DV Power RMO600 User manual

RMO600
MICROOHMMETER
Manual
IBEKO POWER AB

2
RMO600 Contents
Contents
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3 Designated Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4 Functionality. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
5 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
6 Getting Started. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7 RMO Win Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
8 Remote Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
9 Kelvin Probes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
10 Error Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
11 Technical Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
12 Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Manufacturer Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Manual Version: RMO600. MV.04.21
IBEKO POWER AB 2005
This Manual is a publication of IBEKO POWER AB, 181 25 Lidingö, Sweden.
All rights including translation reserved. Reproduction of any kind, e.g., photocopying,
microfilming or storage in electronic data processing systems, requires the explicit consent of
IBEKO POWER AB.
Reprinting, wholly or in part, is not permitted.
This Manual represents the technical status at the time of printing. The product information,
specifications, and all technical data contained within this manual are not contractually binding.
IBEKO POWER AB reserves the right to make changes at any time to the technology and/or
configuration without announcement. IBEKO POWER AB is not to be held liable for statements
and declarations given in this manual. The user is responsible for every application described
in this manual and its results.
IBEKO POWER AB explicitly exonerates itself from all liability for mistakes in this manual.

3
RMO600 Introduction, Safety Instructions
1 Introduction
This manual contains helpful instructions on how to use RMO600 in a safe, proper
and efficient way.
Following these instructions can help you to avoid dangerous situations, repair
costs and other miss happenings due to incorrect operation. Furthermore it ensures
the reliability and life cycle of your RMO600.
RMO600 must be used in observance of all existing safety requirements/ regulations
from national/local standards for accident prevention and environmental protection.
Reading the RMO600 manual alone does not release the user from the duty of
complying with all national and international safety regulations relevant for
working with RMO600.
2 Safety Instructions
Before operating RMO600, please carefully read the following safety instructions.
It is not recommended that the RMO600 will be used (or even turned on) without
the understanding of this manual.
RMO600 should only be operated by trained and authorized personnel.
Rules for Use
• RMO600 should only be used when in a technically fit condition. Its use should
be in accordance with the safety regulations for the actual working site and
application. Always be aware of the dangers of high voltages and currents
associated with this equipment and its environment. Pay attention to the
information provided in the operations manual.
• RMO600 is intended exclusively for the application areas specified in
”Designated Use”. The manufacturer and distributors are not liable for
damage resulting from unintended usage. The user alone assumes all
responsibility and risk.
• The instructions provided in this manual are considered part of the rules
governing proper usage.
• Do not open RMO600.
Orderly Practices and Procedures
• The manual should always be available on the site where the RMO600 is used.
• Before using RMO600, all personnel (even personnel who only occasionally, or
less frequent, work with RMO600) assigned to RMO600 should read the
operations manual.
• Do not undertake any modifications, extensions, or adaptations to the RMO600.
Cleaning
To clean RMO600, use a cloth dampened with isopropanol alcohol or water.

4
RMO600 Safety Instructions, Designated Use
Operator Qualifications
• Testing with RMO600 should only be carried out by authorized and qualified
personnel.
• Personnel receiving training, instruction, direction or education on the RMO600
should remain under the constant supervision of an experienced operator while
working with the test set and the test object.
Safe Operation Procedures
• Hazardous voltages of up to 400V can occur inside RMO600. Therefore is not
permitted to open RMO600.
• Do not insert objects (e.g., screwdrivers, etc.) into the ventilation slots.
• Before putting RMO600 into operation, check the test set for visible damages.
• Do not operate RMO600 under wet or moist conditions (condensation).
• Do not operate RMO600 when explosive gas or vapors are present.
• The serial interface of RMO600 should only have external devices connected that
meet the requirements for SELV equipment according to EN 60950 or IEC 60950.
• When setting up RMO600, make sure that the air slots of the test set remain
unobstructed.
• If RMO600 is opened by the customer, all guarantees are invalidated.
• If RMO600 seems to be functioning improperly, please contact the IBEKO POWER
AB (refer to section ”Manufacturer Contact Information”).
• Do not use RMO600 without the extra protective ground (PE) cable set connected.
Power Supply
• Supply RMO600 only from a power outlet that is equipped with protective ground .
• Instead of supplying RMO600 from phase – neutral (L1-N, A-N), it may also be
supplied from phase – phase (e.g., L1-L2; A-B). However, the voltage must not
exceed 240 V AC, please refer to section Technical Data.
3 Designated Use
The Micro OhmMeter RMO600 is designed for measuring contact resistances of
non-inductive test objects used in the electric power industry or similar branches.
It is employed for resistance measurement during manufacturing, commissioning
and testing of:
power circuit breakers,
interrupters,
bar installation,
cable splices,
welded joints,
grounding.
Any other use of the RMO600 than the ones mentioned above is to be considered
improper and will not only invalidate all customer warranty claims but also exempt
the manufacturer from its liability for repair or exchange.

