PG508: Difference between revisions
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==Rear Interface== | ==Rear Interface== | ||
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(on right-hand plug-in slot as viewed from front) | (on right-hand plug-in slot as viewed from front) | ||
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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. | 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> | |||
== | ==Links== | ||
* 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+ | * 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+ | ||
* [ | * [https://www.youtube.com/watch?v=gtvP_a9PhG8 PG508 Repair and Calibration] by Zenwizard Studios @ YouTube | ||
{{Documents|Link=PG508}} | |||
{{PatentLinks|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== | ||
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==Components== | ==Components== | ||
{{ | {{Parts|PG508}} | ||
[[Category:TM500 pulse generator plugins]] | [[Category:TM500 pulse generator plugins]] |
Latest revision as of 13:33, 21 September 2024
The Tektronix PG508 is a 50 MHz pulse generator plug-in for the TM500 system.
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). The trigger signal can be undelayed, delayed by a selectable time, or both (in which case double pulses are generated). The pulse duration, leading and trailing edge transition times, high- and low-level amplitude can be controlled independently.
Period, delay, duration, and transition time switches each feature a custom position where a user-supplied internal capacitor determines the timing.
Key Specifications
Period | external, or internal <20 ns to >200 ms in 7 decade steps plus variable; ≥200 ms possible in custom range |
---|---|
Jitter | <0.1% +50 ps |
Delay Time | <10 ns to >100 ms in 7 decade steps plus custom position and variable control; ≥100 ms possible in custom range |
Pulse Duration | square, or <10 ns to >100 ms in 7 decade steps plus custom position and variable control; ≥100 ms possible in custom range |
Transition time | Ranges 5 ns to 500 μs in decade steps plus custom position; separate ×1 to ×100 variable controls for leading and trailing edge (5 ns to 50 ms effective) |
Output level | High and low levels adjustable independently in −20 V to +20 V range, limited to max. 20 Vp-p / min. 1 Vp-p (open circuit), 50 Ω source impedance (−10 V to +10 V, 0.5 to 10 Vp-p into 50 Ω) |
Trigger/Gate input | Sensitivity 80 mVp-p to ≥10 MHz, 250 mVp-p to ≥50 MHz at 50 Ω impedance, max. ±5 Vpeak; 1 MΩ // 20 pF optionally selectable (internal switch), max. ±20 Vpeak |
Rear Interface
(on right-hand plug-in slot as viewed from front)
Connector Pin | 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.
Links
- 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+
- PG508 Repair and Calibration by Zenwizard Studios @ YouTube
Documents Referencing PG508
Patents that may apply to PG508
Page | Title | Inventors | Filing date | Grant date | Links |
---|---|---|---|---|---|
Patent US 3562464A | Cam actuated switch having movable and fixed contacts on circuit board | Howard Vollum • Willem H Verhoef • Tony Sprando | 1968-10-07 | 1971-02-09 | Cam switches • 2101 • 2701 • 2703 • 432 • 434 • 465 • 475 • 5A15N • 5A18N • 5A20N • 5A21N • 5A38 • 5A45 • 5B10N • 5B12N • 7A15 • 7A16A • 7A18 • 7A19 • 7A24 • 7A26 • 7B10 • 7B15 • 7B50 • 7B51 • 7B52 • 7B53A • 7B50A • 7B70 • 7B71 • 7B80 • 7B85 • 7B87 • 7B92 • 7B92A • 7D01 • 7D12 • 7D15 • 7J20 • 7S12 • 7T11 • 7T11A • AF501 • AM502 • AM503 • DC502 • DC503 • DC504 • DC505 • DM501 • DM502 • FG501 • FG501A • FG502 • FG503 • FG504 • FG507 • PG501 • PG502 • PG505 • PG506 • PG506A • PG508 • TG501 • SC502 • SC503 • SC504 |
Prices
Year | 1980 | 1984 |
---|---|---|
Catalog Price | $1,400 | $2,025 |
In 2023 Dollars | $5,200 | $6,000 |
Pictures
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Output board (The black coax connection from the output stage to the left plug-in slot is non-standard.)
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Components
Some Parts Used in the PG508
Part | Part Number(s) | Class | Description | Used in |
---|---|---|---|---|
155-0078-00 | 155-0078-xx • 155-0273-00 • 155-0274-00 | Monolithic integrated circuit | broadband amplifier | 464 • 465 • 466 • 468 • 475 • 475A • 475M • 485 • 7834 • 7844 • 7854 • 7904 • R7903 • R7912 • 7912AD • 7912HB • 7104 • 7A16A • 7A16P • 7A24 • 7A26 • 7A42 • 067-0587-01 • 067-0680-00 • AM503 • PG502 • PG508 • DC510 • DC5010 • FG5010 |