Fourtec Fourier Technologies DNR900 Users Manual
Committed
to Quality
User Guide
DataNet Solution
Wireless intelligent logging network
For DataNet Data Acquisition System
DataNet
User Guide
Supporting DataNet v1.2
June 2009
© Fourier Systems Ltd.
Contacting Fourier Systems technical support:
Email: support@fouriersystems.com
Web: www.fouriersystems.com/support/contact_support.php
Telephone: USA 1-866-771-6682 (toll-free within USA only)
For Troubleshooting and FAQs visit the website at:
http://www.fouriersystems.com/support/faq/
To download updated versions of the DataNet User Guide
and DataNet software/firmware visit:
www.fouriersystems.com/support/download_center.php
.
Information in this document is subject to change without
notice.
© 2009 Fourier Systems Ltd. All rights reserved.
Reproduction of this document in any manner without the prior
written consent of Fourier Systems Ltd. is strictly forbidden.
Table of Contents
CHAPTER 1: DATANET OVERVIEW 1
1.1. DataNet Introduction 1
1.2. What is ZigBee? 3
1.3. The ZigBee Concept 3
1.3.1. ZigBee Mesh Network Operation 4
1.3.2. Why is ZigBee Technology Key for Data Logging?
4
1.4. The DataNet System 5
1.4.1. The Data Logger 5
1.4.2. The Receiver/Repeater 8
1.4.3. Hardware Accessories 10
1.4.4. DataNet Software 11
CHAPTER 2: DATANET IMPLEMENTATION GUIDE 12
2.1. DataNet Network Architecture 13
2.2. Pre-setup Requirements 15
2.3. Launching the Software 15
2.4. Connecting the Receiver 17
2.5. Adding the Data Logger to the Network 19
2.5.1. Charging DataNet Loggers 19
2.5.2. Connecting DNL910 and DNL920 Loggers to the
Network
20
2.5.3. Connecting Mini DataNet Loggers and Mini
Repeater to the Network 22
2.5.4. Loading Map View Background 24
2.6. Configuring the Logger 25
2.7. Viewing Data 27
2.7.1. Online Data Views 28
2.7.2. Logger Tooltip 29
2.7.3. Sensor View 30
2.8. Optimizing the Network 31
2.8.1. Signal Test Utility 31
2.8.2. Overcoming RF Obstacles 32
2.8.3. Showing the Network Path 33
2.8.4. Adding Repeaters to the Network 35
2.8.5. Short Range Repeater 35
2.9. Recommended Approach to Deploying DataNet
Units
36
CHAPTER 3: DATANET HARDWARE OVERVIEW 39
3.1. Data Logger Front Panel Layout 39
3.1.1. DNL910 and DNL920 39
3.1.2. DNL804, DNL808 and DNL810 40
3.2. Data Logger External Connections 41
3.2.1. DNL910 and DNL920 41
3.2.2. DNL804 42
3.2.3. DNL808 43
3.2.4. DNL810 44
3.3. DNR800 Mini Repeater Front Panel Layout 44
3.4. DNR900 Receiver/Repeater Front Panel Layout 45
3.5. DNR800 Mini Repeater External Connections 46
3.6. DNR900 Receiver/Repeater External Connections
47
3.7. Data Logger Sensor Overview 48
3.7.1. Internal Sensor Types 48
3.7.2. External Sensor Types 49
3.7.3. Sensor Connection 50
3.7.4. External PT-100 and NTC Sensor Connection 51
3.7.5. Programming Limitations for DNL910 and
DNL920
51
3.7.6. External Alarm Output 52
3.7.7. Polarity 54
3.7.8. Frequency/Pulse Counter 55
3.7.9. User Defined Sensors 55
3.7.10. Sensor Alarms 55
3.7.11. Sensor Calibration 56
3.8. Unit Serial Number and Comment 56
3.9. Power Supply 57
3.9.1. DNR900 in Receiver Mode 57
3.9.2. DNR800 and DNR900 in Repeater Mode 57
3.9.3. DNL910 and DNL920 Data Loggers 58
3.9.4. DNL804, DNL808 and DNL810 Data Loggers 59
3.9.5. Power Adapter 60
3.9.6. Data Logger Battery Life 60
