EE Pro for TI - 89, 92 Plus
Analysis - Two-Port Networks
35
Field Descriptions - Input Screen
The software is configured for the entry of two-port parameters; an input of one type and an output of another type.
Input Type
: Selecting this item (highlighting and pressing
¸
) displays a menu of input types available to the
user. Selecting
z, y, h, g, a,
or
b
automatically updates the names of the remaining parameter to reflect the choice
of input type. Thus if
z
were selected, the inputs would have the labels listed below:
Z11_
: Enter a real or complex number, variable name, or algebraic expression of defined terms.
Z12_
: Enter a real or complex number, variable name, or algebraic expression of defined terms.
Z21_
: Enter a real or complex number, variable name, or algebraic expression of defined terms.
Z22_
: Enter a real or complex number, variable name, or algebraic expression of defined terms.
Output Type
: Press
¸
to display
z, y, h, g, a,
or
b
, use
D
to move the highlight bar to select the choice
and press
¸
.
Note: The help text (e.g., “Enter P1 Impedance V1/I1 (I2=0)”) shows whether the ratio is an impedance,
admittance or dimensionless ratio, which port is being described, and whether it is the current or the voltage
that is open.
Field Descriptions - Output Screen
..11_
: Returns a real or complex number, variable name, or algebraic expression.
..12_
: Returns a real or complex number, variable name, or algebraic expression.
..21_
: Returns a real or complex number, variable name, or algebraic expression.
..22_
: Returns a real or complex number, variable name, or algebraic expression.
Menu of available
Input screen updates
Input types
for choice of input type
Example 9.1
Convert a resistive two-port network with z11_ = 10, z12_ = 7.5, z21_ = 7.5, z22_ = 9.375 into its equivalent y
values.
1. Choose
z for
Input Type
.
2. Enter 10 for
z11_
, 7.5 for
z12_
, 7.5 for
z21_
, and 9.375 for
z22_
.
3. Choose
h
for
Output Type
.
4. Press
„
to calculate the results which are displayed in the output screen shown below.
Input Screen
Output Screen