Difference between revisions of "465"

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* [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]]
* [[T4650]]
==Common Problems==
* See [[465/Repairs]]

Revision as of 09:17, 12 July 2019

Tektronix 465
Portable 100 MHz dual-trace scope
Tektronix 465 front

Produced from 1972 to 1983






Manuals – Specifications – Links – Pictures

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.


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


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.


Common Problems