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Fluke FLK-8845A/SU [74/93] Measuring capacitance 8846a only
![Fluke FLK-8845A/SU [74/93] Measuring capacitance 8846a only](/views2/1665620/page74/bg4a.png)
8845A/8846A
Users Manual
4-12
cycle time is longer than it is when using the 20 Hz
filter.
20HZ Provides higher measurement accuracy on ac signals
between 20 Hz and 200 Hz. However, the measurement
cycle time is longer than it is when using the 200 Hz
filter.
200 HZ Provides accurate measurements on ac signals 200 Hz
and above.
2ND MEAS Cycles the secondary display through the measurement functions
listed below, and then off. When a second measurement function is
selected, the 2ND MEAS soft key label is highlighted.
IDC - Displays the dc current the ac signal is riding on.
Frequency - Displays the frequency of the ac signal on the Meter’s
Input HI and LO connectors.
Measuring Capacitance (8846A only)
The Fluke 8846A is capable of measuring capacitance from 1 pF to 100 mF (0.1 F).
To make a capacitance measurement:
1. Press C. An example of the capacitance display is shown below.
0.000
nF
F1 F2 F3 F4 F5
caw10f.eps
2. Connect the Meter’s test leads as shown in Figure 4-6.
2
INPUT SENSE
HI
LO
FRONT
REAR
10 A
1V
100
mA
4
W
HI
LO
2W/4W
V
300V
FUSED
1000V CAT I
600V CAT II
caw027.eps
Figure 4-6. Measuring Capacitance
Содержание
- A 8846a 1
- A 8846a digital multimeter users manual 1
- Digital multimeter 1
- Users manual 1
- Limited warranty and limitation of liabilit 2
- Table of contents 3
- A 8846a 6
- List of tables 7
- A 8846a 8
- List of figures 9
- A 8846a 10
- Chapter 1 11
- Introduction and specifications 11
- Introduction 13
- Manual set 13
- About this manual 14
- General safety summary 14
- Safety information 14
- Xw warning 14
- Xw warning 15
- Instrument security procedures 16
- Symbols 16
- Volatile memory 16
- Accessories 17
- Media memory 8846a only 17
- Non volatile memory 17
- A 8846a 18
- Dimensions 19
- Display 19
- Environment 19
- General specifications 19
- Introduction and specifications general specification 19
- Safety 19
- Triggering 19
- A 8846a 20
- Dc voltage specifications 20
- Electrical 20
- Electrical specifications 20
- Input characteristics 20
- Math functions 20
- Memory 20
- Remote interfaces 20
- Users manual 20
- Warranty 20
- A accuracy 21
- Ac voltage specifications 21
- Additional errors 21
- Introduction and specifications electrical specification 21
- A 8846a 22
- A accuracy 22
- Input characteristics 22
- Users manual 22
- A accuracy 23
- Additional low frequency errors 23
- Introduction and specifications electrical specification 23
- Resistance 23
- A 8846a 24
- A accuracy 24
- Additional ohms errors 24
- Input characteristics 24
- Users manual 24
- Accuracy 8845a 25
- Accuracy 8846a 25
- Additional current errors 25
- Dc current 25
- Input characteristics 25
- Introduction and specifications electrical specification 25
- A 8846a 26
- A accuracy 26
- Ac current 26
- Input characteristics 26
- Users manual 26
- A accuracy 27
- A accuracy cont 27
- Additional low frequency errors 27
- Introduction and specifications electrical specification 27
- A 8846a 28
- A accuracy 28
- Additional low frequency errors 28
- Frequency 28
- Gate time vs resolution 28
- Users manual 28
- Additional temperature errors 29
- Capacitance 8846a only 29
- Continuity 29
- Introduction and specifications electrical specification 29
- Temperature 8846a only 29
- A 8846a 30
- Diode test 30
- Measurement rates 30
- Users manual 30
- Chapter 2 31
- Preparing the meter for operation 31
- Contacting fluke 33
- Introduction 33
- Power considerations 33
- Storing and shipping the meter 33
- Unpacking and inspecting the meter 33
- Line power fuse 34
- Replacing the fuses 34
- Selecting the line voltage 34
- Xw warning 34
- Current input fuses 35
- W warning 35
- Connecting to line power 37
- First verify that the line voltage selection is set to the correct position and then that the correct fuse for that line voltage is installed connect the meter to a properly grounded three prong outlet 37
- To avoid shock hazard connect the factory supplied three conductor line power cord to a properly grounded power outlet do not use a two conductor adapter or extension cord this will break the protective ground connection if a two conductor power cord must be used a protective grounding wire must be connected between the ground terminal and earth ground before connecting the power cord or operating the instrument 37
