Cortalk uDL1 Quick guide

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uDL1
Configuration and Operation Guide
Print Date:
August 9, 2018

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RESTRICTED PROPRIETARY INFORMATION
This information disclosed herein is the exclusive property of Mobiltex®Data Ltd. and is not to be disclosed without the
written consent of Mobiltex®Data Ltd. No part of this publication may be reproduced or transmitted in any form or by
any means including electronic storage, reproduction, execution or transmission without the prior written consent of
Mobiltex®Data Ltd. The recipient of this document by its retention and use, agrees to respect the security status of the
information contained herein.
This document is intended for limited circulation.
The information contained in this document is subject to change without notice and should not be construed as a
commitment by Mobiltex®Data Ltd. unless such commitment is expressly given in a covering document. Mobiltex®
and corTalk®are registered trademarks of Mobiltex®Data Ltd.
© Copyright Mobiltex®Data Ltd. (2018). All rights reserved.
CURRENT REVISION APPROVALS (Revision 1.07)
Name
Location
Job Function
Signature
Date
Tony da Costa
Calgary
Engineering Manager
Jerry Chilibecki
Calgary
Director of Engineering
REVISION HISTORY
Rev
Start Date
Approval
Date
Description
Prepared By
Draft
0.01
Sept 26, 2011
First draft.
Tony da Costa
1.00
Oct 14, 2011
Initial release.
Tony da Costa
1.01
Dec 15, 2011
Additional operational descriptions.
Updated screen shots to most recent configuration application version.
Updated accuracy specifications.
Tony da Costa
1.02
July 9, 2012
Updated screen shots to most recent configuration application version.
Added time display description.
Updated pictures of kit contents.
Added limitation statement regarding monitoring of interruption
waveforms.
Added calibration date information.
Added firmware update procedure.
Tony da Costa
1.03
April 10, 2013
Updated driver install procedure for new FTDI driver installer.
Updated software install procedure for new composite uDL1/2 media.
Tony da Costa
1.04
Dec 5, 2013
Updated high-range specifications
Tony da Costa
1.05
Nov 24, 2014
Added information for new features in v1.11 firmware.
Tony da Costa
1.06
Dec 7, 2017
Added clarification on calibration intervals.
Tony da Costa
1.07
Jan 29, 2018
Added G2 hardware information, including new interruption tracking
capability. Updated specifications.
Tony da Costa

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Table of Contents
1Introduction ..............................................................................................................................................................5
2General Safety Information ......................................................................................................................................6
3uDL1 Kit Contents....................................................................................................................................................7
4Configuration............................................................................................................................................................9
4.1 Configuration Equipment Requirements ..........................................................................................................9
4.2 Software Installation.........................................................................................................................................9
4.2.1 Configuration Application Installation ...................................................................................................10
4.2.2 Driver Installation...................................................................................................................................11
4.2.3 Adobe Acrobat Reader XI ......................................................................................................................11
4.3 uDL1 Configuration and Extraction ...............................................................................................................12
4.3.1 uDL1 Communications and Status .........................................................................................................12
4.3.1.1 Read Config From uDL1 ....................................................................................................................12
4.3.1.2 Write Config To uDL1 .......................................................................................................................12
4.3.1.3 Link Status..........................................................................................................................................12
4.3.1.4 Factory Options...................................................................................................................................12
4.3.1.5 Firmware.............................................................................................................................................13
4.3.1.6 Serial#.................................................................................................................................................13
4.3.1.7 Read/Write Config File.......................................................................................................................13
4.3.1.8 Set uDL1 Clock ..................................................................................................................................13
4.3.1.9 Read Faults .........................................................................................................................................13
4.3.1.10 Detailed Status................................................................................................................................13
4.3.1.11 Reboot uDL1 ..................................................................................................................................14
4.3.2 Configuration Group...............................................................................................................................14
4.3.2.1 Timing.................................................................................................................................................14
4.3.2.2 Delayed Start Timing (v1.16+)...........................................................................................................14
4.3.2.3 Interruption Tracking (Advanced G2 Unit Only) ...............................................................................15
4.3.2.4 DC, AC, Temperature Sampling.........................................................................................................15
4.3.2.5 Input Range.........................................................................................................................................16
4.3.2.6 Time Display ......................................................................................................................................16
4.3.2.7 Notes...................................................................................................................................................16
4.3.2.8 GPS (Advanced Unit Only) ................................................................................................................16
4.3.2.9 DC Wave Capture (Advanced Unit Only) ..........................................................................................16
4.3.3 Data Memory Group...............................................................................................................................17
5Operation................................................................................................................................................................21
5.1 Advanced G1 Model Operation for Interruption Surveys...............................................................................23
5.2 Advanced G2 Model Operation for Interruption Surveys...............................................................................23
6Firmware Updates...................................................................................................................................................24
uDL Registration ........................................................................................................................................................25
A. uDL1 Equipment Specifications.........................................................................................................................26

