Ele SoilTest PRO User manual

SoilTest PRO Auto Soils Consolidator (ASC)
25-0500
Original Instructions 1 9901X0275 Issue 2
OPERATING INSTRUCTIONS
SoilTest PRO Auto Soils Consolidator (ASC)
25-0500
ELE International
Chartmoor Road, Chartwell Business Park
Leighton Buzzard, Bedfordshire, LU7 4WG
England
phone: [phone]
fax: [phone]
email: [e-mail]
http://www.ele.com
ELE International, a division of Hach Lange Ltd.
Distributor: ELE International
Soiltest Product Division
PO Box 389, 5600 Lindbergh Drive
Loveland, CO 80539
USA
phone: [phone]
fax: [phone]
email: s[email protected]
http://www.eleusa.com
In the interests of improving and updating its equipment, ELE reserves the right to alter specifications to equipment at any time.
ELE International 2019


SoilTest PRO Auto Soils Consolidator (ASC)
25-0500
Original Instructions 2 9901X0275 Issue 2
Contents
Section Page
1 Specification 3
1.1 Safety Information 3
1.2 Use of Hazard Information 3
1.3 EU Radio Interference and Immunity Regulation 4
1.4 Other Certification 4
2 Product Overview 5
2.1 ASC Customer Benefits 6
2.2 ASC Features 6
3 Description 8
3.1 Consolidation Cell Range 9
4 Installation 10
4.1 Moving, Lifting and Siting 10
4.2 Safety 10
4.3 Electrical Safety 11
4.3.1 Portable Appliance Tests (PAT) 11
4.4 Mounting the Load Cell and LVDT 12
4.5 Installation Checks 13
5 Operation 14
Appendix 1: Direct Connection to the ASC (Point-to-Point),
PC Configuration 24
Appendix 2: USB Port for Firmware Update 27
Appendix 3: Troubleshooting Guide 28
Appendix 4: Glossary of Icons and Menu Tree 29
Appendix 5: Error Codes 31
EC Declaration of Conformity 35
Suppliers Declaration of Conformity 36
WEEE Directive 37

SoilTest PRO Auto Soils Consolidator (ASC)
25-0500
Original Instructions 3 9901X0275 Issue 2
1 Specification
Specifications are subject to change without notice.
Power Requirements
100-240VAC 50/60 Hz 250VA
Dimensions (L x W x H)
360 x 290 x 680 mm, 14.2” x 11.4” x 26.8”
Weight
38 kg, 84 lb
Operating Environment
Temperature: 0 to 40°C (32°F to 104°F)
Humidity: 10% to 90%, non-condensing
Operating Altitude: 2000 m maximum
Storage Environment
Temperature: -20°C to 70°C ( -4°F to 158°F)
Protection Class
I, IP30
Pollution Degree/Installation Category
2: II
Capacity and Measurement Range
Default sensors of 15 kN and 15 mm travel
Load cell
Refer to Section 2 to size options
1.1 Safety Information
NOTICE
The manufacturer is not responsible for any damage due to misapplication or misuse of this
product including, without limitation, direct, incidental and consequential damages, and
disclaims such damages to the full extent permitted under applicable law. The user is solely
responsible to identify critical application risks and install appropriate mechanisms to protect
processes during a possible equipment malfunction.
Please read this entire manual before unpacking, setting up or operating this equipment. Pay
attention to all danger and caution statements. Failure to do so could result in serious injury
to the operator or damage to the equipment. Make sure that the protection provided by this
equipment is not impaired. Do not use or install this equipment in any manner other than that
specified in this manual.
1.2 Use of Hazard Information
DANGER
Indicates a potentially or imminently hazardous situation which, if not avoided, will result in
death or serious injury.
WARNING
Indicates a potentially or imminently hazardous situation which, if not avoided, could result
in death or serious injury.
CAUTION
Indicates a potentially hazardous situation that may result in minor or moderate injury.
NOTICE
Indicates a situation which, if not avoided, may cause damage to the instrument.
Information that requires special emphasis.