5
RMO600 Functionality
4 Functionality
4.1 Single Test
The RMO600 generates a filtered (true) DC current and outputs it in an
automatically regulated current ramp. The current increases with a constant
slope from zero up to a set maximum value. When the current has reached its
maximum, RMO600 measures the resistance of the test object. After test the
output current ramps back down to zero with a constant slope. By sloping the
current up and down, magnetic transients are virtually eliminated.
4.2 Continuous Test
RMO600 can generate DC current continuously using the Cont menu. In this
menu the current can be chosen the same way like in the Sing menu, but the
duration of the test can be preset. The test is started pressing the Ωbutton.
During the test, a new result is shown on the display and stored into the PC
(RMOWin) each second. Using RMOWin the result can be printed like an
Excel table which later can be shown as a diagram and used for a report.
Test is completed when the test time previously set in the menu has elapsed, or
when the STOP button is pressed.
By pushing STOP button test could be performed at any time. In case of test
interruption by pushing the STOP button, the last measured result will remain
saved in the internal memory.
Upon expiry of the selected test lasting time, the last result remains saved at
selected memory location.
Note: At the start of the test (Single and Continuous), a check of cables
connection is done. In case of disconnection, an alarm is activated,
and the error message is shown on the display.
Voltage sense cables disconnection, occured during the test, will cause
an erroreous result. The display will not show this asan error message.
During tests the high continued DC current will heat up the test set. To
prevent RMO600 from overheating, duty cycles apply. The duty cycles
depend on the used test current, please refer to section "Duty Cycles".

6
RMO600 Description
5 Description
5.1 Front Panel Components
Display
UP/DOWN buttons to select
a menu, define a test current
and set test parameters
LEFT/RIGHT buttons to
navigate in the active
menu
ENTER button to confirm the
defined test parameters,
Lan
g
ua
g
e
,
and Time and Date
STOP button
Press to stop a test or stop the alarm buzzer.
Ωbutton
Press to start a test. Test parameters must be selected
beforehand.
green LED
• Lights continuously when RMO600 is turned on.
• Flashes when a test can be started.
• Flashes alternately with the red LED during a test.
red LED
• Lights continuously in case of operational error.
• Fl
as
h
es
a
l
te
rn
ate
l
y
wi
t
h
t
h
e
g
r
ee
n LED
dur
in
g
a
test
.
STOP button to stop a test, to
acknowledge the alarm buzzer
and return to the Sin
g
menu

7
RMO600 Description
5.2 Rear Panel Components
5.3 Setting RMO600’s Language
To set RMO600’s language, use the LEFT button, and then UP/DOWN buttons to
select the Language menu.
Move the cursor to the bottom line using the LEFT/RIGHT buttons, and select the
language of your choice.
Pressing ENTER to confirm, returns you to the Sing menu.
Pressing STOP to cancel, returns you to the Sing menu.
5.4 Setting RMO600’s Time and Date
To set RMO600’s internal time and date, use the LEFT button, and then UP/DOWN
buttons to select the Time menu.
Move the cursor to the position of your choice using the LEFT/RIGHT buttons, and
change the value with the UP/DOWN buttons.
Pressing ENTER to confirm, returns you to the Sing menu.
Pressing STOP to cancel, returns you to the Sing menu.
Connector for
mains power supply
Power switch
I In this position, RMO600 is connected to the
mains power supply.
0 In this position, RMO600 is separated from
the mains power supply with both poles.
Equipotential connector.
For protection against parasitic currents or
voltages, always connect RMO600
equipotential connector to protective ground
(PE).
Use only the original cable.
For safety reasons, always establish this
connection as the first one before you do
any other connections, and separate this
connection as the ver
y
last one.
Figure 5-1:
The Language
menu
Figure 5-2:
The Time menu showing
RMO600’s internal time and date

