Geokon LC-2x4, 8002-4-3, 8002-4-2, 8002-4-1 Instruction Manual

Instruction Manual

Model LC-2x4

4 Channel VW Datalogger

No part of this instruction manual may be reproduced, by any means, without the written consent of Geokon, Inc.

The information contained herein is believed to be accurate and reliable. However, Geokon, Inc. assumes no responsibility

for errors, omissions or misinterpretation. The information herein is subject to change without notification.

(Doc Rev W, 11/14/2018)

Warranty Statement

Geokon, Inc. warrants its products to be free of defects in materials and workmanship, under normal use and service for a period of 13 months from date of purchase. If the unit should malfunction, it must be returned to the factory for evaluation, freight prepaid. Upon examination by Geokon, if the unit is found to be defective, it will be repaired or replaced at no charge. However, the WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of being damaged as a result of excessive corrosion or current, heat, moisture or vibration, improper specification, misapplication, misuse or other operating conditions outside of Geokon's control. Components which wear or which are damaged by misuse are not warranted. This includes fuses and batteries.

Geokon manufactures scientific instruments whose misuse is potentially dangerous. The instruments are intended to be installed and used only by qualified personnel. There are no warranties except as stated herein. There are no other warranties, expressed or implied, including but not limited to the implied warranties of merchantability and of fitness for a particular purpose. Geokon, Inc. is not responsible for any damages or losses caused to other equipment, whether direct, indirect, incidental, special or consequential which the purchaser may experience as a result of the installation or use of the product. The buyer's sole remedy for any breach of this agreement by Geokon, Inc. or any breach of any warranty by Geokon, Inc. shall not exceed the purchase price paid by the purchaser to Geokon, Inc. for the unit or units, or equipment directly affected by such breach. Under no circumstances will Geokon reimburse the claimant for loss incurred in removing and/or reinstalling equipment.

Every precaution for accuracy has been taken in the preparation of manuals and/or software, however, Geokon, Inc. neither assumes responsibility for any omissions or errors that may appear nor assumes liability for any damages or losses that result from the use of the products in accordance with the information contained in the manual or software.

TABLE OF CONTENTS

1. INTRODUCTION .................................................................................................................................................. 1

2. GETTING STARTED ............................................................................................................................................ 2

TRANSDUCER INSTALLATION .............................................................................................................................. 2

2.1

2.1.1 Cable Gland Models (8002-4-1, 8002-4-2, 8002-4-3) ............................................................................... 2

2.1.2 10-pin Bulkhead Models (8002-4A-1, 8002-4A-2, 8002-4A-3) .................................................................. 3

BATTERY INSTALLATION .................................................................................................................................... 4

2.2

ACCESSORIES ...................................................................................................................................................... 4

2.3

EARTH GROUND INSTALLATION ......................................................................................................................... 4

2.4

SOFTWARE INSTALLATION AND SETUP ............................................................................................................... 5

2.5

2.5.1 LogView Installation .................................................................................................................................. 5

2.5.2 Launching LogView .................................................................................................................................... 5

2.5.3 LogView Workspaces ................................................................................................................................. 6

2.5.4 Adding Projects to LogView Workspaces ................................................................................................... 7

2.5.5 Adding Dataloggers to LogView Projects .................................................................................................. 8

2.5.6 LC-2x4 Connection (8002-4-1, RS-232) ....................................................................................................10

2.5.7 LC-2x4 Connection (8002-4-2, USB) ........................................................................................................10

2.5.8 LC-2x4 Connection 8002-4-3 (RS_485) ....................................................................................................10

2.5.9 Connecting to a Datalogger with LogView ...............................................................................................11

2.5.10 Determining COM Port Numbers ...........................................................................................................12

COMMUNICATION SETUP EXAMPLE USING HYPERTERMINAL ...........................................................................13

2.6

3. COMMAND LIST .................................................................................................................................................17

3.1

“BRNNN”- SET OR DISPLAY THE CURRENT BAUD RATE ....................................................................................17

“C” - DISPLAY CURRENT CLOCK SETTINGS .......................................................................................................17

3.2

“CSMM/DD/YY/HH:MM:SS” - SET THE INTERNAL CLOCK ...................................................................................17

3.3

“DEFAULT” – LOAD FACTORY DEFAULT SETTINGS ........................................................................................17

3.4

“DF” - DISPLAY OR SET DATE FORMAT .............................................................................................................18

3.5

“DL” – DISPLAY CURRENT MODE .....................................................................................................................18

3.6

“DNNNN” - DISPLAY ARRAYS FORWARD FROM USER POSITION ........................................................................18

3.7

“E” - LOW POWER SLEEP MODE ........................................................................................................................19

3.8

“GNN/C/TT/SZZZZZZ/SFFFFFF/SOOOOOO” OR “GNN/C/TT/SAAAAAA/SBBBBBB/SCCCCCC” – GAGE SETTINGS .....20

3.9

“IDDDDDDDDDDDDDDDDD” - DISPLAY OR SET DATALOGGER ID ...................................................................24

3.10

“L” - DISPLAY LOG INTERVALS .......................................................................................................................24

3.11

“LN/LLLLL/III” - DEFINE LENGTH AND ITERATION OF INTERVAL .....................................................................25

3.12

“LD” - DISABLE LOG INTERVALS ....................................................................................................................26

3.13

“LE” - ENABLE LOG INTERVALS ......................................................................................................................26

3.14

“M” - DISPLAY CURRENT MONITOR MODE SETTING .......................................................................................26

3.15

“MD” - DISABLE MONITOR MODE ...................................................................................................................26

3.16

“ME” - ENABLE MONITOR MODE ....................................................................................................................26

3.17

“MXS” – DISPLAY MULTIPLEXER STATUS ......................................................................................................27

3.18

“MXN” – SET THE MAXIMUM NUMBER OF CHANNELS ....................................................................................27

3.19

“N” - DISPLAY NEXT MEASUREMENT CYCLE ..................................................................................................27

3.20

“NA” - DISPLAY NETWORK ADDRESS .............................................................................................................28

3.21

“NADDD” - SET NETWORK ADDRESS ..............................................................................................................28

3.22

“ND” - NETWORK DISABLE .............................................................................................................................29

3.23

“NE” - NETWORK ENAB LE ...............................................................................................................................29

3.24

“NS” - DISPLAY NETWORK STATUS .................................................................................................................29

3.25

“PNNNN” - SET USER POSITION MEMORY POINTER .........................................................................................30

3.26

“R” - RESET MEMORY POINTERS .....................................................................................................................30

3.27

“RESET” - REBOOT THE LC-2 MICROPROCESSOR ...........................................................................................30

3.28

“S” – DISPLAY STATUS ....................................................................................................................................30

3.29

“SCNNNNN” - SET SCAN INTERVAL .................................................................................................................31

3.30

“SS” - DISPLAY SYSTEM STATUS .....................................................................................................................31

3.31

“SPHH:MM” - STOP LOGGING ..........................................................................................................................32

3.32

“SR” - SYNCHRONIZE READINGS .....................................................................................................................32

3.33

3.34 “STHH:MM” - START LOGGING ........................................................................................................................ 33

“SV” - DISPLAY SOFTWARE VER SION ............................................................................................................. 33

3.35

“TEST” - PERFORM INTERNAL SELF-TESTS .................................................................................................... 33

3.36

“TF” - DISPLAY OR SET TIME FORMA .............................................................................................................. 34

3.37

“TNN/T” – SET THERMISTOR TYPE .................................................................................................................. 35

3.38

“TR” - DISPLAY CURRENT TRAP COUNT ......................................................................................................... 35

3.39

“TR0” - RESET TRAP COUNT ........................................................................................................................... 35

3.40

“VL” – DISPLAY COIN CELL VOLTAGE ........................................................................................................... 35

3.41

“V3” – DISPLAY THE D CELL BATTERY VOLTAGE .......................................................................................... 36

3.42

“V12” – DISPLAY THE EXTERNAL BATTERY VOLTAGE ................................................................................... 36

3.43

“WF” - DISPLAY CURRENT WRAP FORMAT ..................................................................................................... 36

3.44

“X” - TAKE IMMEDIATE READING ................................................................................................................... 37

3.45

4. MAINTENANCE .................................................................................................................................................. 38

4.1

CLEANING.......................................................................................................................................................... 38

BATTERIES ......................................................................................................................................................... 38

4.2

5. TROUBLESHOOTING ........................................................................................................................................ 39

APPENDIX A. SPECIFICATIONS ......................................................................................................................... 40

A.1

MEASUREMENT CAPABILITY ............................................................................................................................ 40

POWER .............................................................................................................................................................. 40

A.2

MEMORY .......................................................................................................................................................... 40

A.3

CLOCK .............................................................................................................................................................. 41

A.4

SERIAL INTERFACE (ALL LC-2X4 MODELS) ...................................................................................................... 41

A.5

RS-485 NETWORK ............................................................................................................................................ 41

A.6

VIBRATING WIRE MEASUREMENT .................................................................................................................... 41

A.7

INTERNAL/EXTERNAL TEMPERATURE MEASUREMENT ..................................................................................... 41

A.8

MAIN BATTERY MEASUREMENT ....................................................................................................................... 42

A.9

MULTIPLEXER RELAY ..................................................................................................................................... 42

A.10

APPENDIX B. CONNECTOR PINOUTS .............................................................................................................. 43

B.1

TRANSDUCER CABLE CONNECTIONS................................................................................................................. 43

RS-232 CONNECTOR PINOUT (8002-4-1) .......................................................................................................... 43

B.2

USB CONNECTOR PINOUT (8002-4-2) .............................................................................................................. 44

B.3

RS-485 CONNECTOR PINOUT (OPTIONAL, 8002-4-3) ........................................................................................ 44

B.4

APPENDIX C. DATA FILE TRANSFER TO A WINDOWS PC ........................................................................ 45

C.1

DOWNLOADING DATA USING LOGVIEW ........................................................................................................... 45

DOWNLOADING DATA USING HYPERTERM INAL (OR EQUIVALENT) .................................................................. 46

C.2

APPENDIX D. SAMPLE DATA FILE ................................................................................................................... 49

D.1

SAMPLE RAW DATA FILE .................................................................................................................................. 49

APPENDIX E. THERMISTOR TEMPERATURE DERIVATION ..................................................................... 50

APPENDIX F. NETWORKING .............................................................................................................................. 53

DESCRIPTION ..................................................................................................................................................... 53

F.1

EXAMPLE OF A FOUR-DATALOGGER NETWORKING SESSION ............................................................................ 53

F.2

APPENDIX G. LITHIUM COIN CELL ................................................................................................................. 55

G.1

DESCRIPTION .................................................................................................................................................... 55

REPLACEMENT PROCEDURE .............................................................................................................................. 55

G.2

APPENDIX H. MODEL 8032-27 AND LOAD CELL WIRING .......................................................................... 57

APPENDIX I. BATTERY REPLACEMENT INSTRUCTIONS FOR UNITS MANUFACTURED BEFORE

SEPTEMBER 2018 ................................................................................................................................................... 58

FIGURES

FIGURE 1 - BATTERY DETAIL......................................................................................................................................... 4

FIGURE 2 - SELECT WORKSPACE NAME ......................................................................................................................... 6

FIGURE 3 - SELECT WORKSPACE FOLDER ...................................................................................................................... 6

FIGURE 4 - LOGVIEW MAIN WINDOW ........................................................................................................................... 7

FIGURE 5 - LOGVIEW MAIN WINDOW WITH NEW PROJECT ............................................................................................ 8

FIGURE 6 - LOGVIEW CONTEXT MENU .......................................................................................................................... 9

FIGURE 7 - DATALOGGER SETTINGS, CONNECTION OPTIONS ........................................................................................ 9

FIGURE 8 - DATALOGGER HIGHLIGHTED, NOT CONNECTED .........................................................................................10

FIGURE 9 - DATALOGGER CONNECTION MISMATCH .....................................................................................................11

FIGURE 10 - DATALOGGER CONNECTED .......................................................................................................................11

FIGURE 11 - PC INTERNAL COM PORT .........................................................................................................................12

FIGURE 12 - DEVICE MANAGER PORTS LIST .................................................................................................................12

FIGURE 13 - HYPERTERMINAL CONNECTION DESCRIPTION ..........................................................................................13

FIGURE 14 - COM PORT SELECTION .............................................................................................................................13

FIGURE 15 - COM PORT SETTINGS ...............................................................................................................................14

FIGURE 16 - ORDER OF ARRAY USAGE .........................................................................................................................19

FIGURE 17 - LOGVIEW COLLECT DATA BUTTON ..........................................................................................................45

FIGURE 18 - DATA COLLECTION PROGRESS BAR ..........................................................................................................45

FIGURE 19 - DATA COLLECTION COMPLETE MESSAGE.................................................................................................46

FIGURE 20 – HYPERTERMINAL CONNECTION DESCRIPTION .........................................................................................46

