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Using the Optical Spectrum Analyzer
The Traces Menus
To set the Hold.... function
1
Press the front-panel
Traces
key.
2
Press the
Hold <trace>....
softkey to select None, Min or Max.
None turns the Hold function off.
The maximum hold function compares the current amplitude value of each
point on a trace in the current sweep to the corresponding point detected dur-
ing the previous sweep, then displays the maximum value.
The minimum hold function compares the current amplitude value of each
point on a trace in the current sweep to the corresponding point detected dur-
ing the previous sweep, then displays the minimum value.
Pressing the
Max/Min Reset
softkey resets the hold function to the last acquired
trace. Subsequent traces are accumulated in the hold sequence.
To set the trace math for trace C
1
Press the front-panel
Traces
key.
2
Press the
Trace Math....
softkey.
3
Press the
Default Math Trace C....
softkey to define the math expression to be used
when the math operations are turned on. The result is placed in Trace C.
4
Select the appropriate softkey to define the math expression.
C=A
LOG
–B, C=A
LOG
+B, C=A
LIN
–B, C=A
LIN
+B
Defines the math expression to be used and turns the math operation
ON
. The
math operation is performed in linear units.
Trace C Math Off
Determines whether or not math processing is performed.
book.book Page 58 Monday, January 31, 2000 10:34 AM