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Fluke 189 [31/96] Using the input terminals
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Getting Acquainted
Using the Input Terminals
2
2-17
Using the Input Terminals
All functions except current use the *and
COM inputs. Current functions use the inputs shown
below:
•
I or K function: Use A and COM inputs from 400
mA to 20 A. Use mA/µA and COM for inputs ≤ 400
mA.
•
= or x function: Use mA/µA and COM for inputs ≤
5000.0 µA.
If a test lead is plugged into the mA/µA or A terminal, but
the rotary switch is not correctly set to one of the current
measuring positions, the Input Alert™ beeper warns you
by making a chirping sound and the primary display shows
"LEAd5". This warning is intended to stop you from
attempting to measure voltage, continuity, resistance,
capacitance, or diode values when the leads are plugged
into a current terminal.
Figure 2-5 shows the input terminals.
A
mA
COM
V
A
tc014f.eps
Figure 2-5. Input Terminals
Содержание
- August 2000 rev 6 02 1
- Model 187 189 1
- Model 187 189 true rms multimeter 1
- True rms multimeter 1
- Users manual 1
- Lifetime limited warranty 2
- Chapter title page 3
- Table of contents 3
- Model 187 189 4
- Contents 5
- Model 187 189 6
- List of tables 7
- Table title page 7
- Figure title page 9
- List of figures 9
- Model 187 189 10
- Before you start 11
- Chapter 1 11
- Contacting fluke 11
- Safety information 11
- Warning 12
- Caution 13
- Warning 13
- Symbols 14
- Chapter 2 15
- Getting acquainted 15
- Introduction 15
- Turning the meter on 15
- Automatic power off 16
- Battery considerations 16
- Automatic backlight off 17
- Low battery indication 17
- Warning 17
- Rotary switch 18
- Pushbuttons 19
- Primary display 24
- Selecting the range 24
- Understanding the display 24
- Bar graph 25
- Secondary display 25
- Warning 27
- Dbm dbv 28
- Fast min max avg 28
- A ma µ a 29
- Hz khz mhz 29
- Nf µ f mf 29
- Using the input terminals 31
- Using display hold 32
- Using autohold 33
- Using min max 33
- Warning 33
- Using fast mn mx 35
- Using hold with min max or fast mn mx 36
- Using relative mode rel 36
- Chapter 3 37
- Introduction 37
- Making measurements 37
- Measuring voltage 37
- Measuring ac voltage 38
- Db measurements in ac volts functions 39
- Both ac and dc voltage measurements 40
- Log 20 40
- Measuring dc voltage 40
- Vr vx db 40
- Measuring resistance 42
- Figure 3 5 resistance measurement 43
- Making measurements measuring resistanc 43
- Testing for continuity 44
- Using conductance for high resistance tests 45
- Figure 3 6 continuity test 46
- For in circuit tests turn circuit power off 46
- Model 187 189 users manual 46
- Off open 46
- On closed 46
- Measuring capacitance 48
- Testing diodes 49
- Figure 3 9 diode test 50
- Forward bias reverse bias 50
- Model 187 189 users manual 50
- Press for diode test 50
- Typical reading 50
- Measuring temperature 51
- Warning 51
- Measuring current 52
- Warning 52
- Input alert feature 53
- Input alert tm feature 53
- Pulse width modulation 53
- Measuring ac current 54
- Figure 3 11 ac current measurement 55
- Making measurements measuring curren 55
- Measuring dc current 56
- Figure 3 12 dc current measurement 57
- Making measurements measuring curren 57
- Measuring frequency 58
- Measuring duty cycle 59
- Figure 3 15 duty cycle measurements 60
- Model 187 189 users manual 60
- Measuring pulse width 61
- Figure 3 17 pulse width measurements 62
- Model 187 189 users manual 62
- Chapter 4 65
- Introduction 65
- Logged readings memory 65
- Saved readings memory 65
- Types of memory 65
- Using memory communications features 65
- Starting logging 66
- Stopping logging 66
- Storing saved readings 66
- Viewing memory data 67
- Warning 67
- Clearing memory 69
- Using communications 187 and 189 69
- Changing the default settings 71
- Chapter 5 71
- Introduction 71
- Selecting setup options 71
- Adjusting the temperature offset 74
- Selecting display resolution 3 1 2 or 4 1 2 digits 76
- Setting the power off timeout 76
- Setting the 24 hour clock 77
- Setting the line main frequency 77
- Returning to factory defaults 78
- Saving setup options 78
- Chapter 6 79
- General maintenance 79
- Introduction 79
- Maintenance 79
- Testing the fuses 79
- Warning 79
- Figure 6 1 testing the current fuses 80
- Ma a ma a 80
- Model 187 189 users manual 80
- Replace f1 if or displayed 80
- Replace f2 if or displayed 80
- Replacing the batteries 81
- Warning 81
- In case of difficulty 83
- Replacing the fuses 83
- User replaceable parts 83
- Warning 83
- Chapter 7 85
- Safety and compliances 85
- Specifications 85
- Physical specifications 86
- Feature summary 87
- Basic specifications 88
- Detailed accuracy specifications 89
- Ω up to 92
- Burden voltage a ma µa 95
- Frequency counter sensitivity 95
- Input characteristics 96
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