8
RMO600 Getting Started
6 Getting Started
6.1 Connecting a Test Object to RMO600
Before you connect a test object to RMO600, make sure that:
• the test object is disconnected or separated from its circuit in accordance with
the national safety regulations,
• the test object is properly grounded to protective earth (PE),
• RMO600 itself is properly grounded. To do so, connect the grounding screw on
the back of RMO600’s to PE using a grounding cable.
6.2 Setting the Measurement Parameters
Single Test
Turn on RMO600 with the power switch on the back of the test set. The display
shows the Sing menu.
In the Sing menu, define a test current for the test. To do so set the value of your
choice by means of the UP/DOWN buttons.
The memory position (here m:30) denotes a position the test data is stored during
the test. It can be recalled later by selecting that position’s number.
Once a test is finished, the memory position is automatically switched over to the
next position.
Figure 6-1:
Connecting a test
object to RMO600
Figure 6-2:
The Sing
menu
Test current Memor
y
p
osition
Time
Menu name
Date
With RMO600 turned off,
connect RMO600 to the test
object (RX) in such a way that
the measuring cables from
the "Voltage Sense" sockets
are attached as close as
possible to RX, and in
between the current feeding
cables. That way, resistance
of both cables and clamps is
almost completely excluded
from the resistance
measurement.

9
RMO600 Getting Started
Continuous Test
Turn on RMO600 with the power switch on the back of the test set. The display
shows the Sing menu.
Go to Cont menu using LEFT, and then UP button.
In the Cont menu, define a test current, memory location and test current duration
time.
Using RIGHT button move cursor to the position of test current, and using UP/DOWN
buttons select desired value. Maximum duration of the current depends on its
value, please refer tu section “Duty Cycles”.
Using RIGHT button move cursor to the position of test current duration
(here 60 sec), and using UP/DOWN buttons select desired value.
Using button RIGHT move cursor to the position of memory location, and using
UP/DOWN select desired memory position (here m:40) to which obtained results will
be saved. Upon performed test (either due to time expire or due to push to the
STOP button) the last measured result will remain registered in RMO600.
Note: In case of PC and RMOWin software use during the test, all performed
measurements will be registered. Results will be shown in a table in Excel
format with option of additional edit and graphic presentation.
Using RMOWin after testing for transfer of results from selected internal
memory location to PC, it is possible to transfer only the result of the last test.
6.3 Measuring with RMO600
Single Test
Before a test can be started, both test current and memory position need to be
defined using the Sing menu. Once these parameters are defined, press ENTER to
change to the Test menu.
The Test menu displays the test current and memory position defined. If one of
these values has to be changed, press STOP to return to the Sing menu.
The flashing green LED indicates that RMO600 is now ready to start the test.
Press the Ωbutton to run a test.
Figure 6-4:
The Test menu
before the test
Figure 6-3:
The Cont menu

