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OPERATOR MANUAL 

EXLRT 

Ref: XLR-104 

© 2020 MK Test Systems Ltd

 

Page 21 of 28 

11

 

S

INGLE 

S

HOT 

M

EASUREMENTS

 

The   icon appears on the LCD screen to indicate that the ExLRT is in single shot mode. 

 

Initiating a single shot test 

Refer to the table below on how to initiate a test.

 

CONNECTED 

CABLES 

TEST 

WAITING 

INDICATOR 

HOW TO INITIATE A TEST 

Loop cable 

ONLY 

Loop cable 

green led 

flashing 

 

Press the green button on the In-Line 

controller or press the 

 button to 

initiate a test. 
When the test stops, the loop value or 

the loop error will latch on the screen. 
If an error is shown, then press the loop 

inline controller to clear the error to 

return to flashing green status. 

Loop cable 
AND  
Joint cable 

 
 
Loop cable 

green LED 

flashing 
 
 
 
 
 
 
 
Joint probe 
green LED 

flashing 
 
 
 
 

 
Press the green button on the In-Line 

controller. This will perform a loop only 

test (Joint indicator and data is cleared) 
 

When the test stops, the loop value will latch on the screen and 

both the loop and joint LED’s will flash green. 
If an error is shown, then press the loop inline controller red 

button to clear the error to return to flashing green status. 

OR 

Connect the tips of 

the joint probes to 

the UUT to initiate 

a joint test. 
 

Both loop and joint measurements will be cleared for the duration 

of the test 
When the test stops, the ExLRT will latch the valid measurements 

until the next measurement is started 
If an error is reported for a given test, then the ExLRT will latch the 

error until the red button is pressed for that measurement type. 

During this latched period, the other measurement type will clear 

its indicator. 

 

Summary of Contents for ExLRT

Page 1: ......

Page 2: ...T Ref XLR 104 2020 MK Test Systems Ltd Page 2 of 28 OPERATOR MANUAL EXLRT XLR 104 1 Author Giuseppe Prisco Date 12th December 2019 Reviewed Jamie Spiller Date 5th February 2020 Approved Alan Wilson Da...

Page 3: ...g out of the use of the information contained within this safety manual The information contained within the safety manual is the property of MK Test Systems Ltd and reproduction in whole or part shal...

Page 4: ...Manual Menu 16 Manual measurement modes 17 Overview 17 10 Continuous mode measurements 18 Starting Continuous 18 Pausing continuous mode measurements 18 Resuming continuous mode 18 Exiting from conti...

Page 5: ...understand the operation of the ExLRT and its associated components This manual does not include safety information for the ExLRT Refer to document XLR 927 Do not operate the ExLRT without reading an...

Page 6: ...easure the bond joints within the loops The ExLRT uses current couplers that non intrusively couple an AC signal into the loop A drive coupler is used to inject the signal with a known voltage and a s...

Page 7: ...04 2020 MK Test Systems Ltd Page 7 of 28 ExLRT Overview Power input Joint Connector Power on button USB Connector Loop Connector LCD Display Joint status indicator Loop status indicator Battery compar...

Page 8: ...joint measurements The indicators act as repeaters to the LEDs situated on the Loop and Joint cables The indicator colours identify the following test status Loop status indication Joint status indic...

Page 9: ...LED states to indicate the state of the battery Charger State Normal working condition LED 1 Left LED 2 Right Ready to Charge Battery not installed Off Green Charging Red Green Battery Inserted and fu...

Page 10: ...permissions Once the verification is performed and the ExLRT has passed the ExLRT and will display the icon when the correct combination of cables are connected to the ExLRT Calibration Warning Date...

Page 11: ...e used as calibrated The designed nominal value is 9 5m but expect to see small deviations in measurement for each ExLRT manufactured MK does not hold itself responsible if the Self Test Loop yields a...

Page 12: ...Supports multiple users Login using user ID and Password Up to 32 users Setup with permissions restrictions Up to 15 user configurations one allocated for Customer Administrator Icons showing the fol...

Page 13: ...not calibrated Configuration Level of configuration is displayed depending on user permissions Calibrated Displayed when the has been Calibrated and has its associated verified cables are connected N...

Page 14: ...straight to the ExLRT main menu See section 8 Main Menu See document XLR 105 Section ExLRT Device Settings to how to configure Log On Enter User ID If login is enabled at start up then the ExLRT will...

Page 15: ...he device Proceed to measurement screen Press the to proceed straight to the measurement screen If manual mode is set to Continuous go to section 10 Continuous mode measurements If manual mode is set...

Page 16: ...select See section To operate in single shot mode use the up down buttons to highlight Single shot then press the select button See section 11 Single Shot Operating the ExLRT temporarily in the non d...

Page 17: ...two decimal places If the joint measurement is not valid the ExLRT will null the 7 segment display and show a description of the error on the dot matrix display Joint measurements A joint measurement...

Page 18: ...ements To take a joint measurement simply connect the joint probes to the UUT Pausing continuous mode measurements To halt continuous mode measurements press any of the red buttons on the in line cont...

Page 19: ...n During continuous mode measurements with averaging enabled the following will be shown in the dot matrix area If the joint probes are not connected J Latest will not appear Below is a description of...

Page 20: ...ger on Resistance Limits Both methods can be enabled at the same time or either method can be applied individually The use of triggering is to primarily fault find suspect loops The ExLRT triggering f...

Page 21: ...op cable green LED flashing Joint probe green LED flashing Press the green button on the In Line controller This will perform a loop only test Joint indicator and data is cleared When the test stops t...

Page 22: ...he valid measurements After the joint test the ExLRT will re start the joint process probe green LED flashing If a joint error was detected the joint probe red LED will flash until the user clears the...

Page 23: ...roll buttons to highlight the option then press the select button to enter the selected menu 14 EXLRT UNIT 15 CABLE Entering this screen will provide live information of the connected cables As an exa...

Page 24: ...f 28 16 CALIBRATION INFORMATION 17 SETTINGS MENU Go to section 18 to enter the Measurement menu Go to section 19to enter the Calibration menu Go to section 20to enter the Settings menu Select Go back...

Page 25: ...he configuration at the time of logging in Use the scroll buttons to highlight the desired option then press the button to go to the value Once the value has been highlighted press the button to toggl...

Page 26: ...the Change Trigger Limits screen Toggle to to turn triggering off default when entering this screen Change of reading To change the value press the select button to enter the change value window Chan...

Page 27: ...n in 1m steps using the increase decrease buttons When finished press the button to move on to the decimal place part of the resistance No Action Increase value Go to lower Go back to listing Decrease...

Page 28: ...der to use this function 20 SYSTEM This window displays any specific hardware setting 21 CALIBRATION VERIFICATION To run a verification program the ExLRT must be controlled via MK ExLRT PC Software Af...

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