SoilTest PRO Auto Soils Consolidator (ASC)
25-0500
Original Instructions 4 9901X0275 Issue 2
Read all labels and tags attached to the instrument. Personal injury or damage to the
instrument could occur if not observed. A symbol on the instrument is referenced in the
manual with a precautionary statement.
This symbol, if noted on the instrument, references the instruction manual for
operation and/or safety information.
1.3 EU Radio Interference and Immunity Regulation
Supporting test records reside with the manufacturer.
The equipment has been tested and found to comply with the following standards.
EN61326-1:2013 Electrical equipment for measurement, control and laboratory use - EMC
requirements - Part 1: General requirements, Group 1, Class A equipment (emissions only)
and Industrial Environment (immunity section only).
EN55011:2009 (+A1) Limits and methods of measurement of radio disturbance
characteristics of industrial, scientific and medical (ISM) radio-frequency equipment, Group 1
Class A equipment.
EN61326-1:2013 Electrical equipment for measurement, control and laboratory use -
EMC requirements - Part 1: General requirements.
Basic Environment – (immunity section only).
EN61000-3-2:2014 Electromagnetic compatibility (EMC) - Part 3-2: Limits - Limits for
harmonic current emissions (equipment input current <=16A per phase).
EN61000-3-3:2013 Electromagnetic compatibility (EMC) - Part 3-3: Limits - Limitation of
voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for
equipment with rated current <16A per phase and not subject to conditional connection.
EN55032:2012 Electromagnetic compatibility of Multimedia Equipment - Emission
Requirements. Class A Emissions.
1.4 Other Certification
Canadian Radio Interference-Causing Equipment Regulation, IECS-003, Class A:
Supporting test records reside with the manufacturer.
This Class A digital apparatus meets all requirements of the Canadian Interference-
Causing Equipment Regulations.
FCC Part 15, Class "A" Limits.
Supporting test records reside with the manufacturer. The device complies with Part
15 of the FCC Rules. Operation is subject to the following conditions:
a. The equipment may not cause harmful interference.
b. The equipment must accept any interference received, including interference that
may cause undesired operation.
Changes or modifications to this equipment not expressly approved by the party
responsible for compliance could void the user's authority to operate the equipment.
This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to Part 15 of the FCC rules. These limits are designed to
provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications.

SoilTest PRO Auto Soils Consolidator (ASC)
25-0500
Original Instructions 5 9901X0275 Issue 2
Operation of this equipment in a residential area is likely to cause harmful
interference, in which case the user will be required to correct the interference at their
expense. The following techniques can be used to reduce interference problems:
a. Disconnect the equipment from its power source to verify that it is or is not the
source of the interference.
b. If the equipment is connected to the same outlet as the device experiencing
interference, connect the equipment to a different outlet.
c. Move the equipment away from the device receiving the interference.
d. Reposition the receiving antenna for the device receiving the interference.
e. Try combinations of the above.
2 Product Overview
The ASC SoilTest PRO range of automatic consolidation machines are designed to test
characteristics of various soils samples. Machines consist of a consolidation frame and
various size options of consolidation cells.
These instructions are for machines with a frame serial number beginning with 1944, i.e. of the
format 1944-X-XXXXX.
WARNING
Do not test any specimen material other than those explicitly listed in the Specifications of
this manual.
WARNING
Personal injury hazard. Instruments or components are heavy. Use
assistance to install or move.
DANGER
Do not operate machine near open flame or other heat sources.
Compressible soils can be subject to long-term consolidation under the loads imposed by
foundations and above ground structures. Settlement may occur even if the applied pressure
is within the safe bearing capacity of the soil, so it is important to understand this key soil
property, particularly if the settlement characteristics beneath an individual structure vary.
The one-dimensional consolidation test is the most common, and sometimes referred to as
the oedometer or incremental loading oedometer test. Radially constrained samples are
loaded in a sequence starting with a stress close to the over burden pressure of the sample.
The loading is then doubled for each stage; typically 4 or 5 times, with a final unloading
sequence.
Traditional consolidation frames load the specimen through a yoke assembly and one of
three alternative beam ratios. Different loads are applied manually by adjusting weights, but
this is a time-consuming activity and creates an opportunity for human error.

