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7D15: Difference between revisions
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{{Plugin Sidebar | {{Plugin Sidebar | ||
|manufacturer=Tektronix | |||
summary=225 MHz | |series=7000-series scopes | ||
image=Tek-7d15-front.jpg | | |type=7D15 | ||
caption=Tektronix 7D15 | | |summary=225 MHz frequency counter | ||
introduced=1972 | | |image=Tek-7d15-front.jpg | ||
discontinued=1990 | | |caption=Tektronix 7D15 | ||
|introduced=1972 | |||
manuals= | |discontinued=1990 | ||
* [ | |designers=Art Metz;Roger McCoy; | ||
* [[Media:7000 Series Digital Plug-In Applications.pdf|7000 Series Digital Plug-In Applications | |manuals= | ||
* [[Media:070-1433-00.pdf|Tektronix 7D15 Instruction Manual]] (OCR) | |||
* [[Media:7000 Series Digital Plug-In Applications.pdf|7000 Series Digital Plug-In Applications]] | |||
}} | }} | ||
The '''Tektronix 7D15''' is a 225 MHz frequency counter plug-in for [[7000-series scopes]], [[introduced in 1972|introduced in November 1972]]. | |||
The | The 7D15 is optimized for timing measurements, having a 100 MHz oscillator and interval measurement averaging capability. It has two inputs and can measure frequency, period or time difference. | ||
The front panel uses [[SMB connector]]s for arming, clock in/out and reset signals. The arming input for channel A is active-high whereas that for channel B is active-low. When one or both are connected to the scope's delayed gate output, the delayed timebase can be used to select the part of the signal to be counted, e.g. for burst or A-B interval measurements. With this connection, the arming interval is directly visible as the intensified trace in the "A intensified by B" display mode. | The front panel uses [[SMB connector]]s for arming, clock in/out and reset signals. The arming input for channel A is active-high whereas that for channel B is active-low. When one or both are connected to the scope's delayed gate output, the delayed timebase can be used to select the part of the signal to be counted, e.g. for burst or A-B interval measurements. With this connection, the arming interval is directly visible as the intensified trace in the "A intensified by B" display mode. | ||
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{{EndSpecs}} | {{EndSpecs}} | ||
==Links== | |||
* [https://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_7000_series_special/counter_7D15.htm Tek 7D15 page @ amplifier.cd] | |||
* [http://www.barrytech.com/tektronix/tek7000/tek7d15.html Tek 7D15 page @ barrytech.com] | |||
* [https://www.youtube.com/watch?v=K6NqQur7iHU Tektronix 7D15 Repair and alignment] by Zenwizard Studios @ YouTube | |||
{{Documents|Link=7D15}} | |||
==Internals== | ==Internals== | ||
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The 5 MHz signal from the (non-ovenized) internal reference crystal oscillator is divided down to a 1 MHz master clock. Optionally, the 1 MHz can be supplied externally as well. An internal VCO, phase-locked to the 1 MHz master, produces a 100 MHz input to the counter chain for timing measurements. | The 5 MHz signal from the (non-ovenized) internal reference crystal oscillator is divided down to a 1 MHz master clock. Optionally, the 1 MHz can be supplied externally as well. An internal VCO, phase-locked to the 1 MHz master, produces a 100 MHz input to the counter chain for timing measurements. | ||
==Prices== | ==Prices== | ||
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! 1990 | ! 1990 | ||
|- | |- | ||
!Price | !Catalog Price | ||
| align="right" | $1,475 | | align="right" | $1,475 | ||
| align="right" | $1,600 | | align="right" | $1,600 | ||
| Line 73: | Line 73: | ||
| align="right" | $4,400 | | align="right" | $4,400 | ||
|- | |- | ||
! | !In 2023 dollars | ||
| align="right" | $ | | align="right" | $10,000 | ||
| align="right" | $ | | align="right" | $8,500 | ||
| align="right" | $ | | align="right" | $8,100 | ||
| align="right" | $ | | align="right" | $9,300 | ||
| align="right" | $ | | align="right" | $10,200 | ||
|- | |- | ||
|} | |} | ||
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Tek 7d15 on.jpg|7D15 powered on | Tek 7d15 on.jpg|7D15 powered on | ||
Tek 7d15 front low.jpg | Tek 7d15 front low.jpg | ||
Tek 7844 with 7d15.JPG | |||
</gallery> | </gallery> | ||
==Components== | |||
{{Parts|7D15}} | |||
[[Category:7000 series special-function plugins]] | [[Category:7000 series special-function plugins]] | ||
[[Category:Frequency counters]] | [[Category:Frequency counters]] | ||