Cirrus Research CR 151, Руководство пользователя

Страница: 19 / 47

optimus sound level meter user manual
Page 19
Information Bar
The information bar shows icons when functions are active. Examples of the icons are
shown in the diagram above.
Navigation Bar
The navigation bar shows which View or Menu you are looking at.
Measurement Display
In addition to primary and secondary functions, the display features an Analog Bar on
the left of the screen, which shows real time A-weighted sound level. At the bottom of
the screen is the Page information for your View, ie 1 of 3.
Status Bar
When the
optimus
is not measuring, the status bar shows the date and time. When it
is measuring, the display shows the elapsed time and in Review mode it shows the
measurement number and the total number of measurements stored.
Overload and Under-Range Indication
Overload is indicated by the word 'overload' and Under-Range is indicated by the
word ‘under range’ (in the chosen language) on the display.
On the Sound Level View and Leq View the indicators are situated beneath and to the
left of the large number. When a measurement is not in progress, the indicator is
shown for at least 1 second, so that very short transient overload or under-range
conditions are visible to the operator.
When a measurement is in progress, the overload indicator stays on until the
measurement is stopped or reset.
In some circumstances the overload and under range indicators will be shown
simultaneously. In this case the text will be abbreviated to save space.
Note that if any displayed decibel value on the Sound Level View or Leq View is below
14.0dB, the value will be replaced by dashes ('---'). These levels are typically below the
noise floor of the microphone capsule and so will only be encountered during
electrical testing.
‘Bluescreen’
Under rare circumstances, when the
optimus encounters a condition it cannot recover
from, a ‘bluescreen’ error message will show with an error code. If this should happen
to your
optimus
, please make a note of the code so the engineers at Cirrus Research