3.10. USB Communication Cable 61
3.11. DataNet Keypad Overview 62
3.11.1. DNL910, DNL920 and DNR900 Keypad 62
3.11.2. DNL804, DNL808, DNL810 and DNR800 Keypad
63
3.12. Operating the DNL910 and DNL920 64
3.12.1. Turning on the Unit 64
3.12.2. Display Shutdown 64
3.12.3. Joining a Network 65
3.12.4. Main Menu Options 68
3.12.5. Additional Logger Screens 74
3.13. Operating the Mini DataNet DNL804, DNL808 and
DNL810 76
3.13.1. Turning the Units Off and On 76
3.13.2. Leave Network and Reconnect to a New Network
78
3.13.3. Running Logger Signal Test 78
3.13.4. Call Unit from Software 79
3.14. Operating the DNR800 Mini Repeater 80
3.14.1. Turning the Unit Off and On 80
3.15. Operating the DNR900 in Receiver Mode 81
3.15.1. Turning on the Unit 81
3.15.2. Receiver Menus 81
3.15.3. Changing Receiver to Repeater 83
3.15.4. Additional Receiver Screens 83
3.16. Operating the DNR900 in Repeater Mode 84
3.16.1. Turning on the Unit 84
3.16.2. Joining a Network 84
3.16.3. Menu Options 87
3.16.4. Additional Repeater Screens 92
CHAPTER 4: USING THE DATANET SOFTWARE 94
4.1. Installing DataNet Software 94
4.1.1. System Requirements 94
4.1.2. Installation Procedure 95
4.1.3. Installation Troubleshooting 98
4.2. DataNet Software Layout 98
4.2.1. Map View 99
4.2.2. Sensor View 100
4.2.3. History View 102
4.2.4. Data Map 103
4.2.5. DataNet Toolbar Icons 104
4.3. File Menu Items 110
4.3.1. Open 110
4.3.2. Open Project File 111
4.3.3. Save Project 111
4.3.4. Save Project As 111
4.3.5. Exit 111
4.4. Network Menu Items 111
4.4.1. Detect Receiver 111
4.4.2. Lock Network 112
4.4.3. Form New Network 112
4.4.4. Refresh Network Connections 113
4.4.5. Show Network Paths 113
4.4.6. Device Filter 114
4.5. Tools Menu Items 114
4.5.1. Define Sensor 114
4.5.2. Switch Sensor View Mode 116
4.5.3. Lock Map View 116
4.5.4. Options Menu 116
4.5.5. Email Alarm Notifications 116
4.5.6. SMS Alarm Notifications 117
4.5.7. Firmware Update Center 117
4.6. Tools > Options Menu Items 117
4.6.1. Preferences Tab 118
4.6.2. Email Settings Tab 120
4.6.3. SMS Settings Tab 121
4.6.4. Analysis Menu Items 122
4.7. Data Recovery 123
4.8. Saving Data 124
4.9. Viewing Archived (Offline) Data 125
4.10. Viewing Online Data 127
4.10.1. Showing/Hiding the Data Sets 129
4.11. Working in Map View 130
4.11.1. Loading Map View Wallpaper 130
4.11.2. Moving Icons around the Screen 130
4.11.3. Logger Icon Context Menu 131
4.11.4. Viewing Logger Status 134
4.11.5. Receiver Icon Context Menu 136
4.11.6. Viewing Receiver Status 137
4.11.7. Repeater Icon Context Menu 137
4.11.8. Viewing Repeater Status 139
4.12. Configuring the Logger 140
4.12.1. Device Setup Tab 140
4.12.2. Alarm Setup Tab 143
4.13. Alarm Notifications Setup 145
4.13.1. Contacts Tab 146
4.13.2. Groups Tab 148
4.13.3. Notifications Setup Tab 149
4.13.4. Email and SMS Notification Formats 151
4.14. Calibration 152
4.14.1. Introduction to DataNet Calibration 153
4.14.2. Calibrating the Data Logger 156
4.14.3. Performing a Two-point Calibration 157
4.14.4. Performing an Offset Calibration 158
4.14.5. Setting the Offset to a Specific Input 159
4.14.6. Calibrating the Internal Temperature Sensor on
the DL910 159
4.14.7. Calibrating the External PT-100 Sensor Input 160
4.14.8. Saving Calibration Settings 160
4.14.9. Loading Calibration Settings 160
