Agilent Technologies N9340A Guia do Utilizador descarregar pdf (Página 81)

Making Measurements 4

N9340B User’s Guide 75

3 Press {Carries Freq} > [100] > {MHz} to set the

carrier frequency.

4 Set the attenuation state to Auto (default):

Press {More 1 of 3} > {More 2 of 3} > {Attenuation Auto}

> {More 3 of 3}

5 Press {Y Scale} > {Auto Scale} > {Return} to set the Y

scale.

6 Set the FM deviation limit and turn on the limit

function:

Press {More 1 of 3} > {Limits} > {FreqDev UP} > [11] >

{%} > {FreqDev Low} > [9.9] > {%} > {Limits on} >

{Return}

The red value in the result indicates the demod-

ulated fM deviation exceeds the limits set as

above.

Figure 4-26 FM demodulation analysis

1 2 ... 76 77 78 79 80 81 82 83 84 85 86 ... 173 174

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Agilent Technologies N9340A Guia do Utilizador Página 81