10
RMO600 Getting Started
During the test, both the green and the red LEDs flash alternately. The display
shows a graphical representation of the output current that ramps from 0A to
the defined maximum value (here 400A).
Once the current ramp reaches its maximum value, RMO600 measures the
current through the test object and the voltage at the test object for 1s, calculates
the resistance from these values, and saves the data at the present memory
position.
Afterwards, RMO600 ramps down the output current from the max. value to 0A.
When 0A is reached, the test is finished and the green LED lights up.
Note: To stop the test prematurely, press the STOP button at any time during
the test. The current will immediately drop to 0A.
Continuous Test
Before a test could be started, test current, its duration and memory location must be
defined using Cont menu. Press ENTER to change to the Test menu.
The Test menu displays selected test current (here 300A), its duration (here 60 sec)
and memory location of the result (here m:40). If one of these values has to be
changed, press STOPbutton to return to the Sing menu.
The flashing green LED indicates that RMO600 is now ready to start the test.
Press the Ωbutton to run a test.
During the test, both green and red LEDs flash alternately. The display shows
test c curent (here 300A) and the current value of the measured resistance (94.2µΩ).
T The time passed since the test begining is also shown on the display (00:35).
Upon completed test (due to expire of selected time or due to push to the STOP button)
at selected memory location the last measured result will remain registered.
Figure 6-5:
The Test menu
during the test
Figure 6-6:
The Test menu
before the test
Figure 6-7:
The Test menu
during the test

11
RMO600 Getting Started
Note: In case of PC and RMOWin software use during the test, all performed
measurements will be registered. Results will be shown in a table in
Excel format with option of additional edit and graphic presentation.
Using RMOWin after testing for transfer of results from selected internal
memory location to PC, it is possible to transfer only the result of the last
test.
To stop the test prematurely, press the STOP button at any time during the test.
The current will immediately drop to 0A.
6.4 Optimizing test
Accuracy given in the table is valid if the maximum possible current is used.
Range Test
Current
Nominal
Resestance
Full Range
Display
Resolution Accuracy
1 400A 100 µΩ99,9 µΩ0,1 µΩ±0,5% rdg±0,5% FS
2 300A 1 mΩ999 µΩ1 µΩ±0,25% rdg±0,25% FS
3 200A 10 mΩ9,99 mΩ10 µΩ±0,25% rdg±0,25% FS
4 100 A 25 mΩ25,0 mΩ0,1 mΩ±0,25% rdg±0,25% FS
5 50 A 50 mΩ50,0 mΩ0,1 mΩ±0,25% rdg±0,25% FS
6 20 A 100 mΩ99,9 mΩ0,1 mΩ±0,5% rdg±0,5% FS
7 10 A 250 mΩ250 mΩ1 mΩ±0,5% rdg±0,5% FS
Note: For resistance value less than 10 µΩaccuracy is ±0,5% rdg ±2 µΩ.
For resistance value less than 30 µΩaccuracy is ±0,5% rdg ±1 µΩ.
While using RMOWin the result is shown with one more decimal so that
the result has ten times better resolution.
6.5 Viewing the Test Results
Once a Single test is finished, RMO600 automatically changes to the Result menu
to display the test results.
For Continuous Test only the last performed test is shown.
Note: If the defined test current could not be reached, this could be due to a
too high contact resistance of the test object and/or of the current cables.
The test current value displayed here is the maximum test current
reached.
Figure 6-8:
The Result menu
showing the test
results
Max. test current reached
Memory
position
that holds
the results
Measured resistance of test o
bject

12
RMO600 Getting Started
Now there are two choices:
1. Starting a new test with a different current value:
– press the
STOP button to change to the Sing menu,
– set a new current value and/or another memory position,
– confirm your entries by pressing the ENTER button,
– start the test by pressing the Ωbutton.
2. Starting a new test with the same current value:
– press the
STOP button to change to the Sing menu,
– press the
ENTER button to change to the Test menu,
– press the
Ωbutton to run a test.
The current value remains the same as in the previous
test, the memory position increases by one.
6.6 Viewing Results of Previous Tests
RMO600 stores up to 100 test results. They can be viewed using the Memory
menu at memory positions 0 ... 99.
Selecting a memory position on the Memory menu displays:
• the current fed into the test object,
• the memory position of these results,
• the test object’s measured resistance,
• the date or the time,
of this particular test.
To view the creation date of the test rather than the time, position the cursor on the
latest number of the memory position (here 0), and use the RIGHT button to toggle
between date and time.
6.7 Printing the Test Results
RMO600 stores up to 100 test results. They can be printed using the Print menu at
memory positions 0 ... 99.
Connect the RS232 port of the RMO600 and the printer with a printer’s serial cable.
Go to Print menu using LEFT and then UP button. Selecting first and last memory
position and press ENTER button. The results that are located in the range between
this memory locations, including the chosen memory locations, will be printed.
Figure 6-9:
The Mem menu showing the
previously saved test results
of memory position 30
Figure 6-10:
The Print menu showing
first and last memory
position