- Xw warning 37
- Adjusting the bail 38
- Installing the meter in an equipment rack 38
- Turning power on 38
- Xw warning 38
- Cleaning the meter 39
- Xw warning 39
- Chapter 3 41
- Front panel operation 41
- Controls and indicators 43
- Front panel feature descriptions 43
- Introduction 43
- Table 3 1 shows the meter s front panel controls and connectors 43
- The meter can be controlled either by sending commands through one of its communication interfaces or by manual manipulation of its front panel controls this chapter explains the function and use of the controls and indicators located on the front and rear panels of the meter operating the meter through its computer interfaces is covered in the programmers manual 43
- A 8846a 44
- Display panel 44
- Displays measurements as a value with measurement units and measurement statistics in both numerical and graphical format trendplot and histogram 44
- Displays soft labels for soft keys f1 through f5 44
- Identifies the current mode of operation local man or remote rem 44
- The display panel described in table 3 2 performs the following three functions 44
- 6 7 8 9 46
- A 8846a 46
- Rear panel connectors 46
- Table 3 3 indicates the connections on the rear panel and describes their use 46
- Adjusting the meter s range 47
- Configuring the meter for a measurement 47
- Navigating the front panel menu 47
- Setting the display resolution 47
- Setting continuity resistance threshold and diode test parameters 48
- Setting the ac signal filter 48
- Setting the continuity threshold resistance 48
- Enabling automatic input impedance 49
- Setting the default temperature scale 8846a only 49
- Setting the diode test voltage and current 49
- Using the analyze functions 49
- Collecting statistics on measurements 50
- Reading the min max std dev and avg values 50
- Starting the measurement collection 50
- Stopping measurement collection 50
- Testing using limits 51
- Setting an offset value 52
- Using mx b 52
- Using trendplot 53
- Using the histogram function 54
- Auto triggering 55
- Choosing a trigger source 55
- Controlling trigger functions 55
- External triggering 55
- Setting the number of samples 56
- Setting the trigger delay 56
- Accessing and controlling memory 57
- Storing readings in memory 57
- Understanding the measurement complete signal 57
- Recalling readings from memory 58
- Storing meter configuration information 58
- Recalling a meter configuration 59
- Managing memory 60
- Adjusting display brightness 61
- Controlling system related operations 61
- Identifying meter errors 61
- Querying the firmware for revision level 61
- Setting the meter s date and time 61
- Checking the meter s calibration date 62
- Configuring the remote interface 62
- Resetting the meter s default settings 62
- Chapter 4 63
- Making measurements 63
- Activating the secondary display 65
- Introduction 65
- Selecting function modifiers 65
- Xw warning 65
- 0 0169 66
- Measuring dc voltage 66
- Measuring voltage 66
- Measuring ac voltage 67
- Measuring frequency and period 68
- Making a two wire resistance measurement 69
- Measuring resistance 69
- Making a four wire resistance measurement 70
- Measuring current 71
- W caution 71
- Measuring dc current 72
- Measuring ac current 73
- Measuring capacitance 8846a only 74
- Measuring rtd temperature 8846a only 75
- Checking diodes 76
- Testing continuity 76
- Making a triggered measurement 77
- Setting a trigger delay 78
- Setting number of samples per trigger 78
- Setting the trigger mode 78
- Connecting an external trigger 79
- Monitoring the measurement complete signal 79
- Appendices 81
- A 2x4 test leads 83
- Appendix a 83
- Introduction 83
- X4 test leads 83
- Xw warning 83
- Appendix b 85
- B errors 85
- Errors 85
- Introduction 85
- Appendix c 89
- C rs 232 port connections 89
- Introduction 89
- Rs 232 port connections 89
- Table c 1 lists the pins and related signals available through the rs 232 port 89
- The meter s rs 232 control lines can be rewired to an alternate pairing instead of the rts cts control pair this alteration should be done by a trained technician at fluke service center opening the cover of the meter to make this alteration may void the meter s warranty 89
- A 8846a 92
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