2465
The Tektronix 2465 is a four-channel 300 MHz portable oscilloscope from the penultimate generation of analog Tektronix scopes. The 2445 is a 150 MHz version. See 2465A and 2465B for the successor versions.
Wink Gross was the vertical system engineer for the 2465. He designed the 2465 main vertical amplifier, the channel switch, and the auxiliary input preamp. Marv LaVoie designed the 2465 attenuator. The horizontal amplifier in the 2465 was designed by Art Metz and Ken Schlotzhauer (trigger IC). Art Metz also worked on the triggers. He and Walt Ainsworth designed the sweeps. Mike Metcalf designed the 2465 Z axis IC, both under the direction of Art Metz. Art had horizontal system responsibility and designed the non-IC part of the horizontal as well.
Options
- Option 01 (DMM) added a 4½-digit, fully autoranging digital multimeter which measures DC and AC voltage and current, resistance, dBV, dBm, continuity, and temperature.
- Option 05 (TV) added TV (back-porch) clamp circuitry to the Channel 2 input and TV trigger coupling modes, allowing selection of either horizontal or vertical sync pulses to obtain horizontal-line-sync or field-sync pulse triggering.
- Option 06 (Counter/Timer/Trigger) allows precision time-interval measurement, event and frequency counting, delay-by-events triggering, and logic triggering.
- Option 09 added option 06, the CTT, plus a 17-bit P6407 word recognizer probe.
- Option 10 added a GPIB interface for remote control.
Key Specifications
| Bandwidth | 350 MHz (2445: 150 MHz) |
|---|---|
| Sweep | 5 ns/Div to 500 ms/Div, 1−2−5, and ×10 magnifier (fastest sweep 500 ps/Div) |
| Channels | Four independent channels |
| Deflection | 2 mV/div to 5 V/Div, 1−2−5 |
| Cursors | Delta Volts and Delta Time Cursors |
| CRT Readout | Scale Factors, Trigger Level, Voltage, Time, Frequency, Phase and Ratio Measurements and Mode Indicators |
| Trigger | Advanced Triggering with "Hands Off" Auto Level Triggering |
| Trigger Bandwidth | 500 MHz min. |
| Input Impedance | 50 Ω / 1 MΩ inputs with 50 Ω protection |
| CRT | 154-0850-01, +14/−1.9 kV |
| Probes | Two P6131 ×10 probes, 1.3 m |
See also
Links
- How to enter test mode
- 2465 series servicing @ hackaday.io
- Tektronix 2445 Oscilloscope Repair by NFM @ YouTube
Pictures
2445
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Prototype Knobless 2445 in VintageTEK Museum
2465
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CRTs used in the 2445
| Page | Part nos | Description | Designers | Used in |
|---|---|---|---|---|
| 154-0850-01 | 154-0850-00 • 154-0850-01 | CRT | 2424L • 2430 • 2430A • 2431L • 2432 • 2439 • 2440 • 2445 • 2465 • 2465A • 2465B |
CRTs used in the 2465
| Page | Part nos | Description | Designers | Used in |
|---|---|---|---|---|
| 154-0850-01 | 154-0850-00 • 154-0850-01 | CRT | 2424L • 2430 • 2430A • 2431L • 2432 • 2439 • 2440 • 2445 • 2465 • 2465A • 2465B |
Custom ICs used in the 2445