DV Power RMO200D User manual

RMO200D
MICROOHMMETER
Manual

2
RMO200D Contents
Contents
1 Introduction.........................................................................................................................................3
2 Safety Instructions...............................................................................................................................3
3 Designated Use ..................................................................................................................................4
4 Functionality........................................................................................................................................4
5 Description..........................................................................................................................................6
6 Getting Started....................................................................................................................................9
7 DV-Win Software...............................................................................................................................16
8 Remote Control.................................................................................................................................24
9 Error Messages.................................................................................................................................24
10 Technical Data..................................................................................................................................27
11 Accessories.......................................................................................................................................30
Manufacturer Contact Information..........................................................................................................30
Manual Version: RMO200D MV.10.05
This Manual refers to the firmware version RO2-10.05
IBEKO Power AB 2012
This Manual is a publication of IBEKO Power AB, 181 33 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.
IBEKO Power AB translates this Manual from its source language English into a number of other languages. Any
translation of this Manual is done for local requirements, and in the event of a dispute between the English and any
non-English versions, the English version of this Manual shall govern.

3
RMO200D Introduction, Safety Instructions
1 Introduction
This Manual contains helpful instructions on how to use RMO200D 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
RMO200D.
RMO200D must be used in observance of all existing safety requirements/ regulations from national/local
standards for accident prevention and environmental protection.
Reading the RMO200D Manual alone does not release the user from the duty of complying with all national
and international safety regulations relevant for working with RMO200D.
2 Safety Instructions
Before operating RMO200D, please carefully read the following safety instructions.
It is not recommended that the RMO200D will be used (or even turned on) without the understanding of this
Manual.
RMO200D should only be operated by trained and authorized personnel.
Rules for Use
 RMO200D 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.
 RMO200D is intended exclusively for the application areas specified in 
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 RMO200D. All service and maintenance work must be performed by qualified personnel.
Orderly Practices and Procedures
 The Manual should always be available on the site where the RMO200D is used.
 Before using RMO200D, all personnel (even personnel who only occasionally, or less frequent, work
with RMO200D) assigned to RMO200D should read the operations Manual.
 Do not undertake any modifications, extensions, or adaptations to the RMO200D.
Use RMO200D in conjunction with original accessories only.
RMO200D and its original accessories for its designated use only.
Cleaning
To clean RMO200D, use a cloth dampened with isopropanol alcohol or water.
Safe Operation Procedures
 Hazardous voltages of up to 400 V can occur inside RMO200D. Therefore is not permitted to open
RMO200D.

RMO200D into operation, check the test set for visible damages.
RMO200D under wet or moist conditions (condensation).
ate RMO200D when explosive gas or vapors are present.
RMO200D should only have external devices connected that meet the
requirements for SELV equipment according to EN 60950 or IEC 60950.
RMO200D, make sure that the air slots of the test set remain unobstructed.
RMO200D is opened by the customer, all guarantees are invalidated.
RMO200D seems to be functioning improperly, please contact the IBEKO Power AB (refer to
 after first checking the section Error Messages.

4
RMO200D Functionality
Do not use RMO200D without the extra protective ground (PE) cable set connected. Always establish
this connection as the first one before you do any other connections, and separate this connection as
the very last one.
Operator Qualifications
RMO200D should only be carried out by authorized and qualified personnel.
 Personnel receiving training, instruction, direction or education on the RMO200D should remain under
the constant supervision of an experienced operator while working with the test set and the test object.
Power Supply
Supply RMO200D only from a power outlet that is equipped with protective ground.
Instead of supplying RMO200D 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.
Warning
This is a class A product. In a domestic environment this product may cause radio interference in which
case the user may be required to take adequate measures.
3 Designated Use
The Micro OhmMeter RMO200D 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 RMO200D 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.
4 Functionality
4.1 Single Test
The RMO200D 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, RMO200D 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
RMO200D can generate DC current continuously using the Contin menu. In this menu the current can be
chosen the same way like in the Single menu, but the duration of the test can be preset. The test is started
pressing the START button. By pushing Ωbutton current test result is stored in internal memory. During the
test, a new result is shown on the display and stored into the PC (DV Win) approximately each second.

