465: Difference between revisions
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* [[Media:070-2038-00.pdf|465 + DM44 Operator]] (OCR PDF, 4M) | * [[Media:070-2038-00.pdf|465 + DM44 Operator]] (OCR PDF, 4M) / [[Media:Tektronix_070-2038-00_465_Oscilloscope_and_DM44_Digital_Multimeter_Operators_Instruction_Manual_First_Printing_July_1976.pdf | Alternate]] | ||
* [[Media:070-1330-00.pdf|465 Service, early version]] (OCR PDF, 53M) / [[Media:070-1330-00 (2).pdf|Alternate]] (OCR PDF, 3M) | |||
* [[Media:070-1330-00.pdf|465 Service]] (OCR PDF, | |||
* [[Media:070-1861-00.pdf|465 Service B250000+]] (OCR PDF, 44M) | * [[Media:070-1861-00.pdf|465 Service B250000+]] (OCR PDF, 44M) | ||
* [[Media:070-1861-00_C.pdf|465 Service B250000+]] (Color OCR PDF, 58M) | * [[Media:070-1861-00_C.pdf|465 Service B250000+]] (Color OCR PDF, 58M) | ||
Revision as of 14:06, 25 May 2021
Note: The Tektronix 465M scope has its own page.
The Tektronix 465 is a portable 100 MHz dual-trace oscilloscope with dual time-bases.
The 465 was very popular and Tek made them for quite a few years.
It is all solid-state except for the CRT. It was introduced in November 1972.
There was no 465A but a 465B (int. 1980) with the same base specs but improved performance. The 475 is a 200 MHz sister model. See also 465M.
The optional DM44 multimeter attaches to the top of the instrument.
Bill Turner worked as a calibration technician for the 465 oscilloscope group.
Key Specifications
}| Bandwidth | DC to 100 MHz on CH1 & CH2 for −15°C to +40°C and DC to 85 MHz from +40°C to +55°C |
|---|---|
| Rise time | 3.5 ns for 0°C to +40°C and 4.2 ns from +40°C to +55°C |
| Input Impedance | 1 MΩ ±2% // 20 pF |
| Input Voltage | max. 500 V DC (250 VDC when DC coupled) + Peak AC or 500 Vp-p AC at < 1 kHz |
| Trigger Coupling | DC, AC, LF Reject, HF Reject |
| Channel Isolation | 100:1 at 25 MHz |
| Z Axis Input | DC to 50 MHz; 5 Vp-p signal causes noticeable modulation at normal intensity |
| Output Signals | CH1 Vertical, A & B +Gate |
| Calibrator | ~1 kHz, 300 mV, square wave |
| CRT | 154-0676-10 tube, P31 phosphor, 18.5 kV acceleration, 8 cm × 10 cm graticule |
| Line Voltage | 110/115/120/220/230/240 VAC ±10%, selected via primary voltage selector and regulating range selector assembly, 48 Hz to 440 Hz |
| Power Consumption | 75 W @ 115 VAC / 60 Hz |
Internals
The 465 uses tunnel diodes with Tek part number 152-0125-00, which are equivalent to TD3A, and 155-0032-00 chips (their -01 grade) as trigger amplifiers.
Links
- Rajesh's Tek 465 Repair
- The New Look in Portables, in Tekscope Vol. 4 No. 5, 1972
- Jim Williams repairs Tom Osborne's Tektronix 465B oscilloscope (YouTube)
- Another successful 465 repair, shorted tantalum (YouTube)
- Repairing a 465 (power supply, z axis amplifier, vertical pre amplifier issues) - nice internal photos
- Tek 465 page @ amplifier.cd
- 465B differences
- Tek 465 "teardown"
- Replacing Electrolytic Filter Capacitors in a Tektronix 465
- Tektronix T4650 CRT
- Handle Replacement Modification Kit
Common Problems
- See 465/Repairs
