2245

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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.

Two channels are fully-functioned, and two are very limited, in both deflection factor and coupling.

Key Specifications

Bandwidth	100 MHz (90 MHz in 2 mV/Div range); switchable 20 MHz limit
Rise time	3.5 ns
Deflection	2 mV/Div to 5 V/Div, 1−2−5, ±2%, and variable 2.5:1 for channels 1 & 2
Deflection	0.1 V/Div and 0.5 V/Div for channels 3 & 4 (1 V/Div and 5 V/Div with ×10 probes)
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
Input impedance	1 MΩ // 20 pF
Trigger sensitivity	0.35 Div up to 25 MHz, 1 Div up to 150 MHz
CRT	80×100 mm² display area, P31 phosphor
Power	90−250 VAC, 48 to 445 Hz, 100 W
Size	164 mm × 362 mm × 445 mm (6.4" × 14.6" × 17.5")
Weight	7.9 kg (17.4 lb) without accessories
Features	Delayed timebase 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)

Repair Information

• 2245 Power Supply Repair Information

Pictures

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  2245A

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  2245A