Before You Start | Fluke 187 specification

Before You Start	1
Safety Information

Table 1-1. Safety Information (cont.)

WWarning

•When using the probes, keep your fingers behind the finger guards on the probes.

•Connect the common test lead before you connect the live test lead. When you disconnect test leads, disconnect the live test lead first.

•Remove test leads from the meter before you open the battery door.

•Do not operate the meter with the battery door or portions of the cover removed or loosened.

•To avoid false readings, which could lead to possible electric shock or personal injury, replace the batteries as soon as the low battery indicator (M) appears.

•Use only type AA batteries, properly installed in the meter case, to power the meter.

•To avoid the potential for fire or electrical shock, do not connect the thermocouples to electrically live circuits.

Caution

To avoid possible damage to the meter or to the equipment under test, follow these guidelines:

•Disconnect circuit power and discharge all high-voltage capacitors before testing resistance, continuity, diodes, or capacitance.

•Use the proper terminals, function, and range for your measurements.

•Before measuring current, check the meter’s fuses and turn power OFF to the circuit before connecting the meter to the circuit.

1-3

Image 12

Fluke 187 user manual Before You Start

Contents

Model 187 Lifetime Limited Warranty Table of Contents Model 187 Making Measurements Iii Maintenance Specifications List of Tables List of Figures Viii Safety Information Before You StartContacting Fluke Safety Information WWarning Before You Start Symbols International Electrical Symbols Getting Acquainted IntroductionTurning the Meter On Battery Considerations Automatic Power Off Low Battery Indication Automatic Backlight Off Rotary Switch Rotary Switch Pushbuttons Pushbuttons Rotary Switch Selections Position Rotary Switch Function Blue Key Function Rotary Switch Positions View MEM Button Pushbuttons Yellow Button Description Function Pushbuttons Button Description Yellow Button Function Selecting the Range Understanding the DisplayPrimary Display Bar Graph Secondary Display Display Features Number Feature Display Features Description Display Features Number 8.8.8 Number Feature Display Features Description Display Features Number 51000 FMS8888 HM8888 8.8 Using the Input Terminals Input Terminals Using Display Hold Display Hold and AutoHOLD Using AutoHOLD Using MIN MAX Model 187 Using Fast MN MX Min Max Avg Using Relative Mode REL Using Hold with MIN MAX or Fast MN MX Making Measurements Measuring Voltage Measuring AC Voltage AC Voltage Measurement DB Measurements in AC Volts Functions DBm Display Measuring DC Voltage Both AC and DC Voltage Measurements AC over DC DC over AC AC and DC Display Measuring Resistance Capacitors before measuring resistance OFF Testing for Continuity Automatically subtract this value Using Conductance for High Resistance Tests For in-circuit tests, turn circuit power off Conductance Measurement Measuring Capacitance Testing Diodes Capacitance Measurement Diode Test Measuring Temperature Shock, do not connect the thermocouples toElectrically live circuits Measuring Current Input Ranges Input Alert Feature Measuring Current Measuring AC Current Following are some tips for measuring current 11. AC Current Measurement Measuring DC Current Total current to circuit Current through one component Measuring Frequency 13. Functions Allowing Frequency Measurement Measuring Duty Cycle 14. Hz Display Measures Positive Pulse Measures Negative Pulse Measuring Pulse Width 16. Duty Cycle Display Start and Stop on Positive Slope Start and Stop on Negative Slope 18. Pulse Width Display Using Memory & Communications Features Types of MemorySaved Readings Memory Logged Readings Memory Storing Saved Readings Starting LoggingStopping Logging Viewing Memory Data To avoid electric shock, disconnect the test View Display MEM Using Communications 187 Clearing Memory Changing the Default Settings Selecting Setup Options Function Specific Setup Selections Factory DefaultPrecondition Option Common Setup Selections Choices Adjusting the Temperature Offset Changing the Default Settings Selecting Display Resolution 3 1/2 or 4 1/2 Digits Setting the Power Off Timeout Setting the 24-Hour Clock Setting the Line Main Frequency Returning to Factory Defaults Saving Setup Options Maintenance Introduction General MaintenanceTesting the Fuses Replace F2 if Replace F1 if Displayed Replacing the Batteries Battery and Fuse Replacement Replacing the Fuses User-Replaceable PartsCase of Difficulty MP8 MP9 Specifications Safety and Compliances Physical Specifications Feature Summary Basic Specifications Detailed Accuracy Specifications Accuracy Function 45-1 kHz20 kHz KHz-100 kHz DC a 500.00 Ω Capacitance Diode Test MIN MAX AVG Frequency Counter Sensitivity Burden Voltage A, mA, µA Input Characteristics