Fluke 189 [5/96] Contents

Contents (continued)

iii

Measuring AC Current.............................................................................................. 3-18

Measuring DC Current.............................................................................................. 3-20

Measuring Frequency.................................................................................................... 3-22

Measuring Duty Cycle.................................................................................................... 3-23

Measuring Pulse Width.................................................................................................. 3-25

4 Using Memory & Communications Features ............................................................ 4-1

Introduction....................................................................................................................4-1

Types of Memory........................................................................................................... 4-1

Saved Readings Memory.......................................................................................... 4-1

Logged Readings Memory........................................................................................ 4-1

Storing Saved Readings................................................................................................ 4-2

Starting Logging ............................................................................................................ 4-2

Stopping Logging........................................................................................................... 4-2

Viewing Memory Data.................................................................................................... 4-3

Clearing Memory ........................................................................................................... 4-5

Using Communications (187 and 189) .......................................................................... 4-5

5 Changing the Default Settings ................................................................................... 5-1

Introduction....................................................................................................................5-1

Selecting Setup Options................................................................................................ 5-1

Adjusting the Temperature Offset.................................................................................. 5-4

Selecting Display Resolution (3 1/2 or 4 1/2 Digits)...................................................... 5-6

Setting the Power Off Timeout....................................................................................... 5-6

Setting the 24-Hour Clock.............................................................................................. 5-7

Setting the Line (Main) Frequency................................................................................. 5-7

Returning to Factory Defaults........................................................................................ 5-8

Saving Setup Options.................................................................................................... 5-8