Cirrus Research Trojan Lite User Manual page 6

Page 6 CK:199L Trojan LITE Noise Nuisance Recorder User Manual Guide
The system also features a pre and post trigger system that allows the audio recordings
to include 20 seconds of information from before and after the user starts and stops the
recording.
If the power is removed, for example, if the user unplugs the mains power supply, the
unit will run on its internal batteries for approximately 8 hours with a new set of
batteries. Changing the batteries is covered in the optimus sound level meter user
manual supplied with the Trojan LITE .
If the power is reconnected before this time, the system will simply revert to mains
power and continue unaffected.
If the mains power is not reconnected and the internal batteries are run down, the
instrument will store the noise data and audio recordings and then shut down safely.
When the mains power is reconnected, the instrument will reboot and after 10 minutes
(or when the remote control is pressed if this is sooner) restart measuring and storing
noise data.
This reduces the risk of data being lost when power is removed from the system.
All of the measurements are stored directly to a high performance memory card which
is internal to the system.
The measurements are stored continuously which prevents data loss and ensures that
the data cannot be tampered with or adjusted before it is downloaded to the reviewing
software.