5
RMO200D Introduction
Using DV Win 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 1: Choose test current so that for the expected resistance you have maximum value of it.
Note 2: Using DV Win enables starting and controlling RMO200D from the PC. The results could be
stored to PC. Using DV Win after testings enables result transfer from the internal RMO200D
memory to PC.
Note 3: At the start of the test (Single, Continuous and CC), a check of cables connection is done. In
case of disconnection, or erroneous polarity, 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 as an error message.
During tests the high continued DC current will heat up the test set. To prevent RMO200D
from overheating, duty cycles apply. The duty cycles depend on the used test current, please
refer to section "Duty Cycles".

6
RMO200D Description
5 Description
5.1 Front Panel Components
5.2 Mains power and ground connectors
Display
UP/DOWN buttons to select
a menu, define a test current
and set test parameters
RIGHT button to navigate
in the active menu
ENTER button to confirm the
defined test parameters,
Language, and Date and Time
green LED
ntinuously when RMO200D is turned on.
test can be started.
 test.
red LED

y with the green LED during a test.
Rmax menu
is exceeded (or equaled)
Connector for
mains power supply
Power switch
I In this position, RMO200D is connected to the
mains power supply.
0 In this position, RMO200D is separated from
the mains power supply with both poles.
Earth/ground connector
For protection against parasitic currents or
voltages, always connect RMO200D
earth/ground 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 very last one.
STOP button to stop a test, to
acknowledge the alarm buzzer
and return to the current menu
SET button to scroll
between the menus
START button to start the
test current
Ωbutton to save the current
resistance value in Contin
menu

7
RMO200D Description
5.3 Settings
To set RMO200Ddate and time and Rmax press and hold SET button for 3 seconds to select
Settings menu.
Pressing STOP to cancel, returns you to the Single menu.
Setting RMO200D’s Language
To set RMO200D language, use the RIGHT button, and then ENTER button to select the Set Language
menu.
Move the cursor using the RIGHT button and select the language of your choice.
Pressing ENTER to confirm, returns you to the Settings menu.
Pressing STOP to cancel, returns you to the Settings menu.
Setting RMO200D’s Date and Time
To set RMO200D date and time, use the RIGHT button, and then ENTER button to select the Set date and
time menu.
Move the cursor to the position of your choice using the RIGHT button, and change the value with the
UP/DOWN buttons.
Pressing ENTER to confirm, returns you to the Settings menu.
Pressing STOP to cancel, returns you to the Settings menu.
Setting Rmax
To set RMO200D Rmax value, use the RIGHT button, and then ENTER button to select the Set Rmax
menu.
Figure 5-2:
The Language menu
Figure 5-3:
The Date and Time menu
showing RMO200D internal
date and time
Figure 5-1:
The Settings menu

8
RMO200D Description
In the Rmax menu, define the status of Rmax (On or Off) and assigned value of resistance.
Using RIGHT button move cursor to the position of status of Rmax menu, and using UP/DOWN buttons
select is it Off (figure 5-4) or On.
Using button RIGHT move cursor to the position of assigned value of resistance, and using UP/DOWN
buttons select desired value between 1  . First, initial value is 1000  (figure 5-4). When
device is turned off and then turned on, RMO200D remembers last saved setting of Rmax value and status.
Once these parameters are defined, press ENTER to change to the Settings menu.
Figure 5-4:
The Rmax menu

9
RMO200D Getting Started
6 Getting Started
6.1 Connecting a Test Object to RMO200D
Before you connect a test object to RMO200D, 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),
RMO200D itself is properly grounded. To do so, connect the grounding screw on the back of
RMO200D a grounding cable.
To maximize accuracy and measurement repeatability; make sure that all clamps have a good connection to
the test object and avoid any connection between Sense and Current clamps.
On/Off
Connect the earth/ground lead first before doing any connections to the test object.
Connect the mains lead to a mains outlet 100 V 240 V AC and turn on RMO200D with the power switch
on the test set. The first shown on the display is the name of the product followed by the instrument model
type and the internal firmware version.
6.2 Setting the Measurement Parameters
Single Test
Turn on RMO200D with the power switch on the test set. The display shows the Single menu and the green
LED lights up.
Figure 6-1:
Connecting a test
object to RMO200D
Figure 6-2:
The Single
menu
Test current
Memory position
Time
Menu name
Date
With RMO200D turned off, connect
RMO200D 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.
Pay attention to polarity while
connecting measuring cables.
Measuring results will be incorrect
as a consequence of error.