FIGURE 21 - HYPERTERMINAL CONNECTION SELECTION .............................................................................................46

FIGURE 22 - HYPERTERMINAL COM PORT SETTINGS ..................................................................................................47

FIGURE 23 - HYPERTERMINAL TRANSFER MENU .........................................................................................................47

FIGURE 24 - SPECIFY DATA CAPTURE FILE ..................................................................................................................48

FIGURE 25 - HYPERTERMINAL/DATALOGGER COMMUNICATION .................................................................................48

FIGURE 26 - MODEL 8032-27 JUMPER WIRE ASSEMBLY ..............................................................................................57

FIGURE 27 - BATTERY INSTALLATION DETAIL .............................................................................................................58

TABLES

TABLE 1 - TRANSDUCER CABLE CONNECTIONS ............................................................................................................. 3

TABLE 2 - VIBR ATING WIRE GAGE TYPES ....................................................................................................................22

TABLE 3 - GAGE TYPE DESCRIPTIONS ..........................................................................................................................23

TABLE 4 - ENGINEERING UNITS MULTIPLICATION FACTORS ........................................................................................23

TABLE 5 - LOGARITHMIC INTERVALS LIST ...................................................................................................................25

TABLE 6 - S COMMAND INFORMATION .........................................................................................................................31

TABLE 7 - SS COMMAND INFORMATION .......................................................................................................................31

TABLE 8 - TEST MENU INFORMATION .........................................................................................................................34

TABLE 9 - APPROXIMATE OPERATING TIMES ...............................................................................................................38

TABLE 10 - TRANSDUCER CABLE CONNECTIONS ..........................................................................................................43

TABLE 11 - RS-232 CONNECTOR PINOUT .....................................................................................................................43

TABLE 12 - USB CONNECTOR PINOUT .........................................................................................................................44

TABLE 13 - RS-485 CONNECTOR PINOUT .....................................................................................................................44

TABLE 14 - STANDARD THERMISTOR RESISTANCE VERSUS TEMPERATURE .................................................................50

TABLE 15 - BR55KA822J THERMISTOR RESISTANCE VERSUS TEMPERATURE .............................................................51

TABLE 16 - 103JL1A THERMISTOR RESISTANCE VERSUS TEMPERATURE ....................................................................52

TABLE 17 - COMMON CONDUCTOR CHART ..................................................................................................................57

TABLE 18 - MULTIPLEXER BOARD WIRING ..................................................................................................................57

EQUATIONS

EQUATION 1 - DISPLAYED GAGE READING USING LINEAR CONVERSION .....................................................................21

EQUATION 2 - DISPLAYED GAGE READING USING POLYNOMIAL CONVERSION ............................................................22

EQUATION 3 - DIGITS CALCULATION USING LINEAR CONVERSION ..............................................................................23

EQUATION 4 - DIGITS CALCULATION USING POLYNOMIAL CONVERSION .....................................................................23

EQUATION 5 - CONVERT THERMISTOR RESISTANCE TO TEMPERATURE .......................................................................50

EQUATION 6 - CONVERT THERMISTOR, TYPE BR55KA822J, RESISTANCE TO TEMPERATURE .....................................51

EQUATION 7 - CONVERT THERMISTOR, TYPE 103JL1A, RESISTANCE TO TEMPERATURE .............................................52

1. INTRODUCTION

Model 8002-4, LC-2x4, 4-Channel Datalogger is a low cost, battery powered, easy to use measurement instrument, designed to read up to four vibrating wire sensors equipped with thermistors.

The 320K standard memory provides storage for 10666 data arrays. Each array consists of an optional datalogger ID string (16 characters maximum), a timestamp consisting of the year, date (Julian day or month/day format), time (hhmm or hours/minutes format) and seconds when the reading was taken. Also included in the data is the internal 3V (or external 12V) battery voltage, the datalogger temperature, the vibrating wire readings, the transducer temperature and the Array number.

Internal math is calculated using 32-bit floating point notation (IEEE). Math operations on the instrument readings, such as application of zero readings, gage factors (or calibration factors) and offsets when using a linear conversion technique or polynomial coefficients when using the polynomial conversion, provide outputs directly in engineering units. The dataloggers internal configuration is defined through communication with a computer using the supplied RS-232 or USB (or optional RS-485) interface cable. The datalogger is configured and monitored using LogView, a Geokon proprietary Graphic User Interface (GUI) software application (See Section

2.5). The datalogger can also be configured and monitored via text-based commands with any standard terminal emulator software, such as Microsoft Windows HyperTerminal™ (see Section

3).

The communication method for each model of the LC-2x4 is described below

8002-4-1: Communication with the LC-2x4 is implemented via the host computer’s RS-232

COM port. See Section 2.5.6 for further information.

8002-4-2: Communication with the LC-2x4 is implemented via the host computer’s USB 2.0

port. When connected to a computer via the USB port, the LC-2x4 appears to the computer as a “virtual” COM port. The LC-2x4 datalogger also receives all of its operating power from the computer, thus extending the internal 3V (or external 12V) battery life. When disconnected from the USB port, the datalogger automatically switches to the internal 3V (or external 12V) battery pack. See Section 2.5.7 for further information.

8002-4-3: Communication with the LC-2x4 is implemented via RS-485. This allows for

long communication cables (up to 4000’) between the host computer and the LC2x4. The ability to network two or more LC-2x4 dataloggers together is also available with this communication option. See Section 2.5.8 and Appendix F Networking for further information.

All data, both readings and configuration, are stored in non-volatile EEPROM with a typical storage life of 10 years (minimum). The internal temperature compensated real-time clock, used to provide timekeeping and triggering of readings, is accurate to approximately two minutes per year. The comma delineated ASCII output format allows for easy importing into popular spreadsheet programs such as Lotus 1-2-3 or Microsoft Excel. See Appendix D for sample data files.

2. GETTING STARTED

The following equipment will arrive with the Model LC-2x4 datalogger: (If any accessories are missing or damaged, please contact the factory.)

• Set of two alkaline D cell batteries.

• Set of four desiccant packs packaged with the batteries.

• Accessories:

Shipped with the 8002-4-1: Part #8002-10-RS232 comprising: a USB to RS-232 serial adapter cable, a RS-232 Communication Cable (DB-9F to 10-pin Bendix Male), a #3 Phillips head screwdriver, and a 3/32" flat head screw driver.

Shipped with the 8002-4-2: Part #8002-10-USB comprising: USB Communication Cable (USB-A to 10-pin Bendix Male) a #3 Phillips head screwdriver, and a 3/32" flat head screw driver.

Shipped with the 8002-4-3: USB Communication Cable (USB-A to 10-pin Bendix

Male), RS-485 Interface for PC, RS-485 patch cord

2.1 Transducer Installation

2.1.1 Cable Gland Models (8002-4-1, 8002-4-2, 8002-4-3)

1) Open the datalogger by unscrewing the four captive screws on the front of the

enclosure. Make sure that no dirt, water or other contaminants are allowed to enter the enclosure.

2) Loosen the nuts on the cable fittings and remove the white plastic dowels.

3) Thread the transducer cables through the cable fittings.

4) Connect the cable wires to the datalogger’s 5-pin internal terminal blocks, located on

the Multiplexer circuit board. (NOTE: The multiplexer board is mounted on the

right side of the enclosure. Do not connect any transducer cables to the terminal block located on the battery board.) Wire each conductor of the cable into the

correct position in the terminal block by pressing down on the corresponding orange tab at the back, inserting the conductor, and then releasing the orange tab. Refer to Table 1 for transducer wiring information. (See also Appendix B.)

Cable

Color

VW1+

Vibrating Wire +

RED

VW1-

Vibrating Wire -

BLACK

TH1+

Thermistor +

WHITE

TH1-

Thermistor -

GREEN

Analog Ground

(shield)

BARE

WIRE

VW2+

Vibrating Wire +

RED

VW2-

Vibrating Wire -

BLACK

TH2+

Thermistor +

WHITE

TH2-

Thermistor -

GREEN

Analog Ground

(shield)

BARE

WIRE

VW3+

Vibrating Wire +

RED

VW3-

Vibrating Wire -

BLACK

TH3+

Thermistor +

WHITE

TH3-

Thermistor -

GREEN

Analog Ground

(shield)

BARE

WIRE

VW4+

Vibrating Wire +

RED

VW4-

Vibrating Wire -

BLACK

TH4+

Thermistor +

WHITE

TH4-

Thermistor -

GREEN

Analog Ground

(shield)

BARE

WIRE

Terminal

Block Position

SHLD1 1

SHLD2 2

SHLD3 3

Channel Number

Description

Wire

SHLD4 4

5) Tighten the nuts on the cable fittings so that they securely grip the cables. This must

be done to ensure that water does not enter the enclosure. (Beware of overtightening, which may damage the plastic threads.)

2.1.2 10-pin Bulkhead Models (8002-4A-1, 8002-4A-2, 8002-4A-3)

Transducers are attached to the datalogger with 10-pin Bulkhead connectors. Align the grooves on the transducer connector (male), with the connector on the unit (female). Push the connector into place and then twist the outer ring of the male connector until it locks.

Table 1 - Transducer Cable Connections

2.2 Battery Installation

Install the batteries as follows: (For units manufactured prior to September 2018, refer to Appendix I.)

1) Open the device by unscrewing the four captive screws on the front of the enclosure. Make

sure that no dirt, water or other contaminants are allowed to enter the enclosure.

2) Install the batteries by aligning the positive (+) side of the D cells with the left side of the

battery holder. Push the batteries straight down into the holder.

Figure 1 - Battery Detail

3) The battery select switch (located to the right of the battery holder) is set to “Alkaline” at the

factory. If using lithium batteries, move the switch to the “Lithium” position.

2.3 Accessories

After the batteries have been installed:

1) Remove the desiccant packs from the plastic seal top bag they were shipped in and place

them inside the enclosure.

2) Reinstall the cover. Ensure that the rubber gasket clean and properly seated in the groove on

the underside of the cover. Tighten the screws a little at a time, working in a diagonal pattern. Make sure the cover seals tightly and evenly.

2.4 Earth Ground Installation

The LC-2x4 provides lightning protection in the form of gas tube surge arrestors. In order for these components to divert the energy from a lightning strike safely to ground, a good solid electrical connection to earth ground needs to be made. A grounding rod should be driven (or other suitable attachment to earth utilized) to ground the system and provide a path to earth in the event of a lightning strike. A 6' to 8' copper stake with appropriate large gauge wire (12 AWG or larger) connected to the LC-2x4 enclosure is suggested. The stake should be driven as close to the datalogger as possible, and to a depth of at least one meter (three feet). A copper grounding lug is supplied on the exterior of the LC-2x4 enclosure to provide connection to this wire from the grounding rod.

2.5 Software Installation and Setup

LogView is Graphical User Interface (GUI) software is used to communicate with the datalogger using a personal computer running a Microsoft Windows® operating system. Other general purpose communication programs (e.g., Windows HyperTerminal™) can also be used to communicate with the Model LC-2x4 via text-based commands. The LogView and USB drivers install program can be downloaded at www.geokon.com/software.

Perform the following steps to install LogView software for each computer that will connect to an LC-2x4. These instructions are for computers running Windows XP. The installation procedure is very similar for computers running Windows7, Windows 2000 and Windows 98. This installation procedure needs to be performed only once for each computer that will run LogView to communicate with an LC-2x4 datalogger.

NOTE: The USB drivers are only required for LC-2x4 models 8002-4-2 and the 8002-5 RS-485 Interface

Make sure that the two 1.5-volt D cell alkaline batteries are installed in the datalogger (See Section 2.2, “Battery Installation” for instructions) and that the LC-2x4 datalogger is not connected to the computer at this time.

2.5.1 LogView Installation

1) Using Windows Explorer, navigate to the extracted downloaded files and double

click on the file “start.bat” to start the install process.

2) Click “ >” when the Welcome window appears.

3) When the Choose Install Location window appears, choose a folder for the

LogView installation then click “Next>”.

4) When the Choose Start Menu Folder window appears, choose an appropriate

folder (default is Geokon) then click “Install”.

5) Click “Next >” when the Java Installation Complete window appears.

6) Click “Finish” when the Completing the LogView Setup Wizard window appears.

2.5.2 Launching LogView

Launching LogView can be accomplished two different ways. Double clicking on the desktop icon:

Or via the Windows Start button: “Programs → Geokon → LogView”

2.5.3 LogView Workspaces

When opening LogView for the first time, the user will be prompted to create a workspace name (see Figure 2). The workspace name can be any combination of letters and numbers and, ideally, will be descriptive in nature. See the LogView User’s Guide for more information on workspaces.

