PSDFRQ, TBLNO1, TBLNO2, FREQ1, FREQ2, FREQ3, FREQ4, FREQ5, FREQ6, FREQ7
Defines the frequency points for the input spectrum tables
PSDVAL vs. PSDFRQ for PSD analysis.
TBLNO1Input table number. When used
with the COVAL or the QDVAL command, TBLNO1 represents the row number of this table. Up
to 200 tables may be defined.
TBLNO2Input table number. TBLNO2 is used only for the COVAL or the QDVAL commands and represents the column number of this table.
FREQ1, FREQ2, FREQ3, . . . , FREQ7Frequency points (cycles/time) for spectrum vs. frequency
tables. FREQ1 should be greater than zero,
and values must be in ascending order. Log-log interpolation will
be used between frequency points.
The spectrum values may be input with the PSDVAL, COVAL , or QDVAL commands. A separate PSDFRQ command must be used for each table and cross table defined. Frequencies must be in ascending order.
Repeat PSDFRQ command for additional frequency
points. Values are added after the last nonzero frequency. If all
fields after PSDFRQ are blank, all input vs. frequency
tables are erased. If TBLNO1 is nonblank,
all corresponding PSDVAL tables are erased. If
both TBLNO1 and TBLNO2 are nonblank, all corresponding COVAL and QDVAL tables are erased.
This command is also valid in PREP7.