User's Manual

FastScan and FlexTest Reference Manual, V8.6_4
A-60
SET STROBE_WINDOW TIME Timing Command Dictionary
SET STROBE_WINDOW TIME
Scope: Enables special timing rules checking
Usage
SET STROBE_WINDOW TIME integer
Description
Specifies the strobe window width.
Some tester formats can measure primary outputs (POs) at the exact time that you
specify with the SET MEASURE TIME statement in the timeplate. However,
other tester formats, such as UTIC, require that output measurements occur during
a specified window of time (strobe window). You can set this strobe window
using the SET STROBE_WINDOW TIME command.
If you specify this command in the timing file, the timing rules checker ensures
that the difference between the measure time in a timeframe and the force time in
the next timeframe equals or exceeds the strobe_window time. This is to ensure
that the outputs remain stable during the strobe window. Note that for some
formats, such as TSSI WGL, this command changes the strobe window in the
output file.
Arguments
• integer
The length of time after the measure event, in which no event can occur.
Example
The following example illustrates a modified strobe window:
//FlexTest application commands
set test cycle 2;
setup pin constraints NR 1 0;
add pin constraints clk_a SR0 1 1 1;
setup pin strobes 1;