User`s manual

Section 3: Configure Menu, Part I - General System Setup
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Section 3: Configure Menu, Part I - General
System Setup
This section describes the setup of the following in the Configure menu:
• Alarms
• ASCII Output
• Header Form
• Mark Variable Selection
• NMEA Lat/Lon Interface
• Remote Display
• Water Sampler Configuration
For setup of the instrument configuration (.con) file, see Section 4:
Configure Menu, Part II - Instrument .con File.
Alarms
SEASAVE can set up two types of alarms:
• Alarm in the Deck Unit for an altimeter integrated with the CTD, and/or
• Alarm on the SBE 14 Remote Display
Altimeter Alarm
1. In the Configure menu, set up the CTD configuration (.con) file as desired
(see Section 4: Configure Menu, Part II - Instrument .con File). Select the
altimeter as one of the auxiliary voltage sensors. Save the changes.
2. In the Configure menu, select Alarms / Altimeter Alarm. In the Altimeter
Alarm Configuration dialog box, select Enable Altimeter Alarm. Enter the
alarm parameters and click OK.
• Sea-Bird recommends Minimum Pressure to Enable Altimeter Alarm
> 20 decibars to prevent the alarm from turning on while on the ship
deck or as the system is entering the water.
• Set Alarm Hysteresis greater than the expected ship heave (swell) to
prevent on-off-on-off sounding of the alarm caused by ship heave.
Example: You want the alarm to turn on at 10 meters; set Alarm
Setpoint = 10 meters. There is a 0.5 meter swell; set Alarm Hysteresis
=1 meter, which should be sufficient to account for possible 0.5 meter
upward movement due to ship heave. The alarm will sound at
10 meters and will stay on until the altimeter goes above 11 meters,
when it will shut off until it falls to 10 meters again.
Sea Surface
Alarm not on, regardless of altimeter reading
Minimum Pressure to Enable Altimeter Alarm
Alarm Hysteresis - alarm stays on in this
range after Alarm Setpoint is reached
Sea Bottom
alarm on when altimeter in this range
Alarm Setpoint
Note:
Setup of all parameters in the
Configure menu is included in the
SEASAVE configuration (.cfg) file.
To save the setup, you must save
the .cfg file (File menu / Save
Seasave configuration as . . .)
before exiting SEASAVE.