Figure 2 - Select Workspace Name

Once the workspace name has been selected, clicking on “Ok” causes LogView to prompt the user to choose or create a folder where all the workspace elements will be stored (see Figure 3). The folder location can be entered directly, e.g.,

C:\Workspaces\East Coast or the Browse button can be used to navigate to a folder

location or to create a new folder (see Figure 3). This workspace location will be stored in the LogView configuration for subsequent application access. Once workspaces are created, future user access is always by name.

Figure 3 - Select Workspace Folder

If no other is specified, a default folder path is displayed based on the system default workspace path combined with the new workspace name. After the folder path has been specified, either the default or user selected, clicking on “Ok” will display the main window of LogView (see Figure 4). On the left-hand side of the main window is the Project Explorer displaying the newly created workspace. The user can now add new project(s), datalogger(s) and sensor configurations to the workspace by right-clicking on the workspace and using the menu tools.

Figure 4 - LogView Main Window

2.5.4 Adding Projects to LogView Workspaces

Right-clicking on the “PRODUCTION” workspace brings up a context sensitive menu that allows the user to add projects to this workspace (using the “New→Project” menu selection). Select a name that makes sense for the real-world project this program will be used for. In this example “TestLoggers” was chosen as the project name (see Figure 5 below)

Figure 5 - LogView Main Window with new project

2.5.5 Adding Dataloggers to LogView Projects

Right-clicking on the “TestLoggers” project brings up a context sensitive menu (see Figure 6) that allows users to add dataloggers to their projects. Selecting New→Logger from the context menu causes the “Datalogger Settings” dialog to be displayed. Like Workspaces and Projects, Dataloggers can be assigned a unique human-readable name. For this example, “MyLogger” was chosen for the Datalogger name. For a complete description of all datalogger settings please see the LogView Online Help section on Datalogger Settings. For connection purposes, the relevant tab in this dialog is “Connection Options” (see Figure 7).

After physically connecting to a PC, all LC-2x4 dataloggers require a COM port to be identified in the “Connection Options”. Starting with firmware revision 3.1.X, LC-2x4 dataloggers can communicate at baud rates of 9600 and 115,200. Before this revision the datalogger baud rate was 9600 only; for these dataloggers, the default setting should not be changed (See Figure 7).

Figure 6 - LogView Context Menu

Figure 7 - Datalogger Settings, Connection Options

2.5.6 LC-2x4 Connection (8002-4-1, RS-232)

Connect the supplied LC-2x4 RS-232 Communications cable (S-8001-6) to the COM port of the LC-2x4 datalogger. The protective cap on the datalogger COM connector is removed by pushing in and turning. Plug the DB-9 end of the RS-232 Communications cable into the host computer’s RS-232 port (either internal or external via a USB to Serial converter). Proceed to Section 2.5.9, Connecting to a Datalogger with LogView.

2.5.7 LC-2x4 Connection (8002-4-2, USB)

Connect the supplied LC-2x4 USB Communications cable (COM-109) to the USB port of the LC-2 datalogger. The protective cap on the datalogger USB connector is removed by pushing in and turning. Plug the USB-A end of the USB cable into an available USB-2.0 port on the host computer. NOTE: On certain PCs with operating systems older than XP, Service Pack 3, the 80024-2 may require the installation of a driver to properly communicate with the PC. If the PC does not recognize the datalogger’s internal USB to serial converter then the driver may need to be installed by executing the program, CDMv2_xxxx, from the LogView Install folder. Proceed to Section 2.5.9, Connecting to a Datalogger with LogView.

2.5.8 LC-2x4 Connection 8002-4-3 (RS_485)

Make the COM port connection per Section 2.5.6 (RS-232) or 2.4.7 (USB), and then refer to Appendix F: Networking to establish communications.

Figure 8 - Datalogger Highlighted, Not Connected

2.5.9 Connecting to a Datalogger with LogView

1) With a Datalogger profile configured and selected in the Project Explorer (see Figure

8), click on the “Open Connect” button on the LogView Toolbar.

2) When connecting to a new Datalogger for the first time, the message below (see Figure

9) may be displayed after a few seconds. This is normal and is only an indication that the datalogger does not match the configuration created in the Project Explorer. Click on “Continue” to finish connecting to the datalogger.

3) Click on the “Upload Settings” button on the LogView Toolbar to synchronize the

datalogger with the LogView configuration (see Figure 10).

4) LogView is now connected and configured correctly for the LC-2x4 datalogger. Sensors

can now be added to the datalogger in a similar fashion as adding Dataloggers to Projects. Sensor settings are accessed via the context menu from the Project Explorer.

5) Always upload the new settings to the datalogger after changing its configuration in

LogView.

Figure 9 - Datalogger Connection Mismatch

Figure 10 - Datalogger Connected

2.5.10 Determining COM Port Numbers

When connecting an 8002-4-1 datalogger to a PC with an internal serial port(s) the COM Port number that LogView requires is usually COM1 or COM2 but, occasionally may be COM3 if the PC has more than one internal serial port. Figure 11 below illustrates that the PC has two serial ports, one internal (COM1) and the other via a USB to serial converter (COM13).

Figure 11 - PC Internal COM Port

When connecting an 8002-4-2 datalogger to a PC the COM Port number LogView requires can be any number and depends on how many other devices are attached to the PC like, internal serial ports and Bluetooth devices. Figure 12 below illustrates that the PC has three serial ports, one internal (COM1) and the other two via USB to serial converters (COM13 and COM3). One way to determine which COM port an 8002-4-2 datalogger is attached to is to disconnect the cable and see which COM device disappears from the Device Manager Ports list.

Figure 12 - Device Manager Ports List

In this case, COM3 is actually the 8002-4-2 datalogger and not a universally available serial port.

2.6 Communication Setup Example Using HyperTerminal

NOTE: If using a 8002-4-2 USB LC-2x4, it is important that the LC-2x4 first be connected to the computer’s USB port before attempting to communicate so that the LC-2x4 can be recognized by the computer as a virtual COM port.

Proceed with the following steps to connect with the datalogger using a terminal emulator program such as Microsoft Windows HyperTerminal™:

1) Launch HyperTerminal (Start → All Programs → Accessories → Communications → HyperTerminal). If running under Vista or newer, contact Geokon for Geokon’s Terminal Window Software.

2) Enter a name for the New Connection and click OK (see Figure 13):

Figure 13 - HyperTerminal Connection Description

3) In the Connect Using window, select the appropriate COM port (see Figure 14):

Figure 14 - COM Port Selection

4) In the COM Properties window, configure the COM port (see Figure 15):

Figure 15 - COM Port Settings

8002-4-1 (RS-232): Configure the COM port (typically COM1 or COM2) as 9600 Bits per second, 8 Data bits, no Parity, 1 Stop bit, no Flow control.

8002-4-2 (USB): Configure the new COM port that is added when the LC-2x4 is connected as 9600 Bits per second, 8 Data bits, no Parity, 1 Stop bit, no Flow control.

5) Click Apply then OK.

6) Press <ENTER> <ENTER> to wake the datalogger from sleep. The datalogger returns the power up prompt:

Hello. Press "?" for Help. *

Note: If no characters are received in 15 seconds the datalogger (non-networked) will return to its low power sleep mode. Press <ENTER> <ENTER> to wake it again.

Note: When network commands are enabled and RS-485 is being used, the address must be sent before the respective datalogger will respond. See Sections 3.21 thru

3.25 for additional information.

1) Type ? <ENTER> to display the Help list. See Section 3 for detailed information on all the

commands listed. Note: All commands must be entered in capital letters.

*? Command Description

-----------------------------------------------C View current Clock CSmm/dd/yy/hh:mm:ss Clock Set DEFAULT Load factory DEFAULT gage settings DF Date Format(0=julian,1=month,day) DL Display DataLogger type Dnnnnn Display nnnnn arrays from pointer E End communications and go to sleep

Gnn/c/tt/szzzzzz/sffffff/soooooo (or Gnn/c/tt/saaaaaa/sbbbbbb/scccccc) Gage information, where;

nn = Channel # c = Conversion Type(L/P) tt = Gage Type

For Linear (L) Conversion: szzzzzz = zero reading with sign sffffff = gage factor with sign soooooo = offset with sign

For Polynomial (P) Conversion: saaaaaa = polynomial coefficient A with sign sbbbbbb = polynomial coefficient B with sign scccccc = polynomial coefficient C with sign

IDdddddddddddddddd View current ID,set to dddddddddddddddd Ln/lllll/iii View Log intervals/change n interval lllll = length iii = iterations of interval LD,LE Log intervals Disable, Enable M,MD,ME Monitor status, Disable, Enable MXS Display Multiplexer Setup MX# Select Multiplexer Configuration(4,16) N Display Next time to read NAddd Network Address (1-256) NS,ND,NE Network Status, Disable, Enable Pnnnnn Position array pointer to nnnnn R Reset memory RESET RESET processor S,SS Datalogger Status, System Status SCnnnnn View SCan interval/enter nnnnn interval SPhh:mm StoP logging, hh:mm = stop time SR Synchronize Readings(0=not synch'd,1=synch'd) SThh:mm STart logging, hh:mm = start time

SV Software Version TEST System Test TF Time Format (0 = hhmm, 1 = hh,mm) Tnn/t Thermistor information, where;

nn = Channel # t = Thermistor Type

0=standard 1 = high temp BR55A822J 2 = high temp 103JL1A) TR,TR0 display TRap count, zero TRap count VL display Lithium cell Voltage V3 display 3V Battery Voltage V12 display 12V Battery Voltage WFn Wrap Format(0=don't wrap memory,1=wrap memory) X Single Reading - NOT stored

All of these commands are executed by typing with the correct syntax and pressing <ENTER>. If the command has not been entered correctly, the datalogger will respond with an asterisk only.

For example:

*L7/100/255 *

The datalogger will respond to correctly entered commands by displaying the modified values. The purpose and syntax of each of these commands are discussed in the following sections.

3. COMMAND LIST

3.1 “BRnnn”- Set or Display the Current Baud Rate

This command is not displayed in the help text (?<ENTER>). Displays or sets the current baud

rate. Valid numbers for “nnn” are 9 (9600 baud) or 115 (115,200 baud). The example below

changes the baud rate to 9600 with no confirmation.

*BR9

3.2 “C” - Display Current Clock Settings

Displays the current datalogger real-time clock settings. The CS command section explains how

to adjust the clock settings.

*C Date: 02/21/07 Time: 10:43:08 *

3.3 “CSmm/dd/yy/hh:mm:ss” - Set the Internal Clock

Set the datalogger’s internal real time clock; mm represents the month, dd the day of the month,

yy the year, hh the hours, mm the minutes, and ss the seconds. Illegal combinations will be

ignored (e.g., CS02/30/07 or CS///12:60). Fields that are left blank will not be changed (e.g.,

CS//07 to only change the year).

*CS///10:45:00 Date: 02/21/07 Time: 10:45:00 *

Note: If logging is currently started and the clock is changed, a restart of the scan interval or log

interval table will occur.

3.4 “DEFAULT” – Load Factory Default Settings

The DEFAULT command will reload the datalogger’s channel and gage settings to the factory

default settings, along with the reading synchronization and memory wrap settings. This results

in:

All channels Enabled All Gage Types set to 1 All Zero Readings set to 0.00000 All Gage Factors set to 1.00000 All Gage Offsets set to 0.00000 All channels use linear conversion Scan interval = 10S All readings synchronized to the top of the hour

Memory will wrap when full and continue logging

All Thermistors set to standard temperature

*DEFAULT

This will load all channels with factory default gage settings!

Are you sure(Y/N)?Y

All channels restored to factory default gage settings.

3.5 “DF” - Display or Set Date Format

This setting determines how the date information will be displayed in the array when the monitor mode is active or arrays are displayed from memory. Entering DF displays the current date format. Entering DF0 sets the date format to julian. Entering DF1 sets the date format to month,day. The default date format display is Julian (decimal) day.

*DF Date format is julian.

*DF1 Date format is month,day.

*DF0 Date format is julian.

3.6 “DL” – Display Current Mode

Displays the current datalogger mode setting.

*DL LC-2x4

3.7 “Dnnnn” - Display Arrays Forward from User Position

Use the D command to display arrays forward from the User Position for verification or collection. The updated memory pointers are displayed by this command.

*P1

MS:3146 OP:3147 UP:1

*D5

2007,11,23,17,52,43,3.10,25.51,9039.950,-999999.0,-999999.0,-999999.0,23.2,-99.0,

-99.0,-99.0,1

2007,11,23,17,53,43,3.10,24.77,9040.149,-999999.0,-999999.0,-999999.0,23.2,-99.0,

-99.0,-99.0,2

2007,11,23,17,54,43,2.97,24.42,9040.319,-999999.0,-999999.0,-999999.0,23.2,-99.0,

-99.0,-99.0,3

2007,11,23,17,55,43,2.98,24.22,9039.622,-999999.0,-999999.0,-999999.0,23.1,-99.0,

-99.0,-99.0,4

10666

2007,11,23,17,56,43,2.98,23.96,9038.542,-999999.0,-999999.0,-999999.0,22.7,-99.0,

-99.0,-99.0,5

MS:3146 OP:3147 UP:6*

MS represents the Memory Status of the datalogger. This number indicates how many arrays

have been written to memory. In this example, MS:3146 indicates that 3146 out of 10666 arrays

have been written to memory. OP:3147 indicates that the next memory location to be written to

is location 3147. UP:1 indicates that the memory location currently being pointed to (via the P

command) is memory location one. Use the D command to display arrays forward from the User

Position. In this case, D5 displays the arrays stored at memory locations 1, 2, 3, 4, and 5, and

leaves the memory pointer at memory location 6. Figure 16 illustrates the ring memory scheme.