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Figures
Figure 1 uDL1 Micro Data Logger...................................................................................................................................5
Figure 2 uDL1 Installed In a Test Station.........................................................................................................................5
Figure 3 uDL1 Front View ...............................................................................................................................................7
Figure 4 uDL1 USB Cable ...............................................................................................................................................7
Figure 5 uDL1 Analog Cable and Extension Clip Adapters.............................................................................................7
Figure 6 Programming Application and Driver USB Flash Drive....................................................................................8
Figure 7 Large Alligator Clips..........................................................................................................................................8
Figure 8 uDLInstaller Dialog............................................................................................................................................9
Figure 9 uDL1 Configuration Application Installation Dialog.......................................................................................10
Figure 10 uDL1 Configuration Application Installation Complete ................................................................................10
Figure 11 Driver Installation Screen...............................................................................................................................11
Figure 12 uDL1CONFIG Main Screen ..........................................................................................................................12
Figure 13 Faults Dialog..................................................................................................................................................13
Figure 14 Detailed Status Dialog....................................................................................................................................14
Figure 15 Current Shunt Calculator Dialog....................................................................................................................15
Figure 16 Extract To Master Data File Dialog ...............................................................................................................17
Figure 17 Sample Master Data File ................................................................................................................................18
Figure 18 Master Data File Split Utility .........................................................................................................................18
Figure 19 Data Preview Charts Selection.......................................................................................................................19
Figure 20 Sample Data Preview Chart ...........................................................................................................................19
Figure 21 uDL1 Back View............................................................................................................................................21
Figure 22 uDL1 LCD Display ........................................................................................................................................21
Figure 23 uDL1 Front Face ............................................................................................................................................22
Figure 24 uDL1 Firmware Update Application Dialog..................................................................................................24
Figure 25 uDL1 Firmware Update Application Progress ...............................................................................................24

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1Introduction
The uDL1 is a high accuracy, low cost data logger designed specifically for cathodic applications. The device is very
simple to use and has a large LCD that can locally verify the readings. Two models of the uDL1 are available. The
Basic model has a 500,000 readings measurement memory with a configurable sample rate between 1 second and 12
hours. The Advanced model has a 1,000,000 (2,000,000 for G2 hardware revision) readings measurement memory,
internal GPS receiver, and a DC voltage waveform capture mode which samples at rate of 10 times per second. A long
life rechargeable battery allows the device to operate for 6 months or capture 1,000,000 readings per battery charge. The
internal GPS receiver in the Advanced model provides an accurate time reference and site geo-location coordinates.
Both the Basic and Advanced models are capable of measuring DC volts, AC volts and internal temperature. The small
physical size and water resistant (non-submersible) enclosure allow the device to be utilized in a wide range of field
environments including within common CP test stations. The generation 2 (G2) advanced model also supports
interruption waveform tracking for impressed current cathodic protection close interval survey use.
This document details the configuration and operation of the uDL1 product.
Figure 1 uDL1 Micro Data Logger
Figure 2 uDL1 Installed In a Test Station

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2General Safety Information
The following safety precautions must be reviewed to avoid injury and prevent damage to this product or any products
connected to it. To avoid potential hazards, use this product only as specified. If the equipment is used in a manner not
specified by the manufacturer, the protection provided by the equipment may be impaired.
Only qualified personnel should perform service procedures.
While using this product, you may need to access other parts of a larger system. Read the safety sections of the other
component’s manuals for warnings and cautions related to operating the system.
To Avoid Fire or Personal Injury
Connect and Disconnect Properly. Do not connect or disconnect terminal wiring while the wires are connected to a
voltage source.
Observe All Terminal Ratings. To avoid fire or shock hazard, observe all ratings and markings on the product. Consult
the product manual for further ratings information before making connections to the product. Do not use an input marked
with measurement category I for measurements within measurement categories II, III or IV. Do not connect category II
inputs directly to mains—a Class 2 CSA/UL transformer must be used for isolation.
Do Not Operate Without Covers. Do not operate this product with covers or panels removed.
Avoid Exposed Circuitry. Do not touch exposed connections and components when power is present.
Do Not Operate With Suspected Failures. If you suspect there is damage to this product, have it inspected by qualified
service personnel.
Symbols and Terms
Terms in this Manual. These terms may appear in this manual:
WARNING. Warning statements identify conditions or practices that could result in injury or loss of life.
CAUTION. Caution statements identify conditions or practices that could result in damage to this product or other
property.
Terms on the Product. These terms may appear on the product:
DANGER. Danger indicates an injury hazard immediately accessible as you read the marking.
WARNING. Warning indicates an injury hazard not immediately accessible as you read the marking.
CAUTION. Caution indicates a hazard to property including the product.

