SonTek/YSI
ADVField/Hydra Operation Manual (September 1, 2001) 29
3.5. System Commands
System commands relate to general operation of the ADVField.
• Starting data collection
• Entering sleep mode
• Displaying serial number and revision numbers
• Setting the clock
• Data output and storage
Each command is shown with its full name, short name (if one exists), optional parameters (in
brackets), and appropriate descriptions.
Start
• Places the ADV in data acquisition mode (§3.1.2) and starts real-time data collection.
• The ADV first saves all recently entered commands (i.e., does a
SaveSetup
).
• Data collection begins automatically thereafter, ignoring all deployment parameters (§3.7)
and using the most recently entered setup parameters (§3.6).
• A delay of about two seconds is required for the ADV to initialize and check for potential
boundary interference. If precise control of start time is required, see the
Setup
and
Go
commands (below).
• Note: The
Run
command (which is equivalent to
Start
) is still supported to maintain com-
patibility with previous firmware versions.
Deploy
• Places the ADV in deployment mode (§3.1.3) and starts autonomous data collection.
• The ADV first saves all recently entered commands (i.e., does a
SaveSetup
).
• Data collection begins when the ADV clock reaches the specified
StartDate
and
Start-
Time
using the most recently specified setup (§3.6) and deployment parameters (§3.7). If the
current date and time is after the specified start date and time, data collection begins imme-
diately (actually, there is a delay of about 2 seconds to initialize the system and look for po-
tential boundary interference).
• In deployment mode (§3.1.3), data is stored to the internal recorder. As such,
Deploy
can
only be used if the optional internal recorder is installed.
• Note: Do not confuse this command with the
Deployment
command (§3.7)
SaveSetup
• Saves all current parameter settings to the ADV’s internal memory (EEPROM).
• Must be done before the system is shut down (or before a
BREAK
is sent) or any recently en-
tered commands will be lost.
• Is done automatically as part of the
Start
and
Deploy
commands.
Cal
• Places the ADV in calibration mode for the analog output voltages.
• You are instructed to press
H
,
M
, or
L
, which sets all four analog output voltage lines to their
high (nominally 5.0 V), mid (nominally 2.5 V), and low (nominally 0.0 V) levels.
• For more information about analog output calibration, see §5.4.
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