28
FSK demodulation analysis
Instruction
Key strokes
Connect the signal generator to the RF IN
connector and turn on the signal generator’s
FSK and RF output.
Turn on the FSK demodulation analysis
function.
[MODE], rotate the knob to highlight
Demodulation Analysis, [ENTER], {FSK}
Set the carrier frequency.
{Carrier Freq}, [100], {MHz}
Set the symbol rate.
{Symbol Rate}, [10], {ksps}
Set the filter type.
{Filter Setup}, {Ref Filter}, {Nyquist},
{Return}
Set the attenuation state to auto
{More 1 of 3}, {More 2 of 3}, {Attenuation
{Auto}}, {More 3 of 3}
Set the Y scale.
{Y Scale}, {Auto Scale}, {Return}
Set the FSK deviation limit and turn on the
limit function.
{More 1 of 3}, {Limits}, {FreDev UP}, [41],
{kHz}, {FreqDev Low}, [39], {kHz}, {Limits
on)}, {Return}
View the eye diagram.
{More 2 of 3}, {More 3 of 3}, {View}, {Eye
Diagram}
Section 12
ASK/FSK Demodulation Analysis (continued)
Figure 19. FSK demodulation
Figure 20. FSK eye diagram