4.15. Analyzing the Data 161
4.15.1. Using the Graph Features 161
4.15.2. Statistical Analysis 167
4.16. Exporting Data to Excel or CSV Formats 168
4.17. Printing the Data 169
4.18. System Password 170
CHAPTER 5: UPDATING DATANET SOFTWARE AND
FIRMWARE 171
5.1. Using the Uptodata Client 171
5.2. Updating DataNet Firmware 176
5.2.1. Downloading the Firmware File 177
5.2.2. Firmware Update from the Update Center 177
5.2.3. Firmware Update from the Map View Icon 181
APPENDIX A: DATANET SPECIFICATIONS 183
A.1. Data Logger Input Types 183
A.2. DNL910 and DNL920 Outputs 184
A.3. Logger Input Specifications DNL910 and DNL920
184
A.4. Mini DataNet Sensor Specifications 186
A.5. General Specifications 186
A.6. System Requirements 190
APPENDIX B: SAFETY INFORMATION AND FCC IDS
191
APPENDIX C: ORDERING INFORMATION 195
APPENDIX D: FIGURES AND TABLES 199
Chapter 1:
DataNet Overview
This chapter provides a general overview of the DataNet
system as well as the concept behind the ZigBee RF protocol.
1.1. DataNet Introduction
The Wireless Intelligent Logging Network
Fourier Systems next generation data logging system is the
DataNet, a 16-bit, mobile data acquisition network based on
the innovative and reliable ZigBee technology. This solution
provides an intelligent sensor mesh system with 100% data
receipt and no data loss.
The DataNet system is comprised of a family of data logging
units, as well as a Receiver to manage the intelligent network
and Repeaters to extend the transmission range. The data
loggers measure a broad range of parameters and include
models that feature between one and four inputs for direct
measurement and recording of PT-100, thermocouple, 0 to 1
V, 4 to 20 mA, contact, frequency and pulse sensors, as well
as internal temperature and relative humidity sensors. These
models range from loggers with graphic display, AC or battery
power supply, to models with no display and battery power
only.
Data is transmitted from the end units to a Receiver
connected to a central computer. The system leverages the
ZigBee protocol, a 2.4 GHz license-free frequency RF band,
to ensure full data integrity. By adding DataNet Repeater units
to the network, you can extend the transmission range and
form a reliable mesh network of up to 65,000 units.
1
With its high resolution and fast Analog to Digital converter
(ADC), DataNet data loggers meet the majority of data
acquisition requirements in most industrial applications. Every
DataNet logger unit is embedded with a unique serial number
and can be loaded with a descriptive comment for safe
identification. An internal clock and calendar keeps track of
the time and date of every sample measured.
DataNet loggers can automatically activate external alarm
events when data is outside a specified range. Email and
SMS notifications can be sent to predefined contacts.
The DataNet system is powered by the powerful DataNet
software. The Windows ™ based software is the central
management interface of the DataNet network. Data is
monitored online and can be displayed in graphs or tables.
You can analyze data with various mathematical tools, or
export data to a spreadsheet.
The software also enables you to configure, calibrate or
update the firmware of DataNet units wirelessly.
