2245: Difference between revisions

Latest revision as of 09:16, 5 June 2024

Tektronix 2245

100 MHz portable 4-channel scope

Produced from 1987 to 1995

Manuals

2245

2245A

alternate copies

ROM Images

File	Pos.	Checksum

2245A

A16U2408 160-5391-00
A16U2519 160-5063-09 / 160-5063-04 / 160-6500-02, 160-6500-00
A16U2400 160-3493-00 SC84477P PDIP28 (68HC705?)

(All manuals in PDF format unless noted otherwise)

Manuals – Specifications – Links – Pictures

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.

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.

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 modes	CH1,2,3,4, CH2 Invert, Add, Alt, Chop (625 kHz)
Input impedance	1 MΩ ±1.0% // 20 pF ±1 pF
Maximum input	400 V DC + peak AC, or 800 V_p-p at ≤ 10 kHz)
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)
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)
Cursors	Time, Volts
Interface	Ext Counter/Timer Base Input connector; Ext Z-Axis Input connector
CRT	Acceleration 16.4 (−2.7/+13.7) kV
Probes	Two P6109 100 MHz ×10 probes, BNC connector with a readout pin
Power	90 − 250 V_AC, 48 − 445 Hz; 100 W max.

Repair Information

2245 Power Supply Repair Information

Links

Backup Battery in Tek 2245A

Pictures

2245
2245A
2245A
2245A

Components

Some Parts Used in the 2245

Part	Part Number(s)	Class	Description	Used in
M377	165-2129-03 • 165-2089-06 • 155-2089-05	Monolithic integrated circuit	amplifier	11A16 • 11A32 • 11A33 • 11A34 • 11A52 • 2245 • 2245A • 2247 • 2247A • 2252 • TDS410 • TDS420 • TDS460 • TDS520D • TDS540D • TDS580D • TDS680C • TDS684C • TDS714L • TDS724D • TDS754D • TDS784D

Some Parts Used in the 2245A

Part	Part Number(s)	Class	Description	Used in
155-0322-00	155-0322-00	Monolithic integrated circuit	vertical output amplifier	2245A • 2246
156-2654-00	156-2654-00	Monolithic integrated circuit	ECL "fast logic"	2245A • 2246
156-2655-00	156-2655-00	Monolithic integrated circuit	"slow logic"	2245A • 2246
165-2232-01	165-2232-01	Hybrid integrated circuit	buffer amplifier	2245A
234-0203-20	234-0133-20 • 234-0203-20 • 234-0238-20	Monolithic integrated circuit	amplifier	2245A • 2246
234-0401-20	234-0401-20 • 234-0401-21	Monolithic integrated circuit	horizontal preamplifier	2245A • 2246
Intel 8086		Monolithic integrated circuit	16-bit microprocessor	1240 • 2220 • 2221 • 2230 • 2246 • 2232 • 2245A • 2782 • 4114 • 4115
M376-004	234-0204-20 • 234-0239-30 • 234-0239-31	Monolithic integrated circuit	trigger	2245A • 2246
M377	165-2129-03 • 165-2089-06 • 155-2089-05	Monolithic integrated circuit	amplifier	11A16 • 11A32 • 11A33 • 11A34 • 11A52 • 2245 • 2245A • 2247 • 2247A • 2252 • TDS410 • TDS420 • TDS460 • TDS520D • TDS540D • TDS580D • TDS680C • TDS684C • TDS714L • TDS724D • TDS754D • TDS784D
T4656	154-0905-00	CRT	CRT	2245A • 2246 • 2246A • 2247A

@@ Line 1: / Line 1: @@
-{{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
- 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         ]]
-* [[Media:2252_2247A_2245A_Specs.pdf|Tektronix 2245A/2247A/2252 Specifications (PDF, OCR)]]
+'''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).
-It is part of a nearly identical family consisting of the 2245, [[2246]], [[2247]], and [[2252]]. It's the base model of the family.
+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.
-Two channels are fully-functioned, and two are very limited, in both deflection factor and coupling.
+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.
 {{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 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 | 400 V DC + peak AC, or 800 V<sub>p-p</sub> at ≤ 10 kHz) }}
-{{Spec | Input impedance | 1 MΩ // 20 pF  }}
+{{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 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 | Cursors| Time, Volts }}
-{{Spec | Size | 164 mm × 362 mm × 445 mm  (6.4" × 14.6" × 17.5") }}
+{{Spec | Interface| Ext Counter/Timer Base Input connector; Ext Z-Axis Input connector }}
-{{Spec | Weight | 7.9 kg (17.4 lb) without accessories }}
+{{Spec | CRT | Acceleration 16.4 (−2.7/+13.7) kV }}
-{{Spec | Features |
+{{Spec | Probes| Two [[P6109]] 100 MHz ×10 probes, [[BNC connector]] with a [[readout pin]] }}
-* Delayed timebase
+{{Spec | Power| 90 − 250 V<sub>AC</sub>, 48 − 445 Hz; 100 W max. }}
-* Auto Set Up
-* Readout of time base and deflection (including probe scaling)
-* Time, frequency, or voltage measurement with cursors
-* X−Y mode
-* Z input
-* Self Cal Measurements (in service menu)
-}}
 {{EndSpecs}}
 ==Repair Information==
-* [[224x PSU Repairs|2245 Power Supply 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                     | 2245
-Tek2245.jpg
+US Tektronix 2245A FrontRAW.JPG | 2245A
-Tek 2245a square trace.jpg|2245A
+Tek 2245a 4trace.jpg            | 2245A
+Tek 2245a square trace.jpg      | 2245A
 </gallery>
+==Components==
+{{Parts|2245}}
+{{Parts|2245A}}
 [[Category:2246 series scopes]]
-[[Category:Specifications needed]]