465: Difference between revisions
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The 465 was very popular and Tek made them for quite a few years. | 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. | It is all solid-state except for the CRT. It was introduced in November 1972. | ||
[[Bill Turner|There was no 465A]] but a 465B (int. 1980) with the same base specs but improved performance. | [[Bill Turner|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 [[475]] is a 200 MHz sister model. See also [[465M]]. | ||
The optional [[DM44]] multimeter attaches to the top of the instrument. | The optional [[DM44]] multimeter attaches to the top of the instrument. | ||
[[Bill Turner]] worked as a calibration technician for the 465 oscilloscope group. | |||
{{BeginSpecs}} | {{BeginSpecs}} | ||
{{Spec | Bandwidth | DC to 100 MHz on CH1 & CH2 for | {{Spec | 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}} | ||
{{Spec | Rise time | 3.5 ns for 0°C to +40°C and 4.2 ns from +40°C to +55°C}}} | {{Spec | Rise time | 3.5 ns for 0°C to +40°C and 4.2 ns from +40°C to +55°C}}} | ||
{{Spec | Input Impedance | 1 MΩ ±2% // 20 pF }} | {{Spec | Input Impedance | 1 MΩ ±2% // 20 pF }} | ||
Line 56: | Line 55: | ||
{{Spec | CRT Phosphor| P31 }} | {{Spec | CRT Phosphor| P31 }} | ||
{{Spec | CRT Accelerating Potential | 18.5 kV }} | {{Spec | CRT Accelerating Potential | 18.5 kV }} | ||
{{Spec | Line Voltage | 110/115/120/220/240 V<sub>AC</sub> ±10%, selected via primary voltage selector and regulating | {{Spec | Line Voltage | 110/115/120/220/230/240 V<sub>AC</sub> ±10%, selected via primary voltage selector and regulating range selector assembly, 48 Hz to 440 Hz }} | ||
{{Spec | Power Consumption | 75 W @ 115 V<sub>AC</sub> / 60 Hz}} | {{Spec | Power Consumption | 75 W @ 115 V<sub>AC</sub> / 60 Hz}} | ||
{{EndSpecs}} | {{EndSpecs}} | ||
==Internals== | ==Internals== |
Revision as of 14:45, 15 December 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.
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