MH88632 Ver la hoja de datos (PDF) - Mitel Networks

Número de pieza

componentes Descripción

Lista de partido

MH88632

Central Office Interface Circuit

Mitel Networks 

Preliminary Information

MH88632

MH88632

24

Z2

NC

MH88632

24

Z2

NC

23

Z1

22

Z900

NC

32

Z600

Z1 23

22

Z900

32

Z600

NC

Input impedance (Zin) set to 600Ω

Note: Make connection between Z1 and other points as short as possible

Input Impedance (Zin) set to 900Ω

Figure 4 - Input Impedance (Zin) Settings with Zin equal to 600 or 900Ω

MH88632

24

Z2

Z1 23

22

Z900

Z600 32

10 x Zin

Notes:

1) The 10xZin network must be set to 10 x the desired input impedance (Zin).

2) The network balance must be set to the desired network balance. (See

section on network balance.)

3) Make connection between Z1 and component as short as possible.

RP

Z2

CP

Z1

RS

Zin = 0.1 x

1

RS+ 1/RP + S x CP

where S = j x w

and w = 2 x Π x f

Example:

If RS = 2200Ω, RP = 8200Ω, CP= 11.5nf

Then the input impedance (Zin) is 220Ω in

series with 820Ω in parallel with 115nF.

Figure 5 - Input Impedance (Zin) Settings with Zin not equal to 600 to 900Ω

2-245

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