01-02-2016, 10:12 AM
Function generator is usually applied to kit that can do sine/square/triangle outputs. Normally at relatively low frequencies. An arbitrary function generator can synthesise almost any waveform within its limits.
If you want good quality sine waves then you need a signal generator. These can be very simple or very complex. Pure analogue, conventional synthesised or direct digital synthesis.
An example of a very high quality synthesised geenrator is the tracking generator in my HP network analyser. 0-500MHz. I can set the frequency with a precision of a tiny fraction of a Hz. The absolute accuracy is better than 1ppm though I could improve that by using an external 10MHz reference lock to GPS.
What are you trying to do?
If you want good quality sine waves then you need a signal generator. These can be very simple or very complex. Pure analogue, conventional synthesised or direct digital synthesis.
An example of a very high quality synthesised geenrator is the tracking generator in my HP network analyser. 0-500MHz. I can set the frequency with a precision of a tiny fraction of a Hz. The absolute accuracy is better than 1ppm though I could improve that by using an external 10MHz reference lock to GPS.
What are you trying to do?
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv
