I am measuring output of 45Mhz of programmable oscillator of: http://www.cardinalxtal.com/products/programmable-oscillator-3
1. When I measuring it on gwinstel gds-11028 DSO,.
2. Gnd loop is mimized, like this: https://goo.gl/images/QqHD2d
3. Probes are conencted directly on oscillator output pins
4. Vdd = 3.3V
5. When on 1x probe: Signal is sine wave riding on 1.6Vdc. Peaks of sine wave dont touch the 3.3V & 0V limtis.
6. When on 10x probe, signal is sine wave which seems to ride on dc also, but this time negative peak of sine goes below zero volt
7. Why is that so?
8. Also what is output of this oscillator, we have TTL version, is it sine wave?
I thought it would be square wave.
1. When I measuring it on gwinstel gds-11028 DSO,.
2. Gnd loop is mimized, like this: https://goo.gl/images/QqHD2d
3. Probes are conencted directly on oscillator output pins
4. Vdd = 3.3V
5. When on 1x probe: Signal is sine wave riding on 1.6Vdc. Peaks of sine wave dont touch the 3.3V & 0V limtis.
6. When on 10x probe, signal is sine wave which seems to ride on dc also, but this time negative peak of sine goes below zero volt
7. Why is that so?
8. Also what is output of this oscillator, we have TTL version, is it sine wave?
I thought it would be square wave.