (line 1 or 2 switch selectable). | ||
The maximum signal allowed is | The maximum signal allowed is ±5 V. | ||
The mass of the 7M11 about 2.5 kg (5.5 lb), so one must be careful when sliding it into the slot. | The mass of the 7M11 about 2.5 kg (5.5 lb), so one must be careful when sliding it into the slot. | ||
(Generally, Tektronix specifies not to ship mainframes with inserted plug-ins, to protect the bus connectors!) | (Generally, Tektronix specifies not to ship mainframes with inserted plug-ins, to protect the bus connectors!) | ||
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Because it is completely passive and has no bus contacts, the 7M11 can be | Because it is completely passive and has no bus contacts, the 7M11 can be | ||
operated outside of the mainframe on the desk, freeing a slot for another plug-in. | operated outside of the mainframe on the desk, freeing a slot for another plug-in. | ||
Tek originally made a carrying enclosure to hold a 7M11 for desk use. | Tek originally made a carrying enclosure (437-0106-00) to hold a 7M11 for desk use. | ||
The interface between the GR-874 input connector and the trigger pickoff board is described in US Patent 3,426,311. | The interface between the GR-874 input connector and the trigger pickoff board is described in [https://www.google.com/patents/US3426311 US Patent 3,426,311], and is similar to the ones in the [[S-1]] and [[S-2]] samplers. | ||
{{BeginSpecs}} | {{BeginSpecs}} | ||
{{Spec | Delay | 75 ns (each channel) }} | {{Spec | Delay | 75 ns (each channel) }} | ||
{{Spec | Delay difference | max. ±30 ps between channels}} | |||
{{Spec | Rise time | 185 ps }} | {{Spec | Rise time | 185 ps }} | ||
{{Spec | Attenuation | 2:1 (6 dB) | {{Spec | Attenuation | 2:1 (6 dB) on main outputs, 5:1 (14 dB) on trigger pick-off }} | ||
{{Spec | Input voltage | | {{Spec | Input voltage | ±5 V, max. }} | ||
{{Spec | Weight | 2.6 kg (!) }} | {{Spec | Weight | 2.6 kg (!) }} | ||
{{EndSpecs}} | {{EndSpecs}} | ||
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7M11.jpg | In this specimen, the GR874 connectors were replaced by BNC connectors of adequate quality | 7M11.jpg | In this specimen, the GR874 connectors were replaced by BNC connectors of adequate quality | ||
7m11-circuit.png | 7M11 circuit diagram | 7m11-circuit.png | 7M11 circuit diagram | ||
7M11_schem_corr.jpg | Correction R33 value | |||
</gallery> | </gallery> | ||
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[[Category:7000 series special-function plugins]] | [[Category:7000 series special-function plugins]] | ||
[[Category:Delay lines]] | [[Category:Delay lines]] | ||
[[Category:GR874]] |