7B70: Difference between revisions
No edit summary |
No edit summary |
||
Line 1: | Line 1: | ||
{{Plugin Sidebar | | {{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) | * [[Media:070-0982-00.pdf|Tektronix 7B70 Manual]] (OCR, PDF) | ||
<small> | <small> |
Revision as of 06:09, 9 August 2021
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The 7B71/7B70 were superseded by the 7B85/7B80 pair (400 MHz) in 1976.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
- Troubleshooting the 7B70 and 7B71 timebases. Tekscope Vol.6 No.4 Sept/Oct 1974
- Tek 7B70 @ barrytech.com
- Tek 7B70 @ amplifier.cd
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
-