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3uDL1 Kit Contents
The Mobiltex part number for the Basic uDL1 kit is A20A03UDL01. A20A03UDL02 is the part number for the
Advanced uDL1 kit. The following items are included in each kit:
uDL1 Unit (Basic A15000UDL01 or Advanced A15000UDL02)
Figure 3 uDL1 Front View
uDL1 USB Cable (W164IFUDL01)
Figure 4 uDL1 USB Cable
uDL1 Analog Cable (W164I0UDL01)
Extension Banana Plug To Clip Adapters (H27404UDL01/H27404UDL02)
Figure 5 uDL1 Analog Cable and Extension Clip Adapters

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Programming Application and Driver Media (CD or USB flash drive)
Figure 6 Programming Application and Driver USB Flash Drive
To use a PC to communicate with the uDL1, you will require the media (CD or USB flash drive) that shipped
with the uDL1. The media contains drivers and the uDL1 configuration application. If you do not have the
media, the contents can be downloaded from the Mobiltex web site at the following URL.
http://www.mobiltex.com/cathodic/udl1
The following optional items are available separately:
Large Alligator Clips (H27400112BK/H27400112RD)
Figure 7 Large Alligator Clips

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4Configuration
4.1 Configuration Equipment Requirements
The following items will be needed when configuring a uDL1.
uDL1 USB Cable (W164IFUDL01)
Programming Application and Driver Media (CD or USB flash drive)
To use a PC to communicate with the uDL1, you will require the media (CD or USB flash drive) that shipped
with the uDL1. The media contains drivers and the uDL1 configuration application. If you do not have the
media, the contents can be downloaded from the Mobiltex web site at the following URL.
http://www.mobiltex.com/cathodic/udl1
The installation media contains configuration applications for both the uDL1 and the uDL2.
Personal Computer (PC)
The application software and drivers require that the PC be running Windows XP SP3 or higher for an operating
system. The PC must have an available USB port.
4.2 Software Installation
To install the configuration application and driver software, insert the media (CD or USB flash drive) that came with
the configuration interface into the appropriate drive or USB port on the PC. If “autorun” is enabled on the PC, the
screen in Figure 8 will appear.
If “autorun” is not enabled, or the contents of the media have been copied to a local directory, use Windows Explorer to
navigate to the media drive or the directory containing the installation software. Double-click on the
“uDLINSTALLER.exe” application. The dialog on Figure 8 will appear.
Figure 8 uDLInstaller Dialog

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4.2.1 Configuration Application Installation
Click on the “Install uDL1 Single Channel Data Logger Configuration Application” button to start the application
installer. A security warning dialog may appear. Click the “Run” button to continue.
The following dialog should now appear:
Figure 9 uDL1 Configuration Application Installation Dialog
Follow the instructions presented in the installation screens, clicking “Next” to move to the next screen each time. Some
screens may pause for tens of seconds as the Windows installation procedure is processing. The final screen should
show the dialog in Figure 10. Click “Close” to complete the installation.
Figure 10 uDL1 Configuration Application Installation Complete
A shortcut to theconfiguration application and the uDL1 manual are created in the Windows start menu under the “uDL1
Configuration Application” folder.

