2225

Manuals – Specifications – Links – Pictures

The Tektronix 2225 is a 50 MHz dual-channel analog scope.

It has a single timebase with a magnifier that allows displaying normal and magnified traces together on the screen, but has no delay feature, only an X position control.

The Y inputs feature a x10 magnifier that decreases bandwidth to 5 MHz but increases sensitivity to 0.5 mV/Div.

There is a 2225ST model that adds digital storage. Further information needed

The 1104A battery can be used to operate the 2225 without mains power.

Key Specifications

Rise time	≤7 ns (≤70 ns with ×10 vertical magnification)
Bandwidth	≥50 MHz (≥5 MHz with ×10 vertical magnification)
Deflection	5 mV/Div to 5 V/Div, 1–2–5; 500 μV/Div with ×10 vertical magnification; variable ≥2.5:1
Input impedance	1 MΩ // 25±2 pF
Maximum Safe Input	400 V (DC + peak AC) or 800 Vp-p AC to ≤10 kHz
Trigger sensitivity	0.3 Div or 40 mV @ 5 MHz, 1 Div or 200 mV @ 5 MHz
Sweep	0.5 s/Div to 50 ns/Div, 1−2−5; ×10 Mag. down to 5 ns/Div; variable ≥2.5 : 1
Z input	5 V causes noticeable modulation (positive decreases intensity), DC to 5 MHz; max. 400 V (DC + peak AC) or 800 Vp-p AC to ≤10 kHz
CRT	154-0907-00 tube, 80 × 100 mm² display, P31 phosphor, 12.6 kV acceleration
Power	95–128 or 185–250 VAC, 48–440 Hz, ≤70 W (80 VA)
Features	X-Y mode (± 3° from DC to 150 kHz) Calibrator (0.5 V ±5% into 1 MΩ Load; 1 kHz ±20%)

Prices

1990: $1,095 ($2,280 in 2021 dollars)

Links

• Tektronix 2225 Analog Oscilloscope - EEVblog 196
• Tektronix 2225 Oscilloscope Teardown and Calibration - EEVblog 208

Pictures

2225

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2225ST

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• 

CRTs used in the 2225

Page	Part nos	Description	Designers	Used in
154-0907-00	154-0907-00	CRT		2225 • 2225ST

Custom ICs used in the 2225

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