Key DataNet benefits include:
• Reliable transmission ensuring no data loss
• Long-range monitoring
• Ability to constantly expand transmission range by adding
additional Repeaters, or turning loggers into Repeaters
• Portable units facilitating easy deployment in various
environments
• Remote programming and firmware updates
• 65,000+ possible end units
• 16-bit resolution
• Low-power consumption
• Long battery life
• Minimal costs thanks to wireless infrastructure
2
1.2. What is ZigBee?
ZigBee is a standards-based protocol built around the IEEE *
802.15.4 wireless protocol, providing the network
infrastructure required for wireless, low power network
applications.
The mesh network eliminates single points of failure by
providing multiple pathways for data to travel.
* IEEE is the Institute of Electrical and Electronics Engineers,
a non-profit organization dedicated to furthering technology
involving electronics and electronic devices.
1.3. The ZigBee Concept
The Coordinator: This device creates and maintains the
network. Once the network is up and running, the coordinator
behaves as just another device on the network. There is only
one Coordinator in a ZigBee network.
The Router: A router relays data packets/messages between
devices on the network and increases the distance between
these devices.
The End Unit: This device sends and receives information to
other devices on the network. It is usually a control or a
sensor unit, often battery operated. A ZigBee end unit cannot
relay messages.
ZigBee Terminology DataNet Terminology
Coordinator Receiver
Router Repeater
End Unit Data Logger
ZigBee enables mesh networking which supports a wireless,
yet integrated environment with communication between
3
many coordinators, routers and end units in environments
where multiple applications are being monitored.
1.3.1. ZigBee Mesh Network
Operation
Figure 1: ZigBee network diagram
In a mesh network, all the router units are aware of their
environment meaning a router knows with units are close by.
When a router sends a message to a specific unit, it relays the
message until it gets to the destination.
Network recovery from a unit failure
In a mesh network, when a router fails, the network
automatically finds a different path via a different router for the
message relay.
This ensures maximum protection against a network
breakdown.
1.3.2. Why is ZigBee Technology Key
for Data Logging?
ZigBee technology has proved to be ideal for data acquisition
networks which require meter reading, parametric display of
data such as temperature or humidity and responsive action
when parameters are crossed. This is due to the fully
automated, flexible and reliable nature of the protocol. With
4
the Mesh Network system, the ZigBee standard redresses
misbalances in any data logging system, responding to
weaknesses, inefficiencies, new network structure (with the
additional or removal of devices) through self correction.
1.4. The DataNet System
The basic DataNet system will contain at least one of the
following units:
• DataNet data logger – Part Number DNL804, DNL808,
DNL810, DNL910, DNL920
• Receiver/Repeater unit – Part Number DNR900
• Mini Repeater – Part Number DNR800
• Mini-USB cable
• Power adapter (one per DataNet unit ordered)
• DataNet Software CD
1.4.1. The Data Logger
There are five distinct data logger models compatible with the
DataNet system. These are the so-called end units of the
system. These loggers support up to four external sensors
and two internal sensors, temperature and humidity,
depending on the specific model. Data is recorded and stored
to the logger’s internal memory and transmitted over the
network to the DataNet software running on the PC.
The data logger is programmed to consume as little power as
possible during operation, in order to conserve the battery life.
When not transmitting or recording data the units are in sleep
mode and they wake up when needed.
5
The battery for the DNL910 and DNL920 is rechargeable and
can run up to several months on one charge, depending on
the logger configuration.
The battery for the DNL804, DNL808 and DNL810 is not
rechargeable and can run up to ten months before being
replaced, depending on the logger configuration.
Refer to section 3.9.6 for more information.
Note: Battery life depends on the logger sampling rate,
transmission rate, type of sensor, network architecture and
number of measured sensors.
