Preliminary Information
MH88625
MH88625
Z2
24
NC
MH88625
Z2
24
NC
Z1
23
Z1
23
22
Z900
22
NC
Z900
32
Z600
Z600
32
NC
Input impedance (Z
in
) set to 600Ω
Note:
Make connection between Z1 and other points as short as possible
Input Impedance (Z
in
) set to 900Ω
Figure 4 - Input Impedance (Z
in
) Settings with Z
in
equal to 600 or 900Ω
MH88625
Z2
24
10 x Z
in
23
Z1
Z1
RS
RP
Z2
CP
22
Z900
Z600
32
Z
in
= 0.1 x
(RS + 1)
1/RP + S x CP
where S = j x w
and w = 2 x
Π
x f
Notes:
1) The 10xZ
in
network must be set to 10 x the desired input impedance (Z
in
).
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.
Example:
If RS = 2200Ω
,
RP = 8200Ω, CP= 11.5nf
Then the input impedance (Z
in
) is 220Ω in
series with 820Ω in parallel with 115nF.
Figure 5 - Input Impedance (Z
in
) Settings with Z
in
not equal to 600 to 900Ω
2-191
MITEL [ MITEL NETWORKS CORPORATION ]
