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7D14: Difference between revisions
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summary=525 MHz frequency counter| | summary=525 MHz frequency counter| | ||
image=7d14-front.jpg | | image=7d14-front.jpg | | ||
caption=7D14 front view | caption=7D14 front view | | ||
introduced=1971 | | introduced=1971 | | ||
discontinued=1980 | | discontinued=1980 | | ||
series=[[7000-series scopes]]| | series=[[7000-series scopes]]| | ||
manuals= | manuals= | ||
* [ | * [[Media:070-1097-00.pdf|Tektronix 7D14 Service]] (OCR, PDF) | ||
* [[Media:7000 Series Digital Plug-In Applications.pdf|7000 Series Digital Plug-In Applications (PDF)]] | |||
}} | }} | ||
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In a vertical compartment, the trigger signal (i.e. the "shaped" input) can be displayed as the module's Y output. | In a vertical compartment, the trigger signal (i.e. the "shaped" input) can be displayed as the module's Y output. | ||
{{BeginSpecs}} | {{BeginSpecs}} | ||
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A differential FET buffer + bipolar amplifier stage drives a counter gate that uses a 10 mA [[tunnel diode]] as the switching element. | A differential FET buffer + bipolar amplifier stage drives a counter gate that uses a 10 mA [[tunnel diode]] as the switching element. | ||
The first decade is implemented as a divide-by-2 ECL flip-flop followed by a 5-stage ring counter made with discrete transistor pairs (note circular layout) and some logic to BCD-encode the count result. | The first decade is implemented as a divide-by-2 ECL flip-flop ([[156-0377-00]]) followed by a 5-stage ring counter made with discrete transistor pairs (note circular layout) and some logic to BCD-encode the count result. | ||
The following seven counter stages are conventional TTL decade ripple counters (N8292A). | The following seven counter stages are conventional TTL decade ripple counters (N8292A). | ||
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==Links== | ==Links== | ||
* [http://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_7000_series_special/7D14.htm 7D14 page @ amplifier.cd] | * [http://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_7000_series_special/7D14.htm 7D14 page @ amplifier.cd] | ||
* [http://www.barrytech.com/tektronix/tek7000/tek7d14.html 7D14 page @ barrytech.com] | |||
==Prices== | |||
{| class="wikitable" | |||
|- | |||
!Year | |||
! 1973 | |||
! 1976 | |||
! 1980 | |||
|- | |||
!Price | |||
| align="right" | $1,400 | |||
| align="right" | $1,550 | |||
| align="right" | $2,075 | |||
|- | |||
!2015 value | |||
| align="right" | $7,450 | |||
| align="right" | $6,430 | |||
| align="right" | $5,950 | |||
|- | |||
|} | |||
==Pictures== | ==Pictures== | ||
<gallery> | <gallery> | ||
File:7d14-front.jpg | 7D14 front panel | File:7d14-front.jpg | 7D14 front panel. The unit pictured was able to count up to 640 MHz on the external input and 532 MHz on the trigger path (7A19 in 7904). | ||
File:7d14-left.jpg | 7D14 left side | File:7d14-left.jpg | 7D14 left side | ||
File:7d14-right.jpg | 7D14 right side | File:7d14-right.jpg | 7D14 right side | ||
File:7d14-input-amp.jpg | 7D14 detail - input amplifier | File:7d14-input-amp.jpg | 7D14 detail - input amplifier | ||
File:7d14-gate.jpg | 7D14 detail - counter gate | File:7d14-gate.jpg | 7D14 detail - counter gate | ||
File:7d14-div2.jpg | 7D14 detail - 525 MHz divide-by-2 stage | File:7d14-div2.jpg | 7D14 detail - 525 MHz divide-by-2 stage | ||