Maretron Alarm Module ALM100 Manual de usuario descargar pdf (Pagina 271)

Set Delay – The distance between the current GPS position and the reference

position must fall below the Inside Radius Alert Set value for longer than the time

in this field in order for an alert to become active.

Inside Radius Alert Clear – If the alert is active and the distance between the

current GPS position and the reference position rises above the value in this

field, the alert will become inactive.

Clear Delay – The distance between the current GPS position and the reference

position must rise above the Inside Radius Alert Clear value for longer than the

time in this field in order for an alert to become inactive.

Latitude – The latitude of the reference position. This may be typed in as

<degrees>:<minutes> followed by an N or S. If the N or S is missing, North is

assumed. Moving the cursor to another field will reformat the contents of this

field.

Longitude – The longitude of the reference position. This may be typed in as

<degrees>:<minutes> followed by an E or W. If the E or W is missing, East is

assumed. Moving the cursor to another field will reformat the contents of this

field.

Get Current Position – Pressing or clicking on this button will transfer the

current GPS position into the Latitude and Longitude fields.

10.3.6.4.11 GPS Quality Alert

The accuracy, or quality, of a position fix provided by a GPS is dependent on the

number of satellites used to compute the position. A position based on less than

three satellites is considered a “1D” lock, three satellites is a “2D” lock, more than

three satellites is a “3D” lock, and more than three satellites with SBAS is a “3D-

DGPS” lock. These different locks are indicative of the quality or accuracy of the

given position with 1D having the lowest quality and 3D-DGPS providing the

highest quality. The GPS Quality Alert is used to alert you if the quality of the

position falls below a specified quality level.

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Maretron Alarm Module ALM100 Manual de usuario Pagina 271