7B90P: Difference between revisions

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{{Plugin Sidebar |
{{Plugin Sidebar  
manufacturer=Tektronix | type=7B90 |
|manufacturer=Tektronix  
summary=400 MHz Programmable Timebase|
|series=7000-series scopes
image=7B90P_front.jpg |  
|type=7B90P
caption=Tektronix 7B90P front |
|summary=400 MHz programmable timebase
introduced=1978 |
|image=7B90P_front.jpg  
discontinued=1989 |
|caption=Tektronix 7B90P front  
series=7000-series scopes|
|introduced=1978  
manuals=
|discontinued=1989  
* [http://w140.com/smb/7b90p_sm.pdf Tektronix 7B90P (OCR, PDF)]
|manuals=
* [[Media:070-2309-00.pdf|7B90P Instruction Manual]] (OCR, PDF)
* [[Media:47W-4493-1.pdf|7A16P and 7B90P Brochure]]
 
{{ROM Images}}
* U1030: [[Media:160-1513-00.bin|160-1513-00]]
* U830:  [[Media:160-1514-00.bin|160-1514-00]]
}}
}}
The '''Tektronix 7B90P''' is a digitally programmable 400 MHz time-base plug-in for the digitizing mainframes of the [[7000-series scopes|7000 series]].  
The '''Tektronix 7B90P''' is a digitally programmable 400 MHz time-base plug-in for the digitizing mainframes of the [[7000-series scopes|7000 series]].  
Except for the sweep calibration screwdriver adjustment and the external trigger input terminator switch all other controls are programmable.  
All controls are programmable except for the sweep calibration screwdriver adjustment and the external trigger input terminator switch.
The local/remote state of the 7B90P is slaved to the local/remote state of the mainframe.
The local/remote state of the 7B90P is slaved to the local/remote state of the mainframe.


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{{Spec | Sweep | 10 ns/Div to 500 ms/Div (1-2-5), ×10 magnifier (down to 500 ps/Div), no variable sweep, adjustable and programmable holdoff}}
{{Spec | Sweep | 10 ns/Div to 500 ms/Div (1-2-5), ×10 magnifier (down to 500 ps/Div), no variable sweep, adjustable and programmable holdoff}}
{{Spec | Excluded sweep | First 10 ns in 79XX programmable mainframes }}
{{Spec | Excluded sweep | First 10 ns in 79XX programmable mainframes }}
{{Spec | Trigger Sensitivity PP Auto Mode AC or DC | 125 mV or 0.5 Div up to 50 MHz, 375 mV or 1.5 Div up to 400 MHz}}
{{Spec | Trigger Sensitivity |
{{Spec | Trigger Sensitivity Norm or Single Sweep AC | 100 mV or 0.3 Div up to 50 MHz, 250 mV or 1.5 Div up to 400 MHz}}
* PP Auto Mode AC or DC: 125 mV or 0.5 Div up to 50 MHz, 375 mV or 1.5 Div up to 400 MHz
* Norm or Single Sweep AC: 100 mV or 0.3 Div up to 50 MHz, 250 mV or 1.5 Div up to 400 MHz
}}
{{Spec | Jitter | <100 ps at 400 MHz }}
{{Spec | Jitter | <100 ps at 400 MHz }}
{{Spec | Ext. Trigger 1 MΩ // 20 pF| Max. 250 V DC+peak AC }}
{{Spec | Ext. Trigger | 1 MΩ: 20 pF, max. 250 V DC+peak AC; 50 Ω: max. 1 W}}
{{Spec | Ext. Trigger 50 Ω| Max. 1 W}}
{{Spec | Sweep/Trigger Modes | Peak-Peak Auto, Auto, Norm, Single Sweep}}
{{Spec | Sweep/Trigger Modes | Peak-Peak Auto, Auto, Norm, Single Sweep}}
{{EndSpecs}}
{{EndSpecs}}

Revision as of 06:58, 4 April 2022

Tektronix 7B90P
400 MHz programmable timebase
Tektronix 7B90P front

Compatible with 7000-series scopes

Produced from 1978 to 1989

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

The Tektronix 7B90P is a digitally programmable 400 MHz time-base plug-in for the digitizing mainframes of the 7000 series. All controls are programmable except for the sweep calibration screwdriver adjustment and the external trigger input terminator switch. The local/remote state of the 7B90P is slaved to the local/remote state of the mainframe.

Key Specifications

Sweep 10 ns/Div to 500 ms/Div (1-2-5), ×10 magnifier (down to 500 ps/Div), no variable sweep, adjustable and programmable holdoff
Excluded sweep First 10 ns in 79XX programmable mainframes
Trigger Sensitivity
  • PP Auto Mode AC or DC: 125 mV or 0.5 Div up to 50 MHz, 375 mV or 1.5 Div up to 400 MHz
  • Norm or Single Sweep AC: 100 mV or 0.3 Div up to 50 MHz, 250 mV or 1.5 Div up to 400 MHz
Jitter <100 ps at 400 MHz
Ext. Trigger 1 MΩ: 20 pF, max. 250 V DC+peak AC; 50 Ω: max. 1 W
Sweep/Trigger Modes Peak-Peak Auto, Auto, Norm, Single Sweep


Internals

The 7B90P is controlled by a Motorola 6800 microprocessor.

Pictures


Custom ICs used in the 7B90P

Page Model Part nos Description Designers Used in
155-0049-00 M079G 155-0049-00 155-0049-01 155-0049-02 sweep control with lockout Bill DeVey 335 464 465 466 475 475A 475M 485 5B31 5B40 5B52 5B42 5B44 7B53A 7B80 7B85 7B87 7B92A 7B90P 7B10 7B15 SC502 7B42N AN/USM-281C 067-0657-00
155-0109-00 M120B 155-0109-00 155-0109-01 trigger Gary Vance 5B25N 5B31 5B40 5B42 5B44 5S14N 7B50A 7B53A 7B80 7B85 7B87 7B81P 7B90P 7S14 7612D SC502 SC503 SC504
155-0126-00 M121 155-0126-00 trigger source selector and P-P auto amplifier Art Metz 7B50A 7B80 7B85 7B87 7B81P 7B90P
155-0164-00 H526(?) 155-0164-00 time slot switch 7A16P 7B90P 7A29P