Agilent Technologies ENA Series Guia do Utilizador descarregar pdf (Página 278)

100

101

272 Chapter 6

Data Analysis

Obtaining the bandwidth of a trace (notch search)

The notch search function is used to obtain the bandwidth, center frequency, cutoff points

(high-frequency side and low-frequency side), Q, and insertion loss of a trace based on the

active marker position. The notch search function starts from the left side of the active

marker position, and ends when points that meet the conditions are found.

Figure 6-15 and Table 6-3 show the definition of parameters obtained by the notch search

function. The notch value in Figure 6-15 must be specified by the user.

Figure 6-15 Bandwidth parameters

Table 6-3 Definition of bandwidth parameters

Bandwidth parameter name Definition

Insertion loss (

loss ) Measurement value at the active marker position when the

notch search is executed.

Lower cutoff point (

low) Lower frequency of the 2 points on both sides that have the

measurement value apart from the active marker position by

the notch value.

Higher cutoff point (

high) Higher frequency of the 2 points on both sides that have the

measurement value apart from the active marker position by

the notch value.

Center frequency (

cent) Frequency of the middle point between the lower cutoff

point and the higher cutoff point ( ).

Bandwidth (

BW) Frequency difference between the higher cutoff point and

the lower cutoff point ( ).

Q Value obtained by dividing the center frequency by the

bandwidth ( ).

high low+

---------------------------

high low–

cent

-----------

1 2 ... 273 274 275 276 277 278 279 280 281 282 283 ... 774 775

Comentários a estes Manuais

Sem comentários

Agilent Technologies ENA Series Guia do Utilizador Página 278

Comentários a estes Manuais

Manuais e produtos relacionados com Multímetros Agilent Technologies ENA Series