SG504: Difference between revisions
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{{TM500 | mfg=Tektronix | type=SG504 | function= | {{TM500 | mfg=Tektronix | type=SG504 | function=leveled sinewave generator | class=signal generator | image=Tek sg504 front 5.jpg | introduced=1974 | discontinued=1993 | | ||
manuals= | designers= |manuals= | ||
* [[Media:070-1632-01.pdf | Tektronix SG 504 Instruction Manual | * [[Media:070-1632-01.pdf | Tektronix SG 504 Instruction Manual 070-1632-01]] | ||
}} | }} | ||
{{BeginSpecs}} | {{BeginSpecs}} | ||
{{Spec | Frequency range | 50 kHz or 6 MHz (Ref), 245 MHz to 550 MHz (Lo), | {{Spec | Frequency range | 50 kHz or 6 MHz (Ref), 245 MHz to 550 MHz (Lo), 495 MHz to 1050 MHz (Hi) }} | ||
{{Spec | Output amplitude | 0.5 V<sub>p-p</sub> to at least 4 V<sub>p-p</sub>, flat to within ±4% }} | {{Spec | Output amplitude | 0.5 V<sub>p-p</sub> to at least 4 V<sub>p-p</sub>, flat to within ±4% }} | ||
{{Spec | Monitor output | 0.3 V<sub>p-p</sub> into 50 Ω }} | {{Spec | Monitor output | 0.3 V<sub>p-p</sub> into 50 Ω }} | ||
{{Spec | FM input | ±9 V into 50 kΩ (DC to 100 kHz) produces ±0.05% to ±0.4% deviation depending on frequency }} | |||
{{EndSpecs}} | {{EndSpecs}} | ||
| Line 20: | Line 20: | ||
compensated power meter with 50 Ω feed-thru. See the pictures for an example. | compensated power meter with 50 Ω feed-thru. See the pictures for an example. | ||
As of April 2016, [http://www.ebay.com/itm/131775163056 Ebay seller "ancelb" is selling SG504 leveling (output) heads] that are specified | As of April 2016, [http://www.ebay.com/itm/131775163056 Ebay seller "ancelb" is selling SG504 leveling (output) heads] | ||
to perform much better than the original Tektronix heads. See photo below. | that are specified to perform much better than the original Tektronix heads. See photo below. | ||
There is an open source project to replace the output head at [https://hackaday.io/project/18854-a-leveling-head-for-thetektronix-sg-504-sig-gen hackaday.io]. | There is an open source project to replace the output head at [https://hackaday.io/project/18854-a-leveling-head-for-thetektronix-sg-504-sig-gen hackaday.io]. | ||
==Prices== | |||
{| class="wikitable sortable" | |||
|- | |||
! Year | |||
! 1979 | |||
! 1980 | |||
|- | |||
! Catalog Price | |||
| align="right" | $2,295 | |||
| align="right" | $2,350 | |||
|- | |||
! In 2023 Dollars | |||
| align="right" | $9,700 | |||
| align="right" | $8,800 | |||
|} | |||
According to an [[Media:Tek Schottky Diodes Memo rot.pdf|internal memo]], annual sales were estimated at 350 units in 1979. | |||
==Links== | |||
{{Documents|Link=SG504}} | |||
==Pictures== | ==Pictures== | ||
| Line 31: | Line 52: | ||
Tek sg504 2.jpg | Tek sg504 2.jpg | ||
SG504.jpg |With output head (catalog picture) | SG504.jpg |With output head (catalog picture) | ||
SG504-B013377.jpg|Late Revision Front Panel with LED Frequency Readout | |||
Tek sw503 dc502 sg504 dc508a mr501 tm515.png|SG504 in [[TM515]] with other TM500 gear | |||
SG504_ServiceNote_Fig1.png|Service Note Fig.1 | |||
</gallery> | |||
'''Output Head''' | |||
<gallery> | |||
015-0282-00_1.jpg | |||
015-0282-00_2.jpg | |||
015-0282-00_3.jpg | |||
015-0282-00_4.jpg | |||
015-0282-00_5.jpg | |||
015-0282-00_6.jpg | |||
015-0282-00_7.jpg | |||
015-0282-00_8.jpg | |||
sg504-diy-head.JPG|Home-made output head | sg504-diy-head.JPG|Home-made output head | ||
Ancel sg504 head.jpg|SG504 head being produced and sold on Ebay by seller "ancelb" | Ancel sg504 head.jpg|SG504 head being produced and sold on Ebay by seller "ancelb" | ||
</gallery> | </gallery> | ||
Latest revision as of 01:25, 19 February 2024
The Tektronix SG504 is a leveled sinewave generator plug-in for the TM500 system.
Key Specifications
| Frequency range | 50 kHz or 6 MHz (Ref), 245 MHz to 550 MHz (Lo), 495 MHz to 1050 MHz (Hi) |
|---|---|
| Output amplitude | 0.5 Vp-p to at least 4 Vp-p, flat to within ±4% |
| Monitor output | 0.3 Vp-p into 50 Ω |
| FM input | ±9 V into 50 kΩ (DC to 100 kHz) produces ±0.05% to ±0.4% deviation depending on frequency |
Output Head
The SG504 is usually found on Ebay without the output head (015-0282-00). David Partridge did an excellent teardown and reverse engineering of the output head and sells kits to make new heads.
It's fairly easy to use that schematic to make a new level head that fits in a standard BNC Pomona box since its function is really just a 250 MHz to 1050 MHz temperature compensated power meter with 50 Ω feed-thru. See the pictures for an example.
As of April 2016, Ebay seller "ancelb" is selling SG504 leveling (output) heads that are specified to perform much better than the original Tektronix heads. See photo below.
There is an open source project to replace the output head at hackaday.io.
Prices
| Year | 1979 | 1980 |
|---|---|---|
| Catalog Price | $2,295 | $2,350 |
| In 2023 Dollars | $9,700 | $8,800 |
According to an internal memo, annual sales were estimated at 350 units in 1979.
Links
Documents Referencing SG504
Pictures
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With output head (catalog picture)
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Late Revision Front Panel with LED Frequency Readout
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SG504 in TM515 with other TM500 gear
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Service Note Fig.1
Output Head
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Home-made output head
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SG504 head being produced and sold on Ebay by seller "ancelb"