13
RMO600 Getting Started
Seting printer, as well as look of RMO Test Report where given at figures below.
6.8 Duty Cycles
During tests, RMO600 generates a high DC current that heats up the test set.
To prevent RMO600 from overheating, certain duty cycles apply depending on
the used test current.
S i n g l e T e s t
Test current
(A)
Cooling time between
first 4 tests (sec)
Cooling time after
4 tests (sec)
10, 20, 50
100, 200 0 0
300 5 20
400 10 30
500 20 60
600 30 90
C o n t i n u o u s T e s t
Test current
(A)
Maximal test duration
time (sec)
Cooling time
between tests (sec)
10, 20, 50, 100 300 0
200 150 200
300 90 300
400 50 400
500 30 500
600 20 600
A built-in control prevents these cooling times from being skipped. If you try to
start a test within the cooling period, the display shows "Wait" and a timer
counting down. After the cooling period has elapsed, start the test using the set
test parameters by pressing the Ωbutton. Cooling of RMO600 is supported by
a built-in fan that is automatically activated every time a test is started from the
Test menu. It continues running 5 minutes after the test is finished.
Table 6-11:
Cooling time
between
single
tests
Table 6-12:
Cooling time
between
continuous
tests

14
RMO600 RMOWin Software
7 RMOWin Software
RMO Win is a Windows program for working with Micro OhmMeters RMO series.
It enables the two-way communication RMO – PC over the serial port RS232.
RMO Win supports the following functions:
- Controlling and starting RMO when the tests are performed from the PC,
the results could be stored to PC; results reading interval is adjustable,
- The transfer of the test parameters from the local RMO memory to the PC with
the possibility of writing the notes on objects being measured and appropriate
comments.
The transferred data from RMO is possible to:
- Display in the form of tables,
- Download as an Excel file.
Every test reading parameters contain:
- The date and the time of the test,
- The real test-current,
- The voltage on the voltage terminals (Voltage Sense),
- The measured resistance value,
- The memory location,
- The name of the object (tested device) and the useful comments.
7.1 The minimum system requirements
Processor : Recommended > 500 MHz
Memory : min 32 Mb
Operating system : 95/98, NT, XP, 2000
The hard disk space : > 10 Mb
7.2 RMOWin installation
To install the RMO Win software do the following:
- Put the RMO Win installation CD in the CD-ROM drive,
- Click on ”Start”,
- Click on ”Run”,
- Click on ”Browse”,
- Select the CD-ROM drive,
- Highlight the ”RMOWin-V2.EXE”,
- Click on ”Open”,
- Click on ”OK”,
- Follow the instructions displayed on the screen,
- When the installation process has been finished - exit the program.

15
RMO600 RMOWin Software
7.3 Starting RMOWin
Connect the RS 232 port of the RMO Micro OhmMeter and the PC, with a serial
cable.
Turn RMO on.
Start RMOWin:
- Click on ”Start”,
- Click on ”Programs”,
- Click on ''RMOWin-V2’’,
- Click on ‘’RMOWin-V2’’,
or duble click at icon on the desktop.
The look of the RMO Win main menu is shown in the following illustration.
If in the ”Communication” field the green led-diode and the sign ”ON” are lit, the
communication has been established and the program is ready to be used.
You can change port:
- Click on ”Tools”,
- Click on ”Choise of Comm Ports”,
- Click on the chosen port wich is not in use,
- Click on ''OK''.
If in the ”Communication” field the green led-diode and the sign ”ON” are lit, the
communication has been established and the program is ready to be used.
The illustration below depicts the main menu.