SoilTest PRO Auto Soils Consolidator (ASC)
25-0500
Original Instructions 6 9901X0275 Issue 2
The ASC will minimise staff involvement in test procedures whilst complying with the
requirements of international standards, producing accurate, reliable, flexible reports.
The ASC is fully automatic and runs a full consolidation test without user intervention, which
saves valuable time. A built-in electronic stepper motor ensures precise control of loading
over the entire 15 kN range. This design improves the accuracy of loading and avoids the
need for a compressor. Importantly, each Auto Soils Consolidator can also be linked to two
external manual consolidation frames, which is an advantage for laboratories wishing to
upgrade their consolidation test capability, without making their manual frames redundant.
Operation of these machines is straightforward, with the operator setting up and running the
test from a PC based application. Data logging, reporting and automatic analysis is provided
through ELE’s DS8 software application.
2.1 ASC Customer Benefits
•Fully automatic – reduces testing time.
•Compact footprint – saves laboratory space.
•Saves configurations for easy set-up of multiple cells and repeat tests.
•Controls up to 16 Auto Soils Consolidator machines from one PC – improves laboratory
efficiency (client network dependent).
•Ability to include manual consolidation frames – avoids redundancy.
•Wide range of sample cells.
•Complies to the following standards: ISO 17892-5, BS 1377-5, ASTM D2435/ D2435M,
AASHTO T216, ASTM D4546.
2.2 ASC Features
•S type load cell and a precision linear variable displacement transducer (LVDT) are
available and are required for use with the ASC.
•Available in one universal model 90-240 V AC, 50-60 Hz, 1 ph.
•7” splash-proof, colour, graphical touchscreen.
•Multi language.
•No compressor – stepper motor improves accuracy across entire 15 kN load range.
•Variable speed to suit sample type.
•Can change target loads during a test.
•Flexible reports compiled by the latest DS8 software.
•Self-test routines.
•Multi engineering units support (SI, US/Imperial and Metric).

SoilTest PRO Auto Soils Consolidator (ASC)
25-0500
Original Instructions 7 9901X0275 Issue 2
Warnings:
WARNING
Disconnect the unit from the mains supply before accessing the machine’s
electrical circuitry.
WARNING
Inappropriate use of the consolidation frame could result in a risk of
crushing.
WARNING
Test sample cells being loaded on the consolidation frame present a pinch
point if handled incorrectly.
CAUTION
It is recommended that appropriate PPE, safety footwear and eye protection be worn whilst
operating consolidation machines.

SoilTest PRO Auto Soils Consolidator (ASC)
25-0500
Original Instructions 8 9901X0275 Issue 2
3 Description
The ASC machine consists of a consolidation frame and sensors. The part number for the
frame is 25-0500/09. The frame load capacity is 15 kN. The default S-type load cell is 15 kN
and its part number is 27-1565. The default consolidation measurement sensor (LVDT) has a
15 mm range. It’s part number is 27-1650. Other ELE S-type load cells or LVDTs may be
used.
S-Type Load Cell
Alternative LVDT position
LVDT
LVDT measurement point
Cell centring pip
Status LEDs
Adjustable feet and fixing brackets

SoilTest PRO Auto Soils Consolidator (ASC)
25-0500
Original Instructions 9 9901X0275 Issue 2
3.1 Consolidation Cell Range
A large number of consolidation cell sizes are available for testing the soil sample. There are
4 overall cell sizes (Series 0444, 0469, 0490 and 0520) that cover the 12 standard sample
sizes offered. Refer to the Product Codes in the table below. The cell also includes a cutting
ring and porous discs. Spare rings and discs are available. Other custom sizes may also be
requested. The part numbers of calibration discs necessary for the deformation calculation
are also shown below.
Spare Parts
Series
Code
Product
Code
Cell Size
Cutting ring
Lower porous
disc
Upper porous
disc
Standards
0444
25-0444
35 mm
25-0444/12
25-0444/11
25-0444/10
BS, ISO, ASTM
0490
25-0446
50mm
25-0446/12
25-0490/11
25-0455/10
BS, ISO, ASTM
0469
25-0466
70 mm
25-0466/12
25-0469/11
25-0466/10
BS, ISO, ASTM
0469
25-0467
75 mm
25-0467/12
25-0469/11
25-0503/10
BS, ISO, ASTM
0520
25-0510
100 mm
25-0510/12
25-0520/11
25-0510/10
BS, ISO, ASTM
0520
25-0520
112.8 mm
25-0520/12
25-0520/11
25-0520/10
BS, ISO, ASTM
0490
25-0499
2 inch
25-0499/12
25-0490/11
25-0499/10
BS, ISO, ASTM
0490
25-0489
2.416 inch
25-0489/12
25-0490/11
25-0489/10
BS, ISO, ASTM
0490
25-0490
2.5 inch
25-0490/12
25-0490/11
25-0479/10
BS, ISO, ASTM
0469
25-0469
3 inch
25-0469/12
25-0469/11
25-0469/10
BS, ISO, ASTM
0520
25-0459
4 inch
25-0459/12
25-0520/11
25-0459/10
BS, ISO, ASTM
0469
25-0449
70 x 19 mm
25-0449/12
25-0469/11
25-0466/10
Geospec 3
Upper porous disc
Cutting ring
Lower porous disc
Series Code
Cell Size
O ring
Calibration Disc
0444
35 mm
25-0444/14
25-0444/15
0490
50mm
25-0490/14
25-0446/15
0469
70 mm
25-0469/14
25-0466/15
0469
75 mm
25-0469/14
25-0467/15
0520
100 mm
25-0520/14
25-0510/15
0520
112.8 mm
25-0520/14
25-0520/15
0490
2 inch
25-0490/14
25-0499/15
0490
2.416 inch
25-0490/14
25-0489/15
0490
2.5 inch
25-0490/14
25-0490/15
0469
3 inch
25-0469/14
25-0469/15
0520
4 inch
25-0520/14
25-0459/15
0469
70 x 19 mm
25-0469/14
25-0449/15

