475: Difference between revisions
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{{Spec | Deflection | 2 mV/Div to 5 V/Div, 1-2-5 }} | {{Spec | Deflection | 2 mV/Div to 5 V/Div, 1-2-5 }} | ||
{{Spec | Cascaded mode | 400 μV/Div, 50 MHz with CH1 input connected to CH2 VERT SIG OUT }} | {{Spec | Cascaded mode | 400 μV/Div, 50 MHz with CH1 input connected to CH2 VERT SIG OUT }} | ||
{{Spec | Time base | | {{Spec | Time base | 10 ns/Div to 500 ms/Div, 1-2-5, and ×10 magnifier }} | ||
{{Spec | Input impedance | 1 MΩ // 20 pF }} | {{Spec | Input impedance | 1 MΩ // 20 pF }} | ||
{{Spec | Triggering | 0.3 Div (int) or 50 mV (ext) to 40 MHz, increasing to 1.5 Div/250 mV at 200 MHz; AC coupling >60 Hz; LF REJ >50 kHz, HF REJ <50 kHz }} | {{Spec | Triggering | 0.3 Div (int) or 50 mV (ext) to 40 MHz, increasing to 1.5 Div/250 mV at 200 MHz; AC coupling >60 Hz; LF REJ >50 kHz, HF REJ <50 kHz }} | ||
{{Spec | X bandwidth | 3 MHz }} | |||
{{Spec | Z axis input | 5 V<sub>p-p</sub>, 50 MHz }} | |||
{{Spec | Calibrator | 1 kHz, 30 mA / 300 mV square wave }} | |||
{{EndSpecs}} | {{EndSpecs}} | ||
Revision as of 01:13, 19 July 2017
The Tektronix 475 is a portable dual-trace oscilloscope with dual time-bases similar to the 465, but with 200 MHz bandwidth and a maximum vertical sensitivity of 2 mV/Div. It is all solid-state except for the CRT. It was introduced in November 1972.
A revised version, the 475A, has 250 MHz bandwidth and a maximum vertical sensitivity of 5 mV/Div. The 1106 is a battery pack for the 475.
The optional DM44 multimeter attaches to the top of the instrument.
Key Specifications
| Bandwidth | 200 MHz (475), AC cutoff 10 Hz, switchable BW limit 20 MHz |
|---|---|
| Rise time | 1.75 ns (475) |
| Deflection | 2 mV/Div to 5 V/Div, 1-2-5 |
| Cascaded mode | 400 μV/Div, 50 MHz with CH1 input connected to CH2 VERT SIG OUT |
| Time base | 10 ns/Div to 500 ms/Div, 1-2-5, and ×10 magnifier |
| Input impedance | 1 MΩ // 20 pF |
| Triggering | 0.3 Div (int) or 50 mV (ext) to 40 MHz, increasing to 1.5 Div/250 mV at 200 MHz; AC coupling >60 Hz; LF REJ >50 kHz, HF REJ <50 kHz |
| X bandwidth | 3 MHz |
| Z axis input | 5 Vp-p, 50 MHz |
| Calibrator | 1 kHz, 30 mA / 300 mV square wave |
Internals
The 475 uses a number of Tek-made integrated circuits, including the 155-0032-01 input preamplifier, 155-0085-00 input amplifier, 155-0078-00 vertical amplifier, 155-0091-00 channel switch, 155-0082-00 vertical output amplifier, and 155-0049-00 sweep control.
Links
- The New Look in Portables, in Tekscope Vol. 4 No. 5, 1972
- Tek 475 / Tek 475A @ amplifier.cd
- Tek 475A in operation @ YouTube
Pictures
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Tektronix 475A
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Tektronix 475A