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4.2.2 Driver Installation
To prevent potential hardware driver issues in Windows, do not attach the uDL1 to the PC USB port before
installing the device drivers.
From the uDL Installer screen, click the “Install uDL1/2 USB Interface Drivers” button. Note that to install drivers,
you must be logged into the PC with an account that has administrative privileges. The following screen should
display. Follow the installation instructions presented by the driver installer application.
Figure 11 Driver Installation Screen
Once the driver installer completes, you may then plug in the uDL1 through the USB cable into an available USB port
on the PC.
4.2.3 Adobe Acrobat Reader XI
Adobe Acrobat Reader XI is provided on the installation media to allow viewing of the PDF version of the uDL1 manual.
If Acrobat Reader is already installed on the PC, it is not necessary to re-install it. To install Acrobat Reader, click on
the “Install Adobe Acrobat Reader XI” button on the uDL Installer dialog, and follow the instructions provided by the
Acrobat Reader installation application.

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4.3 uDL1 Configuration and Extraction
Attach the supplied USB cable between the PC and the uDL1.
Start the configuration software by clicking on “uDL1 Configuration”shortcut in Windows start menu, under the “uDL1
Configuration Application” folder. The following screen will appear.
Figure 12 uDL1CONFIG Main Screen
4.3.1 uDL1 Communications and Status
4.3.1.1 Read Config From uDL1
The first step in configuring a device is to read in the current settings from the unit. Click on “Read Config From uDL1”.
The “Link Status” field will briefly show “Busy” as the current configuration parameters are read from the uDL1. After
the link status returns to “Idle”, you will see the configuration settings currently in the uDL1. If the uDL1 is not
responding or not connected, an error dialog will pop up. If it is not connected, simply connect the USB cable to the
computer and try again. If the uDL1 LCD display is showing ‘bSY’, wait until ‘USb’ is shown before attempting to
read the configuration from the uDL1.
Once communications have been established with the uDL1, the operational parameters can be configured for the
requirements of a particular measurement session.
4.3.1.2 Write Config To uDL1
Once all configuration items have been set as desired, click the “Write Config to uDL1” button to write the configuration
to the uDL1 and activate it.
4.3.1.3 Link Status
The “Link Status” field will indicate “Disabled”, “Busy” or “Idle”. While “Busy” is shown, the application is actively
communicating with the uDL1 hardware. The application will not respond to further actions while “Busy” is displayed.
The uDL1 can be unplugged at any time from the USB port. However if you have changed any parameters, be sure to
write them to the uDL1 before unplugging the device.
4.3.1.4 Factory Options
The “Factory Options” box will display any factory configured options. A basic uDL1 will show “None”, whereas an
advanced uDL1 will show “GPS TIMESYNC” and “LARGE MEM”.

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4.3.1.5 Firmware
The “Firmware” box will show the firmware version of the uDL1 that was last read.
4.3.1.6 Serial#
The “Serial#” box will show the electronic serial number of the uDL1 that was last read.
4.3.1.7 Read/Write Config File
The “Write Config To File” button may be used to store a copy of the current configuration to a file on the PC. The
configuration may be retrieved by using the “Read Config From File” button. After loading the configuration from a
file, it must still be written to the uDL1 before the changes become effective.
4.3.1.8 Set uDL1 Clock
The “Set uDL1 Clock” is used to set the clock of the uDL1 from the PC clock. Note that in GPS equipped units, the
uDL1 clock will automatically be set from the GPS receiver as soon as a valid GPS time fix is detected.
On basic units, the uDL1 clock should be set at least once before data acquisition is attempted. Beyond that, the clock
should be updated periodically to resynchronize the clock to actual time. The internal clock of the uDL1 basic model
can be expected to drift as much as +/-10s each month. The uDL1 will maintain the real time clock as long as the battery
is not fully depleted.
4.3.1.9 Read Faults
The “Read Faults” button is used to read out any faults that might be present within the uDL1. The information present
in this box should be sent to Mobiltex for analysis when faults are encountered. A history of faults and their associated
time stamps is maintained. To clear the fault history, click the “Clear Fault History” button.
Figure 13 Faults Dialog
4.3.1.10 Detailed Status
The “Detailed Status” button causes a pop-up window to appear. The window includes detailed information about
several items used by the uDL1.
The GPS Status information may be used to diagnose GPS satellite signal reception issues that may prevent time lock
from occurring. Ideally, more than 3 satellites should be in the fix for a reliable lock. The GPS Status information is
only applicable to the advanced model of uDL1.