SoilTest PRO Auto Soils Consolidator (ASC)
25-0500
Original Instructions 10 9901X0275 Issue 2
4 Installation
WARNING
Exercise extreme caution when lifting the machine. Use only approved and tested
equipment. ELE International will accept no responsibility for damage caused by
mishandling.
4.1 Moving, Lifting and Siting
The ASC frame will be delivered in one part mounted on a pallet. It should remain on the
pallet until it is next to its final position.
To remove from the pallet, unscrew the four bolts (accessed from underneath the pallet)
which secure the compression frame. The machine may then be lifted/moved away from the
pallet and placed into position using a fork lift or hoist and lifting straps under the case.
Once in its final position the machine may be held firmly using the fixing brackets and
suitable screws, otherwise the brackets can be rotated out of the way.
Lastly the levelling of the machine should be checked with a suitable spirit level (not
provided). If necessary the machine can be levelled by adjusting the feet height using a flat
blade screwdriver and 12 mm spanner (1/2” wrench), also not provided.
4.2 Safety
Whilst the test is in operation do not remove any covers or attempt to adjust any part of the
machine.
Ensure all moving parts are thoroughly secured before attempting any maintenance.
NOTICE
Do not lift the machine from the cross-head as this will damage the loading mechanism. ELE
International will accept no responsibility for damage caused by mishandling.
NOTICE
Do not site the machine in an area subject to vibration. The consolidation test requires very
precise measurements to be made. Significant local vibration may cause inaccurate
measurements being recorded and result in incorrect analysis of soil sample characteristics.

SoilTest PRO Auto Soils Consolidator (ASC)
25-0500
Original Instructions 11 9901X0275 Issue 2
4.3 Electrical Safety
WARNING
Before removing any covers or performing maintenance repair and service,
isolate from electrical supply by removing mains plug. Where mains supply is
required during these activities, only competent persons should perform the
work.
Check that the power supply is compatible with the requirements stated on the
label and connect in accordance with IEE regulations or to local requirements.
This machine may be operated through a standard socket outlet when fitted with an
appropriate 3 pin plug fused in accordance with the label.
Note: Connect cable to plug as follows:
Brown wire (black) L Live or Power
Blue wire (white) N Neutral
Green/Yellow (green) wire E Earth or Ground
4.3.1 Portable Appliance Tests (PAT)
All ELE designed products are tested for electrical safety prior to sale.
An electrical safety test label is fitted (usually adjacent to the mains input socket). Should no
label be found, please contact ELE’s Service Department quoting the serial number of the
equipment.
Organisations have an obligation to ensure equipment is maintained and is safe for use.
Regular PAT testing is one means of ensuring equipment continues to be electrically safe.
NOTICE
Important: do not connect PAT leads to sensitive components such as PCBs, control
switches, etc.
DO NOT FLASH TEST ELECTRONIC EQUIPMENT.
Use the earth stud (M5 socket head) on the rear of the
machine panel or an external earth connection. Contact
ELE’s Service Department for assistance.
NOTICE
ELE International recommends the use of a UPS for all soil testing equipment given the
significant period of time these tests usually take. A loss of power during a test stage will
likely result in the test data being lost and the requirement to restart the whole test.

