
VF / DSL Cable Qualifier
iv
8.4..N
OISE MEASUREMENTS ....................................................................................................... 106
8.4.1 Setting up a Noise Test ..............................................................................................107
8.4.2 Running a Noise Test.................................................................................................112
8.5..LONGITUDINAL BALANCE TEST ............................................................................................. 119
8.5.1 Setting up a Longitudinal Balance Test......................................................................119
8.5.2 Running a Longitudinal Balance Test.........................................................................120
8.6..LOAD COIL DETECTION TEST................................................................................................ 124
8.6.1 Setting up a Load Coil Detection Test........................................................................124
8.6.2 Running a Load Coil Detection Test...........................................................................125
8.7 DIGITAL MULTIMETER (DMM) TEST................................................................................. 130
8.7.1 Setting up a DMM Test...............................................................................................130
8.7.2 Running a DMM Test..................................................................................................136
8.8.. 4-WIRE CROSSTALK TEST................................................................................................... 139
8.8.1 Setting up a 4-Wire Crosstalk Test.............................................................................139
8.8.2 Running a 4-Wire Crosstalk Test ...............................................................................141
8.9 ISOLATION RESISTANCE TEST .............................................................................................. 144
8.9.1 Setting up an Isolation Resistance Test.....................................................................144
8.9.2 Running an Isolation Resistance Test........................................................................ 145
8.10 LOOPMAPPER™ .......................................................................................................... 147
8.10.1 Setting up a LoopMapper Test .................................................................................147
8.10.2 LoopMapper Testing.................................................................................................149
8.10.2.1 Testing Cables with the LoopMapper ............................................................................... 152
8.11 AUTOMATIC TESTING .................................................................................................... 156
8.11.1 Auto Test Setup........................................................................................................156
8.11.1.1 ADSL Auto, ADSL2 Auto, ADSL2+ Auto Test Setup .................................................. 156
8.11.1.2 SHDSL Auto Test Setup.............................................................................................. 159
8.11.1.3 VF Auto Test Setup ..................................................................................................... 160
8.11.2 Running an ADSL, ADSL2 or ADSL2+ AUTO Test .................................................163
8.11.3 Running a VF AUTO Test.........................................................................................166
8.11.4 Running an SHDSL AUTO Test ...............................................................................168
SECTION 9 SPECTRAL DETECTIVE ...............................................................................173
9.1 RUNNING A SPECTRAL DETECTIVE TEST.......................................................................... 175
9.2 SPECTRAL DETECTIVE SAMPLES .......................................................................................... 179
SECTION 10 RETURN LOSS ............................................................................................181
10.1 RUNNING A RETURN LOSS TEST ........................................................................................ 182
SECTION 11 SHDSL DATA RATE PREDICTION ............................................................185
11.1..RUNNING A SHDSL TEST .................................................................................................. 187
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