Hioki 8847 User manual

MEMORY HiCORDER
Instruction Manual
8847
December 2010 Revised edition 4 8847A981-04 10-12H


Contents
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Contents
Usage Index...............................................................................1
Introduction.................................................................................2
Confirming Package Contents....................................................2
Safety Information......................................................................3
Operating Precautions................................................................6
Chapter 1
Overview___________________________________ 9
1.1 Product Overview ................................................................9
1.2 Names and Functions of Parts ..........................................10
1.3 Screen Organization .........................................................12
1.4 Basic Key Operations .......................................................14
1.4.1 Example for Using the HELP Key ...........................................15
Chapter 2
Measurement Preparations___________________ 17
2.1 Install an input module ......................................................18
2.2 Connecting Cords .............................................................20
2.3 Recording Media Preparation ...........................................28
2.3.1 Storage Media (Inserting a CF Card and USB Memory Stick) 28
2.3.2 Formatting Storage Media ......................................................30
2.4 Loading Recording Paper .................................................31
2.5 Supplying Power ...............................................................33
2.5.1 Connecting the Power Cord ...................................................33
2.5.2 Grounding the Instrument’s Functional Earth .........................33
2.5.3 Turning the Power On and Off ................................................34
2.6 Setting the Clocks .............................................................35
2.7 Adjusting the Zero Position (Zero-Adjust) .........................36
Chapter 3
Measurement Procedure_____________________ 37
3.1 Ensuring Measurement Safety ..........................................37
3.2 Measurement Workflow ....................................................38
3.3 Pre-Measurement Inspection ............................................40
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3.4 Setting Measurement Configuration .................................41
3.4.1 Measurement Function .......................................................... 41
3.4.2 Time Axis Range and Sampling Rate ....................................43
3.4.3 Recording Length (number of divisions) ................................46
3.4.4 Screen Layout ........................................................................48
3.5 Input Channel Setting .......................................................49
3.5.1 Channel Setting Workflow ...................................................... 50
3.5.2 Analog Channel ..................................................................... 52
3.5.3 Logic Channel ........................................................................55
3.6 Starting and Stopping Measurement ................................56
3.7 Measurement With Automatic Range Setting
(Auto-Ranging Function) ...................................................58
Chapter 4
X-Y Recorder Function ______________________59
4.1 Measurement Workflow ....................................................60
4.2 Setting Measurement Configuration .................................61
4.3 Starting and Stopping Measurement ................................62
4.4 Waveform Observation .....................................................63
4.4.1 Saving and Printing Waveform ..............................................63
Chapter 5
Saving/Loading Data & Managing Files_________65
5.1 Data capable of Being Saved & Loaded ...........................67
5.2 Saving Data ......................................................................68
5.2.1 Save Types and Workflow ..................................................... 68
5.2.2 Automatically Saving Waveforms .......................................... 69
5.2.3 Saving Data Selectively (SAVE Key) ..................................... 74
5.3 Loading Data ....................................................................77
5.4 Automatically Loading Settings(Auto Setup Function) ......79
5.5 Managing Files .................................................................80
5.5.1 Saving .................................................................................... 81
5.5.2 Checking the Contents of a Folder (Open a Folder) .............. 83
5.5.3 Creating New Folders ............................................................ 83
5.5.4 Deleting Files & Folders ......................................................... 84
5.5.5 Sorting Files ........................................................................... 85
5.5.6 Renaming Files & Folders ......................................................85
5.5.7 Copying a File Into a Specified Folder ................................... 86
5.5.8 Printing the File List ...............................................................87

