Apollo-X User Manual Version 0.9
25
Timer Command
The
$timer
command will return the timer intervals all configurable settings in the form of a
table.
•
If a value in the table is changed, the response will only be of the row that was modified.
•
If more than one value in a row is changed, the row will be transmitted the same
number of times to indicate each individual change.
•
If multiple values of multiple rows are changed, each row is transmitted separately.
Changing the Timers
The length of the Apollo-X
’s variou
s modes cannot be altered. Start-up and Surfaced modes are
fixed at one hour. However, the Iridium and GPS frequency
can be changed to suit the user’s
requirements.
The GPS and Iridium interval timers can be set independently of each other. If an Iridium
session is queued but no GPS position is stored, a DM message is sent at this time.
Regardless the method being used to communicate with the Apollo-X, timer commands are
always the same format:
$timer
SYSTEM
TIMER-MODE
INTERVAL
Example
Command
Timer Type
Timer Mode
Interval
1
$timer
GPS
0
1h
2
$timer
GPS
2
5m
3
$timer
SBD
0
6h
Example 1 would change the GPS interval of Normal mode to every hour.
Example 2 would change the GPS interval of Surfaced mode to every five minutes.
Example 3 would change the SBD message interval to 6 hours.
After sending the commands from both Example 1 and Example 3, the user would receive one
message every six hours containing six GPS fixes. These messages would be sent at approx.
00:00 UTC, 06:00 UTC, 12:00 UTC and 18:00 UTC.