Figure 16 - Order of Array Usage

OP represents the Output Position that the next array will be written to.

UP represents the User Position. This value is updated by D and P commands. The user can

display arrays from this position or re-position to another array.

The format is comma delineated ASCII, identical to that displayed when the Monitor mode is

active. See Appendix D for a sample data file. See Appendix C in regards using the D command

to collect data. When the array display is finished the memory pointers are displayed.

3.8 “E” - Low Power Sleep Mode

Returns the datalogger to its low power sleep mode (readings continue to be logged and

displayed in this mode). This command should always be used when finished communicating

with the datalogger to ensure the lowest power consumption. However, the datalogger (non-

networked) will enter sleep mode regardless if no command is received in a period of

approximately 15 seconds.

To return from the low power operating mode press <ENTER> <ENTER>. The datalogger

responds:

Hello. Press "?" for Help. *

Note: When network commands are enabled the address must be sent before the respective datalogger will respond. See Sections 3.21, 3.23, and 3.24 for additional information.

3.9 “Gnn/c/tt/szzzzzz/sffffff/soooooo” or “Gnn/c/tt/saaaaaa/sbbbbbb/scccccc” – Gage Settings

The G command is used to set up each of the four datalogger channels. All of the transducer parameters, including the type of conversion (linear or polynomial) and whether a channel is enabled or disabled are set with this command. Refer to Table 2 and Table 3 for a description of each gage type.

The syntax for this command is:

Linear Conversion: Gnn/c/t/szzzzzz/sffffff/soooooo Where:

nn = Channel # (Valid entries are 1, 2, 3, and 4 for the LC-2x4) c = Conversion Type(L/P) where L=Linear and P=Polynomial t = Gage Type: 0: Channel Disabled (will display “---“) 1: VW Gage Type 1 2: VW Gage Type 2 3: VW Gage Type 3 4: VW Gage Type 4 5: VW Gage Type 5 6: VW Gage Type 6 szzzzzz = zero reading with sign sffffff = gage factor with sign soooooo = offset with sign

Example: To setup Channel 1 as a model 4000 VW Strain Gage with a Zero Reading of 490 digits, a Gage Factor of –0.0015 and a Gage Offset of zero, enter:

G1/L/3/490/-0.0015/0 <ENTER>

The LC-2x4 will return:

CH 1: ENABLED GT: 3 ZR: 490.0000 GF: -0.00150 GO: 0.00000

*Note: If selecting Gage Type 0 to disable the channel, the LC-2x4 will only return “*”. Use the MXS command (Section 3.18) to view the disabled channels.

When using linear conversion (L) of the instrument reading, the G command is used to select the gage type and enter the gage zero reading, gage factor, and gage offset.

Linear Conversion is described further as follows:

szzzzzz represents the zero reading for the transducer being read, sffffff represents the multiplier

NOTE: It is possible that a new datalogger might be used with an older sensor or vice versa and because of

(calibration or gage factor) that will be applied to the reading to convert to engineering units and

soooooo is the offset that will be applied to the gage reading. The zero reading, gage factor and

offset can be entered with a sign and decimal point. The maximum number of digits, including

sign and decimal point is 15. The entered value will display to a maximum of five places to the

right of the decimal point.

For all vibrating wire instruments (Gage Types 1-6), manufactured after November 2, 2011 and

for all dataloggers (8002-4-X) with a firmware revision of 3.1.X and up, the basic formula for

calculation of displayed and stored values is as follows:

Display = ((CurrentReading - ZeroReading) × Multiplier) + Offset

Equation 1 - Displayed Gage Reading using Linear Conversion

equation differences the output might be negative. As of LogView version V2.1.1.X, an additional sensor configuration parameter is now required, allowing LogView to compensate for old versus new sensor/datalogger combinations. This new parameter: Output Calculation, determines whether the sensor was calibrated using the formula: G x (R available from the calibration certificate supplied with each sensor. Please see the LogView User’s Guide or the online help section, “Sensor Settings” available while running LogView.

NOTE: In Equation 1 (above), the “CurrentReading” is frequently referred to as R1 while the

“ZeroReading” is referred to as R0

Polynomial Conversion:

Gnn/c/tt/saaaaaa/sbbbbbb/scccccc

Where:

nn = Channel # (Valid entries are 1, 2, 3, and 4 for the LC-2x4) c = Conversion Type(L/P) t = Gage Type: 0: Channel Disabled (will display “---“) 1: VW Gage Type 1 2: VW Gage Type 2 3: VW Gage Type 3 4: VW Gage Type 4 5: VW Gage Type 5 6: VW Gage Type 6

saaaaaa = polynomial coefficient A with sign sbbbbbb = polynomial coefficient B with sign scccccc = polynomial coefficient C with sign

When using polynomial conversion (P), the G command is used to select the gage type and enter the three polynomial coefficients, A, B and C.

Polynomial Conversion is described further as follows:

– R1) or G x (R1 – R0). As with the gage factor, this information is

Geokon Model

Gage Type

Description

4000 3 Strain Gage

4100 1 Strain Gage

4200 3 Strain Gage

4204 6 Strain Gage

4202/421X

Strain Gage

4300BX

BX Borehole Stressmeter

4300EX

EX Borehole Stressmeter

4300NX

NX Borehole Stressmeter

4400

Embedment Jointmeter

4420 1 Crackmeter

4450

Displacement Transducer

4500 1 Piezometer

4600/4651/4675

Settlement Systems

4700

Temperature Transducer

4800

Pressure Cell

4850

Low Pressure Piezometer

4900 1 Load Cell

4910/4911/4912

Load Bolts

saaaa represents polynomial coefficient A, sbbbb represents polynomial coefficient B and scccc polynomial coefficient C. The polynomial coefficients can be entered with a sign and decimal point. The maximum number of digits, including sign and decimal point is 15. The entered value will display to a maximum of five places to the right of the decimal point.

For the vibrating wire instruments (Gage Types 1-6), the basic formula for calculation of displayed and stored values is:

Display = (CurrentReading2 × A) + (CurrentReading × B) + C

Equation 2 - Displayed Gage Reading using Polynomial Conversion

NOTE: When using the Polynomial conversion method, the default reading units for a vibrating wire instrument is the frequency squared multiplied by 10 when A is entered as “0”, B is “1” and C is “0”. However, typical calibration units for vibrating wire instruments are frequency squared multiplied by 10 units multiply the A coefficient by 1,000,000 and the B coefficient by 1000. The A and B coefficients can be found on the supplied calibration certificate. The C coefficient should be calculated based on an actual field reading. The above multiplication is only necessary if the datalogger is being set up via text commands (see Section

2.6) AND the gage conversion is set for polynomial. When using LogView to set up the datalogger configuration, the multiplication is performed by LogView. Refer to the appropriate sensor manual for more information on how to calculate the C coefficient.

-6

. For example, an instrument reading 3000Hz will output a value of “9.000”

-3

. To adjust for this discrepancy between LC-2 expected units and calibration

Table 2 - Vibrating Wire Gage Types

Type

Measurement

Type

Description

Output

Units

Linear Range

Polynomial

Range

Channel Disabled

Vibrating Wire

Middle frequency sweep, 1400-3500 Hz

Digits

1960 to 12250

1.960 to 12.250

Vibrating Wire

High frequency sweep, 2800-4500 Hz

Digits

7840 to 20250

7.840 to 20.250

Vibrating Wire

Very low frequency sweep, 400-1200 Hz

Digits

160 to 1440

0.160 to 1.440

Vibrating Wire

Low frequency sweep, 1200-2800 Hz

Digits

1440 to 7840

1.440 to 7.840

Vibrating Wire

Very high frequency sweep, 2500-4500 Hz

Digits

6250 to 20250

6.250 to 20.250

Vibrating Wire

Low frequency sweep, 800-1600 Hz

Digits

640 to 2560

0.640 to 2.560

psi 1 .036127

.43275

.0014223

1.4223

.49116

.019337

14.696

.014503

14.5039

.14503

145.03

"H2O

27.730 1 12

.039372

39.372

13.596

.53525

406.78

.40147

401.47

4.0147

4016.1

'H2O

2.3108

.08333

.003281

3.281

1.133

.044604

33.8983

.033456

33.4558

.3346

334.6

mm H20

704.32

25.399

304.788

1000

345.32

13.595

10332

10.197

10197

101.97

101970

m H20

.70432

.025399

.304788

.001 1 .34532

.013595

10.332

.010197

10.197

.10197

101.97

"HG

2.036

.073552

.882624

.0028959

2.8959

.03937

29.920

.029529

29.529

.2953

295.3

mm HG

51.706

1.8683

22.4196

.073558

73.558

25.4 1 760

.75008

750.08

7.5008

7500.8

atm

.06805

.0024583

.0294996

.0000968

.0968

.03342

.0013158

.0009869

.98692

.009869

9.869

mbar

68.947

2.4908

29.8896

.098068

98.068

33.863

1.3332

1013.2

1000

10000

bar

.068947

.0024908

.0298896

.0000981

.098068

.033863

.001333

1.0132

.001 1 .01

kPa

6.8947

.24908

2.98896

.0098068

9.8068

3.3863

.13332

101.320

100 1 1000

MPa

.006895

.000249

.002988

.00000981

.009807

.003386

.000133

.101320

.0001

.001

Table 3 - Gage Type Descriptions

The “Digits” calculation for the Vibrating Wire transducer output when using linear conversion is based on this equation:

Digits = frequency2 × 10

-3

Equation 3 - Digits Calculation using Linear Conversion

The “Digits” calculation for the Vibrating Wire transducer output when using polynomial conversion is based on this equation:

Digits = frequency2 × 10

-6

Equation 4 - Digits Calculation using Polynomial Conversion

Frequency, in the above equations, represents the resonant frequency of vibration of the wire in the transducer (in Hertz) as determined by the datalogger.

To convert calibration factors (pressure transducers are usually psi per digit) to other engineering units consult Table 4.

NOTE: In LogView Sensor Settings, when output units are set different than inputs units, a conversion factor (see Table 4) is automatically applied to the gage factor of each sensor. See the LogView User’s Guide for more information on Sensor Settings.

From →

↓

psi

"H2O

'H2O

mm H20

m H20

"HG

mm HG

atm

mbar

bar

kPa

MPa

Table 4 - Engineering Units Multiplication Factors

3.10 “IDdddddddddddddddd” - Display or Set Datalogger ID

The ID is a 16-character string that can be used to identify a datalogger and the data that is transmitted by it. If an ID is entered it will be transmitted as the first element in each array of data. For example:

*ID Datalogger ID: *ID Datalogger ID: *IDDatalogger#1 Datalogger ID:Datalogger#1 *ST Logging started. Datalogger#1,2007,11,25,11,25,16,2.92,20.93,9.020,

-999999.0,-999999.0,-999999.0,22.0,-99.0,-99.0,-99.0,1

Datalogger#1,2007,11,25,11,25,21,2.92,20.95,9.061,

-999999.0,-999999.0,-999999.0,22.0,-99.0,-99.0,-99.0,2 Datalogger#1,2007,11,25,11,25,26,2.92,21.04,9.045,

-999999.0,-999999.0,-999999.0,22.0,-99.0,-99.0,-99.0,3 Datalogger#1,2007,11,25,11,25,31,2.92,21.09,9.014,

-999999.0,-999999.0,-999999.0,22.0,-99.0,-99.0,-99.0,4

To clear the ID enter a <SPACE> character as the ID. When the ID is cleared the arrays from the logger will display beginning with the year. To display the current ID enter ID <ENTER>.

3.11 “L” - Display Log Intervals

Displays all six log intervals.

