465: Difference between revisions
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{{Spec | Bandwidth | DC to 100 MHz on CH1 & CH2 for -15°C to +40°C and DC to 85MHz from +40°C to +55°C}} | {{Spec | Bandwidth | DC to 100 MHz on CH1 & CH2 for -15°C to +40°C and DC to 85MHz from +40°C to +55°C}} | ||
{{Spec | Rise time | 3.5 ns | {{Spec | Rise time | 3.5 ns for 0°C to +40°C and 4.2ns from +40°C to +55°C}}} | ||
{{Spec | Vertical Input Resistance/Capacitance | 1MΩohm ±2%, Paralleled by 20pf }} | {{Spec | Vertical Input Resistance/Capacitance | 1MΩohm ±2%, Paralleled by 20pf }} | ||
{{Spec | Maximum Input Voltage - AC Coupled | 500V DC + Peak AC or 500V<sub>p-p</sub> AC at < 1kHz }} | {{Spec | Maximum Input Voltage - AC Coupled | 500V DC + Peak AC or 500V<sub>p-p</sub> AC at < 1kHz }} | ||
Revision as of 10:01, 29 July 2018
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.
Bill Turner worked as a calibration technician for the 465 oscilloscope group.
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.
The optional DM44 multimeter attaches to the top of the instrument.
See also 465M.
Key Specifications
}| Bandwidth | DC to 100 MHz on CH1 & CH2 for -15°C to +40°C and DC to 85MHz from +40°C to +55°C |
|---|---|
| Rise time | 3.5 ns for 0°C to +40°C and 4.2ns from +40°C to +55°C |
| Vertical Input Resistance/Capacitance | 1MΩohm ±2%, Paralleled by 20pf |
| Maximum Input Voltage - AC Coupled | 500V DC + Peak AC or 500Vp-p AC at < 1kHz |
| Maximum Input Voltage - DC Coupled | 250V DC+ Peak AC or 500Vp-p AC at < 1kHz |
| Trigger Coupling Modes | DC, AC, LF Reject, HF Reject |
| Channel Isolation | 100:1 at 25Mhz |
| Z Axis Input | 5v p-p Signal causes noticeable modulation at normal intensity |
| Z Axis Frequency response | DC to 50Mhz |
| Output Signals | CH1 Vertical, A & B +Gate |
| Calibrator Output | ~1kHz, 300mV, Square Wave |
| CRT Graticule Area | 8cm X 10cm |
| CRT Phosphor | P31 |
| CRT Accelerating Potential | 18.5kV |
| Line Voltage | 110/115/120/220/240 VAC ±10%,selected via primary voltage selector and regulating Range range selector assembly, 48 Hz to 440 Hz. |
| Power Consumption | 75 W @115 VAC/60Hz |
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"
