Operator’s Manual
Decagon Devices, Inc.
Version: December 16, 2015 — 15:02:36
Em50 Series
Decagon Devices, Inc.
2365 NE Hopkins Court
Pullman WA 99163
Phone: 509-332-5600
Fax: 509-332-5158
Website: www.decagon.com
Email: support@decagon.com or sales@decagon.com
Trademarks:
“ECH2O” is a registered trademark of Decagon Devices, Inc.
All Rights Reserved
c
2007-2013 Decagon Devices, Inc.
All Rights Reserved
ii
Em50 Series CONTENTS
Contents
1 Introduction 1
1.1 Customer Support . . . . . . . . . . . . . . . . . . . . 1
1.2 About This Manual . . . . . . . . . . . . . . . . . . . 1
1.3 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.4 Seller’s Liability . . . . . . . . . . . . . . . . . . . . . . 2
2 About the Em50 Logger Series 3
2.1 Em50 Logger Series Overview . . . . . . . . . . . . . . 3
2.2 Specifications . . . . . . . . . . . . . . . . . . . . . . . 4
2.3 Functionality . . . . . . . . . . . . . . . . . . . . . . . 4
2.4 Software . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.5 How the Em50 Stores Data . . . . . . . . . . . . . . . 8
2.6 Compatible Sensors . . . . . . . . . . . . . . . . . . . . 9
3 Setup and Installation 12
3.1 Installing the Batteries . . . . . . . . . . . . . . . . . . 12
3.2 Installing Software . . . . . . . . . . . . . . . . . . . . 13
3.3 Configuring in ECH20 Utility . . . . . . . . . . . . . . 14
3.4 Field Installation . . . . . . . . . . . . . . . . . . . . . 15
4 Software & Configuration 17
4.1 ECH20 Utility . . . . . . . . . . . . . . . . . . . . . . 18
4.2 Common Tasks in ECH20 Utility . . . . . . . . . . . . 19
4.2.1 Configuring the Em50/Em50R/Em50G . . . . 19
4.2.2 Downloading Data when Directly Connected . 20
4.2.3 Other Data Download Options . . . . . . . . . 22
4.2.4 Erasing Data . . . . . . . . . . . . . . . . . . . 22
4.2.5 Instantaneous Measurements (Scan) . . . . . . 23
4.3 ECH20 Utility Menus . . . . . . . . . . . . . . . . . . 24
4.3.1 File Menu . . . . . . . . . . . . . . . . . . . . . 24
4.3.2 Edit Menu . . . . . . . . . . . . . . . . . . . . 24
4.3.3 Data Menu . . . . . . . . . . . . . . . . . . . . 30
4.3.4 Actions Menu . . . . . . . . . . . . . . . . . . . 31
4.3.5 Window Menu . . . . . . . . . . . . . . . . . . 32
4.3.6 Help Menu . . . . . . . . . . . . . . . . . . . . 32
4.4 Em50G WebViewer . . . . . . . . . . . . . . . . . . . . 33
iii
CONTENTS Em50 Series
5 Em50G Cellular Communication 35
5.1 Decagon Data Service . . . . . . . . . . . . . . . . . . 35
5.2 Cellular Service . . . . . . . . . . . . . . . . . . . . . . 35
5.3 Cellular Coverage . . . . . . . . . . . . . . . . . . . . . 36
5.4 Em50G Configuration and Settings . . . . . . . . . . . 36
5.5 Communication Testing . . . . . . . . . . . . . . . . . 38
5.6 Downloading Data . . . . . . . . . . . . . . . . . . . . 40
5.7 Downloading with DataTrac 3 . . . . . . . . . . . . . . 41
6 Em50R Radio Telemetry 46
6.1 Transmit Radio Telemetry . . . . . . . . . . . . . . . . 46
6.1.1 Transmit Radio Modes . . . . . . . . . . . . . . 47
6.1.2 Transmit Best Practices . . . . . . . . . . . . . 48
6.2 Two-Way Radio Telemetry . . . . . . . . . . . . . . . 48
6.2.1 Two-Way Radio Modes . . . . . . . . . . . . . 49
6.2.2 Two-Way Best Practices . . . . . . . . . . . . . 50
6.3 Radio Settings . . . . . . . . . . . . . . . . . . . . . . 50
6.4 Radio Performance . . . . . . . . . . . . . . . . . . . . 51
6.5 Connecting via Rm-1 Radio Modem . . . . . . . . . . 52
6.6 DataStation Networks . . . . . . . . . . . . . . . . . . 54
6.6.1 Configure a DataStation . . . . . . . . . . . . . 54
6.6.2 Communication Test . . . . . . . . . . . . . . . 55
6.7 Download Collected Data . . . . . . . . . . . . . . . . 57
6.8 Data Processing . . . . . . . . . . . . . . . . . . . . . 57
7 Caring for the Em50 58
7.1 Replacing the Batteries . . . . . . . . . . . . . . . . . 58
7.2 Long-Term Maintenance . . . . . . . . . . . . . . . . . 58
7.3 Sending Feedback to Decagon . . . . . . . . . . . . . . 58
8 Troubleshooting 61
9 Declaration of Conformity 67
9.1 Em50 CE Compliance . . . . . . . . . . . . . . . . . . 67
9.2 Em50R/DataStation/Rm-1 CE Compliance . . . . . . 68
9.3 FCC Compliance . . . . . . . . . . . . . . . . . . . . . 68
9.4 Em50G CE Compliance . . . . . . . . . . . . . . . . . 70
10 Em50G User License Agreement 71
iv
Em50 Series 1 INTRODUCTION
1 Introduction
Thank you for choosing Decagon’s Em50 series data loggers. We
designed these data loggers for field research and commercial agriculture. This manual should help you understand the Em50 features
and how to use this device successfully.
Note: Except where specified, all functions and specifications relating
to the Em50 also relate to the Em50R and the Em50G.
1.1 Customer Support
There are several ways to contact Decagon if you ever need assistance with your product, have any questions, or feedback. Decagon
has Customer Service Representatives available to speak with you
Monday through Friday, between 7am and 5pm Pacific time.
Note: If you purchased your logger through a distributor, please contact them for assistance.
Email:
support@decagon.com or sales@decagon.com
Phone:
509-332-5600
Fax:
509-332-5158
If contacting us by email or fax, please include as part of your message your instrument serial number, your name, address, phone, fax
number, and a description of your problem or question.
1.2 About This Manual
Please read these instructions before operating your logger to ensure
that it performs to its full potential.
1
1 INTRODUCTION Em50 Series
1.3 Warranty
The Em50 series of loggers all have a 30-day satisfaction guarantee
and a one-year warranty on parts and labor. Your warranty is automatically validated upon receipt of the instrument.
Note: The one year service plan activates when Decagon ships the
instrument and not at the time of software installation.
1.4 Seller’s Liability
Seller warrants new equipment of its own manufacture against defective workmanship and materials for a period of one year from the
date of receipt of equipment.
Note: We do not consider the results of ordinary wear and tear,
neglect, misuse, or accident as defects.
The Seller’s liability for defective parts shall in no event exceed the
furnishing of replacement parts “freight on board” the factory where
originally manufactured. Material and equipment covered hereby
which is not manufactured by Seller shall be covered only by the
warranty of its manufacturer. Seller shall not be liable to Buyer for
loss, damage or injuries to persons (including death), or to property
or things of whatsoever kind (including, but not without limitation,
loss of anticipated profits), occasioned by or arising out of the installation, operation, use, misuse, nonuse, repair, or replacement of said
material and equipment, or out of the use of any method or process
for which the same may be employed. The use of this equipment constitutes Buyer’s acceptance of the terms set forth in this warranty.
There are no understandings, representations, or warranties of any
kind, express, implied, statutory or otherwise (including, but without limitation, the implied warranties of merchantability and fitness
for a particular purpose), not expressly set forth herein.
2
Em50 Series 2 ABOUT THE EM50 LOGGER SERIES
2 About the Em50 Logger Series
2.1 Em50 Logger Series Overview
The ECH2O System is made of data loggers, sensors, telemetry, and
software that help you measure soil moisture and other environmental parameters accurately and cost effectively. Decagon’s innovative
sensors are the heart of the system and we designed it to be very
easy to use (no programming needed).
The Em50 series loggers are 5-port, self contained data loggers especially suited for field research and commercial agriculture. The Em50
logger series includes three models: the Em50, the Em50R and the
Em50G. These devices are housed in a weather-resistant enclosure,
making them suitable for long-term outdoor operation.
Em50: The Em50 is the basic logger. The communication with
this model is through a Stereo to USB or Stereo to Serial cable to
a PC or mobile handheld device. An integrated solar panel is an
options for the Em50.
Em50R: The Em50R includes a spread-spectrum radio telemetry
module that delivers data to a DataStation. The radio module is
available in long-range 900 MHz. Use the telemetry in energy efficient transmit mode or two-way mode. (Section 6 provides more
information on telemetry.)
Em50G: The Em50G includes a GSM/GPRS (Global System for
Mobile communications/General Packet Radio Service) cellular module to allow environmental measurement data transmission over the
Internet. Decagon partners with a provider of global cellular data
service to make data transmission and maintenance easy and inexpensive. Measurements from the Em50G are sent wirelessly to
Decagon’s Internet server and are available for download using DataTrac 3 software or the Em50G WebViewer. An integrated solar panel
is an option for the Em50G.
Em50 Compatible Sensors: You can use the Em50 to log data
3
2 ABOUT THE EM50 LOGGER SERIES Em50 Series
for almost all of the sensors that Decagon sells (excluding the UMS
and thermal sensors). Please see our website (www.decagon.com) or
our catalog for an up-to-date list of supported sensors.
2.2 Specifications
Input Ports: 5, 12-bit analog, or 32-bit digital
Port Type: 3.5 mm “stereo jack” connector
Data Storage: 1 MB (36,800 scans for all five ports)
Memory Type: Non-volatile flash
Battery Capacity: Five AA Alkaline or Lithium batteries
Enclosure: Weatherproof, impact, and UV-resistant polymer
Enclosure Rating: IP55, NEMA3R
Operating Environment: 60 to −40◦C, up to 100% RH
Communication: Dedicated serial port 3.5 mm stereo jack for use
with the Decagon USB Cable Adapter (UCA)
Radio (Em50R): 900 MHz or 2.4 GHz(discontinued)
Cellular (Em50G): GSM/GPRS cellular technology. Cellular ser-
vice and data hosting service provided by Decagon Devices
2.3 Functionality
Reset Button
All Em50 logger types have a “Reset” button. If your logger does
not respond to connection attempts or does not appear to be working, press the reset button. This reboots the logger and the Status
light turns on momentarily. The internal data storage of the logger
is non-volatile so you do not lose data or settings if you press the
reset button.
4
Em50 Series 2 ABOUT THE EM50 LOGGER SERIES
Em50 Series Status Lights
The green and red lights indicate the current status of your Em50/Em
50G logger and the logger self test function. A short, single blink of
the green light every five seconds indicates the Em50/Em50R/Em50G
is configured to log sensor data. The light does not blink if the logger
measurement interval is set to 0 or “Off.”
The green light blinks slowly on and off to indicate the logger is
connected to a serial port or the cellular module is powered on. The
green light pulses when the Em50G is actively sending data over the
cellular network.
The red light blinks continuously to indicate the logger date and
time are not set correctly. This can happen when the batteries have
been disconnected. You must connect to your Em50 series logger
using any ECH2O System software to reset the logger internal clock.
The logger stops error blinking when the date is reset or after two
minutes have elapsed (to preserve battery power).
Em50 Series Test Button
The Em50 series loggers have a “Test” button to perform basic
functionality testing. When you press the Test button, the logger
performs several checks on internal systems and with the Em50G
attempts a communication session over the cellular network. The
logger uses the lights during the test to indicate connection status.
