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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 070-1632-01]] | ||
}} | }} | ||
{{BeginSpecs}} | |||
{{ | {{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 | 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}} | |||
==Output Head== | ==Output Head== | ||
The SG504 is usually found on Ebay without the 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 | David Partridge did an excellent teardown and reverse engineering of the output head and sells | ||
[http://www.perdrix.co.uk/SG504Head/ kits to make new heads]. | [http://www.perdrix.co.uk/SG504Head/ kits to make new heads]. | ||
It's fairly easy to use that schematic to make a new level head that fits in a standard | It's fairly easy to use that schematic to make a new level head that fits in a standard | ||
BNC Pomona box since | 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. | 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]. | |||
==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== | ||
<gallery> | <gallery> | ||
Tek sg504 front 5.jpg | |||
Tek sg504 1.jpg | |||
Tek sg504 2.jpg | |||
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 | |||
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> | ||