2235
Tektronix 2235 100 MHz Dual-Channel Analog Oscilloscope with Delayed Sweep
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About the 2235
The Tektronix 2235 is a portable two-channel analog oscilloscope from Tektronix's 2200 series, built from 1984 to 1992, and was also supplied to the US military as the AN/USM-488.
Each channel covers 2 mV/div to 5 V/div with a bandwidth of at least 100 MHz (90 MHz at 2 mV/div) and a switchable 20 MHz limit. The A and B timebases run from 0.5 s/div to 50 ns/div, and a x10 magnifier extends this to 5 ns/div; the delayed (B) sweep is used for accurate relative-time measurements. It also offers X-Y mode, a trigger view function, external trigger and a rear Z-axis input.
The 80 x 100 mm CRT uses P31 phosphor at 14 kV. The instrument runs on 90-250 VAC, 48-440 Hz, draws at most 40 W and weighs 5.2 kg without cover and probes. Tektronix supplied it with two 10x passive probes; operator and service manuals (070-4207-00, 070-4206-00) remain available from the TekWiki archive.
Frequently asked questions
Is this an HP network card?
No. The item is a Tektronix 2235 100 MHz oscilloscope; the earlier HP/network-card text on this listing was wrong.
What probes does it need?
Any standard 10x passive oscilloscope probe with BNC connector rated for 100 MHz or more. Tektronix shipped the 2235 with two P6122 10x probes.
Is it a digital storage scope?
No. The 2235 is a real-time analog CRT oscilloscope with no waveform memory. Its sister model, the 2236, adds a built-in counter/timer/multimeter.
Where can I find the manuals?
Tektronix's operator manual (070-4207-00) and service manual (070-4206-00) are available as PDFs from the TekWiki archive linked on this page.
Documents
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2235 Oscilloscope operators manual 070-4207-00 (Tektronix)
Manual · English · w140.com
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2235 Oscilloscope service manual 070-4206-00 (Tektronix)
Manual · English · w140.com
Specifications
| CRT | 80 x 100 mm, P31 phosphor, 14 kV |
| Power | 90-250 VAC, 48-440 Hz, 40 W (70 VA) max |
| Weight | 5.2 kg without cover, probes and pouch |
| Channels | 2 |
| Rise time | 3.5 ns (5 mV/div and up); 3.9 ns at 2 mV/div |
| Sweep range | 0.5 s/div to 50 ns/div; 5 ns/div with x10 magnifier |
| Delayed sweep | Yes, A and B timebases |
| Bandwidth limit | 20 MHz |
| Input impedance | 1 MOhm +/-2%, 20 pF |
| Production years | 1984-1992 |
| Bandwidth ( 3 dB) | DC to 100 MHz (5 mV/div to 5 V/div); 90 MHz at 2 mV/div |
| Maximum safe input | 400 V (DC + peak AC) |
| Vertical sensitivity | 2 mV/div to 5 V/div, 1-2-5 sequence, +/-2% (15-35 C) |
| Height x width x depth | 137 x 327 x 440 mm (with feet and handle) |
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