Pressing the Test button may also reset the logger clock by using
the time of the cellular network if the connected network supports
time information.
Both the green and red lights blink slowly while the Em50G performs tests. Please be patient. It can take as much as 60 seconds or
more to finish the cellular communication tests in the Em50G.
A solid green light indicates that internal tests passed and there is
successful communication over the cellular network to the Decagon
5
2 ABOUT THE EM50 LOGGER SERIES Em50 Series
Data Service. The Em50G leaves the light on for approximately
20 seconds. A solid red light indicates an error in the logger or in
communicating to the Decagon Data Service. Please use the Communication Test feature in ECH2O Utility to find the specific error.
2.4 Software
The Em50 series gives you three software options for working with
your hardware and collected data. Choose one or all to fit your needs.
Download the latest versions of these programs at www.decagon.com/
products/data-management.
Note: See Section 4 for a detailed breakdown of available software
for the Em50 series loggers.
ECH2O Utility: We included the ECH20 Utility software with
your purchase. It provides a simple way to connect to and configure
your loggers. The ECH20 Utility makes downloading and processing
your data fast and easy.
• Connect to Em50 loggers directly.
• Set all logger configuration parameters.
• Make real-time sensor measurements (scan sensors).
• Create Excel or text files with raw or processed data.
• Create configuration and data files for use with DataTrac 3.
DataTrac 3: DataTrac 3 is the premiere Em50 series system software designed to help you organize and visualize your measurement
data. DataTrac 3 transforms endless columns and rows of raw data
into meaningful, easily-interpreted graphs. DataTrac 3 comes with
the Em50 system as a 30-day trial version. If you would like to continue to use DataTrac 3, contact Decagon to purchase a DataTrac 3
registration code. DataTrac 3 provides several features.
• Explore trends and relationships in real time using powerful
charting engines.
• Database and organize data from multiple Em50 series loggers.
6
Em50 Series 2 ABOUT THE EM50 LOGGER SERIES
• Growing Tools combine data streams and track meaningful indicators. For example, plot vapor pressure deficit instead of
just temperature and humidity. Or track growing degree days,
plant available water, pore water EC, etc.
• Use the virtual sensor tool to add desired information. For
example, you can measure precipitation on just one logger and
make that data stream a virtual sensor on every logger at that
site.
• Automatically collect data from your Em50G and Em50R loggers. All data–including manually collected data—is automatically organized and added to your files chronologically.
• Add notes and ideas to the data stream. Comments and re-
minders can help you make sense of a growing season worth of
data later.
• Educate and inform your team efficiently. The DataTrac 3
graphics reduce the time and expertise needed to understand
soil moisture data.
Em50G Webviewer: The Em50G WebViewer is a free web based
application that allows you to remotely download spreadsheets and
view weekly graphs of your data without a DataTrac 3 license. See
Section 4 for more information on the Em50G WebViewer.
Note: You cannot configure your Em50 loggers with the WebViewer,
please see Section 4 for logger configuration information.
Em50 Series Data Logging Scheme
The Em50 does not make sensor measurements until you set a “measurement interval.” You also need to configure the Em50 ports with
the type of sensor plugged into each port. You can set these values
using either ECH2O Utility or DataTrac 3.
Em50 Measurement Interval
The measurement interval controls how often the Em50 records data
7
2 ABOUT THE EM50 LOGGER SERIES Em50 Series
to internal data storage. The interval you choose applies to all five
ports on the Em50. So, it is impossible to have one port measuring
sensors more or less frequently than another port.
The measurement interval works relative to the Em50 internal realtime, 24-hour clock. For example, if you choose a measurement interval of 120 minutes, the Em50 stores data every two hours, on
the hour. The resulting data shows sensor measurements hourly at
12:00 a.m., 2:00 a.m.,..., 10:00 p.m. Choosing a measurement interval greater than 720 results in one set of data stored per day. For
most applications, a measurement interval of 60 or 120 minutes is
appropriate.
Note: Setting the Em50 measurement interval to zero turns off sensor measurement and data storage.
For most sensor types, the Em50 makes a measurement from each
of the five sensor ports every 60 seconds, regardless of the measurement interval value. When the Em50 internal clock reaches the userprogrammed measurement interval, the Em50 stores the average of
all the 60-second sensor readings taken since the last storage interval.
Therefore, if you set the measurement interval to 60, the Em50 stores
an average of the past 60 sensor readings. If you choose an interval of
1,440, the Em50 stores one value that represents the average sensor
value for the entire 24 hour period.
Note: The Em50G supports five minutes as the minimum value for
the measurement interval setting.
2.5 How the Em50 Stores Data
Data Storage Format
Note: The Em50 stores raw data for each sensor. The stored values are not in millivolt units. Please review your individual sensors
operators manual or visit our website (www.decagon.com) for up to
date equations to convert raw data to meaningful sensor values.
8
Em50 Series 2 ABOUT THE EM50 LOGGER SERIES
The Em50 stores data for all five sensor ports for each measurement interval. If no sensor is connected to one or more of the logger
ports, the Em50 stores a “0” for that port.
The Em50 data memory is non-volatile flash. Removing the batteries or performing a system reset does not erase your data.
Removing batteries or resetting the system also resets the clock in
the data logger. To set the clock to the correct time, simply connect
your Em50 to a computer or handheld device running ECH2O software.
Data Storage Size
The Em50 stores more than 36,800 data scans. When the logger
has filled its data memory, it begins overwriting the oldest data in
the memory.
Measurement Span
Depending on the set measurement interval, the Em50 can read for
several weeks to several years before its memory has filled. When
you set up your Em50 using ECH20 Utility, the software displays
how many days of data the Em50 can hold based on the measurement interval that you have chosen. You can determine how many
days of data your Em50 can hold by dividing the size of the data
memory (36,864 scans) by the measurement interval. For example,
an Em50 set on an hourly measurement interval stores 1,500 days, or
about four years, worth of data. An Em50 set to five minutes stores
data for 125 days, or about four months.
2.6 Compatible Sensors
The Em50 logger is only compatible with sensors made by Decagon.
Here is a list of compatible sensors. To learn more about individual
sensors and their respective calibrations, please visit: www.decagon.c
om/calibration.
9
2 ABOUT THE EM50 LOGGER SERIES Em50 Series
Soil Water Content Sensors
10HS, EC-5, GS1 High Frequency Soil Moisture
5TM Soil Moisture and Soil Temperature
5TE, GS3, RS3 Soil Moisture, Soil Temperature, Soil EC
Soil Water Potential Sensor
MPS-2, MPS-6 Water Potential and Temperature Sensor
Leaf Wetness Sensor
LWS Leaf Wetness Sensor
Temperature Sensors
ECT Air Temperature Sensor
RT-1 Rugged Soil Temperature Sensor
Rain Gauges Sensors
ECRN-50 Low Resolution Rain Gauge
ECRN-100 High Resolution Rain Gauge
Electrical Conductivity
ES-2, ES2F Electrical Conductivity and Temperature Sensors
Spectral Reflectance Indices
NDVI-hemi Spectral Reflectance Sensor
NDVI-field stop Spectral Reflectance Sensor
PRI-hemi Spectral Reflectance Sensor
PRI-field stop Spectral Reflectance Sensor
Temperature and Relative Humidity Sensor
EHT Temperature/RH Sensor
VP3 Temperature/RH Sensor
Radiation Sensors
PYR Solar Radiation Sensor
QSO-S PAR Photon Flux Sensor
Wind Sensor
Davis Cup Anemometer
10
Em50 Series 2 ABOUT THE EM50 LOGGER SERIES
DS-2 Sonic Anemometer
Note: The DS-2 Sonic Anemometer only works with those Em50
Series loggers manufactured after January 01, 2013.
Deep Drainage Sensors
G1/G2 Drain Gauge
G3 Drain Gauge
Irrigation Switch
PS-1 Pressure Switch
Water Level Sensors
CTD-5, Water Level, Temperature, Electrical Conductivity
CTD-10, Water Level, Temperature, Electrical Conductivity
CTD, Water Level, Temperature, Electrical Conductivity
Miscellaneous Sensors
ECRN-50 Volume
Millivolt (0 to 3000 mV input)
Millivolt (0 to 1500 mV input)
Pulse Counter
Flow Meter
Discontinued Sensors
EC-10, EC-20 Classic Soil Moisture
EC-TM Soil Moisture and Temperature
ECH2O-TE Soil Moisture, Soil Temperature, Soil EC
MPS-1 Dielectric Water Potential Sensor
11
3 SETUP AND INSTALLATION Em50 Series
3 Setup and Installation
Remember, the one year service plan activates when Decagon ships
the instrument and not at the time of installation.
3.1 Installing the Batteries
Figure 1: Batteries and Indicators
With the exception of the solar-powered Em50 and Em50G, all Em50
series loggers ship with a new set of AA alkaline batteries. Open the
case and install the batteries in the proper orientation as indicated in
the battery locations. After installing the batteries, press the silver
Reset button located directly above the batteries.
Note: Em50/50G solar data loggers come with batteries installed.
Remove battery pull-tab to activate batteries.
Use only NiMH (Nickel-Metal Hydride) batteries with the Em50/50G
Solar option.
Note: Installing or changing the batteries in your Em50 resets the
internal real-time clock. You must connect to your Em50 using any
ECH2O System software to reset the logger clock. If you do not set
the logger clock, the time and date associated with each measurement
record incorrectly.
12
Em50 Series 3 SETUP AND INSTALLATION
Five AA-size Alkaline batteries power the Em50. With the radio
or cellular modules disabled, a set of Alkaline or Lithium batteries
can last for several years. The battery life for Em50Gs and Em50Rs
varies depending on how you set up the transmission. (Section 6.)
Battery power in the Em50R and Em50G can last from six months
to over a year. You can check the battery level status when the
Em50 is connected using any ECH2O software. When the battery
life indicator shows that your Em50 batteries are less than 5%, you
should replace them.
3.2 Installing Software
The ECH20 Utility and DataTrac 3 software (installation USB Drive
attached to the cover of this manual) allows you to collect and manage data from your device.
Note: This manual documents ECH20 Utility. Most tasks that can
be performed using the ECH20 Utility can also be accomplished using
DataTrac 3. For more information about using DataTrac 3, please
refer to the DataTrac 3 Manual.
To install ECH20 Utility, DataTrac 3, or Em50G software, plug the
USB Drive into your computer and wait for it to auto-launch. If it
does not launch, go to My Computer, select the USB Drive, and click
double click on the software file. A driver for the accompanying USB
cable can also be installed at this time.
Occasionally, new versions of ECH2O System software become available on Decagon’s website.
You can find your current software version in the “About” option
of the Help menu in the ECH20 Utility and DataTrac 3. If you are
connected to the Internet, select “Check for Updates” in the Help
menu to see if there is a newer version available.
USB Adapter (UCA) Driver Installation
13
3 SETUP AND INSTALLATION Em50 Series
Your Decagon USB Cable should install automatically. However if
it does not, you must install a driver for the USB Cable Adapter
(UCA) before you can use it to communicate with your logger. You
can find the driver installer on your ECH2O System Software USB
Drive or on Decagon’s website at www.decagon.com/usb.
3.3 Configuring in ECH20 Utility
Before field installation, the Em50 needs to have certain parameters
set, such as name, date, time, measurement interval, and communication mode. The Em50R and the Em50G do not communicate
wirelessly until properly configured. Follow steps 1 through 6 to
configure the logger.
1. Open the ECH20 Utility program.
2. Plug the USB cable (included with your Em50) into the logger
COM port and then the USB port of your computer.
Figure 2: Port Diagram
3. At the top of the screen, select the appropriate COM port
from the “Connect Via” drop-down menu, then click on the
Connect icon. If you are using the USB Cable Adapter, look
for the Connect Via option that includes “Decagon UCA” in
14
Em50 Series 3 SETUP AND INSTALLATION
the COM port name.
