Filter
Top Products
Command Dictionary Set Z Handling
FastScan and FlexTest Reference Manual, V8.6_4
2-599
Set Z Handling
Tools Supported: FastScan and FlexTest
Scope: Setup mode
Usage
SET Z Handling {Internal state} | {External state}
Description
Specifies how the tool handles high impedance signals for internal and external
tri-state nets.
The Set Z Handling command specifies how to handle the high impedance state
for internal and external nets. If the high impedance value can be made to behave
as a binary value, certain faults may become detectable. If you do not use this
command to set the Z handling, the default value is X.
Arguments
• Internal state
A literal pair that specifies how the tool handles high impedance values for
internal tri-state nets. The literal choices for the state option are as follows:
X — A literal that specifies to treat high impedance states as an unknown
state. This is the default behavior upon invocation of the tool.
0 — A literal that specifies to treat high impedance states as a 0 state.
1 — A literal that specifies to treat high impedance states as a 1 state.
Hold (FlexTest Only) — A literal that specifies to hold the state previous
to the high impedance.
• External state
A literal pair that specifies how the tool handles high impedance values for
external tri-state nets. The literal choices for the state option are as follows:
X — A literal that specifies not to measure high impedance states; they
cannot be distinguished from a 0 or 1 state. This is the default behavior
upon invocation of the tool.