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The Tektronix 2245 is a 100MHz four channel* analog oscilloscope. It's part of a nearly identical family consisting of the 2245, [[2246]], [[2247]], and [[2252]]. It's the base model of the family.
{{Oscilloscope Sidebar |
title=Tektronix 2245 |
summary=100 MHz portable 4-channel scope |
image=Tek2245.jpg |
caption=Tektronix 2245 |
introduced=1988 |
discontinued=1995 |
manuals=
<!-- * [[Media:Tek_2252_2247A_2245A_Specs.pdf|Tektronix 2245A/2247A/2252 Specifications (PDF)]] -->
* [[Media:070-6167-00.pdf|Tektronix 2245 Operators manual  (PDF))]]
* [[Media:070-6558-01.pdf|Tektronix 2245A Operators manual  (PDF))]]


Two channels are fully-functioned, and two are very limited, in both deflection factor and coupling.  
* [http://www.ko4bb.com/manuals/download.php?file=Tektronix/Tektronix_-_2245A/Tektronix_2245_2246_Specification.pdf Tektronix 2245/2246 Specifications (PDF)]


* [http://www.ko4bb.com/manuals/download.php?file=Tektronix/Tektronix_-_2245A/Tektronix_2245A_Oscilloscope_Service_Manual.pdf Tektronix 2245A Service Manual (PDF)]


* [http://www.ko4bb.com/Manuals/09%29_Misc_Test_Equipment/1%29_Brochures_and_Datasheets/TEK%202252,2247A,2245A%20SPECS.PDF Tektronix 2245A/2247A/2252 Specifications (PDF)]
* [http://www.ko4bb.com/manuals/download.php?file=Tektronix/Tektronix_-_2245A/Tektronix_2245A_2247A_OPT15.pdf Tektronix 2245A Option 15 Manual (PDF)]
* [http://www.ko4bb.com/Manuals/Tektronix/Tektronix_-_2245A/Tektronix_2245_2246_Specification.pdf Tektronix 2245/2246 Specifications (PDF)]
 
* [http://www-3.unipv.it/lde/strumentazione_strum_banco/oscilloscopio.pdf Tektronix 2245A Operators Manual (PDF)]
* [[Media:2252_2247A_2245A_Specs.pdf|Tektronix 2245A/2247A/2252 Specifications (PDF, OCR)]]
* [http://www.ko4bb.com/Manuals/Tektronix/Tektronix_-_2245A/Tektronix_2245A_Oscilloscope_Service_Manual.pdf Tektronix 2245A Service Manual (PDF)]
* [[Media:tek_2245_2246 specs.pdf|Tektronix 2245/2246 Specifications (PDF, OCR)]]
* [http://www.ko4bb.com/Manuals/Tektronix/Tektronix_-_2245A/Tektronix_2245A_2247A_OPT15.pdf Tektronix 2245A Option 15 Manual (PDF)]
<!-- * [[Media:070-6558-01.pdf|Tektronix 2245A Operators Manual (PDF, OCR)]] -->
}}
 
The '''Tektronix 2245''' is a 100 MHz four-channel analog oscilloscope.  Channels 1-2 are fully-functional, whereas 3-4 are limited in both deflection factor and coupling, as they are intended mainly for digital and trigger signals.
 
The 2245 includes features like AUTO SETUP which automatically adjusts vertical, horizontal, and triggering and display controls to provide a stable, triggered display of the waveform in seconds; Dual Time base with Delayed Sweep; Cursor Time/Voltage Measurements; On-Screen Scale Factor Readouts.
 
{{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 Operating 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 Voltage| 400 V (DC + peak AC) or 800 V (p-p ac at ≤ 10 kHz) }}
{{Spec | Sweep Speeds| 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 | Trigger Source A & B| Vert, CH1, 2, 3, 4, Line }}
{{Spec | Cursors| Time, Volts }}
{{Spec | Interface| Ext Counter/Timer Base Input connector; Ext Z-Axis Input connector }}
{{Spec | Probes| Two [[P6109]] 100 MHz ×10 probes, [[BNC connector]] with a [[readout pin]] }}
{{Spec | Power| 100 W max, 90 − 250 V<sub>AC</sub>, 48 − 445 Hz }}
{{EndSpecs}}
 
==Repair Information==
* [[224x PSU Repairs|2245 Power Supply Repair Information]]
 
==Links==
[https://groups.io/g/TekScopes/topic/7646896 Backup Battery in Tek 2245A]
 
==Pictures==
 
<gallery>
File:US Tektronix 2245A FrontRAW.JPG|2245A
Tek2245.jpg
Tek 2245a 4trace.jpg
Tek 2245a square trace.jpg|2245A
</gallery>
 
[[Category:2246 series scopes]]

Revision as of 23:27, 6 June 2019

Manuals – Specifications – Links – Pictures


The Tektronix 2245 is a 100 MHz four-channel analog oscilloscope. Channels 1-2 are fully-functional, whereas 3-4 are limited in both deflection factor and coupling, as they are intended mainly for digital and trigger signals.

The 2245 includes features like AUTO SETUP which automatically adjusts vertical, horizontal, and triggering and display controls to provide a stable, triggered display of the waveform in seconds; Dual Time base with Delayed Sweep; Cursor Time/Voltage Measurements; On-Screen Scale Factor Readouts.

Key Specifications

Bandwidth 100 MHz
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%
Vertical Operating Modes CH1,2,3,4, CH2 Invert, Add, Alt, Chop (625 kHz)
Input Impedance 1 MΩ ±1.0% // 20 pF ±1 pF
Maximum Input Voltage 400 V (DC + peak AC) or 800 V (p-p ac at ≤ 10 kHz)
Sweep Speeds 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)
Trigger DC, Noise Reject, HF Reject, LF Reject, AC, TV Line, TV Field
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)
Trigger Source A & B Vert, CH1, 2, 3, 4, Line
Cursors Time, Volts
Interface Ext Counter/Timer Base Input connector; Ext Z-Axis Input connector
Probes Two P6109 100 MHz ×10 probes, BNC connector with a readout pin
Power 100 W max, 90 − 250 VAC, 48 − 445 Hz

Repair Information

Links

Backup Battery in Tek 2245A

Pictures