Overload Rejection; Fast Averaging; Previewing - HP 3563A Operating Manual

Using The Linear Resolution Mode
Averaging I n The Linear Resolution Mode

Overload Rejection

If the magnitude of a signal exceeds the input range (see chapter
Range"), the time record containing this signal distorts the measurement if it is included in the
average. To avoid this, the HP 3563A can automatically reject any time records containing such
data. To select overload rejection, press
OV REJ ON OFF
softkey to
rejected. If records are rejected, the analyzer continues to measure and average until it collects the
requested number of undistorted records.

Fast Averaging

Fast averaging causes the HP 3563A to measure and average as fast as possible without stopping to
update the display every time an intermediate average is calculated. The display is not updated until
the specified number of averages have been calculated. The message "Fast Averaging" is displayed
in the lower right corner of the screen to advise that fast averaging is in effect. To select fast
averaging, press AVG, NEXT ,
and deactivated during a measurement, allowing you to check the measurement's progress. Fast
averaging can be used only with stable and peak hold averaging.
Note
Fast averaging must be enabled to ensure maximum real time bandwidths.

Previewing

Previewing gives you the option of approving each time record before it is included in the average.
The H P 3563A offers both manual previewing, which pauses indefinitely until you answer with the
YES (1 ) NO
or (0) keys; and timed previewing, which pauses for a specified time then automatically
includes each record if you do not reject it. To select previewing, press
softkey. To select manual previewing, press the
TIMED PRVIEW
previewing, press the
instrument to pause while you decide on each record. Note that you must select an averaging type
to use previewing (Le., previewing cannot
3-80
AVG,
followed by the
ON.
The message "Data Rejected" is displayed when a record is
and toggle FST AV ON OFF
MANUAL P RVIEW
softkey and enter the number of seconds you wish the
be
used with unaveraged measurements).
7
under "Setting the Input
NEXT
softkey, then press the
to ON. Fast averaging can be activated
AVG,
followed by the
softkey; to select timed
NEXT