7B50: Difference between revisions

Latest revision as of 07:29, 16 November 2023

Tektronix 7B50
100 MHz Timebase 7B50 front Compatible with 7000-series scopes Produced from 1969 to 1975 Manuals Tektronix 7B50 Manual (OCR) (All manuals in PDF format unless noted otherwise)

Manuals – Specifications – Links – Pictures

The Tektronix 7B50 is a timebase plug-in for 7000-series scopes, particularly the 7500 series, introduced in 1969. It is specified for triggering up to 100 MHz. Triggering uses tunnel diodes. The sweep is fully discrete, no ICs. It was replaced by the 7B50A in 1976.

The task of designing the 7B50 was inherited and completed by Murlan Kaufman.

Key Specifications

Sweep	5 s/Div to 50 ns/Div in 1−2−5 sequence, ×10 magnifier down to 5 ns/Div, variable down to 12.5 s/Div
Excluded portions of sweep	None in 7700-series, first 50 ns with magnifier
Trigger sensitivity	0.3 Div (int) or 150 mV (ext) up to 10 MHz, 1.5 Div or 750 mV from 10 MHz to 100 MHz
Trigger coupling	DC, AC (>16 Hz), AC HF REJ (16 Hz to 100 kHz), AC LF REJ (>75 kHz)
Trigger input	1 MΩ // 20 pF max. 500 V DC+peak AC
Jitter	less than 1 ns at 75 MHz
Trigger Modes	Peak-Peak Auto, Auto, Norm, Single Sweep
External horizontal amplifier	90 mV/Div or 900 mV/Div ranges, 10:1 variable

X-Y operation

The 7B50 has a dedicated switch to put it in "amplifier mode" for X-Y operation. In this mode, the Trigger Source switch controls the signal source – internal from a vertical plug-in via the trigger path, or external — and the Trigger Coupling switch controls AC vs. DC coupling. In amplifier mode, gain can be varied using an uncalibrated potentiometer.

Links

Documents Referencing 7B50

Document	Class	Title	Authors	Year	Links
Tekscope 1969 V1 N5 Oct 1969.pdf	Article	Introducing the New Generation		1969	7000-series scopes • 7504 • 7704 • 7A11 • 7A12 • 7A13 • 7A14 • 7A16 • 7A22 • 7S11 • 7M11 • 7B50 • 7B51 • 7B70 • 7B71 • 7T11 • R5030 • 7000 series readout system • Miniature relays • Cam switches • Industrial Design • T7500 • T7700 • P6052 • P6053 • C-50 • C-51 • 204-2
Tekscope 1969 V1 N6 Dec 1969.pdf	Article	A New Logic for Oscilloscope Displays		1969	7000-series scopes • 7A11 • 7A12 • 7A13 • 7A14 • 7A16 • 7A22 • 7B50 • 7B51 • 7B70 • 7B71 • 7S11 • 7T11 • 7504 • 7704

Pictures

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@@ Line 6: / Line 6: @@
 |caption=7B50 front
 |introduced=1969
-|discontinued=1988
+|discontinued=1975
 |series=7000-series scopes
 |designers=Murlan Kaufman
 |manuals=
-'''7B50'''
 * [[Media:070-0975-00.pdf|Tektronix 7B50 Manual]] (OCR)
-* [http://bama.edebris.com/download/tek/7b50/tek-7b50.pdf Tektronix 7B50 Manual @ BAMA] (PDF)
-'''7B50A'''
-* [[Media:070-1986-00.pdf|Tektronix 7B50A Manual]]
 }}
-The '''Tektronix 7B50''' is a timebase plug-in for [[7000-series scopes]], particularly the 7500 series.
+The '''Tektronix 7B50''' is a timebase plug-in for [[7000-series scopes]], particularly the 7500 series, [[introduced in 1969]].
 It is specified for triggering up to 100 MHz. Triggering uses [[tunnel diodes]].
-The sweep is fully discrete, no ICs.
+The sweep is fully discrete, no ICs.  It was replaced by the [[7B50A]] in 1976.
-There is a 7B50 and a 7B50A.
 The task of designing the 7B50 was inherited and completed by [[Murlan Kaufman]].
-{{MissingSpecs}}
+{{BeginSpecs}}
+{{Spec | Sweep | 5 s/Div to 50 ns/Div in 1−2−5 sequence, ×10 magnifier down to 5 ns/Div, variable down to 12.5 s/Div}}
+{{Spec | Excluded portions of sweep | None in 7700-series, first 50 ns with magnifier }}
+{{Spec | Trigger sensitivity | 0.3 Div (int) or 150 mV (ext) up to 10 MHz, 1.5 Div or 750 mV from 10 MHz to 100 MHz }}
+{{Spec | Trigger coupling | DC, AC (>16 Hz), AC HF REJ (16 Hz to 100 kHz), AC LF REJ (>75 kHz) }}
+{{Spec | Trigger input | 1 MΩ // 20 pF max. 500 V DC+peak AC }}
+{{Spec | Jitter | less than 1 ns at 75 MHz }}
+{{Spec | Trigger Modes | Peak-Peak Auto, Auto, Norm, Single Sweep}}
+{{Spec | External horizontal amplifier | 90 mV/Div or 900 mV/Div ranges, 10:1 variable}}
+{{EndSpecs}}
 ==X-Y operation==
 The 7B50 has a dedicated switch to put it in "amplifier mode" for X-Y operation.
 In this mode, the Trigger Source switch controls the signal source – internal from a vertical plug-in via the trigger path, or external — and the Trigger Coupling switch controls AC vs. DC coupling.
 In amplifier mode, gain can be varied using an uncalibrated potentiometer.
+==Links==
+{{Documents|Link=7B50}}
 ==Pictures==
 <gallery>
 Tek 7b50.jpg|7B50
-Tek 7b50a.jpg|7B50A
-Tek 7b50a front2.jpg|7B50A
-Tek 7b50a bottom2.jpg|7B50A bottom
-Tek 7b50a rear2.jpg|7B50A rear
-Tek 7b50a top2.jpg|7B50A top
-Tek 7a17 7a18 7b50a model3 cart.jpg
 Tek 7b50 front close.jpg|7B50
 Tek 7b50 34 close.jpg|7B50
 </gallery>
-{{Custom ICs|7B50}}
-{{Custom ICs|7B50A}}
 [[Category:7000 series horizontal plugins]]