Log Intervals List

-----------------------------------------------Interval #1 Length: 10 Iterations: 100 Interval #2 Length: 20 Iterations: 90 Interval #3 Length: 30 Iterations: 80 Interval #4 Length: 40 Iterations: 70 Interval #5 Length: 50 Iterations: 60 Interval #6 Length: 60 Iterations: 50

This command has no effect on the current interval (scan or log). If logging is started and log intervals are enabled the iterations value will be followed by the number of readings left at that interval. For example:

Interva

Length

Iterations

Elapsed Time

10 seconds

1 minute

30 seconds

10 minutes

60 seconds

100

100 minutes

300 seconds

200

1000 minutes

2400 seconds

250

10000 minutes

3600 seconds

endless

Log Intervals List

-----------------------------------------------Interval #1 Length: 10 Iterations: 100/96 Interval #2 Length: 20 Iterations: 90/90 Interval #3 Length: 30 Iterations: 80/80 Interval #4 Length: 40 Iterations: 70/70 Interval #5 Length: 50 Iterations: 60/60 Interval #6 Length: 60 Iterations: 50/50

The above list indicates that there are 96 iterations of interval #1 left before interval #2 begins execution. See Section 3.12 to modify intervals.

3.12 “Ln/lllll/iii” - Define Length and Iteration of Interval

Define the length and iteration of any interval in the list; n refers to the number of the interval (#1-#6), lllll is the length (3-86400), and iii is the iterations (0-255), or the number of readings that will be taken at that interval. If 0 is entered for the iteration value that interval will execute indefinitely. Illegal entries will be ignored (e.g., L7/10/100 or L1/1000/500). If the entry is correct the modified interval will display.

*L1/100/0 Interval #1 Length: 100 Iterations: 0 *

If log intervals are enabled and logging was started, any change to the interval list will result in a restart of the table!

Table 5 lists possible logarithmic interval lengths and iterations. Any combination of lengths and iterations is permissible.

Table 5 - Logarithmic Intervals List

3.13 “LD” - Disable Log Intervals

If logging is started (ST command) it will continue based on the scan interval entry (SC command).

*LD Log intervals disabled. *Datalogger#1,2007,11,25,11,41,17,2.92,20.63,9.055,

-999999.0,-999999.0,-999999.0,22.5,-99.0,-99.0,-99.0,549 *

3.14 “LE” - Enable Log Intervals

If logging is started (ST command) it will continue based on the interval lengths and iterations of the log list (SC command).

*LE Log intervals enabled.

*Datalogger#1,2007,11,25,11,42,56,2.92,21.51,9.042,

-999999.0,-999999.0,-999999.0,22.5,-99.0,-99.0,-99.0,622

3.15 “M” - Display Current Monitor Mode Setting

The monitor mode will display arrays as they are stored in memory in the course of logging. This is useful where a test is being conducted and immediate display of logged values would be helpful. Use the “MD” and “ME” commands (next two sections) to disable or enable the use of the Monitor mode.

*M Monitor mode enabled. *

3.16 “MD” - Disable Monitor Mode

Arrays will not be sent to the host computer as they are logged.

*MD Monitor mode disabled. *

3.17 “ME” - Enable Monitor Mode

Arrays will be sent to the host computer as they are logged.

*ME Monitor mode enabled. *

3.18 “MXS” – Display Multiplexer Status

Displays the Multiplexer Status.

*MXS

LC-2MUX 4-Channel Multiplexer Setup:

CH 1: ENABLED GT: 3 ZR: 0.00000 GF: 1.00000 GO: 0.00000 TH: 0

CH 2: ENABLED GT: 1 ZR: 0.00000 GF: 1.00000 GO: 0.00000 TH: 0

CH 3: ENABLED GT: 1 ZR: 0.00000 GF: 1.00000 GO: 0.00000 TH: 0

CH 4: ENABLED GT: 1 ZR: 0.00000 GF: 1.00000 GO: 0.00000 TH: 0

3.19 “MXn” – Set the Maximum Number of Channels

Set the maximum number of channels of the multiplexer. Can be set to 4 or 16. Set to 4 by the factory for all LC-2x4 dataloggers.

*MX4 4 Channel Multiplexer Selected. *

3.20 “N” - Display Next Measurement Cycle

Displays the next time the datalogger will initiate a measurement cycle. If the start time (ST command) has been set, this command will display when logging will begin.

*ST12:00

Logging will start at: 12:00:00 *N Next time to read: 12:00:00 *

3.21 “NA” - Display Network Address

Displays the current network address.

*NA Network address: 1 *

When network recognition is enabled, this number (preceded by the # character) must be entered for the respective datalogger to respond. The following example illustrates communication with two different dataloggers on the RS-485 network.

<ENTER> <ENTER> #1<ENTER> Network address: 1 *NA Network address: 1 *E

<ENTER> <ENTER> #2<ENTER> Network address: 2 *NA Network address: 2 *E

3.22 “NAddd” - Set Network Address

Sets the current network address to any address between 1 and 256.

*NA10 Network address: 10 *

<ENTER> <ENTER> #1<ENTER> Network address: 1 *NA Network address: 1 *E

<ENTER> <ENTER> #10<ENTER> Network address: 10 *NA Network address: 10 *E

NOTE: If connected directly to the datalogger via USB and networking is enabled, the datalogger will respond with the * prompt only.

NOTE: The network address cannot be changed while networked. Direct connect to the datalogger via USB in order to change the network address.

3.23 “ND” - Network Disable

Disables networking of two or more LC-2x4 dataloggers.

*ND Network recognition disabled.

3.24 “NE” - Network Enable

Enables networking of two or more LC-2x4 dataloggers.

*NE Network recognition enabled.

Note: If a networked LC-2x4 is connected via the RS-232 or USB port, connection to the datalogger can be made directly without the need to enter the correct datalogger address. This can be helpful if the network address is unknown and the datalogger is network enabled.

3.25 “NS” - Display Network Status

Displays the current network status.

*NS Network recognition disabled. *

Or;

*NS Network recognition enabled. *

3.26 “Pnnnn” - Set User Position Memory Pointer

Type P and a number between 1 and 10666 to position the pointer. Arrays can then be displayed (D command) from the new position. The updated pointers will display after entering a valid position.

*P1 MS:3200 OP:1567 UP:1 *

3.27 “R” - Reset Memory Pointers

Reset memory pointers to default settings. Gage and interval settings, as well as the real-time clock settings, are not affected by this command. User will be asked to verify before executing. Press Y to continue, any other key to abort.

*R Are you sure(Y/N)?Y Memory cleared. *

Note: This command does not erase memory. If the need arises to recover data that was previously taken, take one or more readings and then position the memory pointers via the P and D commands to recover previously taken readings

3.28 “RESET” - Reboot the LC-2 Microprocessor

All stored readings and settings, as well as the ID and real-time clock settings are not affected by this command.

*RESET Resetting... RESET COMPLETE *

3.29 “S” – Display Status

Displays the datalogger Status.

*S MS:1004 OP:1005 UP:1004 4 Channel Multiplexer Selected. Scan interval: 15 second(s). Logging stopped. Log intervals disabled. Monitor mode enabled. *

Line

Description

Manual

Sections

Status of memory pointers

3.7, 3.26 2 Multiplexer Type

3.18 3 Scan interval setting

3.30 4 Start/Stop status

3.32, 3.34

Stop time (optional)

3.32 6 Log interval status

3.13, 3.14

Monitor mode status

3.15, 3.16, 3.17

Line

Description

Trap Count (Communication errors counter)

Current network address

Current network status

Current time format configuration.

Current date format configuration.

Table 6 - S Command Information

3.30 “SCnnnnn” - Set Scan Interval

Enter the scan interval, in seconds. Range of entry is 3 to 86400 and is dependent on the number and type of transducers connected. Only whole numbers are accepted. Typing SC with no value returns the current setting only

*SC Scan interval: 60 second(s). *SC300 Scan interval: 300 second(s).

3.31 “SS” - Display System Status

Displays the System Status of the datalogger.

*SS Trap count: 0 Network address: 1 Network recognition disabled. Time format is hh,mm. Date format is month,day. *

Table 7 - SS Command Information

3.32 “SPhh:mm” - Stop Logging

Stop the datalogger logging values; hh is the hour (24-hour format) of the day to stop and mm the minutes. The time entry is optional.

*SC60 Scan interval: 60 second(s). *ST Logging started.

Datalogger#1,2007,11,25,14,10,05,2.94,23.99,9.071,---,---,

---,22.9,---,---,---,1

*SP12:00 Logging will start at: 15:13:46 Logging will stop at: 12:00:00 *

Note that when SPhh:mm is issued, the datalogger responds with the time of the next reading along with the time at which logging will stop.

3.33 “SR” - Synchronize Readings

Synchronize readings to the top of the hour. If enabled (default) via the SR1 command, then all readings after the first reading will synchronize to the top of the hour:

*SR1 Readings are synchronized to the top of the hour. *ST Logging started. 2008,318,1314,41,3.50,24.45,-8961.077,-999999.0,-999999.0,

-8444.892,23.1,-99.0,23.8,23.9,6645

*2008,318,1314,45,3.50,24.57,-8961.276,-999999.0,-999999.0,

-8445.080,23.2,-99.0,23.8,23.9,6646 2008,318,1315,0,3.50,24.86,-8960.023,-999999.0,-999999.0,

-8445.035,23.2,-99.0,23.8,23.9,6647

*SR0 Readings are not synchronized to the top of the hour. *ST Logging started. 2008,318,1316,31,3.50,24.39,-8960.209,-999999.0,-999999.0,

-8445.080,23.3,-99.0,23.8,23.9,6648

*2008,318,1316,46,3.50,24.80,-8960.090,-999999.0,-999999.0,

-8445.092,23.3,-99.0,23.8,23.9,6649

*2008,318,1317,1,3.50,24.80,-8961.173,-999999.0,-999999.0,

-8445.302,23.4,-99.0,23.8,23.9,6650

3.34 “SThh:mm” - Start Logging

Start the datalogger logging values; hh is the hour of the day (24-hour format) to start and mm the minutes. The time entry is optional. Entry is ignored if logging is already started (unless a time is entered).

*ST Logging already started! *ST11:00 Logging will start at: 11:00:00 *

3.35 “SV” - Display Software Version

Returns the software version of the datalogger’s operating system software. Consult the factory to check on latest versions available.

*SV Software version: 3.7.0 *

3.36 “TEST” - Perform Internal Self-Tests

Initiates a set of internal self-tests that are performed at the factory during final test.

*TEST

LC-2MUX TEST MENU:

SELECTION TEST

0 INTERNAL EEPROM 1 EXTERNAL EEPROM BANK 1 2 EXTERNAL EEPROM BANK 2

3 EXTERNAL EEPROM BANK 3

4 EXTERNAL EEPROM BANK 4 5 EXTERNAL EEPROM BANK 5 6 EXTERNAL EEPROM BANK 6 7 ALL EEPROM

8 +5X_X

9 RTC 32KHz

A EXTERNAL INPUT (GAGE TYPE 1)

B EXTERNAL INPUT (GAGE TYPE 2) C EXTERNAL INPUT (GAGE TYPE 3)

D EXTERNAL INPUT (GAGE TYPE 4)

E EXTERNAL INPUT (GAGE TYPE 5)

X EXIT TEST MENU

ENTER SELECTION:

Selection

Description

Test the Configuration memory bank

Test Readings 1-1777 memory bank

Test Readings 1778-3554 memory bank

Test Readings 3555-5331 memory bank

Test Readings 5332-7108 memory bank

Test Readings 7109-8885 memory bank

Test Readings 8886-10666 memory bank

Test all memory banks

Turn on System power supplies

Test the 32.768 RTC timebase

External Input with Gage Type 1 filter

configuration

External Input with Gage Type 2 filter

configuration

External Input with Gage Type 3 filter

configuration

External Input with Gage Type 4 filter

configuration

External Input with Gage Type 5 filter

configuration

Exit and return to normal operations

Table 8 - TEST Menu Information

3.37 “TF” - Display or Set Time Forma

Displays the current time format display option setting. This setting determines how the time information will be displayed in the array when the Monitor mode is active (see Section 3.15, “Display Current Monitor Mode Setting”) or arrays are being displayed from memory. Entering TF alone returns the current time format. Entering TF0 sets the time format to hhmm. Entering TF1 sets the time format to hh,mm. The default time format display is hhmm.

*TF

Time format is hh,mm. *TF0 Time format is hhmm. *TF1 Time format is hh,mm. *

3.38 “Tnn/t” – Set Thermistor Type

Enter the channel’s (nn) thermistor type (t). This command allows a specific thermistor to be assigned to each individual channel (generally the external thermistor that is incorporated into the VW gage). Entering T1/0 sets the external thermistor type of Channel 1 to the standard 3KΩ@25ºC NTC (default). For example, entering T2/1 sets the external thermistor type of Channel 2 to the high temperature BR55KA822J 8.22KΩ@25ºC NTC thermistor. Entering T3/2 sets the external thermistor type of Channel 3 to the high temperature 103JL1A 10KΩ@25ºC NTC thermistor.

T1/0: CH 1: ENABLED GT: 1 ZR: 0.00000 GF: 1.00000 GO: 0.00000 TH: 0

T2/1: CH 2: ENABLED GT: 1 ZR: 0.00000 GF: 1.00000 GO: 0.00000 TH: 1

T3/2: CH 3: ENABLED GT: 1 ZR: 0.00000 GF: 1.00000 GO: 0.00000 TH: 2

3.39 “TR” - Display Current Trap Count

The trap counter is a register that keeps track of the number of times that the internal processor has detected a communications error. This is a useful register to check if communication problems are suspected.