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Figure 14 Detailed Status Dialog
4.3.1.11 Reboot uDL1
The “Reboot uDL1” is used to restart the uDL1 application.
4.3.2 Configuration Group
All items in the configuration group may be reset back to factory defaults by clicking on the “Defaults” button.
4.3.2.1 Timing
The “Timing” section allows you to select the measurement sampling interval (1 second to 12 hours).
An additional parameter “1s DC Sampling Delay” can be used when DC acquisition is enabled and the sampling interval
is 1 second. This parameter delays the acquisition of a data sample from the top of the second. This could be used when
a signal is expected to transition co-incident with the transition of the second, but there is an associated settling time
with the signal transition. Delaying the sampling past the settling time will then yield a post-transition reading. This
parameter is only useful on advanced uDL1 models. Normally, when not needed, the parameter should be left at the
default value of 100ms to minimize battery consumption during unit operation.
4.3.2.2 Delayed Start Timing (v1.16+)
Starting with version 1.16 firmware, the uDL1 can now be programmed to delay data acquisition start by a programmable
number of minutes. This allows the unit hardware to be deployed days or weeks in advance of a desired measurement
period. The acquisition start delay can be set to a value between 0 and 40320 minutes (28 days). When the analog cable
is plugged into the unit, it will perform its normal first minute of measurement previews and then enter the delayed start

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mode for the programmed number of minutes. While waiting, the LCD display will show ‘hLD’, indicated the unit is
holding for the delay to expire.
4.3.2.3 Interruption Tracking (Advanced G2 Unit Only)
Advanced uDL1 units based on the generation 2 (G2) hardware platform can be programmed to tracking interruption
waveforms typically used with impressed current cathodic protection close interval surveys. When programmed with
interruption cycle parameters matching survey waveform parameters, the uDL1 can measure on and off potentials of
structures relative to a half-cell reference. This mode is enabled by checking the ‘Enable’ option under the interruption
tracking parameter group.
The interruption waveform operation matches the rest of the Mobiltex corTalk RMU line for timing capabilities.
Interruption cycles are always synchronized to the top-of-the-minute. If the ‘On-first Cycle’ option is checked, then the
first measurement take after the top-of-the-minute will be an on measurement. The ‘On-time’ and ‘Off-time’ parameters
should be configured such that the total cycle time divides into 60s as a whole number; if this condition is not met, then
a partial cycle will occur just before the top-of-the-minute. The cycle time is calculated and displayed after the on-time
or off-time is changed and another configuration field is selected. Note that interruption cycle parameters are specified
in millisecond units. Interruption waveform on/off times are limited to a minimum of 200ms each.
To allow for measurements to be made after the potential has stabilized on the structure, two delay parameters are
provided, ‘On->Off Offset’ and ‘Off->On Offset’. The uDL1 will wait the programmed amount of delay after an on-
to-off transition or off-to-on transition before initiating a measurement. Note that there are limitations on the values
programmed for the offsets. The offsets must be less than the waveform on/off times with the unit sampling time taken
into account. For DC measurements, the unit requires 150ms for a sample to be taken. When AC and DC measurements
are enabled, 250ms is required for measurements to complete. For example, with a 1000ms on and 500ms off waveform
and both AC and DC measurements enabled, the off-to-on offset parameter may only be set between 0 and 750ms and
the on-to-off offset parameter may only be set between 0 and 250ms.
Finally, the ‘UTC Offset’ parameter allows the time base of the uDL1 to be skewed by +/-5s relative to actual UTC
time. When using the uDL1 with some other manufacturers’ interruption equipment, it may be necessary to adjust the
time base to match the other manufacturers’ time. When using the uDL1 with Mobiltex corTalk interruption equipment,
this parameter should be set to 0ms.
4.3.2.4 DC, AC, Temperature Sampling
The “DC Sampling”, “AC Sampling, and “Temperature Sampling” sections allow selection of the item(s) you wish to
measure. Scale and offset factors can be entered for DC Volts and AC Volts. Readings may be tagged as volts or amps
by selecting the appropriate radio button in the AC/DC Sampling areas. Temperature readings may be tagged as Celsius
or Fahrenheit by selecting the corresponding radio button in the Temperature Sampling section.
You can enable any combination of DC, AC, or temperature. For example if you wish to only measure DC then check
only the “DC Sampling” box. If you wish to measure both DC and AC then check the “DC Sampling” and “AC
Sampling” boxes.
Note that each measurement reading consumes a memory location. So if you enabled all 3 items with a sample period
every 10 seconds, 3 memory locations would be utilized every 10 seconds.
“Scale Factor” defines the software multiplication that will be given to the reading. This is used in most cases for current
readings taken using a shunt resistor. If a shunt is to read 50mV at 100A, the scaling factor would be 100 / 0.05 = 2000.
A scale factor calculator is provided for use with current shunts. Next to each scale factor entry in the AC and DC
sections is a button labeled “Shunt Calc”. Clicking the button next to the scale factor to be configured brings up the
following dialog box:
Figure 15 Current Shunt Calculator Dialog

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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.

