SG505: Difference between revisions
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{{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. }} | {{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 :-) --> | |||
==Pictures== | ==Pictures== | ||
Revision as of 11:31, 24 February 2015
The Tektronix SG505 is a ultra-low distortion oscillator plug-in for the TM500 system.
Key Specifications
| Frequency range | 10 Hz to 100 kHz nom. (typ. 9 Hz to 110 kHz) in four overlapping ranges |
|---|---|
| Frequency accuracy | 3% of dial reading |
| Output level | +10 dBm to -60 dBm into 600 Ω in eight 10 dB steps, plus variable control +2.2 dB to -10 dB from calibrated position |
| Output impedance | 600 Ω |
| Distortion | < 0.0008% (-102 dB) from 20 Hz to 20 kHz |
| Sync output | 200 mVRMS sine to 20 kHz, at least 120 mV @ 100 kHz; 1 kΩ source impedance |
| 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. |
