Table of Contents
Advertisement
State
Unknown
Powering Up
Removed
Format Required
Present
It may still be possible to format an Unknown disk.
However, if the disk remains Unknown after a format, then it could be a USB 3.0 device
3.1.3 Session Directory
Each newly created session is stored as a separate directory within the USB disk. Each session directory contains the
following:
• Session log file
Used to record errors and events which occurred during the logging session.
• Session information file
Used to store logger configuration during the logging session.
• Data directories
Directories in which logging data is stored into.
3.1.3.1 Session Log File
Session information messages, along with any session errors are displayed within the log file.
Ngara maintains a copy of this log file in its internal memory. This allows correct error logging, even when access to
the USB is not possible.
If no disk errors are encountered during a session, the internal log file is always flushed to the USB disk. However, if
there were errors found, the log file must be manually flushed at the end of the session.
3.1.3.2 Session Information File
Session settings are also stored to the session directory.
Tag
SERIAL
VERSION
CALIBRATION
RANGE MULTIPLIER
SESSION NAME
SESSION START
SESSION END
TWEIGHT
WAVE REC
Version — 25-7cd7566
Table 2: Allowable Disk States
Description
Current disk is invalid
New disk is currently being mounted
No valid disk found
Disk with invalid file table or sessions deleted
Valid disk found
Table 3: Session Detail File
Description
Logger serial number
Logger software version
Logger calibration (absolute)
Logger range multiplier calibration (absolute)
Session Name
Session start time
Session end time
Time Weighting (125ms or 1s)
Wave file recording (ON or OFF)
Ngara
User Manual
Page — 14 of 80
Advertisement
Table of Contents
