Model 90 Quantifier Sound Level Meter
Page 55
stored
See page 48
The measurement was reset
Restart the measurement
In 1:1 or 1:3 Octave Band
Mode, the filters do not
automatically sweep
The Run Duration has been set
to Manual.
Select a Preset Run Duration
The measurements are not
aligned with the clock
The Auto-Synchronise function
is switched off
Switch on the Auto-
Synchronise function
Instrument has selected
Impulse Time weighting
L
Ieqt
User Metric may have
been selected
Select SEL User Metric and
change Time Weighting
required
Overload symbol is shown
The noise level is too high for
the current range
Select a higher measurement
range
Under Range symbol is shown The noise level is too low for
the current range
Select a lower measurement
range.
The measurement stops after
a set time
The Run Duration has been set
to a preset value.
Select the Manual Run
Duration
The Run Duration has been set
to the User Defined value.
Select the Manual Run
Duration
The measurement does not
stop as expected
The Run Duration has been set
to Manual
Select a preset Run Duration
Downloading Measurements
Symptom
Possible Cause
Possible Remedy
Measurements cannot be
downloaded
No measurements have been
stored
Repeat Measurement
Instrument is not connected to
PC
Connect the USB Cable and
retry.
Batteries are too low
Replace batteries