3.40 “TR0” - Reset Trap Count

Reset the TRap count register to zero.

3.41 “VL” – Display Coin Cell Voltage

The internal 3V lithium coin-cell is used to supply power to the real-time clock circuit. The 3V lithium coin cell life is rated at 10 years minimum.

*VL

Lithium Cell Voltage = 2.92V

3.42 “V3” – Display the D Cell Battery Voltage

Displays the three-volt D cell battery pack voltage. Replace the batteries when this voltage is less than 1.8-volts.

*V3 3V Battery Voltage = 2.93V *

3.43 “V12” – Display the External Battery Voltage

Displays the external 12-volt battery voltage. Replace or recharge the battery when this voltage is less than six volts.

*V12 12V Battery Voltage = 12.33V *

3.44 “WF” - Display Current Wrap Format

Memory “wrapping” means that once the memory has filled, the datalogger will continue taking readings and overwrite the stored values in a circular fashion (see Section 3.7, “Display Arrays Forward from User Position”).

When the wrap format is set to 0, logging will stop once the memory becomes full. This is useful if critical data is stored and it must not be inadvertently overwritten and lost.

When the wrap format is set to 1, logging will continue when the memory becomes full and the original stored values will be overwritten. With this setting, logging will continue indefinitely until told to stop with the SP command, the programmed stop time has been reached, or the battery has fallen to 1.6-volts.

*WF Logging will not stop when memory is full *WF0 Logging will stop when memory is full *WF1 Logging will not stop when memory is full *

3.45 “X” - Take Immediate Reading

Takes and displays one reading, but do not store this reading in memory. Useful if interested in obtaining a reading at the moment, without interrupting or affecting the current logging schedule.

MS:3 OP:4 UP:3

Datalogger#1,2007,11,25,13,11,39,2.93,23.59,9.060,---,---,---,22.8,---,---,---

MS:3 OP:4 UP:3

Note: In this example, Channels 2, 3, and 4 are disabled.

Battery

Type

Battery

Capacity

4 Second

Scan Rate

1 Minute

Scan Rate

1 Hour

Scan Rate

1 Day

Scan Rate

Lithium

19 AHr

54 hours

128 days

≥1 year

≥4 years

Alkaline

14 AHr

20 hours

47 days

≥6 months

≥2 years

Carbon-Zinc

5 Ahr

6 hours

16.5 days

≥3 months

≥1 year

4. MAINTENANCE

While the Model LC-2x4 Datalogger is designed to operate in field environments, nevertheless there are some basic maintenance procedures that should be followed to insure maximum reliability and functionality.

4.1 Cleaning

The outside of the box can be cleaned using a cloth dampened with soap and water. DO NOT USE ANY TYPES OF SOLVENTS OR SCOURING AGENTS!

The connector sockets can be cleaned using a small stiff brush (small painters brush) dipped in soap and water. The sockets are water resistant; therefore, the internal electronics will not be adversely affected by them filling with water or other liquids. Be aware however, readings could be affected by shorting or other effects of an improper connection due to fluids being present in the connector. Dry connections thoroughly before using.

4.2 Batteries

When the unit is not in use, especially for extended periods of time, the D cells should be removed to prevent damage due to leakage. The warranty does not cover damage due to battery leakage. The table below details the approximate operating times for the various types of D cell batteries that can be used with the Model LC-2x4.

Table 9 - Approximate Operating Times

The above table assumes a constant temperature environment of 25 °C (not field conditions!). Battery life is shortened by temperature extremes. If the datalogger is continuously connected to an active computer’s USB port, all operating power will be supplied via the USB port. As soon as USB power is lost, the datalogger will immediately switch over to its internal 3V (or external 12V) battery pack.

Batteries should be replaced when the measured voltage drops below 1.8 VDC (internal 3V battery) or 6V (external 12V battery). The datalogger electronics will stop the datalogger from logging and disable RS-485 communications if the battery goes below 1.6 VDC (internal 3V battery) or 5.5V (external 12V battery). In this event, a new set of batteries must be installed (or USB connection must be made) before the datalogger becomes operable again. All data and operating parameters are retained when removing batteries, even for an extended period (years) of time due to non-volatile EEPROM memory. If the datalogger was logging when it halted due to low battery voltage, it will resume logging as soon as new batteries are installed or as soon as it is connected to a USB port.

5. TROUBLESHOOTING

Listed below are a few commonly experienced problems and remedial action. Contact the factory should a problem arise not explained herein or additional information be needed.

Symptom: Unit will not respond to communications

 Wrong COM port selected.  The USB Drivers may not be properly installed. See Section 2.5, 8002-4-2 (USB) Driver

Installation.  If RS-232 or RS-485 communications are being used, the internal batteries of the datalogger may be low, dead, or inserted incorrectly. Check the batteries and replace if necessary. (Units manufactured before September 2018 were supplied with an aluminum battery holder, which may need adjusting; refer to Appendix I.)  If RS-485 communications is being used, the <ENTER>, <ENTER>, #,datalogger address,

<ENTER> key sequence is not being sent. Refer to Appendix F – NETWORKING for further

information.

Symptom: Vibrating wire gage measurement reads -999999.0

 Using an ohmmeter, check connections to the vibrating wire gage leads. Resistance should be between 90 and 180 ohms (pins A and B on the 10-pin connector, see Appendix B). Remember to correct for cable resistance, which is approximately 50 Ω per km (14.7Ω per 1000 ft.) Multiply this factor by two to account for both directions. If resistance reads less than 100Ω, the cable is probably shorted. If resistance reads infinite or in the megohms range, the cable is probably cut.  Check the datalogger with another known good transducer. If it still reads –999999.0, the datalogger may be malfunctioning.

 Check that the proper gage type is selected (see Table 2 and Table 3).  Check that the transducer shield wire is not shorted to either the red or black wire.

Symptom: Gage measurement (analog or vibrating wire) reads -999999.9

 A mathematical over-range has occurred. Check the magnitude of the reading, zero reading, multiplier and offset. The result must be in the range of 1.0 × 10-7 to 1.0 × 107.

Symptom: Vibrating wire gage reading is unstable

 Is there a source of electrical noise nearby? Likely candidates are generators, motors, arc welding equipment, high voltage lines, etc. If possible, move the datalogger and transducer cables away from the power lines or electrical equipment.  Check if the proper gage type is selected (see Table 2 and Table 3).

Symptom: Thermistor measurement shows -99.9 degrees Celsius

 Indicates open circuit to thermistor leads. Check connections from datalogger to thermistor leads. If okay, check thermistor with ohmmeter. Appendix E details the resistance versus temperature relationship.

APPENDIX A. SPECIFICATIONS

A.1 Measurement Capability

• Vibrating Wire (all types).

• External temperature (thermistor).

• Internal temperature (thermistor).

• Main battery voltage (3V and 12V).

• RTC lithium battery voltage.

A.2 Power

Power supply: Internal 3 VDC (7.5Vmax) or External 12 VDC (15Vmax) Processing/communication current: <100 mA VW measurement current: <250 mA Quiescent current: <600 µA RTC battery type: Panasonic CR2032 3V lithium coin cell: 20mm, 225 mAHr RTC battery life: >10 years Operating temperature range: −30 to +50° C

A.3 Memory

Data memory: 320K EEPROM Program memory: 24K EEPROM Array storage 10666 Data memory type: ring (oldest over-write) Array elements: ID (optional) Year Julian day (or month,day) Time (hhmm or hh,mm) Seconds Battery voltage Datalogger temperature Channel 1 Transducer reading Channel 2 Transducer reading Channel 3 Transducer reading Channel 4 Transducer reading Channel 1 Transducer temperature Channel 2 Transducer temperature Channel 3 Transducer temperature Channel 4 Transducer temperature Array #

A.4 Clock

Features: Full calendar Time format: 12 or 24 hour (selectable) Date Format: mm,dd or julian (selectable) Accuracy: ±2 minutes per year

A.5 Serial Interface (all LC-2x4 models)

Speed: 9600 bps & 115,200 (version 3.1.X and later) Parameters: 8 Data bits

1 Stop bit no Parity no Flow control

Data output format: ASCII text

A.6 RS-485 Network

Maximum nodes: 256 Maximum cable length: 4000', 1.22 km

A.7 Vibrating Wire Measurement

Excitation sweep range: 400 Hz to 4500 Hz Frequency Measurement Technique: Adaptive Multiple Period Averaging Accuracy: 0.05% F.S.R. (450-4000 Hz) Resolution: 0.001 digit

A.8 Internal/External Temperature Measurement

Thermistor: Dale #1C3001-B3 (YSI 44005) (Standard 0)

Thermometrics BR55KAKA822J (High Temp 1) U.S. Sensor 103JL1A (High Temp 2)

Transducer accuracy: ±0.5° C Measurement accuracy: 0.5% FSR Resolution: 0.01° C (Internal)

0.1° C (External)

Linearization error: 0.02% FSR Temperature range: −40 to +60° C Standard Thermistor

0 to +200º C High Temp Thermistor Overall accuracy: 1.0% FSR (±1°)

A.9 Main Battery Measurement

3V Battery: 12V Battery:

Range: 0 to 7.5 VDC Range: 0 to 15 VDC Accuracy: ±1.83mV Accuracy: ±3.662mV Resolution: 0.01 VDC

A.10 Multiplexer Relay

NAIS TXS2SA-4.5V

Contact resistance: 0.1 ohm (max) Switching current: 1A (max)

APPENDIX B. CONNECTOR PINOUTS

Terminal Block

Position

Channel Number

Description

Cable Wire

Color

VW1+

Vibrating Wire +

RED

VW1-

Vibrating Wire -

BLACK

TH1+

Thermistor +

WHITE

TH1-

Thermistor -

GREEN

SHLD1

Analog Ground (shield)

BARE WIRE

VW2+

Vibrating Wire +

RED

VW2-

Vibrating Wire -

BLACK

TH2+

Thermistor +

WHITE

TH2-

Thermistor -

GREEN

SHLD2

Analog Ground (shield)

BARE WIRE

VW3+

Vibrating Wire +

RED

VW3-

Vibrating Wire -

BLACK

TH3+

Thermistor +

WHITE

TH3-

Thermistor -

GREEN

SHLD3

Analog Ground (shield)

BARE WIRE

VW4+

Vibrating Wire +

RED

VW4-

Vibrating Wire -

BLACK

TH4+

Thermistor +

WHITE

TH4-

Thermistor -

GREEN

SHLD4

Analog Ground (shield)

BARE WIRE

10 Pin

Bendix

Internal Wire

Color

PCB connector J5

Description

Brown 1 Ground

Red 2 Tx

Orange 3 Rx

Yellow 4 RTS

Green 5 CTS

Blue 6 N/C

Violet 7 DTR

Grey 8 +5V

White 9 N/C

Black

Ground

B.1 Transducer Cable Connections

Table 10 - Transducer Cable Connections

B.2 RS-232 Connector Pinout (8002-4-1)

The mating 10 pin Bendix plug is part number PT06F-12-10P.

Table 11 - RS-232 Connector Pinout

10 Pin

Bendix

Internal Wire

Color

PCB connector J5

Description

Brown 1 USB VCC

Red 2 USB DM

Orange 3 USB DP

Yellow 4 Digital Ground

Green 5 RS-485 RX

Blue 6 RS-485 /RX

Violet 7 RS-485 TX

Grey 8 RS-485 /TX

White 9 RS-485 +12V

Black

RS-485 Ground

10 Pin

Bendix

Internal Wire

Color

PCB connector J6

Description

Brown 1 No Connection

Red 2 No Connection

Orange 3 No Connection

Yellow 4 Digital Ground

Green 5 RS-485 RX

Blue 6 RS-485 /RX

Violet 7 RS-485 TX

Grey 8 RS-485 /TX

White 9 RS-485 +12V

Black

RS-485 Ground

B.3 USB Connector Pinout (8002-4-2)

The mating 10 pin Bendix plug is part number PT06F-12-10P.

Table 12 - USB Connector Pinout

B.4 RS-485 Connector Pinout (optional, 8002-4-3)

Table 13 - RS-485 Connector Pinout

APPENDIX C. DATA FILE TRANSFER TO A WINDOWS PC

Data can be downloaded to the PC either via LogView software (refer to the LogView Online Help) or via Windows HyperTerminal, which, prior to Windows Vista, was supplied with most personal computers. The steps to download the data using LogView are as follows:

C.1 Downloading Data using LogView

The steps below assume that a successful connection has been previously established between LogView and the datalogger. (See Section 2.5.9)

Click on the Collect Data button from the Main Toolbar. See Figure 17 below:

Figure 17 - LogView Collect Data Button

If the datalogger configuration is set for “Collect all data” in “Datalogger Settings→Data Collection Options” (see the LogView on-line help menu covering datalogger settings) then LogView will issue commands to the datalogger to initiate a download of all arrays logged on the datalogger. If the memory has wrapped, then 10666 arrays will be downloaded starting at the current User Pointer (See Sections 3.7 and 3.26).

