Difference between revisions of "7M11"

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The Tektronix 7M11 is a plug-in which contains two independent 50 Ω analog delay lines with 75 ns each.  
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The '''Tektronix 7M11''' is a plug-in which contains two independent 50 Ω analog delay lines with 75 ns each.  
 
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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Delay line connections are 50 Ω [[GR-874]].
  
A separate trigger output is available to eliminate an external power splitter.
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To eliminate an external power splitter, a separate trigger output is available through a [[BNC connector]]
Signal through the trigger pick-off output is attenuated by a factor of five. 
 
Delay line connections are 50 Ω [[GR-874]], trigger pickoff is through a [[BNC connector]]
 
 
at 5:1 attenuation (line 1 or 2 switch selectable).
 
at 5:1 attenuation (line 1 or 2 switch selectable).
  
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(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,
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Because it is completely passive and has no bus contacts, the 7M11 can be  
he 7M11 can be operated outside of the mainframe on the desk,  
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operated outside of the mainframe on the desk, freeing a slot for another plug-in.
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Tek originally made a carrying enclosure to hold a 7M11 for desk use.
 
Tek originally made a carrying enclosure to hold a 7M11 for desk use.
  
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<gallery>
 
<gallery>
File:Tek-7m11-front.jpg | Front  
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Tek-7m11-front.jpg | Front  
File:Tek-7m11-right.jpg | Right side
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Tek-7m11-right.jpg | Right side
File:Tek-7m11-fr.jpg    | front components detail, right side
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Tek-7m11-fr.jpg    | front components detail, right side
File:Tek-7m11-fl.jpg    | front components detail, left side
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Tek-7m11-fl.jpg    | front components detail, left side
File:7M11.jpg          | In this specimen, the GR874 connectors were replaced by BNC connectors of adequate quality
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7M11.jpg          | In this specimen, the GR874 connectors were replaced by BNC connectors of adequate quality
File:7m11-circuit.png  | 7M11 circuit diagram
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7m11-circuit.png  | 7M11 circuit diagram
 
</gallery>
 
</gallery>
  

Revision as of 23:24, 14 November 2017

Tektronix 7M11
Dual Delay Line
7M11 front panel

Compatible with 7000-series scopes

Produced from 1970 to 1988

Manuals
Manuals – Specifications – Links – Pictures

The Tektronix 7M11 is a plug-in which contains two independent 50 Ω analog delay lines with 75 ns each. 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 +/- 5V. 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 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.

Specifications

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

Links

Pictures