465: Difference between revisions
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* [http://dangerousprototypes.com/2012/03/19/tektronix-465-oscilloscope-teardown/ Tek 465 "teardown"] | * [http://dangerousprototypes.com/2012/03/19/tektronix-465-oscilloscope-teardown/ Tek 465 "teardown"] | ||
* [https://groups.io/g/TekScopes/files/Replacing%20Electrolytic%20Filter%20Capacitors%20in%20a%20Tektronix%20465.pdf Replacing Electrolytic Filter Capacitors in a Tektronix 465] | * [https://groups.io/g/TekScopes/files/Replacing%20Electrolytic%20Filter%20Capacitors%20in%20a%20Tektronix%20465.pdf Replacing Electrolytic Filter Capacitors in a Tektronix 465] | ||
* [[T4650]] | |||
==Pictures== | ==Pictures== | ||
Revision as of 15:59, 5 April 2019
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 |
| Maximum Input Voltage | 500 V DC (250 VDC when DC coupled) + Peak AC or 500 Vp-p AC at < 1 kHz |
| Trigger Coupling Modes | DC, AC, LF Reject, HF Reject |
| Channel Isolation | 100:1 at 25 MHz |
| Z Axis Input | 5 Vp-p signal causes noticeable modulation at normal intensity |
| Z Axis Frequency response | DC to 50 MHz |
| Output Signals | CH1 Vertical, A & B +Gate |
| Calibrator Output | ~1 kHz, 300 mV, square wave |
| CRT Graticule Area | 8 cm × 10 cm |
| CRT Phosphor | P31 |
| CRT Accelerating Potential | 18.5 kV |
| 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. The CRT is part number 154-0676-10.
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
- T4650
