2225: Difference between revisions
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There is a '''2225ST''' model that adds digital storage. ''Further information needed'' | There is a '''2225ST''' model that adds digital storage. ''Further information needed'' | ||
A 2205 equipped with option 07 (internal DC inverter) can be powered ≥3 hours from an [[1104A]] battery. | |||
{{BeginSpecs}} | {{BeginSpecs}} | ||
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* X-Y mode (± 3° from DC to 150 kHz) | * X-Y mode (± 3° from DC to 150 kHz) | ||
* Calibrator (0.5 V ±5% into 1 MΩ Load; 1 kHz ±20%) | * Calibrator (0.5 V ±5% into 1 MΩ Load; 1 kHz ±20%) | ||
}} | |||
{{Spec | Options | (selected) | |||
* 1R – Rackmount kit | |||
* 07 – Internal DC Inverter (for 11.8–30 V<sub>DC</sub> supply) | |||
* 30 – Opt.07 + [[1104]] battery | |||
* 18 – [[P6122]] probes instead of standard [[P6103]] | |||
}} | }} | ||
{{EndSpecs}} | {{EndSpecs}} | ||
==Prices== | ==Prices== | ||
1990: $1,095 ($2,280 in 2021 dollars) | * 1990 catalog: $1,095 ($2,280 in 2021 dollars) | ||
* ''Wireless World'', May 1991: 2225, £400; 2225ST, £550 | |||
==Links== | ==Links== | ||
Revision as of 05:32, 22 April 2022
The Tektronix 2225 is a 50 MHz dual-channel analog scope.
It has a single timebase with a ×5/×10/×50 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 ×10 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
A 2205 equipped with option 07 (internal DC inverter) can be powered ≥3 hours from an 1104A battery.
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 |
|
| Options | (selected) |
Prices
- 1990 catalog: $1,095 ($2,280 in 2021 dollars)
- Wireless World, May 1991: 2225, £400; 2225ST, £550
Links
- Tektronix 2225 Analog Oscilloscope - EEVblog 196
- Tektronix 2225 Oscilloscope Teardown and Calibration - EEVblog 208
Internals
The 2225 power supply uses a 120-1630-00 mains-frequency toroidal transformer to produce a 60 V DC supply, followed by two TL494-driven switching regulators.
The scope uses transistor array ICs like the CA3102, CA3046 and CA3054, but no Tek custom ICs.
Pictures
2225
2225ST
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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