16
RMO600 RMOWin Software
Download
Data From RMO
With this command the results from the internal RMO memory can be transferred to
the PC. The transfer is possible only if the serial port RMO is connected, with the
appropriate cable, to the PC and the green led diode ”Communication” is lit (ON).
The results a user wants to transfer from the RMO memory to the PC are possible
to choose according to a selected criterion:
All
File
Open
Opening the file.
Save As
Saving the table in the working
directory.
Print
Printing the active table.
Exit
Exiting the program.
All the test results are being
transferred from the internal RMO
memory to the PC.
Memory from-up to
It opens a new window that allows
a choice of memory locations to
be transferred to the PC.
The results that are located in the
range between the memory
locations, including the chosen
memory locations, will be
transferred to the PC. The more
detailed description on how to use
the memory locations can be
found in the RMO manual.

17
RMO600 RMOWin Software
Date
Date from – up to
After choosing the wanted transfer criterion it is recommended to write the
name of the object (device) on which the tests took place as well as comments
(14 character max) that can be used in the future analysis of the results. These
comments will be displayed in the table together with the results.
The results that are filled in on the
chosen date are going to be
transferred to the PC.
After choosing this option, a new
window appears. It provides a
choice of selecting a time-interval
when the measurement was done.
The results received during the time
period between the chosen dates,
including the chosen dates, are
going to be transferred to the PC.
Current from – to
Selecting this option opens a new
window, providing a selection of
the currents that were used during
the test. The choice of the current
is made on the drop-down menu.
The range of the values that are
between and including the
selected values of the current, are
going to be transferred to the PC.

18
RMO600 RMOWin Software
Transfer
Stop
The results table
When the results are transferred to the PC, the table with the layout shown on the
illustration below will be displayed:
- Memory : the number of the memory location in the RMO in which the test
results are
- Date : the date of the test
- Time : the time of the test
- Current : the real test current
- Voltage : the measured voltage on the Voltage Sense
- Resistance : the measured resistance
- Object : the name of the object
- Code : the code of the tested object
- Comments : comments
After pressing this key, the selected results are going to be transferred from the
internal RMO memory to the PC. Unless the user chooses some other option, all the
results from the RMO memory will be transferred (the option All is a default).
After pressing the command transfer, the graphical bar is being displayed showing a
status of the transfer.
A user should press the “Stop” button if for whatever reason he wants to
interrupt a transfer. After pressing this key all the choices are being erased and
a user will return back to the main menu.
Save
Saving the table as an Excel
file. Initially it will be
suggested to save in the
working directory.
Print
Printing the table
Exit
Returning to the main menu.

19
RMO600 RMOWin Software
Tools
Now the RMO can be controlled from the PC.
Clicking with the mouse on any key of the keyboard has the same effect as pressing
the keys on the RMO.
In case that the green led diode is not lit in the “Communication” window, i.e. the red
led diode is lit, it is necessary to check the following:
- Is the green led diode on the RMO lit?
- Is the RMO signaling any error?
- Is the serial cable connected tightly?
- Double-check the choice of the serial port.
Clearing of table
Erasing all the data from the main menu board.
Choise of Comm Ports
Choosing the otherPC serial port.
This window provides a choice of
the other active serial port to be
used. After a choice has been
made, the green led diode
”Communication” is going to be lit
and the same text as on the RMO
display is going to be shown on
the monitor.

20
RMO600 RMOWin Software
It is highly recommended to write the information in the columns ”Object”, ”Code”
and ”Comments” for better systemization of the saved results.
The new test moves the previous test results down so the first line represents the
last performed test.
The way of measuring the resistance is described in details in the RMO Manual.
If a user wants to analyze these results later, it should be saved on the hard disk.
The table is going to be saved as an Excel file, so it can be later used with all
Excel functions.
Options
Output format
Defines the file format of the saved table.
Data format
Defines the date format that is going to be shown in the table with the results of the
test.
Working directory
The selection of the
working directory
that is going to be
the default one for
opening and saving
the tables and the
files.