User`s guide

Other Ways to View Bias Point Values 18
-11
Other Wa
y
s to View
Bias Point Values
For the analog portion of your circuit, Schematics provides two
special symbols to display bias point information: VIEWPOINT
and IPROBE.
Usin
g
the VIEWPOINT S
y
mbol to
Displa
y
Volta
g
e
The VIEWPOINT symbol displays the bias point voltage on a
net in your schematic.
To use a VIEWPOINT
1
Place the VIEWPOINT symbol and connect it to the net that
you are interested in.
2
If you haven’t yet simulated, run the simulation.
When the simulation completes, Schematics displays the bias
point value for the net that the VIEWPOINT connects to. After
simulating, you can add VIEWPOINT symbols to display bias
point values on other nets.
Usin
g
the IPROBE S
y
mbol to
Displa
y
Current
The IPROBE symbol displays the bias point current into a pin.
Using an IPROBE symbol is like placing a zero-valued voltage
source on your schematic.
To use an IPROBE
1
Before simulating, connect the IPROBE symbol in series to
the pin you are interested in.
There’s an easier wa
y
to
view bias information
The IPROBE and VIEWPOINT
symbols have been superseded
with the bias information display
feature that is available from the
Analysis menu. To find out more,
see
Viewing Bias Point
Voltages and Currents on
page 18-2.
Note
In the case of
hierarchical symbols and
blocks, you still need to use
the IPROBE symbol to view
currents.
VIEWPOINT s
y
mbol
IPROBE
s
y
mbol