Note: If you cannot connect to your Em50, you may need to
install the driver for the USB cable. To download a driver go
to www.decagon.com/usb.
4. Once you have successfully connected, the menus on the main
screen become active.
5. At the device setup screen that appears, click on the various
fields to enter a name for your logger and choose sensor types
for each port.
When using the Em50R, select the radio settings you plan to
use (Section 6). Click “Apply” to save the changes. When
using the EM50G, select your communication configurations
(Section 4).
6. Press the “Disconnect” icon when finished.
3.4 Field Installation
Note: To watch a five minute video on installing soil moisture sensors with an Em50 logger, visit www.decagon.com/install.
The Em50 can serve as a collection station for up to five sensors.
The Em50 is compatible only with sensors made by Decagon such as
the ECH2O water content probes, rain gauge, temperature sensors,
etc. Follow steps 1 through 5 to perform a field installation the Em50
and sensors.
1. If you are using the Em50R or Em50G, perform a telemetry
test to check the wireless signal. If your signal is low or does
not exist, move to an alternative location. (Sometimes only a
few feet away is sufficient.)
2. Install your sensors as directed in their respective Operator’s
Manual.
3. Plug the sensor jack firmly into the Em50 input port.
15
3 SETUP AND INSTALLATION Em50 Series
4. On the top and bottom of the Em50, there are two loopholes.
Use these holes to fasten the Em50 to a mounting post using the
included zip-ties or a similar fastener. Make sure it is installed
in an upright position, with the five input ports underneath.
In this position, rain and spray are shed by the enclosure and
drip off without affecting the contents of the Em50 enclosure.
5. Configure the Em50 using ECH20 Utility or DataTrac 3.
6. Install the Em50/Em50G Solar data loggers in a location that
ensures the solar panel receives the maximum amount of sunlight. In the northern hemisphere, this typically means that
the data logger faces the south. In the southern hemisphere,
this typically means that the data logger face the north.
Cautions:
Never immerse the Em50 in liquids.
Make sure to install the Em50 upright to reduce the possibility of water entering the Em50 enclosure.
Do not install Em50R or Em50G wireless loggers near large
metallic objects, as these can attenuate the radio signal.
16
Em50 Series 4 SOFTWARE & CONFIGURATION
4 Software & Configuration
We designed the Em50 series data loggers to have a simple configuration and no data logger programming. The software packages are
key to the effectiveness and ease of the Em50 Series data loggers.
The software fits a variety of users and allows quick and easy access
to the data logger.
• ECH20 Utility: Use ECH20 Utility for basic data logger con-
figuration and direct connect data download in Excel format.
Customers can use ECH2O Utility on any Windows laptop,
netbook, or desktop computers.
Note: ECH20 Utility cannot download Em50G data from Decag
on Data Service.
• DataTrac 3: Use DataTrac 3 for configuring and organizing
multiple Em50 series loggers. DataTrac 3 database system automatically updates newly downloaded data and creates graphs
of complete data sets from each logger. DataTrac 3 is the premier software for downloading and collecting data from Em50R
or Em50G systems. This software is best if you are interested
in viewing your data on a daily or weekly basis because of the
software ability to automatically append new data collected by
each logger.
• Em50G WebViewer: Use the Em50G WebViewer applica-
tion if you do not have a DataTrac 3 license to remotely download data as Microsoft Excel spreadsheets and view graphs of
your data for the past week through the Decagon Data Service.
Access your Em50G data through the Em50G WebViewer at
www.ech2o.com.
DataTrac 3 has a User Manual available from the support section of
the product page at http://www.decagon.com/products/data-manag
ement/software/datatrac-3/. This chapter details ECH20 Utility and
the Em50G WebViewer.
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4 SOFTWARE & CONFIGURATION Em50 Series
4.1 ECH20 Utility
ECH20 Utility provides a user-friendly interface for configuring and
downloading data from the Em50 logger. After installing the program (Section 3.2), launch it and you should see the Main screen.
Figure 3: ECH2O Utility Main Screen
In the Main Screen, you can set all logger configuration parameters
with visual controls. At the top of the program window is a toolbar
for interacting with the Em50. To the left is a battery indicator.
To the right is the Connect Via menu, where you can select a COM
port, the Connect button (which displays Disconnect when you are
connected to an Em50), the Download button that downloads data
saved on the Em50 onto your computer, and the Scan button, which
scans all of the sensors connected to each port on the Em50 and
returns a real-time reading. This Section covers these functions in
detail.
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Em50 Series 4 SOFTWARE & CONFIGURATION
4.2 Common Tasks in ECH20 Utility
4.2.1 Configuring the Em50/Em50R/Em50G
The Em50 does not require any programming, but it does have several parameters that control identity and function. To change a
parameter, connect to your device, change the parameter, then click
Apply to send the parameter changes to your device.
Name: Each Em50 device should have a unique name. The de-
fault name is the unit serial number. You can change this to any
legal name you want. A legal device name uses upper and lower case
letters, numbers, underscores, and hyphens. Spaces and most punctuation are not legal name characters. ECH20 Utility prevents you
from choosing a name containing illegal characters.
Serial Number: When set in the factory, this is a read-only value.
Measurement Interval: The Em50 and Em50R loggers allow you
to select a measurement interval between 1 and 1,440 minutes while
the Em50G allows you to set a measurement interval between 5 and
1,440 minutes. A measurement interval of zero (0) or “off” stops the
logger from making measurements.
Port Sensor: The Em50 requires you to identify the sensor type
for each of the five sensors.
Cellular Settings: To turn the cellular network of the Em50G
on or off, click the “Configure” button in the “Communication Option” section. The cellular network is active when “Upload data
to ECH2OData.com” box is checked and is off when the box is not
checked. The Em50G is uploading data to the Decagon Data Service
(“on”) by default. See Section 5 for more information on the Em50G.
Choose up to six upload times. Default upload times are: 6-7 AM,
10-11 AM, 1-2 PM, 4-5 PM. To conserve battery power, choose fewer
upload times.
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4 SOFTWARE & CONFIGURATION Em50 Series
Note: The Em50G high data use logger allows you to transmit data
every 15 minutes.
Click Ok after making configuration changes. Click Apply to save
communication settings in your Em50G. Your current settings show
up in the communications option field.
ECH20 Utility helps you evaluate the quality of the cellular connection on your Em50G with the Communication Test feature. Please
see Section 5 for a step-by-step guide to running the Em50G Communication Test.
Radio Settings: Only devices that have a radio module support
these options (Em50R, DataStation). See Section 6: Em50R Radio
Telemetry for more information on using the radio settings.
4.2.2 Downloading Data when Directly Connected
Once you properly configure and install the Em50, it is ready to
begin making and storing sensor measurements. Stored data can be
downloaded from the logger starting at two places in the logger memory. The “Download New” option downloads the data stored since
the last successful download. The “Download All” option downloads
all the data currently stored in the Em50. The “Download” button
on the toolbar corresponds to the Download New option. Any model
of Em50 data logger supports downloading data when directly connected to the logger with ECH2O System software.
Follow steps 1 through 5 to download data.
1. Use the USB cable to connect the Em50 to your computer.
2. Choose “Direct on” the appropriate COM port from the Connect Via drop-down list and press the “Connect” button. If
you encounter connection errors, please see Section 8 or the
ECH20 Utility Help File.
3. Once connected to an Em50, either click the Download button
on the toolbar, or go to the Data Menu and select a download
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Em50 Series 4 SOFTWARE & CONFIGURATION
option as described above.
4. When saving data, the File > Save dialog suggests a name
based on the connected logger name and the time and date.
However, you can enter any name by typing it into the “File
name” field.
5. Choose the file format (Common formats include .xls, .csv, or
.dxd) you prefer then click Save. ECH20 Utility then downloads the data and creates the file.
ECH20 Utility can save your data in several different file formats.
Excel Workbook File (.xls): Converts the raw downloaded measurement data into engineering values appropriate for each sensor
type. The converted data saves to sheet 1 of the workbook and raw
data saves to sheet 2. You can use the raw measurement data to
apply custom calibration to your sensor data.
DataTrac 3 Data File (.dxd): Saves the file in a format that
DataTrac 3 can import. Each .dxd file contains information about
the ECH2O logger settings, identity, and status along with the raw
data for each sensor.
Processed Data Text File (.txt): Converts the raw downloaded
data into engineering values appropriate for each sensor type. Data
are saved as a tab delimited text file.
Raw Data (.csv): Saves the raw data in the form downloaded
from the logger.
Note: The DataTrac 3 file format (.dxd) is a useful way to store data
for later manipulation. Each .dxd file contains information about the
ECH2O logger settings, identity, and status along with the raw data
for each sensor. ECH20 Utility can process a .dxd file into an Excel
file or a processed text file. This allows you to process your raw data
again with different settings or file formats.
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4 SOFTWARE & CONFIGURATION Em50 Series
4.2.3 Other Data Download Options
Decagon designed the Em50R to be part of a wireless sensor network. In this mode, the Em50R transmits measurement data to a
DataStation. You can then download the measurement data from
all the Em50Rs in your network from one location. The communication protocol also confirms delivery of the data and continues to
request data until it receives the complete data package. See Section
6: “Em50R Radio Telemetry” for more information on setting up
logger networks.
We designed the Em50G logger to upload your measurement data
to Decagon Data Service using the cellular network. This makes it
easy for you to use the Internet to download your measurement data
from anywhere in the world. Please see Section 5for more information.
Note: ECH20 Utility uses the default conversion equation for each
sensor when converting raw data to processed data. For more information about the default conversion equations, please see your logger
or sensor manual.
An Em50R supports wireless data downloading. ECH20 Utility can
establish a two-way radio connection between your computer and a
remote Em50R through the Rm-1 Radio Modem. Once you establish this connection, you may download data from the Em50R just
like it is directly connected to the logger. Section 6 provides more
information on setting up two-way wireless communications.
4.2.4 Erasing Data
If you need to erase the data on your Em50, go to Data > Erase
Stored Data. You should erase your data if you change the Em50
configuration settings, such as what type of sensor is in each port.
After selecting the Erase option, it asks if you want to continue.
Click Cancel to return to the program, or Erase Data to continue.
Caution: Activating this feature permanently erases ALL
22
Em50 Series 4 SOFTWARE & CONFIGURATION
stored data.
4.2.5 Instantaneous Measurements (Scan)
ECH20 Utility gives you the ability to take real-time sensor measurements with your Em50 logger. This is most useful as a troubleshooting feature to test if a sensor is reading properly. You can also see
how sensors react to environmental changes. Follow steps 1 and 2 to
take real time measurements.
1. Click the “Scan” button in the toolbar, or go to Actions > Scan
Logger Ports. The Em50 takes a reading on each of the ports,
then displays the Em50 Port Scan screen.
Figure 4: Em50 Port Scan Screen
2. The Port Scan screen displays all five ports should display with
the measurement for each port in the units appropriate for the
sensor. You can change measurement units in the Preferences
Menu (Section 4.3.2). Click the sensor name to see the reading
as raw data.
The five ports should display with the measurement for each port
in the current selected unit. If nothing is plugged in to a port, the
reading for that port is zero.
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4 SOFTWARE & CONFIGURATION Em50 Series
Note: The Em50 does not store data that it measures with the scan
function.
4.3 ECH20 Utility Menus
ECH20 Utility features six menus that allow you to access the program features. These six menus are the File, Edit, Data, Actions,
Window, and Help Menus. Section 4.3 discusses all menu features.
4.3.1 File Menu
Save Settings File: Selecting the “Save Settings File” option from
the File menu creates a data file that contains all of the settings and
information associated with the connected Em50. This feature is
useful for transferring logger configurations between ECH20 Utility
and DataTrac 3. By default, the name of the settings file is the name
of the selected Em50. After naming the file and selecting where it
saves, click Save to create the file.
