3M 747 manual ALL setting is described in .1, Open Collector Output

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The ALL setting is described in Section 4.1, “Open Collector Output.”

Error Message

Meaning

Err.1

Finger removed from touch panel during

 

measurement

Err.2

Actual test type does not match specified

 

test type

O.F.

Measured value exceeded 200.0 ΜΩ

 

(Overflow)

Solution

Repeat the test

Check test type (location), and repeat the test

Check test type and connections, and repeat the test

3.1 ESD Shoe Testing with the 3M™ Shoes and Wrist Strap Tester 747

This procedure tests the effectiveness of ESD protective shoes, and displays the actual measured resistance value along with the qualitative test result.

1.Ensure that the supplied shoes testing cable is connected between the shoe testing plate and the shoe testing connector. Refer to section 2.1, “Connecting the ESD Shoe Testing Plate.”

2.Select the required threshold resistance values. Refer to Section 2.2, “Threshold Resistance Settings (1).”

3.The wrist strap must not be connected to the front panel connector during shoe testing. If it is connected, remove it.

4.Step on the shoe testing plate, then press the touch panel with your finger. Continue pressing the touch panel until measurement is completed (until the . indicator goes out).

Testing starts and the following indicators are displayed:

• and symbol appear on the LCD.

•The shoe LED lights yellow.

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Contents 3M Shoes and Wrist Strap Tester Table of Contents Introduction InspectionExplanation of Safety Label Signal Words & Symbols Intended UsePage Overview Product OutlineLCD Indicators Side Panels Back SidePreparation Before Testing Connecting the ESD Shoe Testing PlateShoes Power Preparation Installing and Replacing the Batteries Power Saver Function Turning Power On and OffTurning Power Off AC Adapter ConnectionTesting Wall MountingALL setting is described in .1, Open Collector Output ESD Shoe Testing with the 3M Shoes and Wrist Strap TesterImportant Note Use single-conductor wrist straps only External Output Function Open Collector OutputInternal Circuit Test Result Output SettingsTest Result Output Terminal Shoe and Wrist Strap ALL Setting Open-Collector OutputSpecifications RS-232C CommunicationsPC System Requirements PC ConnectionCable Connections Measurement Section Measurement Resistance Range 0 to 200.0 MΩMaintenance & Service Battery Replacement IndicatorError Messages LCD can display the following error messagesOperational Verification Test CleaningTesting Considerations Test Set-Up Testing Wrist Strap RangesEquipment Required Wrist Test Table Testing Wrist Low Limit Refer to Wrist Test TableTesting Wrist High Limits Refer to Wrist Test Table Testing Shoe Ranges Testing Shoes Low Limits Refer to Shoes Test TableWeee Statement Regulatory InformationShoe Test Table CULus StatementFCC Electronic Solutions Division Static Control Products
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