Agilent Technologies 8590, 90235 STDEV Standard Deviation of Trace Amplitudes

STDEV Standard Deviation of Trace Amplitudes
STDEV
Standard Deviation of Trace Amplitudes
Returns the standard deviation of the trace amplitude in measurement units.
Syntax
function path only
9 user-defined trace I
XSTDEV
Item Description/Default
RanBe
User-defined trace A trace deEned by the TRDEF command. Any valid trace name.
Trace range A segment of trace A, trace B, trace C, or a user-defined trace.
Prerequisite Commands: TRDEF when using a user-defined trace. TS when using trace data.
Related Commands: MEAN, PDA, PDF, VARIANCE.
Example
The following program segment finds the standard deviation of the amplitude of trace A.
OUTPUT 718; “IP; ”
OUTPUT 718 ; “SNGLS ; ”
OUTPUT 718;“CF 300MHZ;SP 2MHZ;RB IOOKHZ;”
OUTPUT 7 18 ; “TS ; ”
OUTPUT 718;“STDEV TRA?;”
ENTER 718;Number
PRINT “THE STANDARD DEVIATION OF TRACE A ” ;Number/lOO; “DB”
Initializes spectrum analym
Activates single-sweep mode.
Changes the center fre-
quencg, span, and reso-
lution bandwidth.
!Rxkes sweep.
Finds the standard de-
viation of trace A.
Get the response from
the spectrum analyzer:
Programming Commands 5-629