Configuration Setup
47
Filter Frequency
The
Filter Frequency
menu line is always active. This menu line reads as
Filter:
with
a default frequency of
50kHZ.
It allows you to select a low-pass filter, used to limit
the input signal to the entered value before amplitude measurements. Note that this
filter has no direct affect on frequency measurement. You may select from
0.0005Hz
through
2mHz
for this filter’s 3dB frequency.
The limitations on the actual corner frequency are regarding the following:
•
There is no actual filter for entered frequencies above
250kHZ
. In this case the
actual bandwidth is in excess of
2mHz
.
•
The actual minimum filter frequency is
4.88Hz
.
•
The physically available filter frequencies are in the ratio of
1.2:1
steps within
the
4.88Hz
to
200kHz
range.
•
Be aware that if the ratio of the filter frequency is less than 50 times the
fundamental frequency,
—Then—
The instrument’s amplitude accuracy is affected and the number of available
harmonics is reduced in accordance with the ratio.
Maximum Harmonics
This sets the
Maximum Harmonic
number that will be available for Results Data.
The display reads:
Max Harmonics:
The default is
200.
Setting a higher number in a
parameter selection than the set harmonic number will yield zero results. For
optimum harmonic results, note that:
•
The frequency of the maximum available harmonic is nominally
200kHZ
.
•
Set the
MAXIMUM HARMONIC
fairly high for low-frequency fundamental
frequencies, such as, 200 at 50Hz, to reduce higher fundamental frequencies,
such as, 10 at 20kHz.
•
Setting an abnormally low maximum harmonic at low fundamental frequencies
may affect the stability of the phase measurement, as may setting an unusually
high harmonic at high fundamental frequencies.
•
The maximum available number of harmonics is the lower of 4096 / RBW Ratio,
or 2047.
•
Setting a maximum harmonic of zero, inhibits all harmonic analysis. In this case
only
AC+DC
,
AC
only, and
DC
only, parameters will yield measured results, all
harmonic related results will be zero. If these are the only required parameters,
then some increase in performance may be found by disabling harmonic analysis
in this manner.
Summary of Contents for Xitron 6000-2
Page 1: ...USER S GUIDE 6000 2 6000 3 Phase Angle Voltmeters...
Page 2: ......
Page 36: ...36 6000 2 3 User Guide Rev E...
Page 86: ...86 6000 2 3 User Guide Rev E...
Page 94: ...94 6000 2 3 User Guide Rev E...
Page 101: ...Appendix B 101...
