2245: Difference between revisions

Revision as of 01:25, 10 April 2022

Tektronix 2245

100 MHz portable 4-channel scope

Produced from 1987 to 1995

Manuals

2245

2245 Operators manual
2245/2246 Specifications (OCR)

2245A

2245A Operators manual
2245A Service Manual 070-6557-00 (124MB)
2245A Service Manual 070-7672-00, SN B016000-up (OCR)
2245A/2247A/2252 Specifications (OCR)

alternate copies

(All manuals in PDF format unless noted otherwise)

Manuals – Specifications – Links – Pictures

The Tektronix 2245 is a 100 MHz four-channel analog oscilloscope. 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, and 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 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	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
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

2245A
2245A

CRTs used in the 2245

No results

CRTs used in the 2245A

Page	Part nos	Description	Designers	Used in
T4656	154-0905-00	CRT		2245A • 2246 • 2246A • 2247A

Custom ICs used in the 2245

Page	Model	Part nos	Description	Designers	Used in
M377	M377	165-2129-03 • 165-2089-06 • 155-2089-05	amplifier	John Addis	11A16 • 11A32 • 11A33 • 11A34 • 11A52 • 2245 • 2245A • 2247 • 2247A • 2252 • TDS410 • TDS420 • TDS460 • TDS520D • TDS540D • TDS580D • TDS680C • TDS684C • TDS714L • TDS724D • TDS754D • TDS784D

Custom ICs used in the 2245A

Page	Model	Part nos	Description	Designers	Used in
155-0322-00	M429	155-0322-00	vertical output amplifier		2245A • 2246
156-2654-00	156-2654-00	156-2654-00	ECL "fast logic"		2245A • 2246
156-2655-00	156-2655-00	156-2655-00	"slow logic"		2245A • 2246
165-2232-01	165-2232-01	165-2232-01	buffer amplifier		2245A
234-0203-20	M376-003	234-0133-20 • 234-0203-20 • 234-0238-20	amplifier		2245A • 2246
234-0401-20	234-0401-20	234-0401-20 • 234-0401-21	horizontal preamplifier		2245A • 2246
M376-004	M376-004	234-0204-20 • 234-0239-30 • 234-0239-31	trigger		2245A • 2246
M377	M377	165-2129-03 • 165-2089-06 • 155-2089-05	amplifier	John Addis	11A16 • 11A32 • 11A33 • 11A34 • 11A52 • 2245 • 2245A • 2247 • 2247A • 2252 • TDS410 • TDS420 • TDS460 • TDS520D • TDS540D • TDS580D • TDS680C • TDS684C • TDS714L • TDS724D • TDS754D • TDS784D

@@ Line 26: / Line 26: @@
 }}
 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.
+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, 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.
+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. 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 }}
-{{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| 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 | 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) }}