Manual

3.83.8
3.83.8
3.8
SweepSweep
SweepSweep
Sweep
ML1 supports two sweep modes:
• LEVEL RMS as function of frequency
• LEVEL RMS, THD+N and Frequency as function of time
The required sweep mode may be selected through the SWEEP entry of
the measurement function submenu.
a.a.
a.a.
a.
Frequency SweepFrequency Sweep
Frequency SweepFrequency Sweep
Frequency Sweep
During a frequency sweep, ML1 records the LEVEL RMS of every input
signal that has a stable frequency and level, provided that the frequency
is higher than the one of the previous sample (otherwise the sample will
be neglected).
Within a graph, every recorded sample is connected by a straight line
approximation to the previous/next sample, thus building the displayed
curve (Fig 20).
In practice, the following steps are required / available for the execution
of a frequency sweep.
• To enter the frequency sweep mode, select in the measurement
function submenu SWEEP -> FREQ.
• If required activate a filter through the corresponding menu.
Measurement Functions
3-13
Fig 20 Frequency Sweep Graph
Measurement Functions
3-12
3.73.7
3.73.7
3.7
Signal Balance ErrorSignal Balance Error
Signal Balance ErrorSignal Balance Error
Signal Balance Error
The signal balance error reflects the deviation from the perfect balance
status. No signal balance error indicates that the absolute levels at XLR-
pin 2 and pin 3 relative to pin 1 (ground) are identical and opposite in
polarity.
In the BALANCE mode, the signal balance error is shown in a numerical
value, which is the deviation from the optimum in percent.
Balance Indicator: The direction of the deviation is indicated by the
arrows like 2 < 3 or 2 > 3, whereby the numbers 2 and 3 represent
the signal at XLR-pin 2 and pin 3.
In the Level, THD+N and Polarity (electrical input only) measurement
function, the Minilyzer permanently monitors the balance of the input
signal by a graphical indicator. This enables e.g. to check whether
cable connections are made correctly.
Bargraph: The bargraph shows an analog display of the signal balance
error. The scaling may be controlled automatically or manually.
• Select manual (M) or automatic (A) scaling by the bargraph zoom
mode field.
• Within the manual scaling press the left/right keys to scroll through
the actual range or the up/down keys to increase or decrease the
range (sensitivity) of the bargraph scale.
• Press enter to confirm your setting.
Fig 19 Signal Balance Error Screen