24
AM demodulation analysis
Instruction
Key strokes
Connect the signal generator to the RF IN
connector and turn on the signal generator’s
AM and RF output.
Set the signal generator to 100 MHz, AM; AM
depth, 50%; amplitude, –15 dBM; modulation
rate, 1 kHz.
Turn on the AM demodulation analysis
function.
[MODE], rotate the knob to highlight
Demodulation Analysis, [ENTER], {AM}
Set the carrier frequency of the source.
{Carrier Freq}, [100], {MHz}
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 AM depth limit and turn on the limit
function.
{More 1 of 3}, {Limits}, {AM Depth UP},
[51], {%}, {AM Depth Low}, [49], {%},
{Limits on)}, {Return}
Save the result.
[SYS], {File}, enter the file using the
numeric keypad, {Save}
Detailed metrics provide you with a complete understanding of the AM signal.
Figure 15. AM demodulation
Section 12
AM/FM, ASK/FSK Demodulation (continued)