SoilTest PRO Auto Soils Consolidator (ASC)
25-0500
Original Instructions 12 9901X0275 Issue 2
4.4 Mounting the Load Cell and LVDT
The Load Cell is mounted (see below) to the cross head using the M16 bolt and 14 mm hex
key (supplied).
M16 bolt
Load Cell
The LVDT is mounted to the base of the load cell (see below) using the load pin and LVDT
arm.
Load pin
LVDT arm
M5 socket head screw
LVDT measurement seat
Use a 24 mm spanner (15/16” wrench) to attach the LVDT arm to the load cell with the load
pin. Insert the LVDT into the arm and tighten the M5 screw to retain it. The height adjustment
may be completed later, see Motor Drive and Home Position Setup for details.

SoilTest PRO Auto Soils Consolidator (ASC)
25-0500
Original Instructions 13 9901X0275 Issue 2
4.5 Installation Checks
Once the machine is in place and the transducers have been mounted, connection can be
made to the rear panel. The load cell must connect to the lower DIN connector (item 4)
sensor input 1. The LVDT (displacement transducer) must connect to the next DIN connector
(item 5) sensor input 2. Any further displacement sensors associated with manual
consolidation arms connect to the manual sensor inputs (item 6) sensor inputs 3 and 4.
The AC power connector is an IEC C14 fused/filtered appliance switch (item 7). The supply
voltage should be 100 to 240 V AC at 50/60 Hz. The dual pole switch contains two fuses
rated at 1A T. The AC mains supply must be connected to the AC input (item 7) using one of
the IEC 60320 type C13 cable assemblies provided.

SoilTest PRO Auto Soils Consolidator (ASC)
25-0500
Original Instructions 14 9901X0275 Issue 2
5 Operation
Turn the ASC machine ON. The screen display will be of the form below with the ASC in DS
Mode (ASC-DS). In this condition tests are configured and initiated from the DS8 application
running on a PC.
The front panel LEDs will show the following status:
•Power LED: Blue
oON: Power On
oOFF: Power Off
•Comms LED: Green
oON: The machine is connecting with DS8
oOFF: There is no DS8 connection
•Error LED: Red
oON: At power ON, to show power interruption has occurred
oOFF: After DS8 resets the logging system
Front Panel Display and Controls
All the basic operations of the Auto Soils Consolidator (ASC) are controlled from the 7.0”
touch screen display.
NOTICE
Do not use excessive force when pressing the touch screen panel.

SoilTest PRO Auto Soils Consolidator (ASC)
25-0500
Original Instructions 15 9901X0275 Issue 2
Display
The 7.0” display has a bright, easy to read character set and function icons which can be
seen under all internal lighting conditions. The screen is not adjustable but set at a
comfortable viewing angle.
Home Screen Keys
There are 4short-cut function icons that are used to control the operation of the system.
Test Start Menu
Software Update Menu
Tools/Settings Menu
Calibration Menu
Test Start Menu
This menu screen allows the user to:-
•View the status of test
•Stop a test
•Adjust the frame position
Tools/Settings Menu
This menu screen allows the user to:-
•Change the language and measurement units
•View or adjust comms port settings
•Adjust the date, time and display brightness
Calibration Menu
This menu screen allows the user to:-
•Enter default calibration values for the default transducers
•Use the diagnostic and miscellaneous functions
•Use the service functions

SoilTest PRO Auto Soils Consolidator (ASC)
25-0500
Original Instructions 16 9901X0275 Issue 2
Tools/Settings Menu
General Settings
General display settings and test units can be changed by selecting the Tools/Settings icon
from the Initial screen.
Setting the Time and Date
To set the date and time, select Set Date & Time and use the various + and - buttons to
adjust to the format shown on the screen.
The time can be displayed in 12 or 24 hour format. Selecting the US format box will change
the date format to MM/DD/YYYY.
Setting the Language
The operating language can be changed by selecting Set Language and choosing from one
of the pre-programmed language options available:

SoilTest PRO Auto Soils Consolidator (ASC)
25-0500
Original Instructions 17 9901X0275 Issue 2
Display Units
The display units selected define the units in which the measurement parameters are
displayed, and which units are used for sample dimensions, sample weight and sample
density. The following table shows the available section.
Units Load Dimensions Weight Density Stress
SI kN mm g kg/m³ kPa
US/Imperial lbf inch lb lbf/ft³ psi
Metric kgf cm g g/cm³ kgs/cm2
The default setting for the display units is S.I. To change this press Set Units and select the
required units.
Display Version
The Display Version will show the current version of the firmware running.

