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{{Oscilloscope Sidebar|
{{Oscilloscope Sidebar |
title=Tektronix 2245|
title=Tektronix 2245 |
image=Tek2245.jpg|
summary=100 MHz portable 4-channel scope |
caption=Tektronix 2245A |
image=Tek2245.jpg |
introduced=1986 |
caption=Tektronix 2245 |
discontinued=1994 |
introduced=1988 |
summary=
discontinued=1995 |
100 MHz 4-channel portable scope|
manuals=
manuals=
<!-- * [[Media:Tek_2252_2247A_2245A_Specs.pdf|Tektronix 2245A/2247A/2252 Specifications (PDF)]] -->
<!-- * [[Media:Tek_2252_2247A_2245A_Specs.pdf|Tektronix 2245A/2247A/2252 Specifications (PDF)]] -->
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* [[Media:tek_2245_2246 specs.pdf|Tektronix 2245/2246 Specifications (PDF, OCR)]]
* [[Media:tek_2245_2246 specs.pdf|Tektronix 2245/2246 Specifications (PDF, OCR)]]
<!-- * [[Media:070-6558-01.pdf|Tektronix 2245A Operators Manual (PDF, OCR)]] -->
<!-- * [[Media:070-6558-01.pdf|Tektronix 2245A Operators Manual (PDF, OCR)]] -->
}}
}}
The '''Tektronix 2245''' is a 100 MHz four-channel analog oscilloscope.


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 '''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.


Two channels are fully-functioned, and two are very limited, in both deflection factor and coupling.  
The 2246 includes the same features of the 2245 plus STORE/RECALL SETUP up to different 20 front panel setups and can be arranged in sequence as required for specific applications.  There are Labeled Volts Cursors with Ground-Referenced Readings and On-Screen Readouts; Hands-Off Voltmeter Measurements of DC Volts, +Peak and -Peak Volts, and P-P Volts; SmartCursors Integrate Voltage, Time, Frequency, and Phase Measurements, and are available in ALT and B Horizontal Modes.


{{BeginSpecs}}
{{BeginSpecs}}
{{Spec | Bandwidth | 100 MHz (90 MHz in 2 mV/Div range); switchable 20 MHz limit }}
{{Spec | Bandwidth | 100 MHz }}
{{Spec | Rise time | 3.5 ns }}
{{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 | Deflection | 2 mV/Div to 5 V/Div, 1−2−5, ±2%, and variable 2.5:1 for channels 1 & 2 }}
{{Spec | Vertical Operating Modes | CH1,2,3,4, CH2 Invert, Add, Alt, Chop (625 kHz) }}
{{Spec | Deflection | 0.1 V/Div and 0.5 V/Div for channels 3 & 4 (1 V/Div and 5 V/Div with ×10 probes)}}
{{Spec | Input Impedance| 1 MΩ ±1.0% // 20 pF ±1 pF }}
{{Spec | Time base | 20 ns/Div to 500 ms/Div (B time base to 5 ms/Div), 1−2−5, ×10 magnifier for fastest deflection of 2 ns/Div  }}
{{Spec | Maximum Input Voltage| 400 V (DC + peak AC) or 800 V (p-p ac at ≤ 10 kHz) }}
{{Spec | Input impedance | 1 MΩ // 20 pF  }}
{{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 sensitivity | 0.35 Div up to 25 MHz, 1 Div up to 150 MHz  }}
{{Spec | Trigger| DC, Noise Reject, HF Reject, LF Reject, AC, TV Line, TV Field }}
{{Spec | CRT | 80×100 mm² display area, P31 phosphor }}
{{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 | Power | 90−250 V<sub>AC</sub>, 48 to 445 Hz, 100 W  }}
{{Spec | Trigger Source A & B| Vert, CH1, 2, 3, 4, Line }}
{{Spec | Size | 164 mm × 362 mm × 445 mm  (6.4" × 14.6" × 17.5") }}
{{Spec | Cursors| Time, Volts }}
{{Spec | Weight | 7.9 kg (17.4 lb) without accessories }}
{{Spec | Interface| Ext Counter/Timer Base Input connector; Ext Z-Axis Input connector }}
{{Spec | Features |
{{Spec | Probes| Two [[P6109]] 100 MHz ×10 probes, [[BNC connector]] with a [[readout pin]] }}
* Delayed timebase
{{Spec | Power| 100 W max, 90 − 250 V<sub>AC</sub>, 48 − 445 Hz }}
* Auto Set Up
* Readout of time base and deflection (including probe scaling)
* Time, frequency, or voltage measurement with cursors
* X−Y mode
* Z input
* Limited persistent configuration (in service menu)
* Diagnose, Self Cal Measurements, and Exercise (in service menu)
}}
{{EndSpecs}}
{{EndSpecs}}


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