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7M11 | {{Plugin Sidebar 2 | | ||
[[ | title=Tektronix 7M11 | | ||
summary=Dual Delay Line | | |||
image=Tek-7m11-front.jpg | | |||
caption=7M11 front panel | | |||
introduced=1969 | | |||
discontinued=1988 | | |||
series=[[7000-series scopes]]| | |||
manuals= | |||
* [[Media:7M11-Instruction-OCR.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. | |||
Rise time is specified as 175 ps maximum, and attenuation is fixed at 2:1. | |||
Delay line connections are 50 Ω [[GR-874]]. | |||
Because it is completely passive and has no bus contacts, | 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 ±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. | |||
(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Tek originally made a carrying enclosure (437-0106-00) to hold a 7M11 for desk use.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 [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}} | |||
{{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 | ±5 V, max. }} | |||
{{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> | <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> | ||
[[Category:7000 series special-function plugins]] | |||
[[Category:Delay lines]] | |||
[[Category:GR874]] |
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