SG504: Difference between revisions

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(link to hackaday output head.)
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{{TM500 | mfg=Tektronix | type=SG504 | function=levelled sinewave generator | class=signal generator | image=Tek sg504 front 5.jpg | introduced=1974 | discontinued=1993 |
{{TM500 | mfg=Tektronix | type=SG504 | function=levelled sinewave generator | class=signal generator | image=Tek sg504 front 5.jpg | introduced=1974 | discontinued=1993 |
manuals=
manuals=
* [http://www.bitsavers.org/pdf/tektronix/tm500/070-1632-01_SG504_Aug81.pdf Tektronix SG 504 Manual (PDF)]
* [[Media:070-1632-01.pdf | Tektronix SG 504 Instruction Manual (PDF), 18MB]]
}}
}}


{{MissingSpecs}}
{{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 it's function is really just a 250 MHz to 1050 MHz temperature
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.


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to perform much better than the original Tektronix heads.  See photo below.
to perform much better than the original Tektronix heads.  See photo below.


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].


==Pictures==
==Pictures==
<gallery>
<gallery>
File:Tek sg504 front 5.jpg
Tek sg504 front 5.jpg
File:Tek sg504 1.jpg
Tek sg504 1.jpg
File:Tek sg504 2.jpg
Tek sg504 2.jpg
File:SG504.jpg |With output head (catalog picture)
SG504.jpg |With output head (catalog picture)
File:sg504-diy-head.JPG|Homemade output head
sg504-diy-head.JPG|Home-made output head
File:SG504-B013377.jpg|Late Revision Front Panel with LED Frequency Readout
SG504-B013377.jpg|Late Revision Front Panel with LED Frequency Readout
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"
Tek sw503 dc502 sg504 dc508a mr501 tm515.png|SG504 in [[TM515]] with other TM500 gear
</gallery>
</gallery>

Revision as of 17:12, 22 September 2018

Tektronix SG504
levelled sinewave generator
Tektronix SG504

Produced from 1974 to 1993

Manuals
(All manuals in PDF format unless noted otherwise)
Manuals – Specifications – Links – Pictures

The Tektronix SG504 is a levelled 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.

Pictures