Convert Data File: ECH20 Utility “processes” or converts raw
ECH2O sensor data to processed data. This feature works by reading .dxd files containing raw data and outputting the processed data
into a different file format (such as .xls or .txt). You can convert
DataTrac 3 data files (.dxd). Only files saved with ECH20 Utility
can be converted to processed files. You can choose to save your
processed files as an Excel file or text file.
4.3.2 Edit Menu
The Preferences window
The Preferences Window is the main feature of the Edit Menu, it
has four tabs for navigation: The Measurements, Data Files, Communications, and Application tabs.
24
Em50 Series 4 SOFTWARE & CONFIGURATION
Figure 5: ECH2O Utility Preferences: Measurements Tab
1. Measurements Tab
The Measurement Units feature is the main function of the Measurement tab. These field entries determine the unit values that
display when you save downloaded data as Excel, processed, or raw
data files. ECH20 Utility supports displaying some measurement
data in multiple units. For example, it allows you to choose degree
Celsius or degree Fahrenheit for temperature sensors.
To set your preferences for measurement units, choose the Measurements tab in the ECH20 Utility Preferences window. Locate the type
of measurement and select a unit from the drop-down menu next to
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4 SOFTWARE & CONFIGURATION Em50 Series
it. Click “Close” to apply the changes.
The Power Noise Filter is the other feature of the Measurements
tab. The AC electrical power in your office or home can add a subtle
amount of noise to the data logger sensor measurements. The logger Power Noise Filter setting is designed to eliminate this electrical
noise that comes from the AC power distribution system. You should
set the value of the Power Noise Filter to match the frequency of the
power cycle where you live. In North America and most of Asia,
this is 60 Hz (the default value). In most of Europe the electrical
frequency is 50 Hz. This feature only needs to be set once, as the
program automatically updates each connected device filter.
2. Data Files Tab
Figure 6: ECH2O Utility Preferences: Data Files Tab
26
Em50 Series 4 SOFTWARE & CONFIGURATION
The Column Headers feature provides a title for each column that
corresponds to the port number, measurement type, and unit. Column headers for saved data files are turned on by default, and apply
only to processed and raw MS Excel data, as well as processed text
data. De-select “Include column headers” to turn off the column
headers for these file types.
You can control the format of date and time values in the Data Files
tab under the section “Date and Time Formatting in Data Files.”
By default, the time and date are formatted using the settings in
the Windows Regional & Language Options control panel. You can
modify this to display the date and time in dd/mm/yyyy format
with either a 12 or 24 hour clock. To change the format, select an
option from the menu, then click Close to apply the changes.
3. Communications Tab
The Communications tab has items that control how the serial communication works between ECH20 Utility and your Em50. Generally you should not adjust these settings unless you are experiencing
problems communicating with your Em50.
27
4 SOFTWARE & CONFIGURATION Em50 Series
Figure 7: ECH2O Utility Preferences: Communications Tab
The Command Retries feature sets the number of automatic retry
commands the ECH20 Utility automatically sends to your Em50
when there are errors. For most circumstances, the default retries
work well. If you experience unreliable communication with your
Em50, you can try increasing the Direct Connect Retries.
The Maximum Baud Rate feature allows you to set the Baud
Rate for Direct Connection. Set a baud rate lower than the default
115,200 baud if you consistently experience serial connection problems.
The Communications Port List enables the “Force find all comm
ports” feature. Use this feature when the USB to serial adapter does
not appear in the Connect Via communication port list. ECH20 Utility is compatible with most USB to Serial adapters. Some models of
28
Em50 Series 4 SOFTWARE & CONFIGURATION
USB to Serial adapters are not found by the serial port enumeration
feature of ECH20 Utility. If your model of USB to Serial adapter
is not recognized, enable Force find all Communication Ports in the
Preferences Menu by going to the Communication tab, and enabling
the check box at the bottom of the screen. Enabling this option may
find other serial ports that are not available for use by the ECH20
Utility (for example, modems installed in your computer).
Note: Enabling the Force find all Communication Ports option may
result in ECH20 Utility finding communication ports that are unavailable for its use.
4. Application Tab
Figure 8: ECH2O Utility Preferences: Applications Tab
The Automatic Internet Version Check instructs ECH20 Utility
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4 SOFTWARE & CONFIGURATION Em50 Series
to automatically check for a newer version using Decagons Internet
version-check engine. When you select this option, while running
ECH20 Utility and connected to the Internet, the software notifies
you when a newer ECH20 Utility version becomes available. You
can turn off the automatic check by unchecking this option. You can
manually check for updates any time using the “Check for ECH20
Utility Updates” option in the Help menu.
Automatic Clock Synchronization keeps the device clock synchronized with your PC clock By default, the ECH20 Utility automatically synchronizes the logger date and time to the time set on
your computer. You can disable this feature by unchecking this option. You can also update the date and time in your logger any time
it is connected by selecting Actions > Set Date/Time.
Selecting the Error Log File option instructs the software to add
more detailed error messages to log files. The ECH20 Utility keeps a
log file of errors and events, but adding more messages to this file is
useful for troubleshooting. Check this option to add more error and
event messages to the error log.
The Date and Time Display in the ECH20 Utility controls
how the EM50 displays the date and time in the toolbar status area.
By default, the time and date use the settings in the Windows Regional & Language Options control panel to determine display. You
can modify this to display the date and time in dd/mm/yyyy format
with either a 12 or 24 hour clock.
4.3.3 Data Menu
The Data menu has four options: Download New Data, Download
All, Report Stored Data, and Erase Stored Data. Please refer to
their respective portions of Section 4 for more information on these
functions.
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Em50 Series 4 SOFTWARE & CONFIGURATION
4.3.4 Actions Menu
Connect/Disconnect performs the same function as the connect/di
sconnect button in the toolbar. It initiates a data communication
connection between your Em50 and your computer. You must first
connect to your Em50 before downloading data.
Other Actions Menu Functions
The Get Settings command retrieves all the port and configuration
settings from your Em50. These settings are automatically collected
when you connect to your Em50. You can use this option to check
to make sure your changes are stored in the Em50.
The Apply Settings feature applies the parameters you changed
to your Em50. This operates just like the Apply button on the
main screen. This option is only available when there are parameter
changes available to send to the Em50.
The Scan Logger Ports option allows you to take readings from
each port independent of the others. See the section “Instantaneous
Measurements” in Section 4 for details and procedures.
Use the Digital Sensor Terminal for SDI-12 addressing and query
of our digital SDI-12 sensors. See the respective manuals for these
sensors for additional information on SDI-12 capabilities.
The Set the Date/Time command instructs the ECH20 Utility
to set the Em50 time and date according to the time and date on
your computer.
Use Communication Test when you connect to the Em50R or
Em50G loggers using ECH20 Utility to see how well the logger wireless communication is working. If the test suggests that you have
a poor connection, you can move to a new location and re-try the
communication tests.
Use List Cellular Carriers for troubleshooting to see which cel-
31
4 SOFTWARE & CONFIGURATION Em50 Series
lular carriers are available within the range of the Em50G logger.
Use the Configure Radio Modem to change the channel and subchannel for your Em50R or DataStation.
The Device Tools submenu contains several items.
The “Test Device Firmware” option determines if you have any
firmware (the internal software that runs the Em50) errors. To
initiate a firmware test, select Actions > Device Tools > Test Device Firmware. This automatically tests the integrity of your Em50
firmware, and report if it reads as Bad or Good.
The “Initialize Radio Module” option resets the radio module to the
default setting. This option applies to Em50Rs and DataStations
only.
The “Initialize Device” option initiates a form of hard reset for your
Em50. ECH20 Utility resets your Em50 and re-writes all the logger
settings. All your measurement data is erased. This option is useful
for troubleshooting a logger that is not working as expected.
Note: Initializing your Em50 deletes all stored data. Make sure any
data has been downloaded out of the Em50 before initiating a reset.
4.3.5 Window Menu
The Window menu contains the “Show Terminal” command. The
terminal window allows you to directly enter commands for your
Em50, and is mainly used for troubleshooting and diagnosis.
4.3.6 Help Menu
The Help menu allows access to the ECH20 Utility help file, allows
you to check for program and firmware updates, and displays information about your copy of the ECH20 Utility.
32
Em50 Series 4 SOFTWARE & CONFIGURATION
The ECH20 Utility Help menu item opens the help file. It contains some of the information found in this manual.
The Send Feedback to Decagon menu item helps you send prod-
uct feedback, bug reports, or feature requests to Decagon. Your
computer must be connected to the Internet for this feature to work.
See Appendix B for more information.
The Check for Utility Updates item checks for the newest available version of the ECH20 Utility. Make sure you are connected to
the Internet, then select Help > Check for ECH20 Utility Updates.
The program checks to see if there is a newer version available. If
there is, it directs you to the web page where you can download it.
To check for a newer version of the ECH20 Utility, choose this menu
item. Checking for updates for the ECH20 Utility uses Decagon’s
version-check web engine. Your computer must be connected to the
Internet for this feature to work.
The Check for Device Firmware Updates menu item is only
available when you are connected to an Em50 (or other ECH2O
device). It compares the firmware version of your Em50 with the
latest version available from Decagon. You can download a firmware
updater when a new version is available. Your computer must be
connected to the Internet for this feature to work.
About the ECH20 Utility opens the About window. You can
see the version of your copy of ECH20 Utility here.
4.4 Em50G WebViewer
The Em50G WebViewer is a web-based application that securely
connects your logger to the Decagon Data Service to download Excel
sheets and display weekly graphs of your data. For more specific
information and assistance, please find the Em50G WebViewer Help
Files by clicking the “Help” link on the WebViewer website.
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4 SOFTWARE & CONFIGURATION Em50 Series
Adding a User
The Em50G WebViewer requires you to either sign in or add an
account. If you have already made an account with the Decagon
Data Service through either the old Em50G downloader or DataTrac3, your account is already set up and you just have to enter
your credentials to sign in to the WebViewer. Otherwise, you must
make an account.
To make an account, begin by clicking on the “Create User” link
below the “Sign in” button. This brings up the Decagon Data Service Registration form. Enter the required information and click on
the “Register” button at the bottom. If all goes well with your registration, you should see a page informing you that your registration
was successful. Click on the “login” link, and you are ready to add
new Em50G loggers to your account.
Add a Subscription
In order to view data from an Em50G, you must first “Subscribe”
to it. You are not limited by the number of Em50G loggers you
can subscribe to. See the Em50G WebViewer Help Files for more
information on subscribing to your data logger.
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Em50 Series 5 EM50G CELLULAR COMMUNICATION
5 Em50G Cellular Communication
The Em50G data logger has a GSM/GPRS cellular module that
enables the logger to upload sensor measurement data to Decagon
Data Service. Your measurement data is available for download directly to your Windows computer at any time, anywhere in the world
where you have Internet access. To extend your service plan contact
Decagon at sales@decagon.com or 509-332-5600.
5.1 Decagon Data Service
The Em50G uses “push” technology to upload measurement and logger status data to the Decagon Data Service at regular daily intervals.
This type of push technology allows the Em50G to keep its cellular
hardware powered off for most of the time allowing long battery life.
The logger uses a unique cryptographic signature and checksum to
protect the integrity of the your data as it is transferred over the
cellular network and Internet as it is uploaded to the Decagon Data
Service.
The Em50G keeps track of the data successfully uploaded to the
Decagon Data Service. If your logger is unable transfer data during
one regularly scheduled session, the data is included in the next upload session.
Once stored in the Decagon Data Service, you can download your
measurement data from the Internet. Downloading data does not
remove it from the Data Service. Decagon safely stores your data for
download at any time.
5.2 Cellular Service
Decagon makes using the cellular network easy by including the first
year of service with the Em50G. Decagon partners with over 200
GSM/GPRS network operators in 120 countries to provide cellular
service all over the globe. We configured your Em50G with an appropriate SIM card for the location where you plan to use your logger.
