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Entering the two parameters for the shunt and pressing "Set Parameters" will update the scale factor value in the uDL1
configuration with the appropriate value for the shunt.
4.3.2.5 Input Range
The "Input Range" section is used to select the measurement range. The low range accepts a maximum of +/- 150mV
DC or 110mVRMS AC and is typically used for current shunt measurement. The medium range accepts a maximum of
+/- 20 VDC or 14 VRMS AC and is typically used to measure reference cells. The high range accepts a maximum of
+/- 150 VDC or 106 VRMS AC. All three ranges have a greater than 20Mohm input impedance. For measurement of
AC line voltages (i.e. 120 or 240 VAC) an external attenuator is required.
4.3.2.6 Time Display
The uDL1 can be configured to display the current time during the initial 60 seconds after the analog cable is attached
and for 5 seconds after the analog cable is removed. After the analog cable is attached, the display will cycle through
the measurement data and the time for 60 seconds. Time is shown in 12 hour format with an 'A' in the lower right of
the display indicating AM times. To enable this feature, check the 'Enabled' box.
The time may be displayed in UTC or local time. Click on the corresponding radio button to select the display time
type. For local time, the time zone of the configuration PC is used to select time zone offset for the uDL1 display.
4.3.2.7 Notes
The "Notes" section allows the user to enter freeform text. This text is inserted into the start of the exported CSV file.
A maximum of 100 characters can be entered into this field.
4.3.2.8 GPS (Advanced Unit Only)
The "GPS (Advanced Unit Only)" section allows setting GPS synchronization options for the Advanced Unit operation.
The "Require GPS Time Lock To Start Sampling" forces the uDL1 to wait until accurate time is received from the GPS
satellites before starting data recording after the analog cable is inserted. This option would be checked when high
accuracy time stamps are needed on the measurement points.
When checked, the "Disable Long Term GPS Time Synchronization" option stops the uDL1 from periodically turning
on the GPS receiver to maintain accurate time. This option would be enabled to save power when high accuracy timing
is not required for a particular measurement session. The uDL1 will attempt to synchronize the internal clock to the
GPS signal every hour if this option is not enabled.
In addition, with firmware v1.11 and higher, it is also possible to apply a limit check to the position accuracy of the GPS
receiver before a latitude/longitude position is logged by the uDL1. To enable this functionality, check the box labelled
"Enabled Minimum EHPE Validation For Position". The minimum estimated horizontal position error (EHPE) limit
can then be entered, in meters, in the box labelled "Min EHPE (m)". The limit must be between 3.0 and 200.0 meters.
A timeout is specified in the "EHPE Timeout (min)" box in minutes. If the minimum EHPE limit is not met within this
timeout period, the current position is logged anyway and the unit continues with data acquisition. The EHPE timeout
can be set between 1 and 3600 minutes.
V1.11 firmware will also place the EHPE at the time of position logging into the datalog memory. The EHPE value
will be included in the output master data file.
4.3.2.9 DC Wave Capture (Advanced Unit Only)
The "DC Wave Capture (Advanced Unit Only)" section configures the DC fast sampling capability on the Advanced
uDL1 unit. While the uDL1 is in wave capture mode, normal sampling of DC/AC/temperature is suspended (including
interruption tracking measurements). Wave capture mode can be configured to run periodically for a certain duration,
or it may be configured to run continuously. In wave capture mode, DC samples are taken every 100ms.
With firmware v1.11 or higher, it is possible to synchronize the DC wave capture to an offset from a 100ms multiple.
Enable this functionality by checking the box labelled "100ms Sync Offset (0-99ms)'. The offset from 100ms can then
be set by entering the value, in milliseconds, in the box next to the enable check box. As an example, if this feature is
enabled and the offset is set to zero, then DC wave capture samples would start at a whole number multiple of 100ms
and continue every 100ms thereafter.
MOBILTEX® DATA LTD.
Calgary, Alberta
www.corTalk.com
TITLE: uDL1 Configuration and Operation Guide
DOCUMENT NO.:
SHEET:
UDL1-MAN-001
REV:
16 of 26
1.07
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