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Chapter 6
Printing ___________________________________ 89
6.1 Printing Type and Workflow ..............................................90
6.2 Making Auto Print Settings ................................................91
6.3 Manual Printing With PRINT key (Selective Printing) .......93
6.4 Setting the Print Concentration of the Waveform ..............94
6.5 Making Printer Settings .....................................................95
6.6 Miscellaneous Printing Functions .....................................98
6.6.1 Screen Hard Copy ..................................................................98
6.6.2 Report Print (A4 Size Print) ....................................................98
6.6.3 List Print ..................................................................................99
6.6.4 Text Comment Printing ...........................................................99
Chapter 7
Waveform Screen Monitoring and Analysis ____ 101
7.1 Reading Measurement Values (Using the A/B Cursors) .102
7.2 Specifying a Waveform Range (A/B Cursor) ..................105
7.3 Moving the Waveform Display Position ..........................106
7.3.1 About Display Position ..........................................................106
7.3.2 Scrolling With Jog and Shuttle Knobs (Scroll) ......................106
7.3.3 Moving the Position (Jump Function) ...................................107
7.4 Performing Waveform X-Y Synthesis .............................108
7.5 Magnifying and Compressing Waveforms ......................110
7.5.1 Magnifying and Compressing Horizontal Axis (Time Axis) ...110
7.5.2 Zoom Function (Magnifying a Section of the Horizontal Axis
(Time Axis) ...........................................................................111
7.5.3 Magnifying and Compressing Vertical Axis (Voltage Axis) ...112
7.6 Monitoring Input Levels (Level Monitor) ..........................113
7.7 Switching the Waveform Screen Display (Display Menu) 114
7.7.1 Showing Upper/Lower Limit On Waveform Screen ..............114
7.7.2 Showing Comments On Waveform Screen ..........................114
7.7.3 Switching the Waveform Display Width ................................114
7.8 Seeing Block Waveforms ................................................115
Chapter 8
Utility Functions___________________________ 117
8.1 Adding Comments ..........................................................118
8.1.1 Adding a Title Comment .......................................................118
8.1.2 Adding a Channel Comment ................................................119
8.1.3 Alphanumeric Input ...............................................................121
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8.2 Displaying Waveforms During Recording (Roll Mode) ...124
8.3 Displaying New Waveforms Over Past Waveforms
(Overlay) .........................................................................125
8.4 Setting Channels to Use
(Extending the Recording Length) ..................................127
8.5 Converting Input Values (Scaling Function) ...................128
8.5.1 Scaling Setting Examples .................................................... 130
8.6 Variable Function (Setting the Waveform Display Freely) 134
8.7 Fine Adjustment of Input Values (Vernier Function) .......137
8.8 Inverting the Waveform (Invert Function) .......................138
8.9 Copying settings to other channels (calculation No.)
(Copy function) ...............................................................139
8.10 Making Detailed Settings for Input Modules ...................140
8.10.1 Making Settings for the Anti-Aliasing
Filter (A.A.F.) (8968 High Resolution Unit) ..........................141
8.10.2 Probe Attenuation Selection ................................................141
8.10.3 Settings for the 8967 Temp Unit .......................................... 142
8.10.4 Settings for the 8969 Strain Unit ..........................................144
8.10.5 Settings for the 8970 Freq Unit ............................................145
8.10.6 Settings for the 8971 Current Unit .......................................148
8.10.7 Settings for the 8972 DC/RMS Unit .....................................149
Chapter 9
Trigger Settings ___________________________151
9.1 Setting Workflow .............................................................152
9.2 Setting the Trigger Mode ................................................153
9.3 Triggering by Analog Signals ..........................................154
9.3.1 Analog Trigger Settings and Types ...................................... 154
9.4 Triggering by Logic Signals (Logic Trigger) ....................160
9.5 Trigger by Timer or Time Intervals (Timer Trigger) .........162
9.6 Applying an External Trigger (External Trigger) .............165
9.7 Triggering Manually (Manual Trigger) .............................165
9.8 Pre-Trigger Settings ........................................................166
9.8.1 Setting the Trigger Start Point (Pre-Trigger) ........................166
9.8.2 Setting Trigger Acceptance (Trigger Priority) .......................168
9.9 Setting Trigger Timing ....................................................169
9.10 Setting Combining Logic (AND/OR) for
Multiple Trigger Sources .................................................170
9.11 Using trigger settings to search measurement data .......171