35
5 EM50G CELLULAR COMMUNICATION Em50 Series
The SIM card and associated service Decagon provides is only for use
with the Em50G as outlined by the usage agreement in Appendix C.
Note: Please check with Decagon before moving an Em50G from one
country to another to make sure your service plan is appropriate for
the new location. To extend your service plan or to troubleshoot your
cellular service, please contact Decagon or the authorized Decagon
Distributor where you purchased your Em50G.
5.3 Cellular Coverage
The Em50G requires GSM/GPRS cellular service to upload measurement data to Decagon Data Service. In the USA, the Em50G with
the 2G modem operates on the T-Mobile network and is not compatible with the Verizon, AT&T, or Sprint networks. The Em50G with
the 3G modem operates on the T-Mobile & AT&T networks and is
not compatible with the Verizon or Sprint networks. Please contact
Decagon for specific questions regarding 2G versus 3G modules in
the Em50G. Outside of the USA, the Em50G should be compatible
with technology used by most cellular carriers.
ECH20 Utility offers a “Communication Test” feature that allows
you to evaluate the quality of the cellular network coverage where
you plan to install the Em50G. This allows you to evaluate the cellular coverage before installing your logger. Repositioning your logger
a short distance may improve your cellular coverage.
For measurement site planning, it may also be useful to consult
the network coverage tools offered by each carrier. Please contact
Decagon for specific questions about the cellular coverage offered by
our partner networks.
5.4 Em50G Configuration and Settings
The Em50G uploads data to Decagon Data Service right out of the
box. To start logging and uploading data, configure your logger
with the type of sensors installed in each port and turn on sensor
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Em50 Series 5 EM50G CELLULAR COMMUNICATION
logging by choosing a measurement interval. The Em50G uploads
data according to the default schedule (uploading between 6-7 AM,
10-11 AM, 1-2 PM, 4-5 PM each day).
Figure 9: Em50G Cellular Configuration Window
Use ECH20 Utility to change these default settings. To turn the
Em50G cellular network on, off, or to change the upload times,
click the “Configure” button in the “Communication Option” section. The cellular network is active when you check the “Upload
data to ECH2OData.com” box and is off when you uncheck the box.
Choose up to six upload times that correspond to the times when
you want to download the most up-to-date sensor data. (Figure 9)
The Em50G uses a random time within the hour to reduce resource
loads on the cellular network and Data Service. To conserve battery
power, choose fewer upload times.
Note: Please contact Decagon if your application requires measuring sensors more often than every five minutes or if you need data
uploads more often than six times a day.
37
5 EM50G CELLULAR COMMUNICATION Em50 Series
Click “OK” after making configuration changes. Click Apply to save
communication settings in your Em50G. Your current settings show
up in the communications option field.
Note: Sensor data recorded by the Em50G while it is configured not
to upload data to the Data Service is stored in the logger, but does not
upload to the Data Service. Turning the upload feature on initiates
uploading data collected on the next measurement interval.
5.5 Communication Testing
ECH20 Utility helps you check the quality of the cellular communication of your Em50G using the Communication Test feature. Open
the Em50G Communication Test dialog by clicking the Test button
or choosing “Communications Test...” in the Actions menu.
38
Em50 Series 5 EM50G CELLULAR COMMUNICATION
Figure 10: Em50G Communication Test Window
The test takes approximately 30 to 60 seconds while the Em50G
establishes a connection with the cellular network and sends test
packets to the Decagon Data Service. Once the tests are finished,
the “Connection Quality” field reports connection quality based on
cellular signal strength and successful packet transfers. After the
initial test is finished, clicking the Test button again updates the cellular signal strength and re-sends test packets. Subsequent tests are
much quicker than the initial test because the Em50G is already connected to the cellular network and the Decagon Data Service. Test
your connection quality again to find the best spot to install your
Em50G. If one test fails, be sure to continue testing until your test
39
5 EM50G CELLULAR COMMUNICATION Em50 Series
returns multiple successes.
Note: The cellular radio is on while the Em50G Cellular Test dialog window is open. Be sure to close the window when you are done
testing to preserve battery power.
If the Em50G Cellular connection quality is poor, try moving your
logger a short distance to improve the signal strength. Also, consider
elevating the antenna by elevating the logger or using an antenna
extension cable to improve signal strength. In some cases it is necessary to use directional antennas to obtain a sufficient cellular signal. Please contact Decagon or your Decagon representative for help
choosing the correct antenna for cellular frequencies at your location.
The Communication Test is checking both the cellular signal strength
and the connection to the Decagon Data Service. If the Data Service
is temporarily unavailable due to Internet problems, the connection
quality reports a failure even if you have strong cellular signal. If your
cellular signal strength is good (above ‘12’), then it is reasonable to
expect good connection quality once the Em50G can re-connect to
the Decagon Data Service.
Note: The measurement data collected by your Em50G is automatically queued for the next successful connection to the Decagon Data
Service. Short term cellular or Internet outages do not impact the
integrity and continuity of your data.
5.6 Downloading Data
You have two options for downloading the Em50G sensor measurement data.
Direct Download
Like all Em50 loggers, the Em50G stores more than 36,800 sensor
readings for each of the five sensor ports. You can use any ECH2O
system software to directly connect to the logger for data download. Your data are always safely stored in non-volatile memory as
40
Em50 Series 5 EM50G CELLULAR COMMUNICATION
a backup in the unlikely event of data loss on your computer. For
downloading instructions when directly connected, see “Downloading Data” in Section 4.
Internet Downloading
The Em50G and Decagon Data Service make downloading your measurement data over the Internet convenient and easy. Use DataTrac
3 to subscribe to data collected by your Em50G. The Em50G WebViewer web application is also designed to download and display
Em50G data.
Note: ECH20 Utility does not connect to the Decagon Data Service
for downloading data over the Internet. You must use either DataTrac 3 or the WebViewer.
You can choose to use either DataTrac 3, or the free Em50G WebViewer web application, depending on your needs. DataTrac 3 can be
installed from the installation USB Drive that came with your logger
manual, or you can install the latest version from www.decagon.com/
support/downloads/. To access the Em50G WebViewer, go to www.e
ch2odata.com/viewer/login/. For more information on accessing and
downloading data from the Em50G WebViewer application, see the
Em50G WebViewer Help Files, found by clicking on the Help link on
the Em50G WebViewer website.
5.7 Downloading with DataTrac 3
When you first launch the DataTrac 3 application, it prompts you
to enter your user contact information as shown on Figure 11.
41
5 EM50G CELLULAR COMMUNICATION Em50 Series
Figure 11: User Configuration Screen Shot
Decagon uses this information to link you to your subscribed Em50G
so that we can provide customer support in the event that your logger is not working correctly. You can update this information at
any time by choosing “User Configuration” from the Settings menu.
Once you have completed the user information, you are ready to add
new subscription information.
In order to download data over the Internet for a specific logger,
you must first “subscribe” to that Em50G logger. You may subscribe to any number of Em50G loggers. Remember that during the
subscription process you must be connected to the Internet. Follow
steps 1 through 5 to subscribe using DataTrac 3.
1. Click Set-up > New and then “Em50 subscription.” The The
Add Subscription Window appears.
42
Em50 Series 5 EM50G CELLULAR COMMUNICATION
Figure 12: Add Subscription Window
2. Enter the unique device ID and password for your Em50G.
You can find this information on the brightly colored card that
came with your Em50G logger. Keep this card in a safe place.
3. Make sure the “Server” option is set to www.ECH2OData.com
(Default).
4. Pick the amount of data you want to include in the first download. If this is the first time you are downloading data from
this logger, you should choose the “All Data Points” option.
If you are only interested in downloading data uploaded over
the last day or last week, choose “Last Day” or “Last Week”
respectively.
5. Click Ok. DataTrac 3 then communicates with the Decagon
Data Service to verify the information you have entered.
Repeat the above steps for each of your Em50G loggers. You can
add new logger subscriptions at any time.
Click the Download button to download any new measurement data
sent by your Em50G loggers since the last time you downloaded.
Data files successfully downloaded for each logger is saved in the
DataTrac 3 auto-import directory (My Documents\ECH2O DataTrac\
AutoImport\). When DataTrac 3 launches, it automatically pro-
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5 EM50G CELLULAR COMMUNICATION Em50 Series
cesses the files in this directory by appending this data to the appropriate logger.
Note: DataTrac 3 lists loggers in the New Devices section by the
logger name when it encounters a logger it has not seen before. Select your Em50G by its name, and choose the Configure button on
the DataTrac toolbar. Set the location information if desired, then
press Ok.
Downloading with Em50G WebViewer
For help on downloading data through the Em50G WebViewer web
application, please refer to the Em50G WebViewer Help Files, located under the Help link on the WebViewer website.
Managing Subscriptions
The DataTrac 3 application attempts to download data from each
logger in the Main window. If you want to stop subscribing from a
logger permanently, select the logger in the list and choose “Delete
Subscription” from the File menu.
The Em50G WebViewer also attempts to download data from each
of the Em50Gs you have subscribed to. For help on unsubscribing
from loggers, see the Em50G WebViewer Help Files, located under
the Help link on the WebViewer website.
Sharing Data
The Em50G and Decagon Data Service also make it easy to share
your measurement data with a colleague or collaborator. You control who has access to specific Em50G data by providing the unique
Device ID and Password pair associated with each logger (found on
the brightly colored card shipped with each Em50G).
Note: You should keep the Em50G Device ID and Password card
in a safe place. Do not leave it inside the Em50G logger case. Only
share the information on the card with people you wish to have access
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Em50 Series 5 EM50G CELLULAR COMMUNICATION
to the data published by your Em50G logger.
There is no limit to the number of people who can subscribe to each
Em50G. Each subscriber either runs their own copy of the DataTrac
3, or uses their own Decagon Data Service account on the Em50G
WebViewer web application. One subscriber data download does not
interfere with another subscriber data download.
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6 EM50R RADIO TELEMETRY Em50 Series
6 Em50R Radio Telemetry
This Section gives you a brief overview of the radio telemetry available in the ECH2O system. This information only applies to Em50R.
The ECH2O system supports two types of radio telemetry: “twoway” mode and “Transmit” mode. Consider one or both types of
radio modes when designing your ECH2O telemetry system. The
“Confirm Delivery Transmit” mode ensures the most complete data
transfer and the best battery life. However, there are some unique
cases where you may want to use the other available modes.
Note: You need either a DataStation or an Rm-1 to utilize the radio
communication capabilities of the Em50R, .
ECH2O telemetry networks require each remote radio logger to have
a unique name. Each logger leaves the factory with the name set to
the logger unique serial number. You can easily change the name of
the logger to help you identify or organize your data. You should not
give two loggers the same name. Two loggers with the same name
interfere with each other when communicating over the radio.
6.1 Transmit Radio Telemetry
The Transmit Radio mode helps you create a simple network of remote radio loggers all transmitting data to a DataStation radio base
station. The DataStation stores data from all the remote loggers
in one convenient place. Typically, you connect a DataStation to
your computer where you can easily download the data for use in
DataTrac 3. Unlike the two-way Radio modes, you cannot remotely
change logger settings when using this mode.
When a logger is in Transmit mode, it only turns on the radio when
it has new data to broadcast. For example, when you set the measurement interval in your logger to 60 minutes, the logger stores your
data every hour and then broadcasts the data to a listening DataStation. The actual transmit time is randomly delayed for several
minutes to prevent two or more radio loggers from interfering with
each other.
46
Em50 Series 6 EM50R RADIO TELEMETRY
The Transmit radio modes use less battery power because the radio
is off most of the time. The Em50R is designed to work approximately 12 months in Transmit mode.
Note: A DataStation is a receiver. It does not cause the remote
logger to send data. If your DataStation is powered off for some
time, itdoes not receive data sent by the remote loggers. However,
the logger stores the missing data for download.