If the datalogger configuration is set for “Collect new data since last download” in “Datalogger Settings→Data Collection Options” then LogView will issue commands to the datalogger to initiate a download of all arrays since the last time data was downloaded.

Once the data collection has been initiated, the following progress bar (see Figure 18) will be displayed until the collection has completed:

Figure 18 - Data Collection Progress Bar

After a data collection has finished LogView will display the message shown in Figure 19:

Figure 19 - Data Collection Complete Message

C.2 Downloading Data using HyperTerminal (or equivalent)

The steps to download the data using HyperTerminal are as follows:

Launch HyperTerminal: Start → Programs → Accessories → Communications → HyperTerminal

1) Enter a name for the New Connection – Select OK (Figure 20).

Figure 20 – HyperTerminal Connection Description

2) Change the Connect using setting to the appropriate COM port (Figure 21) – Select OK.

Figure 21 - HyperTerminal Connection Selection

3) In the COM Properties Dialog, enter the “Port Settings”. Select Apply. Select OK (Figure 22).

Figure 22 - HyperTerminal COM Port Settings

4) With the cursor in the display screen, press the Enter key a few times to verify that communications

have been established. The datalogger should return the power up prompt:

Hello. Press "?" for Help. *

5) Upon confirmation of communications, select Transfer | Capture Text (see Figure 23):

Figure 23 - HyperTerminal Transfer Menu

6) Enter the path and name of the file to be created, either directly or with the Browse button, then click

on the Start button (see Figure 24). Hint: It may be helpful to specify “.CSV” as the file extension to allow for direct formatted entry into a spreadsheet program.

Figure 24 - Specify Data Capture File

7) With the cursor in the display screen, push the <Enter> key a few times to wake-up the datalogger,

then:

Type “S” to get the Status of the datalogger. Type “P1” to position the data array Pointer at location one. Type “D5” to Display the readings stored in memory (see Figure 25). Select Transfer | Capture Text | Stop.

Figure 25 - HyperTerminal/Datalogger Communication

The data are now stored in the specified file.

APPENDIX D. SAMPLE DATA FILE

D.1 Sample Raw Data File

Datalogger#1,2007,329,1421, 0 ,2.93,25.01,-9040.265,---,---,---,23.7,---,---,---,1 Datalogger#1,2007,329,1421,10,2.93,25.13,-9039.986,---,---,---,23.7,---,---,---,2 Datalogger#1,2007,329,1421,20,2.93,25.42,-9039.950,---,---,---,23.7,---,---,---,3 Datalogger#1,2007,329,1421,30,2.93,25.30,-9041.042,---,---,---,23.7,---,---,---,4 Datalogger#1,2007,329,1421,40,2.93,25.16,-9040.502,---,---,---,23.7,---,---,---,5 Datalogger#1,2007,329,1421,50,2.93,25.07,-9039.458,---,---,---,23.7,---,---,---,6 Datalogger#1,2007,329,1422, 0 ,2.93,25.04,-9040.303,---,---,---,23.7,---,---,---,7

The comma delineated columns above represent the following:

Column 1 represents the datalogger id Column 2 represents the year when the array was stored. Column 3 represents the julian day (or day, month format, see Section 3.5). Column 4 represents the time (or hh,mm format, see Section 3.37). Column 5 represents the seconds. Column 6 represents the main battery voltage (alkaline batteries, nominal 3.0 VDC). Column 7 represents the internal temperature in degrees Celsius. Column 8 represents the Channel 1 vibrating wire reading. Column 9 represents the Channel 2 vibrating wire reading. (disabled) Column 10 represents the Channel 3 vibrating wire reading. (disabled) Column 11 represents the Channel 4 vibrating wire reading. (disabled) Column 12 represents the Channel 1 external temperature in degrees Celsius. Column 13 represents the Channel 2 external temperature in degrees Celsius. (disabled) Column 14 represents the Channel 3 external temperature in degrees Celsius. (disabled) Column 15 represents the Channel 4 external temperature in degrees Celsius. (disabled) Column 16 represents the Array #

Ohms

Temp

Ohms

Temp

Ohms

Temp

Ohms

Temp

Ohms

Temp

201.1K

-50

16.60K

-10

2417

+30

525.4

+70

153.2

+110

187.3K

-49

15.72K

-9

2317

507.8

149.0

111

174.5K

-48

14.90K

-8

2221

490.9

145.0

112

162.7K

-47

14.12K

-7

2130

474.7

141.1

113

151.7K

-46

13.39K

-6

2042

459.0

137.2

114

141.6K

-45

12.70K

-5

1959

444.0

133.6

115

132.2K

-44

12.05K

-4

1880

429.5

130.0

116

123.5K

-43

11.44K

-3

1805

415.6

126.5

117

115.4K

-42

10.86K

-2

1733

402.2

123.2

118

107.9K

-41

10.31K

-1

1664

389.3

119.9

119

101.0K

-40

9796 0 1598

376.9

116.8

120

94.48K

-39

9310

1535

364.9

113.8

121

88.46K

-38

8851 2 1475

353.4

110.8

122

82.87K

-37

8417 3 1418

342.2

107.9

123

77.66K

-36

8006 4 1363

331.5

105.2

124

72.81K

-35

7618 5 1310

321.2

102.5

125

68.30K

-34

7252 6 1260

311.3

99.9

126

64.09K

-33

6905 7 1212

301.7

97.3

127

60.17K

-32

6576 8 1167

292.4

94.9

128

56.51K

-31

6265 9 1123

283.5

92.5

129

53.10K

-30

5971

1081

274.9

90.2

130

49.91K

-29

5692

1040

266.6

87.9

131

46.94K

-28

5427

1002

258.6

85.7

132

44.16K

-27

5177

965.0

250.9

83.6

133

41.56K

-26

4939

929.6

243.4

81.6

134

39.13K

-25

4714

895.8

236.2

79.6

135

36.86K

-24

4500

863.3

229.3

77.6

136

34.73K

-23

4297

832.2

222.6

75.8

137

32.74K

-22

4105

802.3

216.1

73.9

138

30.87K

-21

3922

773.7

209.8

72.2

139

29.13K

-20

3748

746.3

203.8

100

70.4

140

27.49K

-19

3583

719.9

197.9

101

68.8

141

25.95K

-18

3426

694.7

192.2

102

67.1

142

24.51K

-17

3277

670.4

186.8

103

65.5

143

23.16K

-16

3135

647.1

181.5

104

64.0

144

21.89K

-15

3000

624.7

176.4

105

62.5

145

20.70K

-14

2872

603.3

171.4

106

61.1

146

19.58K

-13

2750

582.6

166.7

107

59.6

147

18.52K

-12

2633

562.8

162.0

108

58.3

148

17.53K

-11

2523

543.7

157.6

109

56.8

149

55.6

150

APPENDIX E. THERMISTOR TEMPERATURE DERIVATION

Thermistor Type: YSI 44005, Dale #1C3001-B3, Alpha #13A3001-B3

Resistance to Temperature Equation:

A+B(LnR)+C(LnR)

Equation 5 - Convert Thermistor Resistance to Temperature

Where: T = Temperature in °C. LnR = Natural Log of Thermistor Resistance A = 1.4051 × 10-3 (coefficients calculated over the −50 to +150° C. span) B = 2.369 × 10-4 C = 1.019 × 10-7

-273.2

Table 14 - Standard Thermistor Resistance versus Temperature

Thermistor Type: Thermometrics BR55KA822J

Temp

(ohms)

LnR

LnR3

Calculated

Temp

Diff

FS Error

Temp

(ohms)

LnR

LnR3

Calculated

Temp

Diff

FS Error

-30

113898

11.643

1578.342

-30.17

0.17

0.06

120

407.62

6.010

217.118

120.00

0.00

-25

86182

11.364

1467.637

-25.14

0.14

0.05

125

360.8

5.888

204.162

125.00

0.00

-20

65805

11.094

1365.581

-20.12

0.12

0.04

130

320.21

5.769

191.998

130.00

0.00

-15

50684.2

10.833

1271.425

-15.10

0.10

0.03

135

284.95

5.652

180.584

135.00

0.00

-10

39360

10.581

1184.457

-10.08

0.08

0.03

140

254.2

5.538

169.859

140.01

-0.01

0.00

-5

30807.4

10.336

1104.068

-5.07

0.07

0.02

145

227.3

5.426

159.773

145.02

-0.02

-0.01

24288.4

10.098

1029.614

-0.05

0.05

0.02

150

203.77

5.317

150.314

150.03

-0.03

-0.01

19294.6

9.868

960.798

4.96

0.04

0.01

155

183.11

5.210

141.428

155.04

-0.04

-0.01

15424.2

9.644

896.871

9.98

0.02

0.01

160

164.9

5.105

133.068

160.06

-0.06

-0.02

12423

9.427

837.843

14.98

0.02

0.01

165

148.83

5.003

125.210

165.08

-0.08

-0.03

10061.4

9.216

782.875

19.99

0.01

0.00

170

134.64

4.903

117.837

170.09

-0.09

-0.03

8200

9.012

731.893

25.00

0.00

175

122.1

4.805

110.927

175.08

-0.08

-0.03

6721.54

8.813

684.514

30.01

-0.01

0.00

180

110.95

4.709

104.426

180.07

-0.07

-0.02

5540.74

8.620

640.478

35.01

-0.01

0.00

185

100.94

4.615

98.261

185.10

-0.10

-0.04

4592

8.432

599.519

40.02

-0.02

-0.01

190

92.086

4.523

92.512

190.09

-0.09

-0.03

3825.3

8.249

561.392

45.02

-0.02

-0.01

195

84.214

4.433

87.136

195.05

-0.05

-0.02

3202.92

8.072

525.913

50.01

-0.01

200

77.088

4.345

82.026

200.05

-0.05

-0.02

2693.7

7.899

492.790

55.02

-0.02

-0.01

205

70.717

4.259

77.237

205.02

-0.02

-0.01

2276.32

7.730

461.946

60.02

-0.02

-0.01

210

64.985

4.174

72.729

210.00

0.00

1931.92

7.566

433.157

65.02

-0.02

-0.01

215

59.819

4.091

68.484

214.97

0.03

0.01

1646.56

7.406

406.283

70.02

-0.02

-0.01

220

55.161

4.010

64.494

219.93

0.07

0.02

1409.58

7.251

381.243

75.01

-0.01

0.00

225

50.955

3.931

60.742

224.88

0.12

0.04

1211.14

7.099

357.808

80.00

0.00

230

47.142

3.853

57.207

229.82

0.18

0.06

1044.68

6.951

335.915

85.00

0.00

235

43.673

3.777

53.870

234.77

0.23

0.08

903.64

6.806

315.325

90.02

-0.02

-0.01

240

40.533

3.702

50.740

239.69

0.31

0.11

785.15

6.666

296.191

95.01

-0.01

0.00

245

37.671

3.629

47.788

244.62

0.38

0.13

100

684.37

6.528

278.253

100.00

0.00

250

35.055

3.557

45.001

249.54

0.46

0.16

105

598.44

6.394

261.447

105.00

0.00

255

32.677

3.487

42.387

254.44

0.56

0.19

110

524.96

6.263

245.705

110.00

0.00

260

30.496

3.418

39.917

259.34

0.66

0.23

115

461.91

6.135

230.952

115.00

0.00

Resistance to Temperature Equation:

A+B(LnR)+C(LnR)

Equation 6 - Convert Thermistor, Type BR55KA822J, Resistance to Temperature

Where: T = Temperature in °C. LnR = Natural Log of Thermistor Resistance

A = 1.02569 × 10-3 B = 2.478265 × 10-4 C = 1.289498 × 10-7

Note: Coefficients calculated over -30° to +260° C. span.