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Chapter 10
Numerical Calculation Functions_____________ 173
10.1 Numerical Calculation Workflow .....................................174
10.2 Settings for Numerical Value Calculation ........................176
10.2.1 Displaying Numerical Calculation Results ............................179
10.3 Judging Calculation Results ............................................180
10.3.1 Display of Judgment Results and Signal Output ..................182
10.4 Saving Numerical Calculation Results ............................183
10.5 Printing Numerical Calculation Results ...........................184
10.6 Numerical Calculation Type and Description ..................185
Chapter 11
Waveform Calculation Functions_____________ 189
11.1 Waveform Calculation Workflow .....................................190
11.2 Settings for Waveform Calculation ..................................192
11.2.1 Displaying the waveform calculation results .........................193
11.2.2 Setting constants ..................................................................195
11.2.3 Changing the display method for calculated waveforms ......196
11.3 Waveform Calculation Operators and Results ................198
Chapter 12
Memory Division Function __________________ 201
12.1 Recording Settings ..........................................................203
12.2 Display Settings ..............................................................204
Chapter 13
FFT Function _____________________________ 207
13.1 Overview and Features ...................................................207
13.2 Operation Workflow ........................................................208
13.3 Setting FFT Analysis Conditions .....................................209
13.3.1 Selecting the FFT Function ..................................................209
13.3.2 Selecting the Data Source for Analysis ................................210
13.3.3 Setting the Frequency Range and
Number of Analysis Points ...................................................211
13.3.4 Thinning Out and Calculating Data .......................................213
13.3.5 Setting the Window Function ................................................214
13.3.6 Setting Peak Values of Analysis Results ..............................215
13.3.7 Averaging Waveforms ..........................................................216
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13.3.8 Emphasizing Analysis Results (phase spectra only) ...........219
13.3.9 Analysis Mode Settings ........................................................220
13.3.10Setting the Display Range of the Vertical Axis (Scaling) ..... 224
13.3.11Setting and Changing Analysis Conditions
on the Waveform Screen ..................................................... 225
13.4 Selecting Channels .........................................................226
13.5 Setting Screen Displays ..................................................227
13.5.1 Displaying running spectrums ..............................................229
13.6 Saving Analysis Results .................................................232
13.7 Printing Analysis Results ................................................233
13.8 Analysis with the Waveform Screen ...............................234
13.8.1 Analyzing after Specifying an Analysis Starting Point ..........234
13.9 FFT Analysis Modes .......................................................236
13.9.1 Analysis Modes and Display Examples ...............................236
13.9.2 Analysis Mode Functions ..................................................... 254
Chapter 14
System Environment Settings _______________255
Chapter 15
Connection to a Computer __________________259
15.1 LAN Settings and Connection (Before Using FTP/
Internet Browser/Command Communications) ...............260
15.1.1 Making LAN Settings at the Instrument ............................... 260
15.1.2 Connecting Instrument and PC With LAN Cable .................263
15.2 Performing Remote Operations on the Instrument
(Use an Internet Browser) ...............................................265
15.2.1 Making HTTP Settings on the Instrument ............................265
15.2.2 Connecting to the Instrument With an Internet Browser ......266
15.2.3 Operating the Instrument With an Internet Browser .............267
15.3 Accessing the Files on the Instrument From a Computer
(Using FTP) ....................................................................272
15.3.1 Making FTP Settings at the Instrument ................................ 273
15.3.2 Using FTP to Connect to the Instrument .............................. 274
15.3.3 Using FTP for File Operations ............................................. 275
15.4 Transferring Data to the PC ............................................276
15.5 Wave Viewer (Wv) ..........................................................277
15.6 USB Settings and Connection
(Before Command Communications) .............................278
15.6.1 Making USB Settings at the Instrument ............................... 278
15.6.2 Installing the USB Driver ......................................................278

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15.7 Controlling the Instrument with Command Communications
(LAN/USB) ......................................................................282
15.7.1 Making Settings on the Instrument .......................................283
15.7.2 Communication Command Setting .......................................284
Chapter 16
External Control___________________________ 287
16.1 Connecting External Control Terminals ..........................288
16.2 External I/O .....................................................................289
16.2.1 External Input (START/EXT.IN1) (STOP/EXT.IN2)
(PRINT/EXT.IN3) ..................................................................289
16.2.2 External Output (GO/EXT.OUT1) (NG/EXT.OUT2) ..............290
16.2.3 External Sampling (EXT.SMPL) ...........................................291
16.2.4 Trigger Output (TRIG OUT) ..................................................292
16.2.5 External Trigger terminal (EXT.TRIG) ..................................293
Chapter 17
Specifications_____________________________ 295
17.1 General Specifications ....................................................295
17.2 Measurement Specifications ...........................................298
17.2.1 Memory Function ..................................................................298
17.2.2 Recorder Function ................................................................298
17.2.3 X-Y Recording ......................................................................299
17.2.4 FFT Function ........................................................................299
17.3 Trigger Section ................................................................300
17.4 File Specifications ...........................................................301
17.5 Built-In Functions ............................................................302
17.6 Input Modules Specifications ..........................................304
17.6.1 8966 Analog Unit ..................................................................304
17.6.2 8967 Temp Unit ....................................................................305
17.6.3 8968 High Resolution Unit ....................................................306
17.6.4 8969 Strain Unit ....................................................................307
17.6.5 8970 Freq Unit ......................................................................308
17.6.6 8971 Current Unit .................................................................309
17.6.7 8972 DC/RMS Unit ...............................................................310
17.6.8 8973 Logic Unit .....................................................................310
Chapter 18
Maintenance and Service ___________________ 311
18.1 Trouble Shooting .............................................................312
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18.2 Initializing the Instrument ................................................314
18.2.1 Initializing System Settings (System Reset) ........................314
18.2.2 Initializing Waveform Data ................................................... 314
18.3 Error Messages ..............................................................315
18.4 Self-Test (Self Diagnostics) ............................................318
18.4.1 ROM/RAM Check ................................................................ 318
18.4.2 Printer Check ....................................................................... 319
18.4.3 Display Check ...................................................................... 319
18.4.4 Key Check ........................................................................... 319
18.4.5 System Configuration Check ............................................... 320
18.5 Cleaning ..........................................................................321
18.6 Disposing of the Instrument (Lithium Battery Removal) .323
Appendix________________________________ A 1
Appendix 1 Default Values for Major Settings................................A 1
Appendix 2 Reference....................................................................A 2
Appendix 2.1 Waveform File Sizes ..................................................................A 2
Appendix 2.2 Setting Configuration and Image Data File Sizes .......................A 5
Appendix 2.3 Timebase and Maximum Recordable Time ................................A 6
Appendix 2.4 Maximum record length and number of divisions
(Memory division function) .........................................................A 8
Appendix 2.5 Scaling Method When Using Strain Gauges ..............................A 9
Appendix 3 About Options............................................................A 10
Appendix 3.1 Options .....................................................................................A 10
Appendix 3.2 Model 9783 Carrying Case .......................................................A 12
Appendix 4 If the Model 9784 DC Power Unit is Installed............A 13
Appendix 5 FFT Definitions..........................................................A 15
Index ________________________________Index 1