6.1.1 Transmit Radio Modes
Use the Configure button in the Communication Hardware options
to choose one of the following radio modes that support Transmit
communication.
Confirmed Delivery Transmit: This is the recommended mode
since it is the most robust Transmit radio mode. The radio logger
adds a checksum to the data packet before broadcasting the data to
a DataStation. The logger then waits for the DataStation to confirm
it correctly received the data packet. If the logger does not hear the
confirmation, it retries sending the packet again. The logger stops
trying to transmit to a DataStation after 25 attempts.
Transmit Only: This is the original Transmit radio mode. It does
not offer the advantages of the Confirmed Delivery Transmit mode.
You should use the Confirmed Delivery mode when possible. Em5R
(discontinued) loggers only support this Transmit radio mode.
Transmit + two-way and CD Transmit + two-way: These
modes combine the two-way Radio mode and the Transmit Radio
mode. You could use these modes while configuring and testing your
radio network. You should not leave your radio logger in these modes
because they use the most battery power of all the radio modes. Using Transmit + two-way and CD Transmit + two-way radio modes
with the wake interval set to 1 or 2 causes your logger batteries to
drain very rapidly.
47
6 EM50R RADIO TELEMETRY Em50 Series
6.1.2 Transmit Best Practices
Transmit modes are most useful when you have three or more loggers
installed within radio range of each other. There is no set limit to
the number of radio loggers broadcasting to a DataStation. Use this
mode for as few as one logger and as many as 50 or more loggers.
You should use the Telemetry Test feature of ECH20 Utility to test
the connection from your logger to the DataStation.
Note: Em50R loggers must have firmware version 1.12 or later to
enable the Confirmed Delivery Transmit mode and Telemetry Test
feature. Your DataStation must have firmware version 1.09 or later
to receive Confirmed Delivery Transmit mode data packets. Contact
Decagon for an application note that covers the steps needed to upgrade your hardware.
Note: See section on DataStation Networks for step by step instructions for configuring your DataStation and remote radio loggers.
6.2 Two-Way Radio Telemetry
The two-way Telemetry Mode lets you establish a two-way connection with a remote radio logger. Once connected to the remote logger,
you can download data and change most settings just like you were
connected directly to the logger with a serial cable. Communicating with a remote radio logger requires you to have a Rm-1 radio
modem connected to your computer. Connect to the remote radio
logger through the Rm-1.
When a logger is in a two-way Radio Mode, it turns on its radio every
45 seconds. While the radio is on, the logger listens for connection
attempts from a Rm-1. If the logger does not hear any connection
attempts, it turns off the radio. If the logger hears a connection attempt, it leaves the radio on for several seconds listening for login
commands from ECH20 Utility. It takes up to 60 seconds to connect
to the remote logger.
When you are finished interacting with the remote radio logger, you
48
Em50 Series 6 EM50R RADIO TELEMETRY
press the disconnect button. ECH20 Utility sends a logout command
to the remote logger to indicate the end of the communication session. When the remote logger hears the logout command, it waits
for ten minutes before listening for additional connection attempts
via the radio (you can always direct connect to your logger). This
allows you to connect to other loggers with the same radio settings.
Otherwise, the first logger you contacted may reconnect. This would
prevent you from connecting to your other loggers.
The two-way modes generally consume the most power. The Em50R
is designed to work for several months in the two-way modes.
6.2.1 Two-Way Radio Modes
Use the Radio settings section of ECH20 Utility to choose one of the
following radio modes that support two-way communication.
Two-Way 24-hour: The radio logger listens for connection attempts every 45 seconds, 24 hours a day. This mode uses a substantial amount of batter power. Expect batteries to last for approximately 3 months.
two-way 6:00-18:00: The radio logger listens for connection attempts every 45 seconds between 6 AM and 6 PM. The logger does
not use the radio between 6 PM and 6 AM to conserve battery power,
by not listening for connection attempts during the night. Expect
batteries to last for approximately 6 months in this mode.
Transmit + two-way and CD Transmit + two-way: These
modes combine the two-way Radio modes and the Transmit Radio
modes. You could use these modes while configuring and testing your
radio network. You should not leave your radio logger in these modes
because they use the most battery power of all the radio modes. Expect batteries to last for approximately three months in this mode.
Note: Using Transmit + two-way and CD Transmit + two-way radio
modes with the wake interval set to 1 or 2 can cause the batteries of
your logger to drain very rapidly.
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6 EM50R RADIO TELEMETRY Em50 Series
6.2.2 Two-Way Best Practices
Two-way modes is most useful when you have a small number (one,
two, or three) of remote radio loggers you wish to contact. If you
have three or more loggers installed within radio range of each other,
consider using one of the Transmit modes. The two-way modes also
allow you to mount an Rm-1 in your vehicle and interact with the
remote logger while in radio range.
See section on Connecting via a Radio Modem for step by step instructions for establishing a two-way connection with a remote radio
logger.
6.3 Radio Settings
For two radio devices to communicate they must share the same radio
settings. An Rm-1 radio modem can only connect to a remote radio
logger with the same radio settings. A DataStation only receives
data from loggers with the same radio settings as the DataStation.
Set the Radio Channel to the same value for all the devices on the
same network. Set the Radio Subchannel to the same value for all
the devices on the statement network.
Radio logger networks with different values set for the Radio Channel
use different frequency-hopping sequences, and therefore experience
minimal interference between groups. Radio logger networks with
the same Radio Channel value but different Radio subchannel values
can interfere with each other, but cannot communicate with each
other. This interference can also cause additional battery drain in
the radio logger.
The default values for Radio Channel and Subchannel are zero. Use
ECH20 Utility to choose other values.
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Em50 Series 6 EM50R RADIO TELEMETRY
6.4 Radio Performance
The maximum range of the radio modules in the radio logger and
DataStation are affected by the environment, installation method,
and antenna choice. Maximizing the range of your radio network
requires you to consider these factors.
Buildings, hills, vegetation, vehicles, and other environmental obstructions sometimes shorten the radio range, sometimes drastically.
You should ensure a clear, open path between radio devices. Also,
radio frequency, or RF, interference in the environment around the
radio can reduce the usable range (even if not using the same radio
frequencies). You should consider nearby growing vegetation when
designing and testing your radio network. Some radio networks work
fine when the vegetation is sparse, yet may fail when vegetation is
full.
You can increase the effective transmit range by maximizing the
above ground height of the radio antenna. This helps ensure a clear
path for the radio signals and reduces the amount of signal absorbed
by the earth. Use an antenna extension cable to help position your
antenna when it is not practical to install the logger higher off the
ground. If you mount the radio logger to a metal pole, you should
mount the antenna to the top of the metal pole so it is free to radiate
the signal above the pole.
Replacing the stock antenna on your radio device with a high gain
antenna can greatly increase the radio range. Consider using a directional Yagi antenna or a high-gain omni-directional antenna when
you want to extend the range of your radio network. A high-gain
antenna can also help overcome the effects of unavoidable environmental obstructions.
The ECH2O telemetry system also supports a simple relay for use
with Transmit Mode networks. Combining a relay and high-gain antennas allows radio devices to communicate over very long distances.
Contact Decagon for more information on using a relay in your radio
network.
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6 EM50R RADIO TELEMETRY Em50 Series
6.5 Connecting via Rm-1 Radio Modem
Connecting to an Em50R via a Rm-1 is different than connecting
via your USB cable. Keep notes concerning the Em50R name and
radio settings to make the rest of the system configuration easier to
accomplish.
Before you can use the telemetry options of your Em50R, you must
configure the Em50R by connecting it directly to your computer using your USB cable. Connect using ECH20 Utility or DataTrac 3
and set the Em50R Channel, Subchannel, and Radio Mode. See
the section on Configuring in ECH20 Utility for additional information on configuring the Em50 series loggers. The Channel can be
set from 0 to 6 inclusive (default is 0). The Subchannel can be set
from 0 to 65534 inclusive (default is 0). To use the radio logger with
an Rm-1, the Radio Mode has to be set to one of the two-way modes.
If you choose the two-way 6:00-18:00 mode, then connection via the
Rm-1 can only take place between the hours of 6:00 AM through 6:00
PM. We designed this mode was designed to improve battery life by
not keeping the radio on constantly. The other two-way modes can
be connected to 24 hours a day.
After setting the Radio Mode, click the Apply button in ECH20
Utility. Disconnect from the Em50R logger. Now, connect your
computer to the Rm-1 by using a standard 9-pin serial cable. (A
USB version of the Rm-1 is also available.)
Choose the correct communication port in the Connect Via dropdown menu. For example, if your Rm-1 is physically connected to
your computers COM1 communication port, you would choose “Rm1 on COM1 Communication Port” in the Connect Via menu. Click
the “Connect” button.
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Em50 Series 6 EM50R RADIO TELEMETRY
Figure 13: Logger Query Configuration
The Logger Query Configuration form appears. To connect to a specific Em50R, type the logger Name, Channel, and Subchannel. After
typing the name, click the Query button. If you want to connect to
any available Em50R, pick the correct Channel and Subchannel, but
leave the Name field blank.
Note: To connect to a radio logger, the radio Channel setting must
be the same for both the logger and the Rm-1. The radio Subchannel
setting must also be the same for both the logger and the Rm-1.
The Connection Progress screen appears as ECH20 Utility tries to
establish a radio connection with the remote logger through the Rm-
1. The connection process can take up to 60 seconds while ECH20
Utility sends a logger “wake up” signal and retries the connection
attempt.
When ECH20 Utility connects to a remote radio logger, it shows
the signal strength of the connection with the radio signal strength
icon on the status bar. Click on the radio signal strength icon to
53
6 EM50R RADIO TELEMETRY Em50 Series
see the signal strength percent in the message area. See Section 8if
ECH20 Utility fails to connect to your remote logger.
Once ECH20 Utility establishes a two-way radio connection with
a remote logger, you can interact with the logger just like a direct
connection.
Note: You cannot change the radio Channel or radio Subchannel
settings in the remote logger while connected via the Rm-1.
6.6 DataStation Networks
6.6.1 Configure a DataStation
After establishing a connection, set the Channel and Subchannel. Set
the Channel from 0 to 6 inclusive (default is 0) and the Subchannel
from 0 to 65534 inclusive (default is 0).
Notice the chosen Channel and Subchannel settings. Click the Apply button to save the settings to the DataStation. For easy data
downloading and telemetry testing, leave the DataStation plugged
into your computer and your powered at all times.
Configure an Em50R Logger for use with the DataStation To use
one or more Em50R loggers with a DataStation the Radio Mode has
to be set to one of the Transmit modes. We recommend the “Confirm Delivery” transmit mode.
Connect the Em50R to your computer or handheld device using the
appropriate cable. Start ECH20 Utility, ECH20 Utility Mobile or
DataTrac. Once you are connected, set the radio Channel and Subchannel settings to exactly the values chosen for the DataStation
previously. Set the Radio Mode to Confirmed Delivery Transmit.
This mode provides a method for confirming the delivery of the data
which greatly increases the ability of the system to successfully transfer the data. The Transmit + two-way modes are there for use as
troubleshooting aids. Set the measurement interval and pick the sensors that are plugged into each port. See the section on Configuring
54
Em50 Series 6 EM50R RADIO TELEMETRY
in ECH20 Utility for additional details on configuring the Em50 series. After setting the Radio Mode, click the Apply button.
Note: ECH20 Utility only shows the radio modes compatible with
your radio logger model and firmware version. If you do not see the
“Confirmed Delivery Transmit” radio mode option, then your radio
logger may not support this option. If you are using an Em50R logger
you may need to update the firmware to version 1.12 or newer. Visit
www.decagon.com/usb for the most current firmware and software
modes.
6.6.2 Communication Test
Before finding a permanent location for your Em50R, perform a communication test to verify the quality of the radio communication.
