Agilent Technologies N9320A Guia do Utilizador descarregar pdf (Página 130)

122 N9320A Spectrum Analyzer

5 One-Button Measurements

Channel Power

Channel Power measures the power and power spectral

density in the specified channel bandwidth. A white frame

on the display indicates the edge limits of the channel

bandwidth. The user must specify the center frequency,

reference level, and channel bandwidth to be used for the

measurement.

The power calculation method used to determine the channel

power is a traditional method known as the integration

bandwidth (IBW) method. A swept spectrum is used as the

basis for this calculation. Therefore, it is important to set

the resolution bandwidth correctly before making this

measurement using the following formula:

Where k is a value between 2 and 6 and n=461 is the

number of trace points.

Figure 28 Channel Power Measurement

RBW

kspan()()

----------------------------=

Measurement

Result

Active Function

Area

1 2 ... 125 126 127 128 129 130 131 132 133 134 135 ... 181 182

Sem comentários

Agilent Technologies N9320A Guia do Utilizador Página 130