Model 90 Quantifier Sound Level Meter
Page 34
Measurement Auto Synchronise
This function is new to the MODEL 90 Series and allows the start of the measurements
to be started in time with the clock of the instrument.
The diagram below shows how the measurement runs from when the Start key is
pressed for the duration defined by the Run Duration.
This method of starting and stopping the measurements is used, for example, when the
application is Occupational Noise and the user wants to control the starting and
stopping of the measurement directly.
However, in many applications such as Environmental Noise measurements, it is
important to start the measurements at a predetermined time. For example, when
making environmental noise measurements that are for 10 minutes, the MODEL 90 can
be set to start the measurements on 10 minute boundaries.
The diagram below show the measurement starts with the Auto Sync function enabled.
To enable the Auto Sync function, select the Run Duration option from the menu and
then select the Synchronise function. Use the Up and Down arrows to switch on the off
the Auto Synchronise function. Press Exit when finished.
Key Press
Display
