View source for 11801

{{Oscilloscope Sidebar 
|manufacturer=Tektronix 
|series=11800-series scopes
|model=11801 
|summary=Digital sampling scope 
|image=Tek11801.jpg 
|caption=Tektronix 11801 
|introduced=1989 
|discontinued=1998+
|designers=Murlan Kaufman;Stan Kaveckis; Agoston Agoston; John Carlson; John Rettig; Jon Lueker; Roy Lewallen
|manuals=
''– 11801 –''
* [[Media:070-7041-00.pdf|11801 Service Manual]]
''– 11801A –''
* [[Media:070-8025-00.pdf|11801A Quick Start]]
* [[Media:070-8021-00.pdf|11801A User Reference]] (OCR)
* [[Media:070-7720-01.pdf|11801A Command Reference]]
* [[Media:070-7738-01.pdf|11801A Programmer Manual]]
''– 11801B –''
* [[Media:070-8783-00.pdf|11801B User Manual]]
* [[Media:070-8781-00.pdf|11801B Service Manual]]
* [[Media:070-8784-00.pdf|11801B Programmer Manual]]
''– 11801C –''
* [[Media:070-9971-01.pdf|11801C User Manual]]
* [[Media:070-9972-02.pdf|11801C Service Manual]]
* [[Media:070-9970-00.pdf|11801C Programmer Manual]]

''– Additional Information –''
* [[Media:Tek 11801 11802 SM11 diagnostics.pdf|Tektronix 11801, 11802, and SM11 Diagnostics]]
{{ROM Images}}
<small>
* [[Media:160-4288-05.bin|160-4288-05]]	A25U611	
* [[Media:160-4384-05.bin|160-4384-05]]	U400	
* [[Media:160-4385-05.bin|160-4385-05]]	U310	
* [[Media:160-4386-05.bin|160-4386-05]]	U410	
* [[Media:160-4394-05.bin|160-4394-05]]	U300
* [[Media:160-5414-04.bin|160-5414-04]]	U210	
* [[Media:160-5415-04.bin|160-5415-04]]	U220
* [[Media:160-5481-04.bin|160-5481-04]]	U630	
* [[Media:160-5482-04.bin|160-5482-04]]	U730	
* [[Media:160-5483-04.bin|160-5483-04]]	U620	
* [[Media:160-5484-04.bin|160-5484-04]]	U720	
* [[Media:160-5485-04.bin|160-5485-04]]	U612	
* [[Media:160-5486-04.bin|160-5486-04]]	U712	
* [[Media:160-5487-04.bin|160-5487-04]]	U600	
* [[Media:160-5494-04.bin|160-5494-04]]	U250	
* [[Media:160-5495-04.bin|160-5495-04]]	U240	
* [[Media:160-5502-02.bin|160-5502-02]]	U602	
* [[Media:160-5503-02.bin|160-5503-02]]	U612
* [[Media:160-5620-04.bin|160-5620-04]]	U700
* [[Media:160-6517-02.bin|160-6517-02]]	U230	
* [[Media:160-6518-02.bin|160-6518-02]]	U240
</small>
}}
The '''Tektronix 11801''' is a digital sampling oscilloscope that takes four [[:Category:11800 series sampling plugins|11800 series plug-in sampling modules]].
Input channel capacity can be expanded up to 68 sampling modules (136 channels) using up to 4 [[SM-11| SM-11 Multi-Channel Units]] if option 1M is installed in the 11801.

The 11801A update was introduced in 1991, the 11801B in 1994.

The [[CSA803]] is effectively a variant of the 11801.

{{BeginSpecs}}
{{Spec | Vertical Resolution | 8 bits − 25 points/div }}
{{Spec | Input Sensitivity | 2 to 255 mV/div in 1 mV/div steps}}
{{Spec | Record Duration | 10 ps to 50 ms}}
{{Spec | Record Length | 512, 1024, 2048, 4096, 5120 samples}}
{{Spec | Sample Rate | up to 200 kHz}}
{{Spec | Jitter | 1.1 ps RMS + 4 ppm of position (typical) }}
{{Spec | Maximum Trigger Input | 1 V<sub>p-p</sub> (1x), 10 V<sub>p-p</sub> (10x), 2.5 V<sub>p-p</sub> prescaler }}
{{Spec | Trigger Sensitivity | 50 mV, DC − 4 GHz, AC coupled trigger prescaler to 10 GHz}}
{{Spec | CRT |
* Plain 11801: 9" monochrome, touch screen
* 11801A/B/C: 8½" color, touch screen }}
{{EndSpecs}}