Megger L1070, Instruction Manual

 
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