Cirrus Optimus+, Instrument Handbook

Page: 14 / 53

Page 14
Sound Level Meters – User Manual
An AC output is available on the instrument via the 3.5 mm jack socket. The output is
unweighted, and the output level can be adjusted using the options in the AC-out menu.
This output can be used with external instrumentation. See page 42 for details of the electrical
outputs.
4.4 Screen saver
If no keys are pressed for six minutes the display will dim to preserve battery and screen life and
reduce power consumption. After 30 minutes with no key presses, the display will switch off
completely and the keypad will flash every two seconds to show that the instrument is still
powered. The screen dim and screen saver functions will operate during measurements as well
as when the instrument is not measuring. Press any key to turn the display back on.
The time intervals for the screen dim and screen saver are configurable in NoiseTools.
External power via USB External power via multi-pin connector