7B15: Difference between revisions

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{{Plugin Sidebar 2 |
{{Plugin Sidebar 2 |
title=Tektronix 7B15|
manufacturer=Tektronix | type=7B15|
summary=1 GHz Delaying Timebase|
summary=1 GHz Delaying Timebase|
image=7b15-front.jpg |  
image=7b15-front.jpg |  
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introduced=1978 |
introduced=1978 |
discontinued=1990 |
discontinued=1990 |
series=[[7000-series scopes]]|
series=7000-series scopes|
manuals=
manuals=
* [http://bama.edebris.com/download/tek/7b15/tek-7b15.pdf Tektronix 7B15 Manual (PDF)]
* [http://bama.edebris.com/download/tek/7b15/tek-7b15.pdf Tektronix 7B15 Manual (PDF)]
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}}
}}


The '''Tektronix 7B15''' is a 1 GHz delaying time base for [[7000-series scopes]], in particular, the 1 GHz [[7104]] (typically used with [[7A29]] vertical amplifiers and a [[7B10]] delayed time base).
The '''Tektronix 7B15''' is a 1 GHz delaying time base for [[7000-series scopes]], in particular, the 1 GHz [[7104]] (typically used with [[7A29]] vertical amplifiers and a [[7B10]] delayed time base).


The 7B15 provides digital readout of delay and delta times.  In effect, the 7B15/[[7B10]] pair are speed-improved versions of the [[7B85]]/[[7B80]].
The 7B15 provides digital readout of delay and delta times.  In effect, the 7B15/[[7B10]] pair are speed-improved versions of the [[7B85]]/[[7B80]].

Revision as of 03:44, 9 August 2021

Template:Plugin Sidebar 2

The Tektronix 7B15 is a 1 GHz delaying time base for 7000-series scopes, in particular, the 1 GHz 7104 (typically used with 7A29 vertical amplifiers and a 7B10 delayed time base).

The 7B15 provides digital readout of delay and delta times. In effect, the 7B15/7B10 pair are speed-improved versions of the 7B85/7B80.

Key Specifications

Sweep 200 ms/Div to 2 ns/Div in 1-2-5 sequence, ×10 magnifier down to 200 ps/Div, variable to ×2.5
Triggering to 1 GHz
Jitter less than 30 ps at 1 GHz
Features
  • Digital read-out of delay and delta times
  • Variable Trigger Holdoff
  • HF Sync mode

Internals

A ramp generator is started when the trigger signal arrives. The delayed sweep is started when a comparator detects that the ramp has reached a control voltage, set by the front panel knobs. The control voltage is therefore proportional to the amount of delay and is measured using a 155-0185-00 4-digit DVM circuit, then displayed on the oscilloscope readout. The display, scaled in seconds, provides the operator with a precise readout of the delay.

Other custom Tek ICs used: 155-0150-00 trigger detector, 155-0160-00 trigger amplifier.

The 7B15 uses the +50 V supply provided by the mainframe.

Pictures