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485: Difference between revisions
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Team (ref. Tekscope 1972 V4 N2)
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(Team (ref. Tekscope 1972 V4 N2)) |
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{{Oscilloscope Sidebar |manufacturer=Tektronix |designers=Wink Gross;Gene Andrews;Glenn Bateman;Murlan Kaufman;John Addis;Dick Troberg;Bob White| | {{Oscilloscope Sidebar | ||
series=400-series scopes | | |manufacturer=Tektronix | ||
model=485| | |designers=Wink Gross;Gene Andrews;Glenn Bateman;Murlan Kaufman;John Addis;Dick Troberg;Bob White | ||
image=Tektronix 485 oscilloscope2.jpg| | |series=400-series scopes | ||
caption=Tektronix 485| | |model=485 | ||
introduced=1972 | | |image=Tektronix 485 oscilloscope2.jpg | ||
discontinued=1986 | | |caption=Tektronix 485 | ||
summary=350 MHz portable scope| | |introduced=1972 | ||
manuals= | |discontinued=1986 | ||
|summary=350 MHz portable scope | |||
|manuals= | |||
* [[Media:070-1193-00.pdf|Tektronix 485 Manual (PDF, OCR, bad-OCR)]] | |||
* [[Media:Tek-485 OCR.pdf|Tektronix 485 Manual (PDF), OCR]] | |||
* [http://bama.edebris.com/download/tek/485/tek-485.pdf Tektronix 485 Manual (PDF)] | * [http://bama.edebris.com/download/tek/485/tek-485.pdf Tektronix 485 Manual (PDF)] | ||
* [[Media:Tek 485 cal proc.pdf|Tektronix 485 Calibration Procedure (PDF)]] | * [[Media:Tek 485 cal proc.pdf|Tektronix 485 Calibration Procedure (PDF)]] | ||
}} | }} | ||
The '''Tektronix 485''' is a dual-trace, portable analog oscilloscope with a maximum | The '''Tektronix 485''' is a dual-trace, portable analog oscilloscope with a maximum | ||
bandwidth of 350 MHz, [[introduced in 1972|introduced in March of 1972]]. | bandwidth of 350 MHz, [[introduced in 1972|introduced in March of 1972]]. | ||
The impedance of the inputs can be set individually to 50 Ω or 1 MΩ. | The impedance of the inputs can be set individually to 50 Ω or 1 MΩ. | ||
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Variant 485-1 omits the "A EXT Trigger display", as does variant 485-2 which additionally only has 50 Ω inputs. | Variant 485-1 omits the "A EXT Trigger display", as does variant 485-2 which additionally only has 50 Ω inputs. | ||
[[John Addis]] was project leader for the vertical section, assisted by [[Wink Gross]]. | |||
[[Glenn Bateman]], [[Ron Peltola]] and [[Bob Firth]] designed the low- and high-impedance attenuators. | |||
[[Murlan Kaufman]] was project leader for the horizontal and logic systems and designed the trigger generator. | |||
[[Bob White]] designed the trigger amplifier and external trigger view circuits. | |||
[[Keith Taylor]] did the work on the fast sweeps, the horizontal and the Z-axis amplifiers. | |||
[[Dick Troberg]] designed the high efficiency power supply system. | |||
{{BeginSpecs}} | {{BeginSpecs}} | ||
{{Spec | Input Impedance | 50 Ω / 1 MΩ // 20 pF }} | {{Spec | Input Impedance | 50 Ω / 1 MΩ // 20 pF }} | ||
{{Spec | Rise time | {{Spec | Rise time | 1 ns (50 Ω) / 1.4 ns (1 MΩ) }} | ||
{{Spec | Bandwidth | {{Spec | Bandwidth | 350 MHz (50 Ω) / 250 MHz (1 MΩ) }} | ||
{{Spec | Deflection | 5 mV/div to 5 V/div in 1−2−5 sequence, 2% accuracy }} | {{Spec | Deflection | 5 mV/div to 5 V/div in 1−2−5 sequence, 2% accuracy }} | ||
{{Spec | Time Base | {{Spec | Time Base | 1 ns/div to 0.5 s/div in 1−2−5 sequence}} | ||
{{Spec | CRT | {{Spec | CRT | [[154-0652-00]] and [[154-0652-05]], 21 kV acceleration, 8 × 10 divisions (0.8 cm/div)}} | ||
{{Spec | Weight | 21.5 lb | {{Spec | Weight | 9.3 kg (21.5 lb) }} | ||
{{Spec | Power | AC | {{Spec | Power | AC 90–136 or 180–272 V, 48–440 Hz, 60 W @ 115V }} | ||
{{EndSpecs}} | {{EndSpecs}} | ||
==Links== | ==Links== | ||
* [ | * [[Gene Andrews]], ''A nanosecond portable oscilloscope''. In [[Media:Tekscope_1972_V4_N2_Mar_1972.pdf|Tekscope Vol.4 No.2, March 1972]], p.2+. | ||
* [https://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_other/485.html Tek 485 @ amplifier.cd] | |||
* [https://youtube.com/watch?v=7Qg6ory3L8Y 485 troubleshooting] @ YouTube | * [https://youtube.com/watch?v=7Qg6ory3L8Y 485 troubleshooting] @ YouTube | ||