-273.2

Table 15 - BR55KA822J Thermistor Resistance versus Temperature

Temp

Ohms

Temp

Ohms

-30

176974

120

389.6

-25

130421

125

341.9

-20

97081

130

301

-15

72957

135

265.8

-10

55329

140

235.3

-5

42327

145

208.9

32650

150

186.1

25392

155

165.96

19901

160

148.36

15712

165

132.95

12493

170

119.43

10000

175

107.52

8057

180

97.02

6531

185

87.72

5326

190

79.49

4368

195

72.17

3602

200

65.66

2986

205

59.85

2488

210

54.65

2083

215

1752

220

45.82

1480

225

42.06

1255

230

38.68

1070

235

35.62

915.5

240

32.86

786.6

245

30.36

100

678.6

250

28.09

105

587.6

255

26.03

110

510.6

260

24.15

115

445.3

Thermistor Type: U.S. Sensor 103JL1A

Resistance to Temperature Equation:

A+B(LnR)+C(LnR)

Equation 7 - Convert Thermistor, Type 103JL1A, Resistance to Temperature

Where: T = Temperature in °C. LnR = Natural Log of Thermistor Resistance

A = 1.12766979300187 × 10-3 B = 2.34444184128213 × 10-4 C = 8.47692130592308 × 10

D = 1.17512193579615 × 10

-8

-11

+D(LnR)

-273.2

Table 16 - 103JL1A Thermistor Resistance versus Temperature

APPENDIX F. NETWORKING

F.1 Description

The Model LC-2x4 Datalogger is capable of being networked by way of a single, optically-isolated RS485 communications cable. Utilizing one 8001-5 (RS-232) or 8002-5 (USB) RS-485 interface adapter at the computer (data collection) end, up to 256 Model LC-2x4 Dataloggers* can be networked. Also, the maximum network length* can be up to 1.22 km (4000 ft.). RS-485 is chosen as the transmission medium due to its inherent noise immunity and its capability to support a bus type of network architecture. The 8001-5 RS-485 interface adapter is battery powered to allow for collection of data in the field. An AC adapter is also provided if mains power is available. The 8002-5 draws its operating power from the host computer’s USB 2.0 port.

Each datalogger appears as a “node” on the RS-485 bus, with its own unique address. In order to communicate with a specific datalogger, the user transmits the address of the datalogger via the #nnn command, where nnn represents the network address of the datalogger. Valid addresses are 1 thru 256.

In a RS-485 system, it is important to locate the “termination” device at the end of the bus. Make sure that circuit board jumper JP1 (located adjacent to J5 – the COM connector cable termination on datalogger the circuit board) is positioned between pins one and two on the datalogger that is located at the farthest point on the bus from the RS-485 Interface Adapter and data collection computer. Refer to Appendix F.2 for an example of a typical communications session.

Finally, it is helpful to set the datalogger ID# to agree with the network address. This will tend to eliminate any confusion when collecting data.

For further information, refer to Section 3.10, and Sections 3.21 through 3.25.

* The total number of networked dataloggers is limited by the total network cable length. Contact a Geokon Sales Engineer for further information.

F.2 Example of a Four-Datalogger Networking Session

1) This session assumes that there are four dataloggers running at five second scan intervals, and

that each datalogger has only one channel enabled.

2) Press <ENTER> <ENTER> to wake the dataloggers from sleep. At this point, each datalogger is

“listening” for its network address to be transmitted down the RS-485 bus.

3) To communicate with Datalogger #1 and observe several readings, type #1<ENTER>.

Datalogger #1 returns:

Network address: 1 * 1,2007,11,25,16,25,0,2.98,24.6,-9040.265,---,---,---,20.5,---,---,---,34 1,2007,11,25,16,25,5,2.98,24.7,-9039.886,---,---,---,20.4,---,---,---,35 1,2007,11,25,16,25,10,2.98,24.7,-9040.028,---,---,---,20.5,---,---,---,36 *E

Note that the datalogger ID, which is the first entry for each ASCII character string, corresponds to the network address. This should be set by the user during initial datalogger setup via the ID command.

Typing E<ENTER> puts the datalogger back to sleep and disconnects it from the RS-485 bus. The datalogger will continue to wake up periodically (scan rate setting) to take a data reading. The E

command must be used in order to disconnect from the current datalogger and allow connection to the next datalogger.

4) To communicate with Datalogger #2 and observe several readings, type <ENTER> <ENTER>to wake the dataloggers and then type #2<ENTER>. Datalogger #2 returns:

Network address: 2 * 2,2007,11,25,16,25,25,2.95,24.7,-360.112,---,---,---,20.4,---,---,---,27 2,2007,11,25,16,25,30,2.96,24.7,-360.155,---,---,---,20.4,---,---,---,28 *E

5) Doing the same for Datalogger #3 and #4 results in:

Network address: 3 * 3,2007,11,25,16,30,0,2.98,24.7,9091.346,---,---,---,20.5,---,---,---,25 3,2007,11,25,16,30,5,2.98,24.7,9091.400,---,---,---,20.5,---,---,---,26 *E

Network address: 4 * 4,2007,11,25,16,31,26,2.96,24.8,-8457.811,---,---,---,20.4,---,---,---,20 4,2007,11,25,16,31,31,2.96,24.8,-8456.978,---,---,---,20.4,---,---,---,21 *E

APPENDIX G. LITHIUM COIN CELL

G.1 Description

Under normal operating conditions, the 1.5-volt D cells provide all the power required to operate the LC2x4 datalogger. In order to maintain the correct date and time settings for those periods when the D cells are removed, the LC-2x4 datalogger incorporates a 3-volt lithium coin cell (Panasonic CR2032) to supply operating current to the internal Real Time Clock.

Since the power requirements of the Real Time Clock circuit are minimal (3µA max.), the clock will continue to operate for up to 10 years under these conditions.

However, if the lithium cell voltage falls to 2.5-volts or less, it should be replaced using the following replacement procedure.

G.2 Replacement Procedure

Materials Required:

• 6 mm (1/4") Slotted Screwdriver

• 6 mm (1/4") Nutdriver

• CR2032 Lithium Coin Cell (Geokon P/N BAT-115),

• Disposable Grounding Wrist Strap (3M P/N 2209 or equivalent)

Procedure:

1) Put on the disposable grounding wrist strap and connect to a good earth ground.

2) Using the 6 mm (1/4") slotted screwdriver, loosen the four captive screws and remove the datalogger

cover.

3) Remove the two D cells.

4) Using the 6 mm (1/4") slotted screwdriver, remove the four 9.5 mm long M3.5 x .6 (3/8" long, 6-32)

battery board mounting screws.

5) Lift up the battery board and disconnect the two-wire Molex connector (red and black wires) from

the main PCB, which is located below the battery board. Set the battery board aside.

6) Using the 6 mm (1/4") nut driver, remove the four standoffs securing the printed circuit board to the

case.

7) Lift the printed circuit board up to expose the bottom of the circuit board.

8) Using the 3 mm (1/8") slotted screwdriver, gently pry the lithium coin cell battery from the battery

holder.

9) Insert the replacement lithium coin cell into the battery holder (+ side facing out).

10) Re-install the printed circuit board back into the enclosure.

11) Thread the four standoffs onto the set screws, using the nut driver to gently tighten the standoffs.

12) Reconnect the two-wire Molex connector to the header labeled “3V” (“12V” if applicable).

13) Position the battery board over the standoffs and reinstall using the four, 9.5 mm long,

M3.5 x .6 (3/8" long, 6-32) battery board mounting screws.

14) Reinstall the D cells.

15) Reinstall the datalogger cover.

Lithium coin cell replacement is now complete.

10 pin Bendix

PT06A-12-10P

Function

3 Gage VW Load Cell,

Purple Cable

4 Gage VW Load Cell,

Purple Cable

6 Gage VW Load Cell,

Orange Cable

Common

White's Black*

Green

Blue

Multiplexer

Board

Vibrating Wire

with Thermistor

VW1+

VW Sensor #1

VW1-

8032-27

TH1+

Thermistor

TH1-

Thermistor

SHLD1

Shield Drain Wire

VW2+

VW Sensor #2

VW2-

8032-27

TH2+

TH2-

SHLD2

VW3+

VW Sensor #3

VW3-

8032-27

TH3+

TH3-

SHLD3

VW4+

VW Sensor #4

VW4-

8032-7

TH4+

TH4-

SHLD4

APPENDIX H. MODEL 8032-27 AND LOAD CELL WIRING

Connect the “common” VW- conductor from the load cell to the 8032-27 by lifting up on the orange tab located on the opposite side of the six black conductors, inserting the common conductor fully into the 8032-27 (Figure 26), and then pushing down on the orange tab until it snaps into place. Refer to Table 17 to identify which conductor carries the common VW- signal.

Figure 26 - Model 8032-27 Jumper Wire Assembly

Table 17 - Common Conductor Chart

* White's black and Green wires are switched on Geokon three-gage VW load cells prior to serial number 3313.

The following wiring chart details the connections between the load cell, the 8032-27, and the multiplexer board:

Table 18 - Multiplexer Board Wiring

APPENDIX I. BATTERY REPLACEMENT INSTRUCTIONS FOR UNITS MANUFACTURED BEFORE SEPTEMBER 2018

1) Remove the four captive lock regular head screws on the top of the case and lift the cover off.

Underneath the cover is the 'D' cell battery holder.

2) Remove the two batteries from the holder being careful not to bend the sides outward.

3) Insert the new batteries straight down into the battery holder. Ensure that the polarity of the batteries

matches the diagram on the battery holder.

4) Check for secure connection between the battery terminals and holder. If a gap exists, remove

batteries and bend the holder sides inward. See Figure 27 below.

Proper Battery Installation Faulty Battery Installation

Figure 27 - Battery Installation Detail

5) Re-install the cover. Check datalogger for proper operation.

Geokon LC-2x4, 8002-4-3, 8002-4-2, 8002-4-1 Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1. INTRODUCTION

2. GETTING STARTED

2.1 Transducer Installation

2.1.1 Cable Gland Models (8002-4-1, 8002-4-2, 8002-4-3)

2.1.2 10-pin Bulkhead Models (8002-4A-1, 8002-4A-2, 8002-4A-3)

2.2 Battery Installation

2.3 Accessories

2.4 Earth Ground Installation

2.5 Software Installation and Setup

2.5.1 LogView Installation

2.5.2 Launching LogView

2.5.3 LogView Workspaces

2.5.4 Adding Projects to LogView Workspaces

2.5.5 Adding Dataloggers to LogView Projects

2.5.6 LC-2x4 Connection (8002-4-1, RS-232)

2.5.7 LC-2x4 Connection (8002-4-2, USB)

2.5.8 LC-2x4 Connection 8002-4-3 (RS_485)

2.5.9 Connecting to a Datalogger with LogView

2.5.10 Determining COM Port Numbers

2.6 Communication Setup Example Using HyperTerminal

3. COMMAND LIST

3.1 “BRnnn”- Set or Display the Current Baud Rate

3.2 “C” - Display Current Clock Settings

3.3 “CSmm/dd/yy/hh:mm:ss” - Set the Internal Clock

3.4 “DEFAULT” – Load Factory Default Settings

3.5 “DF” - Display or Set Date Format

3.6 “DL” – Display Current Mode

3.7 “Dnnnn” - Display Arrays Forward from User Position

3.8 “E” - Low Power Sleep Mode

3.9 “Gnn/c/tt/szzzzzz/sffffff/soooooo” or “Gnn/c/tt/saaaaaa/sbbbbbb/scccccc” – Gage Settings

3.10 “IDdddddddddddddddd” - Display or Set Datalogger ID

3.11 “L” - Display Log Intervals

3.12 “Ln/lllll/iii” - Define Length and Iteration of Interval

3.13 “LD” - Disable Log Intervals

3.14 “LE” - Enable Log Intervals

3.15 “M” - Display Current Monitor Mode Setting

3.16 “MD” - Disable Monitor Mode

3.17 “ME” - Enable Monitor Mode

3.18 “MXS” – Display Multiplexer Status

3.19 “MXn” – Set the Maximum Number of Channels

3.20 “N” - Display Next Measurement Cycle

3.21 “NA” - Display Network Address

3.22 “NAddd” - Set Network Address

3.23 “ND” - Network Disable

3.24 “NE” - Network Enable

3.25 “NS” - Display Network Status

3.26 “Pnnnn” - Set User Position Memory Pointer

3.27 “R” - Reset Memory Pointers

3.28 “RESET” - Reboot the LC-2 Microprocessor

3.29 “S” – Display Status

3.30 “SCnnnnn” - Set Scan Interval

3.31 “SS” - Display System Status

3.32 “SPhh:mm” - Stop Logging

3.33 “SR” - Synchronize Readings

3.34 “SThh:mm” - Start Logging

3.35 “SV” - Display Software Version

3.36 “TEST” - Perform Internal Self-Tests

3.37 “TF” - Display or Set Time Forma

3.38 “Tnn/t” – Set Thermistor Type

3.39 “TR” - Display Current Trap Count

3.40 “TR0” - Reset Trap Count

3.41 “VL” – Display Coin Cell Voltage

3.42 “V3” – Display the D Cell Battery Voltage

3.43 “V12” – Display the External Battery Voltage

3.44 “WF” - Display Current Wrap Format

3.45 “X” - Take Immediate Reading

4. MAINTENANCE

4.1 Cleaning

4.2 Batteries

5. TROUBLESHOOTING

APPENDIX A. SPECIFICATIONS

A.1 Measurement Capability

A.2 Power

A.3 Memory

A.4 Clock

A.5 Serial Interface (all LC-2x4 models)