Introduction

The "Voyage Data Recorder" module needs to be configured to access this feature.

In addition to record Own Ship position and instruments (refer to the Boat Replay chapter for more information), the  user can set TimeZero to record Targets (AIS and ARPA), Radar Echo. The data can then be replayed from any WorkSpace that has been configured with a time line. Various Record & Replay Options allow the user to select which data to record, and in the case of Radar, the frame rate and quality can be adjusted to save space.

TimeZero can store and playback up to 30 days of data that can be replayed immediately. When the recording limit is reached inside TimeZero, the data is deleted

IMPORTANT: A solid state hard drive is required to support recording and replaying data in TimeZero

Enabling Recording

By default, TimeZero is set to record Targets and Events. Radar recording can be enabled from the Record & Replay Options.

Recording automatically starts when the software is opened.

Recording can be enabled or disable by clicking on the "Voyage Data Recorder" tool (hidden by default). TimeZero will remember the state of the recording tool when restarting the software. If the recording is disabled, a notification will be displayed at startup.

Recording Space (average):

  • Events Recording: events recording is approximately 1MB per day (when TimeZero generates lots of events).

  • Target Recording: approximately 200MB per day (200 AIS targets and 30 ARPA targets at all times).

  • Radar Recording at maximum frequency (every radar turn) in high quality: approximately 1GB per day for a properly tuned radar picture. Decreasing the resolution to "normal" or "low" would reduce the size by a factor of 3 or 9 respectively. Decreasing the recording frequency would divide the size of the recording by the same amount. Lowering the Radar Quality (from 8 to 2 bits) would save 30% space. If space is an issue, we recommend lowering first the quality (4 bits for example), then the recording frequency and then the resolution. A good compromise in between quality and size would be recording in High Resolution at 4 bits every 2 antenna turn. This would result in 500MB per day.

A 500GB Solid State Hard Drive should be enough space to hold the operating system, software, charts and one month of active recording. If the remaining disk space falls below 20GB, a first alarm will be triggered in TimeZero ("Disk Low Space Alarm"). It is recommended to adjust the archiving process by decreasing the amount of day recorded if you see this alarm. If nothing is done and if the hard drive falls below 5GB, a "Disk Full Alarm" will be triggered and the recording of data will stop to avoid overfilling the disk.

TIPS: If a rule is set to move and activate a camera when a target enters an area, it can be a good idea to set that rule to also trigger an event. That way, it will be very easy to locate at which time a target entered an area, and when to look at the camera replay.