7B70: Difference between revisions

Revision as of 06:09, 9 August 2021

Tektronix 7B70
200 MHz Timebase Tektronix 7B70 Compatible with 7000-series scopes Produced from 1969 to 1975 Manuals Tektronix 7B70 Manual (OCR, PDF) Alternate Copy (PDF) (All manuals in PDF format unless noted otherwise)

Manuals – Specifications – Links – Pictures

The Tektronix 7B70 is a 200 MHz time-base plug-in for 7000-series scopes. It has no delay function.

For delayed-sweep applications, the 7B70 is operated in conjunction with the model 7B71 delaying timebase. The 7B70/7B71 were primarily intended for the 7704 mainframe.

The task of designing the 7B70 was inherited and completed by Murlan Kaufman.

The 7B71/7B70 were superseded by the 7B85/7B80 pair (400 MHz) in 1976.

Key Specifications

Sweep rate	2 ns/div to 5 s/div, optional ×10 magnifier
Trigger modes	P-P auto, auto, norm, single

X-Y operation

The 7B70 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

Internals

The 7B70 contains five 148-0034-00 miniature relays and one 148-0035-00. It also contains one 152-0154-00 and two 152-0125-00 tunnel diodes.

Pictures

7B70, front panel
7B70, left side
7B70, right side

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 {{Plugin Sidebar |
-manufacturer=Tektronix | type=7B70|
+|manufacturer=Tektronix
-summary=200 MHz Timebase |
+|type=7B70
-image=Tek-7b70-front.jpg |
+|summary=200 MHz Timebase
-caption=Tektronix 7B70|
+|image=Tek-7b70-front.jpg
-introduced=1969|
+|caption=Tektronix 7B70
-discontinued=1975|
+|introduced=1969
-series=7000-series scopes|
+|discontinued=1975
-manuals=
+|designers=Murlan Kaufman
+|series=7000-series scopes
+|manuals=
 * [[Media:070-0982-00.pdf|Tektronix 7B70 Manual]] (OCR, PDF)
 <small>