2440: Difference between revisions
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* [https://w140.com/tek_2440.pdf Tektronix 2440 Service Manual (without schematics)] | * [https://w140.com/tek_2440.pdf Tektronix 2440 Service Manual (without schematics)] | ||
* [[Media:2430A-2432A-2440-catalog.pdf|2430A/2432A/2440 catalog page]] (OCR) | * [[Media:2430A-2432A-2440-catalog.pdf|2430A/2432A/2440 catalog page]] (OCR) | ||
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The '''Tektronix 2440''' is a two-channel 300 MHz, 500 MS/s digital sampling oscilloscope from the late 1980s. | The '''Tektronix 2440''' is a two-channel 300 MHz, 500 MS/s digital sampling oscilloscope from the late 1980s. | ||
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<blockquote> | <blockquote> | ||
'''WARNING:'''<br /> | '''WARNING:'''<br /> | ||
Operation of the 2440, 2432, 2432A, 2430, and | Operation of the 2440, 2439, 2432, 2432A, 2431L, 2430, 2430A and 2424L : A/D-converter and CCD hybrids may suffer irreparable damage within a few minutes if operated out of the metal enclosure without extra cooling. | ||
</blockquote> | </blockquote> | ||
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* 05 - Video Waveform Measurement System | * 05 - Video Waveform Measurement System | ||
* 11 - Two [[LEMO S-series connector|probe-power connectors]] on the rear panel | * 11 - Two [[LEMO S-series connector|probe-power connectors]] on the rear panel | ||
* 22 - Two addtional [[P6137]] probes included | |||
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{{EndSpecs}} | {{EndSpecs}} | ||
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==Links== | ==Links== | ||
* [https://hohlerde.org/rauch/en/elektronik/geraete/tek2440/ Tektronix 2440 internals & repair @ hohlerde.org] | * [https://hohlerde.org/rauch/en/elektronik/geraete/tek2440/ Tektronix 2440 internals & repair @ hohlerde.org] | ||
{{Documents|Link=2440}} | |||
{{PatentLinks|2440}} | |||
==Internals== | ==Internals== | ||
Latest revision as of 07:18, 21 September 2024
The Tektronix 2440 is a two-channel 300 MHz, 500 MS/s digital sampling oscilloscope from the late 1980s.
It uses CCDs (essentially, analog shift registers) to store input samples at high speed and a single 8 bit flash A/D converter to digitize the time-multiplexed CCD output signals at 4 MS/s.
WARNING:
Operation of the 2440, 2439, 2432, 2432A, 2431L, 2430, 2430A and 2424L : A/D-converter and CCD hybrids may suffer irreparable damage within a few minutes if operated out of the metal enclosure without extra cooling.
Key Specifications
| Bandwidth | 300 MHz (Limit: 20, 100, Full) |
|---|---|
| Rise time | 1.2 ns (Repeat on, 16×averaging) |
| Sampling rate | 500 MSa/s each channel with simultaneous acquisition |
| Sampling type | Real time: 100 ns/Div and slower, Equivalent time 50 ns/Div and faster |
| Single event bandwidth | 200 MHz |
| Deflection | 2 mV/div to 5 V/div in 1-2-5 sequence |
| Resolution | 8 bit |
| Record length | 1024 samples |
| Auto scale factor | On-Screen Readout indicates probe tip deflection factors for ×1, ×10, ×100 and ×1000 probes |
| Input impedance | 1 MΩ // 15 pF or 50Ω |
| Sweep speeds | 2 ns/div to 5 s/div in 1-2-5 sequence (Modes A, A Intensified and B) |
| Auto measure | Simultaneously measures up to four parameters on one or more displayed waveforms, updated at 3 Hz intervals or display a snapshot of 20 parameters of waveform target |
| Acquisition modes | Normal, Envelope (glitch capture), Average |
| Display modes | CH1, CH2, invert, add, multiply, X-Y |
| Cursors | Volts, Time, Volts At Time, 1/Time, Slope |
| Functions | A Mode - Auto Level, Auto/Roll, Normal and Single Seq; B Mode - Trigger After Delay, Runs After Delay, 1K Record Length and more |
| Interface | GPIB |
| Probes | Two passive P6137 400 MHz ×10 voltage probes, 1.3 m |
| Power | 90 to 132 VAC or 80 to 250 VAC, 48 to 440 Hz; 160 W |
| Features |
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| Options |
|
Links
Documents Referencing 2440
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Internals
The 2440 employs several processors − an MC68B09 main CPU controls the instrument, a custom 16-bit waveform processor performs signal computations, and an MC6805 microcontroller handles the front panel interface. The GPIB Interface is implemented with a TMS9914 controller.
The power supply consists of a buck-type pre-regulator followed by a push-pull inverter and linear post-regulators (except for the +5 V digital supply rail).
CRT is a 154-0850-01.
