User`s manual

MDL-DataManager™ Reference Guide Architectural Energy Corporation
Section 3.0 MDL-DataManager™ Software Page 13
Button Start/Stop
The MicroDataLogger unit has the capability of being started or stopped in the field
manually by holding the push button in for five seconds. This feature is only available if
the logger was configured with the Button Start/Stop Enable option selected. If a
manual start in the field is desired, the Button Start/Stop Enable check box needs to
be clicked on in the Run Time Parameters Group box.
To stop logging hold the push button in for five seconds. Logging will also end when
the configured stop time is reached. The default is to have Button Start/Stop Enable
disabled.
The Start/Stop feature does not permit users to repeatedly start and stop the
MDL unit. The feature allows the MDL to be started with the push button command
and also stopped with the push button command when the feature is enabled. Once
the MDL is stopped with the push button command, it must be reconfigured to start
logging data again.
Note:
This feature requires firmware version 1.07 or higher. If your MDL does not have
firmware version 1.07 or higher, please call to order a firmware upgrade for your
logger. All Model 202 loggers have firmware version 1.08.
Overwrite Data
When Memory is
Full
When Memory Overwrite Enable is checked, the MDL has the capability of
overwriting the oldest data in memory to enable continuous monitoring. For example, if
a piece of equipment is being monitored to detect a failure mode, but the user is
uncertain when the failure will occur, the MDL can be configured to run for an indefinite
period of time. When the memory is filled, the oldest data will be overwritten with the
newest data. Flash memory is erased in 16 K blocks or about 11,000 readings.
To enable this option, click the check box Memory Overwrite Enable. If this option is
chosen, a message box will confirm that you want this option to be selected:
Warnings:
With Memory Overwrite Enable selected, new data will overwrite the
oldest data when memory is full. Verify or cancel this option.
When memory overwrite is enabled, deployment duration can be so long that
the battery will become discharged (Low Battery Stop). To prevent this, use the
Battery Charger for continuous operation from AC power.
Battery Voltage
The Battery Voltage display is the last item in the Run Time Parameters Group. The
Battery Voltage display gives an approximate indication of the battery’s state of
charge. A better indication of battery voltage is obtained by pushing the MDL
pushbutton 4 times and reading the voltage on the display.
Refer to Battery Capacity and Charging for more information.
Memory Capacity
MDL-DataManager software will automatically calculate the MDL’s memory capacity,
based on the user-selected Sample and Storage Intervals chosen. If a duration
period is selected which exceeds the MDL’s memory capacity, a dialog box (error
message) will pop-up. Click the OK button. The duration period is automatically
reduced to the maximum duration period allowed by the MDL’s memory capacity.
Note:
The battery capacity may be the limiting factor in determining the maximum
logging period. If fast sampling and averaging are used, then the battery could
be depleted before the memory is filled.