7M11: Difference between revisions
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{{Plugin Sidebar | {{Plugin Sidebar | ||
manufacturer=Tektronix | type=7M11 | | |manufacturer=Tektronix | ||
summary=Dual Delay Line | | |series=7000-series scopes | ||
image=Tek-7m11-front.jpg | | |type=7M11 | ||
caption=7M11 front panel | | |summary=Dual Delay Line | ||
introduced=1969 | | |image=Tek-7m11-front.jpg | ||
discontinued=1988 | |caption=7M11 front panel | ||
|introduced=1969 | |||
manuals= | |discontinued=1988 | ||
|manuals= | |||
* [[Media:070-0987-00.pdf|7M11 Manual]] (OCR PDF, 2.5MB) | * [[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. | 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]]. | Delay line connections are 50 Ω [[GR-874]]. | ||
To eliminate an external power splitter, a separate trigger output is available through a [[BNC connector]] | 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). | ||
at 5:1 attenuation (line 1 or 2 switch selectable). | |||
The maximum signal allowed is ±5 V. | 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. | 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!) | ||
(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 | Because it is completely passive and has no bus contacts, the 7M11 can be | ||
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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. | 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}} |
Revision as of 04:05, 28 December 2021
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.
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 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.
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 | ±5 V, max. |
Weight | 2.6 kg (!) |
Links
- Tekscope Vol. 2 No. 1, Feb 1970
- Tek 7M11 @ amplifier.cd
- Tek 7M11 @ barrytech.com
- Tek 7M11 @ analogdesign.be
Pictures
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Front
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Right side
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front components detail, right side
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front components detail, left side
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In this specimen, the GR874 connectors were replaced by BNC connectors of adequate quality
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7M11 circuit diagram
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Correction R33 value