SoilTest PRO Auto Soils Consolidator (ASC)
25-0500
Original Instructions 18 9901X0275 Issue 2
Motor Drive and Home Position Setup
With the machine leveled the cross-head position can be checked or adjusted. Use the Test
Start Menu to control the height of the cross-head. Press the move up icon to move
the cross-head to its ‘HOME’ position.
During this process the display will show the ‘Status’ of the machine as ‘Unloading’. A pop-up
message will then show when the machine reaches its ‘Top Limit’ and then returns to the
‘HOME’ position.
Wait until the machine status shows it is at the ‘HOME’ position.
With the cell containing a stiff soil or its calibration
block, confirm there is sufficient headroom for the
cell to be inserted or removed from the frame with
about 1 mm (0.04”) clearance.
Check the cross-head is level and then lock in
position with the top threaded retainers.

SoilTest PRO Auto Soils Consolidator (ASC)
25-0500
Original Instructions 19 9901X0275 Issue 2
Default Sensor Calibration
WARNING
These default calibration values are only applicable to the default transducers supplied by
ELE International. The use of other transducers that do not have these characteristics may
result in damage to the machine. ELE International will accept no responsibility for damage
caused by using default parameters with different transducers.
Prior to calibration data from the DS8 application it is useful to use default calibration values
for the 15 kN and 15 mm sensors. This will be used to give an indication of the system
status.
Select the Calibration icon, enter the passcode (the default passcode is 937707) and
‘Calibrate’.
In turn select ASC Sensor 1 and 2. For ASC Sensor 1 and 2 select the DEFAULT option and
confirm. The parameters can then be viewed.
Sensor
Gain
Slope
Range (always S.I. Units)
1. Load Sensor
8
-13.75
15000 (N)
2. Displacement Sensor
9
0.0046
15 (mm)
NOTICE
The calibration data described below is not intended for the purposes of testing samples. It
is used as an indication of loading and is for safety purposes to prevent an overload
condition on the machine.

SoilTest PRO Auto Soils Consolidator (ASC)
25-0500
Original Instructions 20 9901X0275 Issue 2
User Defined Settings
There are a number of other miscellaneous system settings that are adjusted or viewed via
the Tools Menu under the User Defined Settings screen.
Comms Port Settings
The communication between the PC running the DS8 program and ASC is made via an
Ethernet connection. By checking the box Auto IP Address, the ASC becomes discoverable
on the network and the IP Address assigned to the machine is seen. This IP address needs
to be entered in the relevant DS8 screen to link the machine and application together.
In some situations where DHCP auto
IP address is not supported, it is
necessary to assign the machine’s IP
address manually. In this situation
deselect the Auto IP Address function
and then set up a static IP address
from the Calibration Menu, in the
Diagnostics & Miscellaneous, Network
Set-up section.
Using the up and down arrows, select
the parameter to be changed, then
select the ‘Edit’ button. Change the
ASC machine number to that required.
Change the Network address
parameter and then the ‘Enter’ key to
store these values. Exiting via the
‘Home’ key will leave the Network
address values unchanged.
The ASC has an RS 232 serial port for diagnostic connection only.
Settings for the diagnostic serial port are also shown on this menu but are not accessible by
the user.
Key Click Beeper and Adjust Display
From the Adjust Display menu, the Key Click beeper can be switched on or off. Check the
box marked Key Click to hear the beeper when a key is pressed. If the screen is not bright
enough to read in the ambient light conditions, adjust the Touch Screen Brightness. From the
Initial screen, press the Tools icon. Select Tools>User-Defined Settings>Adjust Display.
Press the + or – buttons to adjust the brightness accordingly. The system will automatically
save the new brightness setting in non-volatile memory.