The five DataNet models can be divided into two groups:
• DataNet loggers (with LCD)
• Mini DataNet loggers (without LCD)
DataNet Loggers (with LCD)
Part Number: DNL920 Part Number: DNL910
Four external channel RF data logger
with two internal sensors, Humidity and
Temperature
Four external channel RF data logger
with internal Temperature sensor
6
Transmission Range: Up to 80 m line
of sight
Memory Capacity: ~59,000 samples
Power supply: AC or battery operated
Transmission Range: Up to 80 m line
of sight
Memory Capacity: ~59,000 samples
Power supply: AC or battery operated
Mini DataNet Loggers (without LCD)
PN: DNL804 PN: DNL810 PN: DNL808
Single channel RF data
logger supporting external
4 to 20 mA input
Transmission Range:
Up to 80 m line of sight
Memory Capacity:
~59,000 samples
Power supply: Battery
operated
Dual channel RF data
logger with internal
Temperature and Humidity
sensors.
Transmission Range:
Up to 80 m line of sight
Memory Capacity:
~59,000 samples
Power supply: Battery
operated
Single channel RF data
logger supporting
external temperature
NTC 10KΩ probe
Transmission Range:
Up to 80 m line of sight
Memory Capacity:
~59,000 samples
Power supply: Battery
operated
7
1.4.2. The Receiver/Repeater
Note: The DNR900 can work in one of two modes, Receiver
or Repeater. The DNR800 only works as a Repeater.
The Receiver, PN DNR900, acts as a bridge between the
DataNet network and the PC. It is connected to the PC via
USB cable and is used to create the network to which you add
your data loggers. The Receiver is externally powered but
also includes a rechargeable battery for back up (in case the
external power fails).
Note: Each Receiver can detect up to 8 data loggers and 16
Repeaters. To detect more data loggers, Repeaters are
required.
The Repeater is considered the backbone of the network, as
it enhances the network range by receiving and transmitting
between end unit and Repeater until it reaches the PC. There
are two Repeater models, the DNR900 with LCD and the
DNR800 Mini Repeater, without LCD. Both are externally
powered via the AC adapter but the DNR900 also includes a
rechargeable battery back up (in case the external power
fails).
The Repeaters are the end units’ parent units, meaning each
Repeater has specific end units under their responsibility
(their children). They route the transmissions to and from the
end units to the Receiver (or other Repeaters in the network).
Each Repeater holds the data sent to the end units while the
end units are in sleep mode. At a specific interval the end unit
wakes up and receives the data from its parent (Repeater).
Note: Each Repeater can detect up to 24 data loggers and 16
Repeaters including the parent unit. If the number of loggers
exceeds this capability, additional Repeaters are required.
8
Receiver/Repeater with LCD
Part Number: DNR900
Repeater Transmission Range: 800 m line of sight
End Units per Receiver: ~65,000
9
Mini Repeater (without LCD)
Part Number: DNR800
Repeater Transmission Range: 800 m line of sight
End Units per Receiver: ~65,000
1.4.3. Hardware Accessories
The DataNet system includes the following accessories:
• Mini-USB cable for connecting PC to DataNet Receiver
• Power adapter to power DataNet Receiver, Repeater and
data loggers
10
1.4.4. DataNet Software
The user interface for the DataNet system, the DataNet
software CD is provided together with the DataNet hardware
and includes the following features:
• Network management
• Data display, management, storage and data diagnostics
• Alarm settings: Email and SMS notifications, visual and
audible alarms
• Wireless sensor definition
• Wireless sensor calibration
• Wireless firmware update (boot over the air)
• Automatic software update (via Fourier server)
The software interface is described in detail in Chapter 4:
Note: DataNet is also FDA 21 CFR Part 11 compliant. CFR
compliant software must be purchased separately.
11
Chapter 2:
DataNet
Implementation Guide
Fourier Systems strongly suggests first time users of the
DataNet system read this chapter before drilling down into the
many features of the system described later in the user guide.
