7M11: Difference between revisions

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7M11 is a plugin which contains two independent 50 Ohms analog delay lines with 75nS each. Risetime is specified as max. 175pS and attenuation is fixed at two. A separate trigger output is available to eliminate an external power splitter and it is attenuated by a factor of five. Unfortunately there are four GR-874 50-ohm connectors and BNC-adapters are hard to find in the mean time.
{{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)
}}
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.  


Max. signal allowed is +-5V.
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).


Because its completely passive and has no bus connector, it can be operated outside of the mainframe on the desk, giving free an additional slot for another plugin.
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!)


[[Image:7M11.jpg|200px|thumb|left|Connectors were changed to BNC with adequately quality]]
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Tek originally made a carrying enclosure (437-0106-00) to hold a 7M11 for desk use.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==
 
* [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]
{{Documents|Link=7M11}}
{{PatentLinks|7M11}}
 
==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]]

Latest revision as of 01:38, 9 July 2024

Tektronix 7M11
Dual Delay Line
7M11 front panel

Compatible with 7000-series scopes

Produced from 1969 to 1988

Manuals
(All manuals in PDF format unless noted otherwise)
Manuals – Specifications – Links – Pictures

The Tektronix 7M11 is a plug-in which contains two independent 50 Ω, 75 ns analog delay lines with GR-874 connectors. 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 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.

Key Specifications

Delay 75 ns (each channel)
Delay difference max. ±30 ps between channels
Rise time 185 ps
Attenuation 2:1 (6 dB) on main outputs, 5:1 (14 dB) on trigger pick-off
Input voltage max. ±5 V
Weight 2.6 kg (!)

Links

Documents Referencing 7M11

Document Class Title Authors Year Links
Tekscope 1969 V1 N5 Oct 1969.pdf Article Introducing the New Generation 1969 7000-series scopes • 7504 • 7704 • 7A11 • 7A12 • 7A13 • 7A14 • 7A16 • 7A22 • 7S11 • 7M11 • 7B50 • 7B51 • 7B70 • 7B71 • 7T11 • R5030 • 7000 series readout system • Miniature relays • Cam switches • Industrial Design • T7500 • T7700 • P6052 • P6053 • C-50 • C-51 • 204-2
Tekscope 1970 V2 N1 Feb 1970.pdf Article Basic Sampling 1970 Sampling • 7T11 • 7S11 • 7M11
7000 series brochure March 1973.pdf Brochure 7000 series brochure, March 1973 1973 7A11 • 7A12 • 7A13 • 7A14 • 7A15A • 7A16A • 7A17 • 7A18 • 7A19 • 7A21N • 7A22 • 7B50 • 7B53A • 7B70 • 7B71 • 7B92 • 7CT1N • 7D11 • 7D13 • 7D14 • 7D15 • 7M11 • 7L12 • 7S11 • 7S12 • 7T11 • 7704A • R7704 • 7904 • R7903 • 7603 • R7603 • 7403N • R7403N • 7313 • R7313 • 7613 • R7613 • 7623 • R7623 • P7001

Patents that may apply to 7M11

Page Title Inventors Filing date Grant date Links
Patent US 3426311A Transition device Ross W Gifford 1966-06-16 1969-02-04 7M11 • 3T7 • 035-5031-00

Pictures

  • Front

    Front

  • Right side

    Right side

  • front components detail, right side

    front components detail, right side

  • front components detail, left side

    front components detail, left side

  • In this specimen, the GR874 connectors were replaced by BNC connectors of adequate quality

    In this specimen, the GR874 connectors were replaced by BNC connectors of adequate quality

  • 7M11 circuit diagram

    7M11 circuit diagram

  • Correction R33 value

    Correction R33 value

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