10
RMO200D Getting Started
Before a test can be started, the following needs to be defined in the Single menu:
Test current; the following values can be chosen:
5 A, 10 A, 20 A, 50 A, 100 A, 150 A and 200 A.
Memory position, 000-499
In the Single menu, define a test current for the test (here 200A). To do so set the value of your choice by
means of the UP/DOWN buttons.
Using button RIGHT move the cursor to the memory location position, and using UP/DOWN select desired
memory position to which obtained results would be saved. Once the test is completed the last measured
result will remain registered in RMO200D, and the memory position is automatically switched over to the
next memory position. The result can be recalled later by selecting that particular position number.
Continuous Test
Turn on RMO200D with the power switch on the test set. The display shows the Single menu. Go to Contin
menu using SET button or four times RIGHT button and then UP button. Press STOP to return to Single
menu.
In the Contin 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 r
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 Memory: 020) 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
RMO200D.
Note: In case of PC and DV Win 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 DV Win 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 RMO200D
Single Test
Before a test can be started, both test current and memory position need to be defined using the Single
menu. Once these parameters are defined, press ENTER to change to the Ready state.
Figure 6-4:
The Ready state
before the test
Figure 6-3:
The Contin
menu

11
RMO200D Getting Started
The Ready state displays the test current and memory position defined. If one of these values has to be
changed, press STOP to return to the Single menu.
The flashing green LED indicates that RMO200D is now ready to start the test. Press the START
button to run a test. At the start of the test, a cable connection check is done. In case of e.g. a
disconnection, an alarm is activated and the error message is shown on the display.
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 0 A to the defined maximum value (here 200A).
Once the current ramp reaches its maximum value, RMO200D 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, RMO200D ramps down the output current from the max. value to 0 A.
When 0 A 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 0 A.
Continuous Test
Before a test could be started, test current, its duration and memory location must be defined using Contin
menu. Press ENTER to change to the Ready state.
The Ready state displays selected test current (here 100A), its duration (here 60 sec) and memory location
of the result (here Memory: 020). If one of these values has to be changed, press STOP button to return to
the Contin menu.
The flashing green LED indicates that RMO200D is now ready to start the test. Press the START
button to run a test.
During the test, both green and red LEDs flash alternately. The display shows test curent
(here 100A) and the current value of the measured resistance (94,2µΩ). The time passed since
the test begining is also shown on the display (00:35).
Figure 6-5:
The Single
menu during
the test
Figure 6-6:
The Ready state
before the test
Figure 6-7:
The Contin menu
during the test

12
RMO200D Getting Started
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. By pushing Ωbutton current test result is stored in
internal memory.
Note: In case of PC and DV Win 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 DV Win 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 0 A.
6.4 Connecting of current clamp meter and measuring with both sides grounded unit
Measurement procedure
Turn on RMO200D with the power switch on the test set. The display shows the Single menu. Go to CC
menu by pushing SET button twice or using RIGHT button four times, DOWN button, RIGHT button three
times and then DOWN button.
Define a test current through the circuit breaker (here 200A) and memory position (here Memory: 012). Once
these parameters are defined, press ENTER to change to the Ready state.
Using RMO200D with current clamp meter it is
possible to make safer measurement of breakers
with both sides of the breaker grounded.
Measuring the current through the ground
connection and reducing this value from the total
current is an additional safety feature.
When connecting current clamp meter pay
attention that current circuit of the current clamp
meter is enough far away form the rest of current
circuits. In that way electromagnetic interference is
prevented. Distance between current cables must
be more than 10 cm.
Figure 6-8:
The CC menu
Figure 6-9:
The Ready state

13
RMO200D Getting Started
Press the START button to run a test. Upon completed test at selected memory location the measured result
will remain registered. It is the current through circuit breaker (difference between total test current and
current through current clamp meter), contact resistance of circuit breaker and the time when test is
performed. When defined test current could not be reached, RMO200D displays maximum possible reached
current.
The accuracy of measured resistance in this menu is lower then accuracy in Single or Contin menu due to
accuracy of current clamp meter.
Connecting of current clamp meter
Connect cables of the current clamp meter to the appropriate input terminals of device. By pressing the side
button open the current clamp meters jaws and clamp one conductor only. The jaw must be firmly closed
around the conductor. Make sure that conductor is passed through middle of the hole of current clamp
meter. Make sure that the angle is 90 degrees between central axis of conductor and plane of hole of
current clamp meter. The red LED light continuously indicates that current clamp meter works correctly. In
case that red LED is blinking it is necessary to change the battery. Select current range of 1000A. The
current clamp meter is ready to use.
6.5 Measurement parameters
Accuracy given in the table is valid if the maximum possible current is used.
Range
Recommended
Test Current
Nominal
Resistance
Full Range
Display
Resolution
Typical accuracy
1
100 A - 200 A