The Implementation Guide will give you a clear understanding
of the basic aspects of setting up the system, and getting your
network up and running.
Once you are familiar with the technical aspects of setting up
the network as outlined in this chapter, please consult section
2.8 2.9 for Fourier’s recommended approach to initial
deployment of the system.
Example
Below is a diagram depicting a supermarket deployment of a
DataNet system, illustrating how the devices may be
positioned to provide full coverage within the facility.
Figure 2: Example of DataNet network application
12
2.1. DataNet Network
Architecture
The DataNet network architecture consists of layers of loggers
and Repeaters, forming a mesh network monitored by the
Receiver unit connected to the workstation PC.
The basic architecture is as follows:
• Maximum nodes on network: 65,000
• DNR900 Receiver recognizes up to 8 loggers and 16
Repeaters
• DNR900 Repeater and DNR800 Mini Repeater
recognizes up to 24 loggers and 16 Repeaters (including
parent unit)
• DNL910 and DNL920 in Short Range Repeater mode
(refer to section 2.8.5) recognizes up to 24 loggers and 16
Repeaters
The diagrams below show the architecture of a typical
DataNet mesh network. Repeaters and loggers, which are
being used as Short Range Repeaters in Figure 4 (see
section), can be added to the network in order to extend the
range and improve its robustness. Each such device has end
units communicating with it, but this route may change as the
RF environment changes. This is the ZigBee’s self correcting
mechanism at play.
13
1
1
DL
DLDL
RC
RCRC
DL
DLDL
8
DL
DLDL
DL
DLDL
8
24
24
1
1
24
24
24
1
1
1
DL
DL
DLDL
RP
RP
RP
RPRP
15
15
RPRP
16
16
16
DL
DL
DLDL
RP
RPRP
RP
RP
RPRP
1
1
1
1
1
Figure 3: Standard DataNet mesh network architecture
DL
DL
DLDL
DL
DL
DLDL
USB
USB
RC
RC
RCRC
DL
DL
DLDL
DL
DL
DLDL
DL
DL
DLDL
DL
DL
DL
DL
DLDL
DL
DL
DLDL
DL
DL
DLDL
DL
DL
DLDL
DL
DL
DLDL
DL
DL
DLDL
DL DL DL
DL DL DL
DLDL DLDL DLDL
RP
RP
RPRP
SRR
SRR
DL
DLDL
RP
RP
RPRP
RP
RP
RPRP
SRR
SRR
DL
DLDL
RP
RP
RPRP
RP
RP
RPRP
DL
DL
DLDL
DL
DL
DLDL
DLDL
DLDLDL
DLDLDL
DLDL
DLDL
DL
DL
DLDL
Figure 4: DataNet network with Short Range Repeaters
14
DLDL
DL
DL
DLDL
DL
DL
DLDL
2.2. Pre-setup Requirements
Prior to commencing with the DataNet implementation you
must have the following requirements in place:
PC
• 24/7 availability
• Reliable AC power
• Sufficient hard disk space to store loggers’ data
• One free USB port
DataNet devices
• One DNR900 DataNet Receiver
• At least one DataNet logger DNL910 or DNL920, or Mini
DataNet logger DNL808 or DNL810
• At least one DNR900 DataNet Repeater or DNR800 Mini
Repeater, depending on your environment
Mini-USB cable
The mini-USB cable connects the DNR900 Receiver to the
PC (and is supplied with the PC Suite software kit).
2.3. Launching the Software
1. Install the DataNet software on the PC workstation. Refer
to section 4.1: Installing DataNet Software on page 94 for
more details.
15
2. Once the software and associated components have
been installed, launch DataNet from your DataNet
desktop shortcut
3. The main DataNet window is launched. The default view
is called Map View.
Figure 5: Main DataNet window
4. Check for DataNet updates. Go to Help > Check for
Updates from the DataNet main menu to check for newer
versions of DataNet software and firmware released since
you purchased your system. For more details on the
Update feature go to Chapter 5: Updating DataNet
Software and Firmware.
