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9.
OPERATING HINTS FOR THE 2032
The following includes some hints for obtaining the best possible performance from the
2032.
9.1. USE OF INPUT AUTORANGE
Good results require good measurements, and good measurements require optimum
use of the 2032's dynamic range. Hence, extensive use of the INPUT AUTORANGE
function is recommended. Some general hints regarding the use of INPUT AUTOR-
ANGE are as follows:
1.
Always use INPUT AUTORANGE after changing the generator signal type or level.
2.
Always use INPUT AUTORANGE after changing the Frequency Span or Zoom Cen-
tre Frequency. This is because the output of the built-in signal generator of the
2032 follows the span and centre frequency, and changes in these settings will
change the generator output.
3.
The 2032 has DC-coupled amplifiers, and hence correction is necessary for any
internal DC offset. This correction is made each time INPUT AUTORANGE is used.
It is also made when the peak input voltage, input polarity, input source, or input
filter is changed, and on SYSTEM RESET.
4.
Note that INPUT AUTORANGE can be used both for continuous signals and repeat-
ed transients.
9.2.
INFLUENCE OF OVERLOADS ON AVERAGING
112
The 2032 is designed such that any data influenced by an input overload is rejected
from an average*. This leads to the following observations:
1.
If the signal is known to be filled with unusual transients, it may be advisable to
decrease the input sensitivity of the 2032 by one or two steps to guard against
overload.
2.
When working in very narrow Frequency Spans, where the record length is long, it
is advisable to decrease the input sensitivity. This is to prevent occasional tran-
sients overloading the
inpu~
and thereby excluding the current record from being
used in an average.
3.
In averaging in general, remember that CONTROL AVERAGING "Start" both clears
the averager accumulator and starts the average. Hence, to restart an average, it
is only necessary to press "Start".
*
Note that this can be overridden using Special Parameter 3, see Section
12.5.3.
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