DV Power RMO200, Manual

5

RMO200                                                                                                                                                             Functionality 

4    Functionality 

4.1  Single Test 

The RMO200 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, RMO200 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 

RMO200 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 

Ω

 button.    

During the test, a new result is shown on the display and stored into the PC 
(RMOWin) approximately 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 1: 

Choose measuring current so that for the expected resistance you have  

maximum value of it. 

Note 2:

Using RMOWin enables

starting and controlling RMO200 from the PC.    

The results could be stored to PC. 

        Using RMOWin after testings enables result transfer from the  

             internal RMO200 memory to

PC. 

Note 3:

At the start of the test (Single and Continuous), 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 asan error message. 

        During tests the high continued DC current will heat up the test set. To   
        prevent RMO200 from overheating, duty cycles apply. The duty cycles   
        depend on the used test current, please refer to section "Duty Cycles".