Make sure to properly configure and power the DataStation during
your communication test.
In your field area, connect your Em50R to either a laptop or handheld
device using the appropriate cable and press connect. Ensure that
your radio channel, Subchannel, and transmit mode are the same as
your DataStation. Choose “Communication Test” from the Actions
menu.(Figure 14)
55
6 EM50R RADIO TELEMETRY Em50 Series
Figure 14: Em50R Communication Test Window
Click the Test button and the test begins. When the test has finished
it presents the results of the test. Five stars signifies excellent communication. One star means that all of your data is transmitting,
but multiple tries are necessary. The more attempts to send data
leads to more power consumption. One star is adequate for data
transmission, but decreases battery life.
You may have to relocate the radio logger while doing the Telemetry
Test in order to find the best connection quality. Once you have
found the radio logger location that provides the best connection
quality, install the radio logger at that location.
Note: Communication Test only works with Em50 loggers running
firmware 1.12 or newer.
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Em50 Series 6 EM50R RADIO TELEMETRY
6.7 Download Collected Data
After you configure the DataStation, it automatically collects data
from those Em50R loggers that are within range and share the same
Channel and Subchannel. After collecting data, you can retrieve it
for permanent storage and analysis. DataTrac 3 is best suited for
this application.
To download and view data from the DataStation, start DataTrac.
In the DataTrac 3 menu, pick the DataStation you want to connect
to and click “connect.” Click the “Download New Data” button.
The Downloading DataStation Data screen appears and provides a
progress bar displaying the download progress.
6.8 Data Processing
DataTrac 3 automatically sorts the data collected by the DataStation
and associates the data with the correct logger. However, unless you
used DataTrac 3 to also configure your Em50R loggers, DataTrac 3
does not know your logger name and which sensors are plugged into
each port. To add this information to your data set, click on the
appropriate Em50R in the logger tree and select “Configure.”
If DataTrac 3 is not an option, you can use ECH20 Utility to retrieve data from your DataStation. ECH20 Utility gives you several
choices for the file type when downloading data from a DataStation.
Section 4 has more information on using ECH20 Utility for downloading data.
If you choose processed or raw data file formats, ECH20 Utility walks
you through processing the data for each active logger. The ECH2O
Utility prompts you for the logger type and sensor types for each
logger. This information is necessary for ECH20 Utility to process
the data correctly.
57
7 CARING FOR THE EM50 Em50 Series
7 Caring for the Em50
7.1 Replacing the Batteries
The Em50 requires little maintenance, if you install it correctly. The
primary maintenance issue is that batteries must be replaced when
their charge becomes too low. When the battery life indicator in
ECH20 Utility shows your Em50 batteries are less than 5%, you
need to replace them to continue logging and transmitting data. Use
only NiMH (Nickel-Metal Hydride) batteries with the Em50/Em50G
Solar loggers.
Note: Installing or changing the batteries in your Em50 resets the
internal real-time clock. You must connect to your Em50 using any
ECH2O system software to reset the logger clock immediately after
changing the batteries. Set the logger clock to ensure the recorded
measurement time and date remain correct.
7.2 Long-Term Maintenance
When caring for the Em50 over an extended period of time, be sure
to check the logger periodically.
• Check the battery holders and make sure they are clean and
free of corrosion.
• Check that the sensor ports are clean, and that the sensors are
making good contact with the ports.
• Check case gaskets and sensor cable strain relief.
• Check or replace any zip ties securing the logger annually.
7.3 Sending Feedback to Decagon
Decagon Software makes it easy to send feedback, bug reports, and
feature requests to Decagon or your Decagon Distributor. Choose
“Send Feedback to Decagon...” from the help menu.
58
Em50 Series 7 CARING FOR THE EM50
Figure 15: Send Feedback to Decagon Window
In the Send Feedback to Decagon menu, enter your name, company
name, and other contact information. Tell us what type of feedback you are sending (General Feedback, Feature Suggestions, Bug
Report, or Other). Indicate how you want us to respond to your
feedback (Email or Telephone).
Use the description area to give details for your feedback. If you
are reporting a bug, it is very helpful for you to tell us what steps
you took for the bug to happen and any error message you saw. By
default, bug reports also include the software error files.
59
7 CARING FOR THE EM50 Em50 Series
You can send Decagon a file using this form too. This is useful
for sending data files that you have questions about. If you work
directly with a Decagon representative, put their Email address in
the field at the bottom of the form. This sends the contents of the
form to them. Your Decagon representative can follow-up with you
directly.
60
Em50 Series 8 TROUBLESHOOTING
8 Troubleshooting
Although Decagon designed the Em50 for durability and built to the
highest manufacturing standards, problems may occasionally occur.
This Troubleshooting Section details the major problems that you
may encounter and their solutions. If you have a problem that this
troubleshooting guide does not cover, then contact Decagon by email
at support@decagon.com or call us at at 509-332-5600.
Table 1: Troubleshooting Quick Guide
If this problem occurs: Refer to:
COM Port is already in use Problem #1
USB adapter not showing COM port Problem #2
ECH20 Utility cannot connect to device Problem #3
ECH20 Utility loses connection Problem #4
Radio Modem not responding Problem #5
Does not connect while using Rm-1 Problem #6
ECH20 Utility losing connection to my device Problem #7
ECH20 Utility reports no new data for downloading
Problem #8
Sensor data shows “* * *” in the Scan window Problem #9
Sensor data does not seem correct Problem #10
Logger stops taking measurements Problem #11
Logger does not work correctly or reliably Problem #12
Troubleshooting Serial Ports
1. PROBLEM:
The ECH20 Utility tells me the communication port I want to use is
in use by another application, but I do not think any other programs
are running.
SOLUTION:
Some PDA synchronization programs monitor serial communication
ports. Disable Microsoft’s ActiveSync or Palm’s HotSync system
software while trying to use the serial port with the ECH20 Utility.
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8 TROUBLESHOOTING Em50 Series
2. PROBLEM:
My USB to Serial adapter is not showing in the communication port
picker.
SOLUTION:
Enable “Force find all Communication Ports” in the Preferences
menu by going to the Edit menu, clicking Preferences, then the Communication tab, and enabling the check box at the bottom of the
screen. Enabling this option may find other serial ports that are
not available for use by the ECH20 Utility (for example, modems
installed in your computer).
Troubleshooting Direct Connection
3. PROBLEM:
ECH20 Utility tells me it cannot connect to my device.
SOLUTION:
Try one or more of the following three suggestions to make sure
there is a connection to the ECH2O device.
1. If you are using the accompanying USB cable, download the
USB driver from www.decagon.com/usb. Check your serial
port choice. Make sure the Connect Via drop-down menu shows
the name of the COM port you are using to physically connect
to your logger or DataStation. For example, if our logger is
physically connected to COM1, the Connect Via control should
be set to “Direct on COM1 Communication Port” or “Direct
on COM3 Decagon VCA”
2. Check that your serial cable is securely plugged into your logger
or DataStation and your Computer.
3. Make sure your logger has good batteries or your DataStation
is plugged in. Try pressing the reset button on your logger or
DataStation.
Note: Serial and USB Cables can fail. If you suspect your cable may
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Em50 Series 8 TROUBLESHOOTING
be the problem, try connecting to a second logger. If you can connect, the problem is probably the first logger. If you cannot connect
to the second logger either, the problem may be your cable. Try using
a spare Decagon Serial Cable Adapter or the USB cable if you are
having trouble connecting to a logger.
4. PROBLEM:
ECH20 Utility keeps reporting it lost the connection to my device.
SOLUTION:
This rarely happens for a direct connection. Please check or replace
your serial or USB cables. You can also increase the number of times
ECH20 Utility tries sending commands to the logger or DataStation.
Increase the Direct Connect Retries on the Communication tab of
the Preferences form.
Troubleshooting Radio Connections
5. PROBLEM:
ECH20 Utility tells me my radio modem is not responding.
SOLUTION:
Make sure your serial cable is securely attached to your computer
and your Rm-1. Your Rm-1 should have power and be turned on.
6. PROBLEM:
ECH20 Utility tells me it cannot connect to my radio logger when I
use an Rm-1.
SOLUTION:
Try one or more of the following to make sure there is a good radio
connection to your remote logger:
1. Make sure your DataStation and Em50R have the same Channel and Subchannel and that the DataStation is being continuously powered.
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8 TROUBLESHOOTING Em50 Series
2. Make sure you are within radio range of the remote logger by
performing a telemetry test. If this is the problem, increase the
radio signal strength to your logger by moving closer to your
logger or using a high-gain antenna to see if you can establish
a radio connection.
3. Make sure the antenna on the logger and the Rm-1 are securely
fastened to the radio module.
4. Check the Radio Channel and the Radio Subchannel settings
you are using on your remote loggers and Rm-1. See Section
6, Connecting via a Radio Modem, for how to configure your
radio settings.
5. Make sure you wait ten minutes between connection attempts
for the same logger. If you just disconnected from a logger,
you must wait for ten minutes before that logger accepts radio
connections (you can always direct connect to your logger).
6. Make sure your logger has good batteries. Try pressing the
reset button on your logger.
7. PROBLEM:
ECH20 Utility keeps reporting it lost the connection to my device.
SOLUTION:
This can happen when the radio connection is lost. Try increasing the radio signal strength by moving closer to the remote logger
or using a high-gain antenna. You can also increase the number of
times ECH20 Utility tries sending commands to the logger. Increase
the Radio Connect Retries in the Communications tab on the Preferences form.
Troubleshooting Data Issues
8. PROBLEM:
ECH20 Utility tells me there is no new data for downloading.
SOLUTION:
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Em50 Series 8 TROUBLESHOOTING
Make sure the logger is configured to measure data. Make sure the
measurement interval is set to a number greater than zero. Try pressing the reset button if the logger does have a non-zero measurement
interval.
9. PROBLEM:
My sensor data shows “* * *” in the Scan window.
SOLUTION:
The three asterisks mean the raw data measured by the logger is
out of expected range for the sensor. This could be caused by a
broken sensor. Make sure the sensor is fully inserted into the logger
sensor port. Make sure the sensor type shown in the Scan window
matches the sensor actually connected to your logger.
10. PROBLEM:
My sensor data does not seem to be correct.
SOLUTION:
There are many issues that affect the quality of the sensor measurement. Please see the user manual of your particular sensor for help
troubleshooting the data collected by your sensor or contact Decagon
by phone at 509-332-5600 or by email at support@Decagon.com.
Troubleshooting Logger Issues
11. PROBLEM:
My logger stopped making measurements.
SOLUTION:
Make sure the measurement interval is not set to 0. The Em50
does not make any measurements when the measurement interval is
set to zero.
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8 TROUBLESHOOTING Em50 Series
Try pushing the reset button or initializing your Em50 if a reset
is not enough to get the logger measuring sensors again. Connect to
the logger and choose “Initialize Device...” from the Device Tools
sub-menu in the Actions menu. Initializing your Em50 erases any
stored data so you should download any data you want to keep before choosing this option.
12. PROBLEM:
My logger does not seem to be working correctly or reliably.
SOLUTION:
Try pressing the reset button on the logger. This resets the logger firmware. You can also try connecting to the logger and testing
the integrity of the firmware. Choose Test Device Firmware from the
Device Tools menu of the Actions menu. Contact Decagon for help
reloading the firmware if ECH20 Utility reports the device firmware
is corrupt. If the firmware tests good and your logger is still not
working correctly, please contact Decagon for repair or replacement.
