User manual
Extech Instruments
4 TKG250- EN V2.4 11/13
Table of Contents
Table of Contents........................................................................................................... 4
1 Getting Started ............................................................................................................ 6
About the TKG250 Wave............................................................................................. 6
Probe Zero ..................................................................................................................... 7
Keypad Functions ......................................................................................................... 7
Function Keys................................................................................................................ 8
Display Screen .............................................................................................................. 8
Using the Battery Pack .............................................................................................. 10
Monitoring the Battery Charge from the Display Screen................................... 10
Replacing the Battery.............................................................................................. 10
2 Basic Gauge Operations......................................................................................... 11
Power on the Gauge .................................................................................................. 11
Performing a Reset..................................................................................................... 12
Database Reset ....................................................................................................... 12
Parameter Reset...................................................................................................... 13
Database/Parameter Reset ................................................................................... 14
Backlight....................................................................................................................... 14
About Screen............................................................................................................... 15
3 Calibrating the Gauge and Making Measurements ......................................... 16
Velocity Calibration Only............................................................................................ 16
Velocity and Zero Calibration.................................................................................... 17
Zero Calibration Only ................................................................................................. 17
Delay Line Calibration ................................................................................................ 17
Automatic Zero ............................................................................................................ 18
Measurement Mode with a Datalogger ................................................................ 19
4 Adjusting parameters in A-Scan mode: ............................................................. 20
5 Using Setup Mode on the Gauge.......................................................................... 22
Using the Clock ........................................................................................................... 24
Understanding an LOS Reading .............................................................................. 26
Using the Hold Option ................................................................................................ 26










