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5.2 General Specifications for the 3M
™
Shoes and Wrist Strap Tester 747
Ambient Operating Conditions The unit should always be operated indoors, max. 6.562’ (2000 m) height
Ambient Storage Conditions
Do not store or use the unit where it will be exposed to direct sunlight,
high temperatures, high humidity or condensation. If exposed to such
conditions, the unit may be damaged, the insulation may deteriorate, and
the unit may no longer satisfy its specifications.
Power Supply “AA,” LR6 alkaline battery x 6 (1.5VDC)
AC adapter. Input: 100 - 250VAC; Output: 9VDC @ 1.4 A rated load; Output
plug dimensions: 4.8 mm O.D. x 1.7 mm I.D. x 9.5 mm Length Output plug
polarization: center positive
AC adapter must have all local required regulatory certifications
Interface RS-232C and open collector output
External Jack Three select qualitative testing thresholds, and one selects the test type
results to be available at the OUTPUT jack
Selection Switches Threshold resistance selection switch x 3
Test result output selection switch x 1
Accessories AC adapter
ESD shoe testing cord
Wall-mounting board
Instruction manual, CD
ESD shoe testing plate
Mounting screw for ESD shoe testing plate (with washer)
Alkaline battery x 6
6.0 Maintenance & Service
6.1 Battery Replacement Indicator
To reduce the risks associated with hazardous voltage, which, if not avoided, may result in minor or
moderate injury and/or property damage:
• When replacing batteries, turn the power switch off and disconnect all the cables before beginning.
• Always replace battery cover before using the 3M
™
Shoes and Wrist Strap Tester 747.
CAUTION