Calibration
6-5
Harmonic Distortion Adjust
This adjustment minimizes the DS345's 2nd, 3rd, and 5th harmonic distor-
tion. A complete calibration is necessary after this adjustment.
1) Set the DS345 to sine wave, 8 Vpp, 15 kHz. Connect the DS345's output
to the FFT analyzer with a 50
Ω
terminator. Set the FFT analyzer to display
from DC to 100 kHz.
2) Adjust P602 (bottom board) to minimize the levels of the third harmonic at
45 kHz and the 5th harmonic at 75 kHz.
3) Readjust the AC-DCgain balance of the output amplifier (see Output Am-
plifier Bandwidth adjustment, step 2).
4) Recalibrate the DS345.
Содержание DS345
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Страница 5: ...DS345 Synthesized Function Generator iii...
Страница 20: ...Introduction 2 4...
Страница 64: ...Programming Commands 3 14...
Страница 72: ...Program Examples 3 22...
Страница 78: ...Troubleshooting 4 6...
Страница 82: ...Performance Tests 5 4...
Страница 101: ...Calibration 6 10...
Страница 109: ...Arbitrary Waveform Composer 7 8...
Страница 117: ...DS345 Circuitry 8 8...