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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: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. | ||
Delay line connections are 50 Ω [[GR-874]]. | |||
To eliminate an external power splitter, a separate trigger output is available through a [[BNC connector]] | |||
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 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!) | ||
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. | 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. | |||
Tek originally made a carrying enclosure (437-0106-00) to hold a 7M11 for desk use.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 [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}} | ||
==Links== | ==Links== | ||
* [[Media:Tekscope 1970 V2 N1 Feb 1970.pdf | Tekscope Vol. 2 No. 1, Feb 1970]] | |||
* [http://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_7000_series_special/7M11.html Tek 7M11 @ amplifier.cd] | * [http://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_7000_series_special/7M11.html Tek 7M11 @ amplifier.cd] | ||
* [http://www.barrytech.com/tektronix/tek7000/tek7m11.html Tek 7M11 @ barrytech.com] | * [http://www.barrytech.com/tektronix/tek7000/tek7m11.html Tek 7M11 @ barrytech.com] | ||
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<gallery> | <gallery> | ||
Tek-7m11-front.jpg | Front | |||
Tek-7m11-right.jpg | Right side | |||
Tek-7m11-fr.jpg | front components detail, right side | |||
Tek-7m11-fl.jpg | front components detail, left side | |||
7M11.jpg | In this specimen, the GR874 connectors were replaced by BNC connectors of adequate quality | |||
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]] |