.
16
2.4. Connecting the Receiver
1. Only once the DataNet software has been installed,
connect the DataNet Repeater unit (DNR900) to the
Fourier-supplied power adapter.
Note: Only use adapters provided by Fourier Systems. Use of
the wrong adapter could damage your DataNet units.
2. Turn on the unit by pressing the Scroll button
the front keypad. The unit will beep when turned on.
3. Verify that the unit is in Receiver mode by seeing the
following screen on the LCD:
Receiver
ID: 123.456.789
The ID will be unique to your Receiver network. If the unit
is in Repeater mode, switch it to Receiver mode. Go to
section 3.16 for more details.
4. Connect the mini-USB cable to the computer and to the
Receiver’s mini-USB port. The DataNet Receiver icon
will immediately appear in the top left corner of the
Map View.
on
17
Figure 6: Adding Receiver icon to Map View
A green icon indicates that the Receiver is online.
Note: If the Receiver is not recognized by the software try
connecting the mini-USB cable to another USB port on the
PC. Or select Network > Detect Receiver in the main menu.
Should you disconnect the Receiver’s USB cable or
power adapter (and the battery eventually dies), the
Receiver icon will be grayed out:
5. Go to Network > Form New Network. The Receiver will
then form a new network based on your RF environment
rather than use the network formed in the factory. This will
ensure optimal network performance. Refer to section 2.8:
Optimizing the Network for more details.
Check the DataNet network ID that was formed by the
Receiver by placing the mouse cursor over the Receiver
icon. The network ID as well as Receiver firmware version
and unit serial number is displayed.
Figure 7: Receiver tooltip
Note: You can move the Receiver icon elsewhere on the
screen by going to Tools > Lock Map View and unselecting
this option.
18
2.5. Adding the Data Logger to
the Network
Once you have connected your Receiver and established a
network you are ready to add data loggers and build your
system.
2.5.1. Charging DataNet Loggers
This section refers to charging the DNL910 or DNL920
loggers. The Mini DataNet units are battery operated only.
Note: Only use adapters provided by Fourier Systems. Use of
the wrong adapter could damage your DataNet units.
If the loggers will run from the battery supply make sure to first
charge each of the loggers for 16 hours before use in order
maximize the battery life. A fully charged battery can last
several months, depending on your logger configuration.
Refer to section 3.9.6 or more details on battery life.
If the loggers will run from the AC power supply, when first
connected to the AC adapter the logger will always initiate the
16 hour charge cycle.
Note: For loggers measuring data with the internal
temperature sensor, it is critical to note that during the charge
cycle the logger will heat up thereby causing the internal
temperature sensor reading to rise up to 10 ˚C above ambient
temperature. Once the charging process is complete, the
logger will cool down and the internal temperature sensor
readings will return to normal.
19
For loggers remaining connected to AC power, to prevent the
logger from heating up again following the initial charge cycle,
the logger will receive a one minute trickle charge each day
rather than stay continually charged. This is sufficient to
ensure the logger doesn’t self-discharge and will maintain the
logger’s full charge status.
Refer to section 3.9.3 for more details on the DataNet loggers’
power supply.
2.5.2. Connecting DNL910 and
DNL920 Loggers to the
Network
1. Turn on the logger by pressing the Scroll button .
The unit will beep when turned on. As soon as the unit is
turned on, the LCD screen will display the following
message:
Fourier Systems
Logger
2. The logger will then start scanning for networks. The LCD
will indicate how many networks were found in range, and
will announce when the scan is complete. Locked
networks will not be listed.
Scan for network Scan for network
Found 2 networks
Found 2 networks
To join the network created by your Receiver (there may be
other networks created by your colleagues) scroll through the
found networks on the LCD (using the logger Scroll button)
20
Scan complete Scan for network Scan for network
Scan complete
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