
each result indicating that the data was computed, and only represents
the noise level of one device.
10.
To recall the results of each device, access the Results Directory by
pressing
DONE Result Files
11.
To load a Result File, position the cursor at the appropriate title in the
directory and press
Load File
12.
To display the noise graph on the current graticule, press
Done
Other Keys
Plot Data
13.
Pressing
new data.
Redraw Graph
will create a new graticule and only display the
Considerations for the 3 Oscillator Comparison
Function
Unmarked spurs can cause erroneous results for the 3 Oscillator Compari-
son. Marked spurs are automatically stripped out during the computation,
unmarked spurs are not. Unmarked spurs prevent the system from per-
forming a proper subtraction since spurs cannot be subtracted on a power
basis.
Observe the measurement results to insure a minimum of unmarked
spurs are present around the offsets of interest.
The number of unmarked spurs within the measurement can be reduced
by either reducing the measurement bandwidth, or by increasing the
number of averages specified. The number of averages are specified in
the Type/Range display in the FFT and RF Segment Tables.
"ERROR: Insufficient data file for 3 Osciilator Comparison" message ap-
pears momentarily, if the system is unable to find three results to com-
pare in the specified mass storage. Verify that the proper mass storage is
specified for your Result Files. (Refer to Result
Files
in Chapter 3, Graphics
Functions for detailed information on specifying a mass storage location.)
4-22 3 Osc. Compar.
Commenti su questo manuale