SG505: Difference between revisions

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SG505 (view source)

Revision as of 03:59, 1 October 2021

28 bytes removed ,  1 October 2021
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* [[Media:Tek sc505 eis no ocr.pdf|Tektronix SG 505 Engineering Instrument Specification (PDF)]]
* [[Media:Tek sc505 eis no ocr.pdf|Tektronix SG 505 Engineering Instrument Specification (PDF)]]
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Option 01 adds an intermodulation test signal function.<br>
Option 01 adds an intermodulation test signal function.<br>
Option 02 adds a fully balanced output to +28 dBm and selectable source impedance with corresponding changes to the front panel connections. It also includes Option 01.
Option 02 adds a fully balanced output to +28 dBm and selectable source impedance with corresponding changes to the front panel connections. It also includes Option 01.
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{{BeginSpecs}}
{{BeginSpecs}}
{{Spec | Frequency range | 10 Hz to 100 kHz nom. (typ. 9 Hz to 110 kHz) in four overlapping ranges }}
{{Spec | Frequency range | 10 Hz to 100 kHz nom. (typ. 9 Hz to 110 kHz) in four overlapping ranges }}
{{Spec | Frequency accuracy | 3% of dial reading }}
{{Spec | Frequency accuracy | 3% of dial reading }}
{{Spec | Output level | +10 dB<sub>m</sub> to -60 dB<sub>m</sub> into 600 Ω in eight 10 dB steps, plus variable control +2.2 dB to -10 dB from calibrated position }}
{{Spec | Output level | +10 dB<sub>m</sub> to −60 dB<sub>m</sub> into 600 Ω in eight 10 dB steps, plus variable control +2.2 dB to −10 dB from calibrated position }}
{{Spec | Output impedance | 600 Ω }}
{{Spec | Output impedance | 600 Ω }}
{{Spec | Distortion | < 0.0008% (-102 dB) from 20 Hz to 20 kHz }}
{{Spec | Distortion | < 0.0008% (−102 dB) from 20 Hz to 20 kHz }}
{{Spec | Sync output | 200 mV<sub>RMS</sub> sine to 20 kHz, at least 120 mV @ 100 kHz; 1 kΩ source impedance }}
{{Spec | Sync output | 200 mV<sub>RMS</sub> sine to 20 kHz, at least 120 mV @ 100 kHz; 1 kΩ source impedance }}
{{Spec | Topology | State-variable oscillator with N-FET (151-1021-00) based AGC. Range switches change capacitors and AGC time constants, main dial changes integrator resistor. Oscillator built from NE5534 amplifiers. }}
{{EndSpecs}}
{{EndSpecs}}


<!-- It's internally an surprisingly unremarkable device, no special tricks or selected parts (except for the AGC FET, which is probably some COTS FET selected for threshold voltage and distortion) or something like that, just an ordinary SVO, some NE553x, standard attenuator and that's it - no magic :-) -->
==Internals==
The SG505 uses a state-variable oscillator topology employing NE5534 opamps and an N-FET (151-1021-00) based AGC. Range switches change capacitors and AGC time constants, the main dial changes the integrator resistor.
 
It's internally an surprisingly unremarkable device, no special tricks or selected parts (except for the AGC FET, which is probably some COTS FET selected for threshold voltage and distortion), just an ordinary SVO, some NE553x, standard attenuator and that's it.


==Pictures==
==Pictures==
Retrieved from "https://w140.com/tekwiki/wiki/Special:MobileDiff/69181"

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