## Intel® Quartus® Prime Pro Edition User Guide: Scripting

ID 683432
Date 12/13/2021
Public

 Tcl Package and Version Belongs to ::quartus::sdc_ext Syntax set_time_format [-h | -help] [-long_help] [-decimal_places ] [-unit ] Arguments -h | -help Short help -long_help Long help with examples and possible return values -decimal_places Number of decimal places to use -unit Default time unit to use Description Sets time format, including time unit and decimal places. Time units are assumed to be nanoseconds (ns) by default. The "-unit" option overrides the default time units. Legal time unit values are: ps, ns, us, ms. Time units are displayed with three decimal places by default. The "-decimal_places" option overrides the default number of decimal places to show. The smallest resolution of all times units is one picosecond (ps). Any additional specified precision will be truncated. Example Usage # Create two clocks with a clock period of 8 nanoseconds. create_clock -period 8.000 clk1 set_time_format -unit ps -decimal_places 0 create_clock -period 8000 clk2 Return Value Code Name Code String Return TCL_OK 0 INFO: Operation successful TCL_ERROR 1 ERROR: The default time unit can be set to ms, us, ns, or ps. Please specify one of these units instead.