± 0,1 % rdg ± 0,1 % FS
2
100 A - 200 A



± 0,1 % rdg ± 0,1 % FS
3
100 A - 200 A



± 0,1 % rdg ± 0,1 % FS
4
50 A - 100 A



± 0,1 % rdg ± 0,1 % FS
5
20 A - 50 A


1
± 0,1 % rdg ± 0,1 % FS
6
10 A - 20 A



± 0,1 % rdg ± 0,1 % FS
7
5 A - 10 A



± 0,1 % rdg ± 0,1 % FS
8
5 A



± 0,1 % rdg ± 0,1 % FS
6.6 Viewing the Test Results
Once a Single or CC test is finished, RMO200D 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 6-10:
The Result menu
showing the test results
obtain in Single test
Max. test current reached
Voltage drop on the test
object
Memory position that
holds the results
Measured resistance of test object

14
RMO200D Getting Started
In the Result Menu, by pressing the START button the Demagnetization process will start. The whole
demagnetization process does not require modification of any connection, it is automatic and very quick.
After the Demagnetization is finis
seconds and the last results will be shown on the display again.
Now there are two choices:
Starting a new test with a different current value:
press the STOP button to change to the starting menu (Single, Contin or CC),
set a new current value and/or another memory position,
confirm your entries by pressing the ENTER button,
start the test by pressing the START button.
Starting a new test with the same current value:
press the STOP button to change to the starting menu (Single, Contin or CC),
press the ENTER button to change to the Ready state,
press the START button to run a test.
The current value remains the same as in the previous test, the memory position increases
by one.
If the Rmax menu is set to option On, once a Single or CC test is finished, RMO200D automatically
changes to the Rmax to display the test results in case the measured resistance is equal or greater than
maximum assigned value.
Figure 6-13:
The Rmax
showing the test
results
Measured resistance of test object
Figure 6-11:
The Result menu
showing the test results
obtain in Continuous
test
Memory position that
holds the results
Max. test current reached
Voltage drop on the test
object
Figure 6-12:
The Result menu
showing the test results
obtain in CC test
Measured resistance of test object
Memory position that
holds the results
Max. test current reached
Voltage drop on the test
object

15
RMO200D Getting Started
For Continuous Test, first time when the measured resistance is equal or greater than maximum assigned
value, RMO200D automatically stops the test and changes to the Rmax to display the last measured
resistance equal or greater than maximum assigned value and time of obtaining that.
The red LED lights continuously and the alarm buzzer is activated indicating that assigned maximum
value in Rmax menu is exceeded (or equaled).
6.7 Viewing Results of Previous Tests
RMO200D stores up to 500 test results. They can be viewed using the Memory menu at memory positions
000 ... 499.
Selecting a memory position on the Memory menu displays:
,
,
time of test (for continuous test),
,
time,
of this particular test.
Figure 6-14:
The Memory menu
showing the previously
saved test results of
memory, position 012 for
Single or CC test and 020
for Continuous test

16
RMO200D Getting Started
6.8 Deleting Results of Previous Tests
In the Memory menu, press ENTER.
Press ENTER once more to delete all saved measurements from the memory positions.
Press STOP to leave the Memory menu without deleting any measurements.
6.9 Duty Cycles
During tests, RMO200D generates a high DC current that heats up the test set. To prevent RMO200D 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 3 tests (sec)
Cooling time after
4 tests (sec)
5, 10, 20, 50,
100, 150, 200
0
0
C o n t i n u o u s T e s t
Test current
(A)
Maximal test duration
time (sec)
Cooling time
(sec)
5, 10, 20, 50,
100
300
0
150, 200
150
1 x test duration
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 START button. Cooling of RMO200D is supported by a
built-in fan that is automatically activated every time a test is started from the Ready state. It continues
running 5 minutes after the test is finished.
Table 6-16:
Cooling time
between
single
tests
Figure 6-15: The Memory
menu showing an option to
delete all saved
measurements from the
memory positions
Table 6-17:
Cooling time
between
continuous
tests