66
Em50 Series 9 DECLARATION OF CONFORMITY
9 Declaration of Conformity
9.1 Em50 CE Compliance
Application of Council Directive: 2004/108/EC and 2011/65/EU
Standards to which conformity is
declared:
EN 61326-1:2013 and
EN 50581:2012
Manufacturer’s Name: Decagon Devices, Inc 2365 NE
Hopkins Ct. Pullman, WA 99163
USA
Type of Equipment: Data collection system
Model Number: Em50
Year of First Manufacture: 2002
This is to certify that the Em50, manufactured by Decagon Devices,
Inc., a corporation based in Pullman, Washington, USA meets or exceeds the standards for CE compliance as per the Council Directives
noted above. All instruments are built at the factory at Decagon and
pertinent testing documentation is freely available for verification.
67
9 DECLARATION OF CONFORMITY Em50 Series
9.2 Em50R/DataStation/Rm-1 CE Compliance
Application of Council Directive: 89/336/EEC
Standards to which conformity is
declared:
EN61326 : 1998 and EN55022 :
1998
Manufacturer’s Name: Decagon Devices, Inc 2365 NE
Hopkins Ct. Pullman, WA 99163
USA
Type of Equipment: Data Collection System
Model Number: Em50R 2.4 GHz, Rm-1 2.4GHz,
and DataStation 2.4 GHz
Year of First Manufacture: 2002
Restrictions:
France: Current regulations in France stipulate that these devices
may be used indoors only. Outdoor use on private property is subject
to authorization from the French Telecommunications Regulatory
Authority. Outdoor use on public property is currently prohibited.
For more information, see www.ero.dk.
9.3 FCC Compliance
The following FCC statement applies to the Em50, Em50R, Em50G,
DataStation, and Rm-1. This device complies with part 15 of the
FCC Rules. Operation is subject to the following conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received, including
interference that may cause undesired operation.
68
Em50 Series 9 DECLARATION OF CONFORMITY
The Em50R, DataStation, and Rm-1 contain one of the following
modules:
• FCC ID: OUR9XSTREAM IC: 4214A-9XSTREAM
• FCC ID: OUR-24XSTREAM IC: 4214A 12008
The Em50G contains the following module:
• FCC ID: IHDT56HQ1 IC: 109O-HQ1
Information for users:
Changes or modifications to the EM50 series loggers not expressly
approved by Decagon Devices, Inc. could void FCC compliance and
thus the user’s authority to operate the equipment.
This equipment has been tested and found to comply with the limits
for a Class B digital device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment
generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause
harmful interference to radio communications.
There is no guarantee that a particular installation. If this equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, we
encourage users to attempt to correct the interference by trying one
or more of the following measures.
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from
that to which the receiver is connected.
• Consult Decagon Devices or your local representative for support.
69
9 DECLARATION OF CONFORMITY Em50 Series
9.4 Em50G CE Compliance
Application of Council Directive: 2004/108/EC
Standards to which conformity is
declared:
EN61326-1:2013 and 2011/65/EU
Manufacturer’s Name: Decagon Devices, Inc 2365 NE
Hopkins Ct. Pullman, WA 99163
USA
Type of Equipment: Data Collection System
Model Number: Em50G
Year of First Manufacture: 2010
Cellular Module Information
The Quad-band GSM/GPRS cellular module in the Em50G has been
tested and approved under the standards and regulations listed below:
• FCC part 12,22,24. FCC ID: IHDT56HQ1
• Industry Canada (IC) 109O-HQ1
• R&TTE - LVD 2006/95/EC Standards: EN301 489-1 & 7,
EN60950
• EU Product Approval Number: G24-L
• GCF 3.27.1
• NAPRD 3.14.0
• PTCRB
70
Em50 Series 10 EM50G USER LICENSE AGREEMENT
10 Em50G User License Agreement
Contract Formation
These terms and conditions govern the use of the Em50G (“Device”).
Please read these terms and conditions carefully. If you use or activate the equipment you agree to be bound by these terms and
conditions. If you do not accept and agree to be legally bound by
these terms and conditions, please do not use the equipment. If you
choose not to accept these terms and conditions you may return the
Em50G along with all original packaging and accessories for a refund
of the purchase price less the cost of shipping and handling.
Wireless Connectivity
Decagon provides wireless connectivity for your Em50G for uploading
of measurement data and logger status information under a reseller
licensing agreement. We charge a fee for wireless connectivity for
your use of wireless services on your Device. Decagon reserves the
right to discontinue wireless connectivity at any time or to otherwise
change the terms for wireless connectivity at any time, including, but
not limited to (a) limiting the frequency and amount of data that
may be transferred using wireless connectivity and (b) changing the
amount and terms applicable for wireless connectivity charges.
Coverage and Service Interruptions
You acknowledge that if your Device is located in any area without
applicable wireless connectivity, you may not be able to use some or
all elements of the wireless services. Decagon is not responsible for
the unavailability of wireless service or any interruptions of wireless
connectivity.
Your Conduct
You agree to use the wireless connectivity provided by Decagon only
in connection with services Decagon provides for the Em50G. You
may not use the wireless connectivity for any other purpose. Unless
71
10 EM50G USER LICENSE AGREEMENT Em50 Series
specifically indicated otherwise, you may not sell, rent, lease, distribute, broadcast, sublicense or otherwise assign any rights to wireless services. You may use the Em50G Software only on the Em50G.
You may not sell, rent, lease, lend, distribute or sublicense or otherwise assign any rights to the Software in whole or in part. You may
not encourage, assist or authorize any other person to, modify, reverse engineer, decompile or disassemble the Em50G or the Software,
whether in whole or in part, create any derivative works from or of
the Software, or bypass, modify, defeat or tamper with or circumvent
any of the functions or protections of the Em50G or Software.
Automatic Updates
In order to keep your Software up-to-date, Decagon may automatically provide your device with updates and upgrades to the Software.
Export Regulations
You agree to comply with all export and re-export restrictions and
regulations of the Department of Commerce and other United States
agencies and authorities, and not to transfer, or encourage, assist
or authorize the transfer of the Software to a prohibited country or
otherwise in violation of any such restrictions or regulations.
Government End Users
The Software is a Commercial item as that term is defined at 48
C.F.R. §2.101, consisting of “Commercial Computer Software” and
“Commercial Computer Software Documentation,” as such terms are
used in 48 C.F.R. §12.212 or 48 C.F.R. §227.7202, as applicable. Consistent with these provisions, the Software is being licensed to U.S.
Government end users (a) only as a Commercial item and (b) with
only those rights as are granted to all other end users pursuant to
the terms and conditions of this Agreement.
No Illegal Use & Reservation of Rights
You may not use the Em50G, or the software for any illegal pur-
72
Em50 Series 10 EM50G USER LICENSE AGREEMENT
pose. You acknowledge that the sale of the Em50G to you does
not transfer to you title to or ownership of any intellectual property
rights of Decagon or its suppliers. All of the Software is licensed, not
sold, and such license is non-exclusive.
Data Storage
The Em50G and Software provide Decagon with data about your
Device and its interaction with the software and information related
to the content on your Em50G may be stored on servers in the United
States at Decagon headquarters. You agree to assume sole responsibility to backup and store your data collected by the Em50G and
Software.
Data Security and Privacy
While the Em50G and Software use cryptographic methods to protect the integrity of data transfers, Decagon does not guarantee privacy of measurement data or Device status information collected and
transferred by the Em50G. You are solely responsible for the security
of the Device access passwords issued to you by Decagon.
Patents
The Em50G and/or software used in association with the Em50G
may be covered by one or more patents or pending patent applications, and/or copyright and trademarks or pending applications.
Termination
Your rights under this Agreement automatically terminate without
notice from Decagon if you fail to comply with any term of this
Agreement. In case of such termination, you must cease all use of
the Software and Decagon may immediately revoke your access to
the Service or to Digital Content without notice to you and without
refund of any fees. Decagon’s failure to insist upon or enforce your
strict compliance with this Agreement does not constitute a waiver
of any of its rights. You may terminate the service at any time, but
73
10 EM50G USER LICENSE AGREEMENT Em50 Series
you are responsible for all payments under the data services through
the end of the term.
Disclaimer of Warranties
You expressly acknowledge and agree that use of the EM50G, software and data storage is at your sole risk. Except for the one-year
limited warranty, the Em50G, software and data storage are provided “as is” with all faults and without warranty of any kind and
Decagon and its suppliers and licensors disclaim all warranties, express or implied, including, but not limited to, the implied warranties
of merchantability, fitness for a particular purpose, accuracy, quiet
enjoyment and non infringement of third-party rights. Nor oral or
written information or advice given by Decagon or an authorized representative of Decagon shall create a warranty. The laws of certain
jurisdictions do not allow the disclaimer of implied warranties.
Limitation of Liability
Limitation of liability to the extent not prohibited by law, neither
Decagon nor its suppliers or licensors shall be liable to you for any
incidental or consequential damages for breach of any express or implied warranty, breach of contract, negligence, strict liability or any
other legal theory related to the Em50G, software, or data storage,
including, but not limited to, any damages arising out of loss of profits, revenue, data, or use of the Em50G or software or any associated
product, even if Decagon has been advised of the possibility of such
damages. In any case, Decagon’s aggregate liability under this agreement shall be limited to the amount actually paid for the device. The
laws of certain jurisdictions do not allow the exclusion or limitation
of incidental or consequential damages.
Washington Law Applies
The laws of the state of Washington, without regard to principles
of conflict of laws, govern this Agreement and any dispute of any
sort that might arise between you and Decagon.
74
Em50 Series 10 EM50G USER LICENSE AGREEMENT
Dispute Resolution
By using the Em50G you agree to jurisdiction and venue of any
dispute arising out of this agreement by the Whitman County Court
unless the parties agree to a different dispute resolution process in
writing.
Severability
If any term or condition of this Agreement shall be deemed invalid,
void, or for any reason unenforceable, that part shall be deemed
severable and shall not affect the validity and enforceability of any
remaining term or condition.
Amendment
Decagon reserves the right to amend any of the terms of this Agreement at its sole discretion by sending an amended agreement in writing to you by first class mail or email. Your continued use of the
Device and Software after the effective date of any such amendment
shall be deemed your agreement to be bound by such amendment.
75
Index
Batteries
Installing, 12
Replacing, 58, 62
CE Compliance, 76
Compatible Sensors, 9
Contact Information, 1
Customer Support, 1
DataStation, 54
Communication Test, 55
Configuring DataStation, 54
Configuring Radio Logger, 54
Download Collected Data, 57
DataTrac 3, 6
Decagon Data Service, 35
Declaration of Conformity, 67
Device Tools, 32
Download Software, 6
ECH2O Data Logging Scheme
Data Storage Method, 8
Data Storage Size, 9
Measurement Interval, 7
Measurement Span, 9
ECH2O System Overview
About the Em50, 3
DataLogging Scheme, 7
Software, 6
ECH20 Utility, 6
Common Tasks, 19
Configuring the Em50, 19
Downloading Data, 20
Erasing Data, 22
Instant Measurements
(Scan), 23
Menus
Actions Menu, 31
Data Menu, 30
File Menu, 24
Preferences Menu, 23
Window Menu, 32
Software Installation, 18
Em50, 3
CE Compliance, 67, 68, 70
Compatible Sensors, 3
Maintenance, 58
Long-term, 58
Test Button, 5
Em50G, 3
CE Compliance, 70
Cellular Service, 4, 35
Communication Testing, 38
User License agreement, 71
WebViewer, 7, 33
Em50R, 3
Email, 1
FCC Compliance, 68
Field Installation, 15
Installation
Cautions, 16
Radio
Connecting via Rm-1, 52
Performance, 51
Settings, 20, 50
Reset Button, 4
Seller’s Liability, 2
Specifications, 4
76
Em50 Series INDEX
Status Lights, 5
Telemetry
Test, 48
Transmit Best Practices, 48,
50
Transmit Modes, 47
Two-Way Radio, 48
Troubleshooting
Data Issues, 64
Direct Connection, 62
Logger Issues, 65
Radio Connections, 63
Troubleshooting Quick Guide, 61
USB Adapter (UCA) Driver In-
stallation, 13
Warranty, 2
77
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