VIAVI T-BERD/MTS-4000: How to change the battery
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Learn how to change the battery of a VIAVI T-BERD/MTS-4000 OTDR. All you need is a Phillips screwdriver!
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1:47
Learn how to change the battery of a VIAVI T-BERD/MTS-4000 OTDR. All you need is a Phillips screwdriver!