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7M11 is a | {{Plugin Sidebar | ||
|manufacturer=Tektronix | |||
|series=7000-series scopes | |||
|type=7M11 | |||
|summary=Dual Delay Line | |||
|image=Tek-7m11-front.jpg | |||
|caption=7M11 front panel | |||
|introduced=1969 | |||
|discontinued=1988 | |||
|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, 75 ns analog delay lines with [[GR-874 connector]]s. Rise time is specified as 175 ps maximum, and attenuation is fixed at 2:1. | |||
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 mass of the 7M11 is 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!) | |||
[[ | 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Tek originally made a carrying enclosure (437-0106-00) to hold a 7M11 for desk use.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 [[Patent US 3426311A|US Patent 3,426,311]], and is similar to the ones in the [[S-1]] and [[S-2]] samplers. | |||
The [[035-5031-00]] TM500 plug-in is roughly equivalent to one half of a 7M11. | |||
{{BeginSpecs}} | |||
{{Spec | Delay | 75 ns (each channel) }} | |||
{{Spec | Delay difference | max. ±30 ps between channels}} | |||
{{Spec | Rise time | 185 ps }} | |||
{{Spec | Attenuation | 2:1 (6 dB) on main outputs, 5:1 (14 dB) on trigger pick-off }} | |||
{{Spec | Input voltage | max. ±5 V }} | |||
{{Spec | Weight | 2.6 kg (!) }} | |||
{{EndSpecs}} | |||
==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.barrytech.com/tektronix/tek7000/tek7m11.html Tek 7M11 @ barrytech.com] | |||
* [http://www.analogdesign.be/vintage-gear/tektronix-7m11-delay-line Tek 7M11 @ analogdesign.be] | |||
==Pictures== | |||
<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> | |||
[[Category:7000 series special-function plugins]] | |||
[[Category:Delay lines]] | |||
[[Category:GR874]] |