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{{TM500 | mfg=Tektronix | type=PG508 | function=50 MHz pulse generator | class=pulse generator | image=Tek PG508 front.jpg | introduced=1976 | discontinued=1993 | | {{TM500 | ||
manuals= | |mfg=Tektronix | ||
* [ | |type=PG508 | ||
|function=50 MHz pulse generator | |||
|class=pulse generator | |||
|image=Tek PG508 front.jpg | |||
|introduced=1976 | |||
|discontinued=1993 | |||
|designers=Fred Beckett;Dennis Feucht;Tom Hill;Gary Kersey | |||
|manuals= | |||
* [[Media:070-2044-00.pdf|PG508 Instruction Manual]] | |||
* [https://w140.com/tek_pg508_military_manual.pdf Tektronix PG508 Military Manual] | |||
}} | }} | ||
It was designed by [[Fred Beckett]], [[Dennis Feucht]], [[Tom Hill]], and [[Gary Kersey]]. | |||
Pulses can be triggered by an external input, a manual trigger button, or an internal period generator (optionally gated by the trigger input). | Pulses can be triggered by an external input, a manual trigger button, or an internal period generator (optionally gated by the trigger input). | ||
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==Rear Interface== | ==Rear Interface== | ||
(right-hand plug-in slot as viewed from front) | <small> | ||
(on right-hand plug-in slot as viewed from front) | |||
{| class="wikitable" | |||
|- | |||
! colspan="2" | Connector Pin | |||
! rowspan="2" | Description | |||
|- | |||
! Signal | |||
! Return | |||
|- | |||
| 27B || 28B || Trig output (complement polarity installed; for normal polarity, front panel input requires optional cable and front output disconnection) ''[note error on manual page 1-12; table 1-13 is correct]'' | |||
|- | |||
| 24B || 25B || Trig input (with optional cable, front panel input must be disconnected) | |||
|- | |||
| 25A || 26A || Amplitude Monitor (from output via 27 kΩ) | |||
|- | |||
| 22A || || External Low Level Control Input (requires internal jumper and trim) | |||
|- | |||
| 22B || || External High Level Control Input (requires internal jumper and trim) | |||
|} | |||
Custom connection solder pads are available on the left plug-in slot, which is otherwise used only for the associated pass transistors in the mainframe. | |||
</small> | |||
==References== | ==References== | ||
* Designs by the Masters – ±20 V, 5 ns, 50 Ω Amplifier (detailed discussion of the PG508 output stage). Horowitz & Hill, Art of Electronics | * Designs by the Masters – ±20 V, 5 ns, 50 Ω Amplifier (detailed discussion of the PG508 output stage). Horowitz & Hill, Art of Electronics − The x-Chapters, p.150+ | ||
* [[Don Hall]], [[Media:Tekscope_1976_V8_N1.pdf | ''A 50 MHz pulse generator with variable transition times''. Tekscope V.8 N.1 1976, p.13+]] | |||
==Links== | |||
* [https://www.youtube.com/watch?v=gtvP_a9PhG8 PG508 Repair and Calibration] by Zenwizard Studios @ YouTube | |||
{{Documents|Link=PG508}} | |||
==Prices== | |||
{| class="wikitable sortable" | |||
|- | |||
! Year | |||
! 1980 | |||
! 1984 | |||
|- | |||
! Catalog Price | |||
| align="right" | $1,400 | |||
| align="right" | $2,025 | |||
|- | |||
! In 2023 Dollars | |||
| align="right" | $5,200 | |||
| align="right" | $6,000 | |||
|} | |||
==Pictures== | ==Pictures== | ||
<gallery> | <gallery> | ||
Tek PG508 front.jpg | |||
Tek PG508 01.jpg | |||
Tek PG508 02.jpg | Output board (The black coax connection from the output stage to the left plug-in slot is non-standard.) | |||
Tek PG508 03.jpg | |||
Tek PG508 04.jpg | |||
Tek pg508.jpg | Tek pg508.jpg | ||
Tek pg508 on.jpg | Tek pg508 on.jpg | ||
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Tek pg508 rear.jpg | Tek pg508 rear.jpg | ||
</gallery> | </gallery> | ||
==Components== | |||
{{Parts|PG508}} | |||
[[Category:TM500 pulse generator plugins]] | [[Category:TM500 pulse generator plugins]] |