17
RMO200D DV-Win Software
7 DV-Win Software
DV-Win is a Windows program for working with Micro-Ohmmeters RMO series. It enables the two-way
communication RMO PC over USB port. Microsoft Office Excel program must be installed on the PC.
DV-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.
Note: Using DV-Win software, a device RMO device must be operated only from the DV-Win.
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 : Windows XP, Windows Vista, Windows 7
7.2 DV-Win installation
To install the DV-Win software do the following:
-Put the DV-Win installation CD in the CD-ROM drive,
-tart
-
-rowse
-Select the CD-ROM drive,
-DV-Win
-pen
-
-Follow the instructions displayed on the screen,
-When the installation process has been finished - exit the program.

18
RMO200D DV-Win Software
7.3 Starting DV-Win
Connect the USB port of the RMO Micro OhmMeter and the PC, with a USB cable.
Turn RMO on.
Start DV-Win:
-tart
-rograms
-Click on ''DV-Win,
-DV-Win,
or duble click at icon on the desktop.
The look of the DV-Win main menu is shown in the following illustration.
Now the RMO device can be controlled from the PC. The test mode is started by pr


19
RMO200D DV-Win Software
DVWin-RMO interface consist of main menu, three tabs (Test info, Test settings, Download), status bar,
toolbar and a table used for displaying results.
7.4 Test info
Test info tab contains fields with information about circuit breaker under test, operator, and environment
conditions. I you are using the instrument for the first time, all fields will be blank and you will need to enter
these information. Once you save the measurement results these information are also saved. Test info tab
will be automatically populated when measurement results from .dwo (internal DV-Win file format) file are
loaded. Clear All button on this form will instantly clear all data written in test info fields.
Note: Test info fields don't need to be filled in order to do the testing with RMO devices.
7.5 Test settings
The test settings tab contains test parameters and it is used to start new test or to stop test in progress. This
section briefly describes test parameters functions.
Operation mode:
Single - selects Single operation mode. Test is performed for fixed period of time. User can only
select desired test current and memory position for test.
Continuous - selects Contin operation mode. Test is performed for up to 300 seconds. User can
select actual test duration, test current, memory position and interval for this test. Omega button is
available and visible only in this mode after the test is started.
CC - selects CC (Current Clamp) operation mode. This test allows using Current Clamps for testing.
Test Settings:
Test curent - this field is used to set the test current. Test current is limited by RMO technical
capabilities. Check your RMO manual for further information.
Test duration - this field sets the duration of test in seconds. Test duration can be set in Continuous
operation mode only. Single and CC operation modes are performed for fixed amount of time.
Memory position - determines the memory location where the results of performed test are saved.
Memory position counter is increased automatically after each test. Memory position can also be set
manually by user

20
RMO200D DV-Win Software
Interval - Interval field allows user to record test results in specific time intervals set in seconds. This
field is unlocked only for Continuous mode of operation. Default interval setting denotes that
measurement will be recorded only once when the test is completed.
OMEGA - This button performs function of the omega button on RMO instruments, ie. it records last
measurement on click. Omega button is available and visible only in Continuous mode of operation.
Use standard parameters - If checked, this checkbox allows user to use standard fixed discrete test
parameters previously used in older DV-Win software for RMO devices. If unchecked, user can
manually enter desired test values for Test current and Test duration fields. DV-Win RMO is
designed to automatically set safe test parameters, if user unintentionally inputs non-allowed test
parameter values, so no harm can be done to the RMO device.
7.6 Download
The download tab allows user to transfer recorded measurements from RMO Device to personal computer.
Download is initiated by pressing Start button and it can be stopped at any time by pressing Stop button.
During data transfer progress bar will indicate transfer progress. Measurements can be selectively
downloaded by specifying date, date range, memory positions, current range or by specifying test mode.
7.7 Rmax Settings
Rmax settings are available via Tools - Rmax Settings menu. Rmax function of RMO devices is used to
detect when specific circuit breaker resistance value is reached during measurement. If Rmax value is
detected, RMO device will automatically stop performed test. This function is unchecked by default settings.