Megger L1070 - Table of Contents

AVTM651070 Rev B Nov 2006
i
Table of Contents
1............................................................................................................................................................. 1
Introduction....................................................................................................................................... 1
Receiving Instructions.................................................................................................................... 1
General Information ...................................................................................................................... 1
2............................................................................................................................................................. 3
Safety ................................................................................................................................................. 3
Precautions .................................................................................................................................... 3
3............................................................................................................................................................. 5
Specifications..................................................................................................................................... 5
Receiver......................................................................................................................................... 5
Transmitter.................................................................................................................................... 6
Battery Charger.............................................................................................................................. 7
4............................................................................................................................................................. 9
Transmitter Operation....................................................................................................................... 9
Controls and Indicators (Fig. 1)..................................................................................................... 9
Ac Resistance Indications............................................................................................................. 10
Transmitter Rechargeable Battery Option.................................................................................... 11
Selecting the Locating Method..................................................................................................... 12
Power Utility Connection............................................................................................................. 13
Telco Circuit Connection............................................................................................................. 14
Flexible Coupler Connection........................................................................................................ 15
Inductive Connection................................................................................................................... 16
Direct Connection........................................................................................................................ 17
Notes on Selecting the Tracing Signal.......................................................................................... 17
Continuously Grounded Circuit................................................................................................... 18
Telephone Direct Shield Connection............................................................................................ 19
Telephone Direct Pair Connection............................................................................................... 19
5........................................................................................................................................................... 21
Receiver Operation.......................................................................................................................... 21
Controls and Indicators................................................................................................................ 21
Locating Cable or Pipe................................................................................................................. 24
Peak Mode Locating..................................................................................................................... 24
Null Mode Locating..................................................................................................................... 25
Absolute Signal Strength.............................................................................................................. 26
Signal Strength Adjusted for Depth (Current Measurement)........................................................ 27
Gain Change Indication............................................................................................................... 28
Passive 50/60 Hz Locating........................................................................................................... 28
Push-Button Digital Depth.......................................................................................................... 28
Depth Measurement 45° Angle Method....................................................................................... 29
Offset Magnetic Field Identification............................................................................................. 30