2245

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Tektronix 2245
100 MHz portable 4-channel scope
Tektronix 2245A

Produced from 1987 to 1995

Manuals
ROM Images
File Pos. Checksum

2245A

(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, 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 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 Vp-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 VAC, 48 − 445 Hz; 100 W max.

Repair Information

Links

Backup Battery in Tek 2245A

Pictures

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 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