... /ADSL2/ ADSL2+ Model: DSL-3020V VDSL Tester Overview:DSL-3020V is a handheld VDSL tester, which provides full testing and analysis of ... - Digital Multi Meter, DMM is used to test loop resistance, insulation resistance, capacitance,AC/DC voltage and line length estimation- Tone ... Li-ion battery capacity with long timeoperation Applications:Specifications: VDSL Tester