Cirrus Optimus+, Instrument Handbook

Page: 21 / 53

Page 21
Sound Level Meters – User Manual
4.13.1 GPS AssistNow Data
NoiseTools automatically downloads GPS AssistNow data to instruments configured to use the
GPS Module. This is used to reduce the time to first fix (TTFF).
Typically, the use of GPS AssistNow will reduce TTFF from up to five minutes, to under 60
seconds.
It is highly recommended that before each daily use of your GPS sound level meter,
the instrument is connected to NoiseTools to download the latest GPS Assist Now data, which
will complete automatically. Please ensure that the GPS Module is connected to your instrument
before turning it on.
4.13.4 GPS Data in NoiseTools
Open a measurement and click ‘View Map’.