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4.3.3 Data Memory Group
The data memory group is used to extract and preview measurement data.
The “Mem Used” section provides a bar graph of the measurement memory usage within the connected uDL1. The
larger the bar graph, the more memory that is used in the device. The color of the bar graph changes from blue to red as
the memory fills.
The “Extract To Master Data File” button allows extraction of the measurement data from the uDL1 into a CSV file.
Prior to clicking this button, ensure that the desired time format is selected. Data may be extracted in UTC (GMT) time,
or in local time. Local time is based on the time zone selected in the operating system of the computer being used to
extract the data. When the “Extract To Master Data File” button is clicked the following save as screen will prompt the
user for the storage filename.
Figure 16 Extract To Master Data File Dialog
The stored file is saved in a comma separated value (CSV) format that can be imported into spreadsheets (i.e. Excel)
and other applications that support CSV import. Note that older versions of Excel support a maximum of 65,000 lines
so large measurement files may not be completely displayed when using those Excel versions. Excel versions prior to
and including version 2003 will have this limitation.
The CSV file is arranged as indicated in the following Excel screen capture. The first line contains header information
which identifies the contents of each column. Each row contains a time stamped event which can include cable insertion
(unit turned on), cable removal (unit turned off), device battery voltage level, GPS Location (in GPS equipped devices),
number of GPS satellites (in GPS equipped units), DC reading, AC reading, device temperature, user notes, and time-
base lock status.

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Figure 17 Sample Master Data File
The “Master Data File Split Utility” button invokes a utility function that is used to further process the data from the
uDL1 for use in other analysis applications. The function allows a master data file to be split into separate output files
for DC, AC, temperature, and DC wave readings. As well, separate files can be created for different recording sessions.
Click the “Select Source Master File(s)” button to select the master files to be converted. Next, set the output file options
check boxes as required. Finally, click the “Convert” button. The utility function will create the new output files in the
same directory as the source, but with new extensions to the source file name.
Figure 18 Master Data File Split Utility

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Once the data has been extracted, it may be previewed in a chart. Under the “Data Preview Charts” grouping, click the
“DC”, “DC Wave”, “AC”, or “Temperature” buttons to bring up a zoom-able chart of the associated data. For units
capable of interruption tracking, the ‘DC Int.’ and ‘AC Int.’ charts may also be displayed. Note that this function is
intended to provide quick previews of captured measurement data and not intended as a data analysis tool. The PC mouse
can be used to hover over the graph to display the actual values associated with that measurement point. Detailed data
analysis will need to be done using a third party tool such as Excel or specialized data analysis program.
Figure 19 Data Preview Charts Selection
The current chart display may be zoomed in by selecting the “Zoom In” button and then clicking on the chart. Each
click zooms the chart in further. The zoom-in mode may be changed between “X Zoom/Y Auto” and “XY Zoom”. If
“X Zoom/Y Auto” mode is selected, the Y-axis scale is automatically adjusted to the data being displayed. If “XY
Zoom” mode is selected, then both the X and Y-axes are both zoomed in with each click on the chart.
To zoom out, select the “Zoom Out” button and click on the chart. Again, each click zooms out the chart further. If a
view of the entire data set is desired, click on the “Zoom All” button.
When viewing DC Wave capture segments, the currently displayed data segment may be selected by clicking the
‘Previous’, ‘Next’, ‘First’ or ‘Last’ buttons under the ‘Wave Print Segment’ area. These buttons do not appear for other
preview chart types.
The current chart view may be saved to a file. Click the “Save Chart” button to save a bitmap of the chart. The bitmap
may be saved in JPEG, BMP, WBMP, PNG, GIF, SVG or SVGZ formats by selecting the appropriate type in the save
file dialog.
The current chart view may also be printed by clicking the “Print Chart” button.
Figure 20 Sample Data Preview Chart

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The “Read Master Data File” button can be used to load a previously stored measurement file into the data chart memory.
Data charts can be printed and saved.
After the data has been extracted from the uDL1, the data memory on the device may be cleared by clicking the “Clear
Memory” button. Note that clearing memory may take up to 30s to complete.