Difference between revisions of "7M11"

From TekWiki
Jump to navigation Jump to search
m
(6 intermediate revisions by 2 users not shown)
Line 4: Line 4:
 
image=Tek-7m11-front.jpg |  
 
image=Tek-7m11-front.jpg |  
 
caption=7M11 front panel |
 
caption=7M11 front panel |
introduced=1970 |
+
introduced=1969 |
 
discontinued=1988 |
 
discontinued=1988 |
 
series=[[7000-series scopes]]|
 
series=[[7000-series scopes]]|
Line 11: Line 11:
 
}}
 
}}
  
The '''Tektronix 7M11''' is a plug-in which contains two independent 50 Ω analog delay lines with 75 ns each.  
+
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.  
 
    
 
    
Line 19: Line 19:
 
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 +/- 5V.  
+
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 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!)
Line 25: Line 25:
 
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  
 
operated outside of the mainframe on the desk, freeing a slot for another plug-in.
 
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Tek originally made a carrying enclosure to hold a 7M11 for desk use.
+
Tek originally made a carrying enclosure (437-0106-00) to hold a 7M11 for desk use.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.
+
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}}
 
{{Spec | Delay | 75 ns (each channel) }}
 
{{Spec | Delay | 75 ns (each channel) }}
 +
{{Spec | Delay difference | max. ±30 ps between channels}}
 
{{Spec | Rise time | 185 ps }}
 
{{Spec | Rise time | 185 ps }}
{{Spec | Attenuation | 2:1 (6 dB), main outputs / 5:1 (14 dB), trigger pick-off }}
+
{{Spec | Attenuation | 2:1 (6 dB) on main outputs, 5:1 (14 dB) on trigger pick-off }}
{{Spec | Input voltage | +/- 5 V, max. }}
+
{{Spec | Input voltage | ±5 V, max. }}
 
{{Spec | Weight | 2.6 kg (!) }}
 
{{Spec | Weight | 2.6 kg (!) }}
 
{{EndSpecs}}
 
{{EndSpecs}}
Line 53: Line 54:
 
7M11.jpg          | In this specimen, the GR874 connectors were replaced by BNC connectors of adequate quality
 
7M11.jpg          | In this specimen, the GR874 connectors were replaced by BNC connectors of adequate quality
 
7m11-circuit.png  | 7M11 circuit diagram
 
7m11-circuit.png  | 7M11 circuit diagram
 +
7M11_schem_corr.jpg | Correction R33 value
 
</gallery>
 
</gallery>
  
Line 58: Line 60:
 
[[Category:7000 series special-function plugins]]
 
[[Category:7000 series special-function plugins]]
 
[[Category:Delay lines]]
 
[[Category:Delay lines]]
 +
[[Category:GR874]]

Revision as of 03:38, 24 March 2021

Tektronix 7M11
Dual Delay Line
7M11 front panel

Compatible with 7000-series scopes

Produced from 1969 to 1988

Manuals
Manuals – Specifications – Links – Pictures

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 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.

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

Pictures