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{{Oscilloscope Sidebar|
{{Oscilloscope Sidebar  
title=Tektronix 2245|
|manufacturer=Tektronix
image=Tek 2245a 4trace.jpg|
|series=2000-series scopes
caption=Tektronix 2245A |
|model=2245  
introduced=1987 |
|summary=100 MHz portable 4-channel scope
discontinued=1994 |
|image=Tek2245.jpg  
summary=
|caption=Tektronix 2245A
100 MHz 4-channel portable scope|
|introduced=1987  
manuals=
|discontinued=1995
* [[Media:Tek_2252_2247A_2245A_Specs.pdf|Tektronix 2245A/2247A/2252 Specifications (PDF)]]
|designers=
* [http://www.ko4bb.com/manuals/download.php?file=Tektronix/Tektronix_-_2245A/Tektronix_2245_2246_Specification.pdf Tektronix 2245/2246 Specifications (PDF)]
|manuals=
* [http://www-3.unipv.it/lde/strumentazione_strum_banco/oscilloscopio.pdf Tektronix 2245A Operators Manual (PDF)]
'''2245'''
* [http://www.ko4bb.com/manuals/download.php?file=Tektronix/Tektronix_-_2245A/Tektronix_2245A_Oscilloscope_Service_Manual.pdf Tektronix 2245A Service Manual (PDF)]
* [[Media:070-6276-00.pdf        | 2245 Service, April 1987 Edition ]]
* [http://www.ko4bb.com/manuals/download.php?file=Tektronix/Tektronix_-_2245A/Tektronix_2245A_2247A_OPT15.pdf Tektronix 2245A Option 15 Manual (PDF)]
* [[Media:070-6167-00.pdf        | 2245 Operators manual            ]]
* [[Media:tek_2245_2246 specs.pdf | 2245/2246 Specifications        ]]
 
'''2245A'''
* [[Media:070-6558-01.pdf            | 2245A Operators manual          ]]
* [[Media:070-6557-00.pdf            | 2245A Service Manual 070-6557-00 ]] (124MB)
* [[Media:070-7672-00.pdf            | 2245A Service Manual 070-7672-00, SN B016000-up ]]
* [[Media:2252_2247A_2245A_Specs.pdf | 2245A/2247A/2252 Specifications ]]
 
'''alternate copies'''
* [https://www.ko4bb.com/manuals/download.php?file=Tektronix/Tektronix_-_2245A/Tektronix_2245_2246_Specification.pdf           Tektronix 2245/2246 Specifications ]  
* [https://www.ko4bb.com/manuals/download.php?file=Tektronix/Tektronix_-_2245A/Tektronix_2245A_Oscilloscope_Service_Manual.pdf Tektronix 2245A Service Manual     ]
* [https://www.ko4bb.com/manuals/download.php?file=Tektronix/Tektronix_-_2245A/Tektronix_2245A_2247A_OPT15.pdf                 Tektronix 2245A Option 15 Manual   ]
{{ROM Images}}
'''2245A'''
* A16U2408 [[Media:160-5391-00.bin|160-5391-00]]
* A16U2519 [[Media:160-5063-09.bin|160-5063-09]] / [[Media:160-5063-04.bin|160-5063-04]] / [[Media:160-6500-02.bin|160-6500-02]], [[Media:160-6500-00.bin|160-6500-00]]
* A16U2400 [[Media:160-3493-00.bin|160-3493-00]] SC84477P PDIP28 (68HC705?)
}}
}}
The '''Tektronix 2245''' is a 100 MHz four-channel analog oscilloscope.  
The '''Tektronix 2245''' is a 100 MHz four-channel analog oscilloscope, introduced in 1987 (2245A in 1988).
 
Channels 1 and 2 are full-featured, whereas 3 and 4 are limited in both deflection factor and coupling, as they are intended mainly for digital and trigger signals.


It is part of a nearly identical family consisting of the 2245, [[2246]], [[2247]], and [[2252]]. It's the base model of the family.  
The 2245 includes features like AUTO SETUP which automatically adjusts vertical, horizontal, triggering and display controls to provide a stable, triggered display of the waveform in seconds. It offers a dual time base with delayed sweep, and cursor time/voltage measurements with on-screen readout of cursor data and scale factors.


Two channels are fully-functioned, and two are very limited, in both deflection factor and coupling.  
{{BeginSpecs}}
{{Spec | Bandwidth | 100 MHz }}
{{Spec | Deflection| CH 1, CH 2: 2 mV/div to 5 V/div in 1-2-5 seq; CH 3, CH 4: 0.1 V/div and 0.5 V/div, all ±2%; BW limit: 20 MHz ±15%  }}
{{Spec | Vertical modes | CH1,2,3,4, CH2 Invert, Add, Alt, Chop (625 kHz) }}
{{Spec | Input impedance | 1 MΩ ±1.0% // 20 pF ±1 pF }}
{{Spec | Maximum input | 400 V DC + peak AC, or 800 V<sub>p-p</sub> at ≤ 10 kHz) }}
{{Spec | Sweep | A Time Base: 0.5 s/div to 20 ns/div in 1-2-5 seq; B Time Base: 5 ms/div to 20 ns/div in 1-2-5 seq (×10 magnifier to 2 ns/div) }}
{{Spec | Trigger| DC, Noise Reject, HF Reject, LF Reject, AC, TV Line, TV Field }}
{{Spec | Trigger modes| A Mode: Auto Level, Auto, Norm, TV Line, TV Field, Single Seq. B Mode: Runs After Delay, Auto Level, Norm, TV Line (From A Source) }}
{{Spec | Cursors| Time, Volts }}
{{Spec | Interface| Ext Counter/Timer Base Input connector; Ext Z-Axis Input connector }}
{{Spec | CRT | Acceleration 16.4 (−2.7/+13.7) kV }}
{{Spec | Probes| Two [[P6109]] 100 MHz ×10 probes, [[BNC connector]] with a [[readout pin]] }}
{{Spec | Power| 90 − 250 V<sub>AC</sub>, 48 − 445 Hz; 100 W max. }}
{{EndSpecs}}


{{MissingSpecs}}
==Repair Information==
* [[224x PSU Repairs | 2245 Power Supply Repair Information ]]


==Links==
==Links==
[https://groups.io/g/TekScopes/topic/7646896 Backup Battery in Tek 2245A ]


==Pictures==
==Pictures==
<gallery>
<gallery>
File:US Tektronix 2245A FrontRAW.JPG|2245A
Tek2245.jpg                    | 2245
Tek2245.jpg
US Tektronix 2245A FrontRAW.JPG | 2245A
Tek 2245a 4trace.jpg            | 2245A
Tek 2245a square trace.jpg     | 2245A
</gallery>
</gallery>
==Components==
{{Parts|2245}}
{{Parts|2245A}}


[[Category:2246 series scopes]]
[[Category:2246 series scopes]]
[[Category:Specifications needed]]
Qfissler
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