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 * [[Media:1947_Tektronix_Catalog.pdf|Tektronix 1947 "Catalog" (511 only)]]
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-The 511 was '''Tek's first oscilloscope''', [[introduced in 1947|introduced in June 1947]], but the second product (the first was the [[101|Type 101 Video Calibrator]]).  [[Howard Vollum]] was directly involved with the design of the 511. A revised version, the 511A, was [[introduced in 1948|introduced in November 1948]].
+The 511 was Tek's second product (first was the [[101|Type 101 Video Calibrator]]), and the company's '''first oscilloscope''', [[introduced in 1947|introduced in June 1947]].
+An improved version, the 511A, with a regulated CRT power supply (s.b.) was [[introduced in 1948|introduced in November 1948]].
+[[Howard Vollum]] was directly involved with the design of the 511.
+{{BeginSpecs}}
+{{Spec | Bandwidth  | 5 Hz to 10 MHz (8 MHz with 2-stage amplifier); no DC coupling }}
+{{Spec | Rise time  | 40 ns (50 ns with 2-stage amplifier) }}
+{{Spec | Deflection | Without amplifier, 27 V per cm maximum, 200 V/cm minimum, DC or peak to peak AC.  1-stage amplifier, 2.7 V/cm maximum, 40 V/cm minimum.  2-stage amplifier, 0.27 V/cm maximum, 4 V/cm minimum.  }}
+{{Spec | Input      | 1 MΩ // 40 pF; 600 V max. DC+peak AC }}
+{{Spec | Sweep      | 100 ns/cm to 10 ms/cm + variable; ×5 magnifier }}
+{{Spec | Trigger    | 0.5 to 50 V (Peak) sine or pulse ≥50 ns }}
+{{Spec | X input    | DC coupled via 100 K potentiometer and sweep amplifier; 1.5 V/cm or less; DC to 800 kHz }}
+{{Spec | CRT        | [[5CP]], 3 kV acceleration }}
+{{Spec | Calibrator | Clipped sine wave of power line frequency, ranges 0-0.3, 0-1, 0-3, 0-10, 0-30, 0-100 V<sub>p-p</sub> }}
+{{Spec | Outputs    | Sweep sawtooth, 20 V<sub>p-p</sub>; Positive and negative gate, 40 V<sub>p-p</sub> }}
+{{Spec | Weight     | 511 – 29 kg (65 lb); 511A – 23 kg (50 lb); }}
+{{Spec | Dimensions | 15½" high, 12½" wide, 21 ½" deep }}
+{{Spec | Power      | 511 – 180 W; 511A – 105-125 or 210-250 V, 50-60 Hz, 230 W }}
+{{EndSpecs}}
+(511A unless noted otherwise)
-==Specifications==
-The 511A does not have response down to DC − frequency range is specified as 10 Hz to 10 MHz.
 There is also a 511AD, where the "D" in the model number indicates that it has a L-C [[delay line]].
-The 511 weighs 65 pounds (29 kg) and consumes 180 W.
-The 511A weighs 50 pounds (23 kg) and consumes 230 W.
-[[Category:Specifications needed]] ''please add''
 ==Internals==