Usage Index
1
Usage Index
1 Install & Connect
2 Make Instrument Settings
3 Measure
Install the instrument
Setting measurement configuration
Start recording
Analysis
Optionally save and print
5 Finish
Stop recording
4 Analyze, Save and Print
Turn the power off
Viewing Input Signals (p.58)
Catching Changes in Input Signals (p.151)
Applying a Manual Trigger (p.165)
Adding Comments (p.118)
Freely Setting the Waveform Display (p.49)
Converting Input Values (p.128)
Copying Settings to Other Channels (p.139)
Suppressing Noise (Low-pass filter) (p.54)
Composing X-Y Waveforms (p.108)
Locking the Keys (KEY LOCK) (p.11)
Initializing a CF card (p.30)
Scaling During Measurement Using a Current
Clamp (p.130)
Basic Workflow (p.17)
(p.37)
(p.56)
(p.34)
(p.89), (p.101)
Connect the cords
Install the input modules
Install the recording paper
Turn power on
Select the function
Select the input channels

Introduction
2
Thank you for purchasing the HIOKI "Model 8847 Memory HiCorder". To obtain maximum performance
from the instrument, please read this manual carefully, and keep it handy for future reference.
The following documents are provided with this instrument. Refer to them as
appropriate for your application.
Registered
trademarks • Windows is a registered trademark of Microsoft Corporation in the United
States and/or other countries.
• CompactFlash is a registered trademark of Sandisk Corporation (USA).
When you receive the instrument, inspect it carefully to ensure that no damage occurred during
shipping. In particular, check the accessories, panel switches, and connectors. If damage is evident,
or if it fails to operate according to the specifications, contact your dealer or Hioki representative.
Introduction
Document Description
1Measurement
Guide
Read first.
Offers an introduction to the Memory HiCorder's basic mea-
suring method for first time users.
2Instruction Manual
(This document) Contains explanation and instructions regarding the instru-
ment's operating method and functions.
Confirming Package Contents
Confirm that these contents are provided. (One each)
Instruction Manual
Measurement Guide
Application CD (p.277)
The latest version can be downloaded
from our web site.
8847 Memory HiCorder
Accessories
Power Cord
Input Cable Labels
USB Cable
9231 Recording Paper
Paper Roll Axle
Ferrite clamp-on choke
(for LAN/USB Cable)
Other options specified when
ordered
See: Options List (p. A10)
If the 8967 TEMP Unit is installed in the 8847, two ferrite clamp-on chokes
(small) will be supplied per unit.

Safety Information
3
This manual contains information and warnings essential for safe operation of the instrument and
for maintaining it in safe operating condition. Before using it, be sure to carefully read the following
safety precautions.
The following symbols in this manual indicate the relative importance of cautions
and warnings.
Safety Information
This instrument is designed to comply with IEC 61010 Safety Standards, and
has been thoroughly tested for safety prior to shipment. However, mishandling
during use could result in injury or death, as well as damage to the instrument.
However, using the instrument in a way not described in this manual may negate
the provided safety features.
Be certain that you understand the instructions and precautions in the manual
before use. We disclaim any responsibility for accidents or injuries not resulting
directly from instrument defects.
Safety Symbols
In the manual, the symbol indicates particularly important infor-
mation that the user should read before using the instrument.
The symbol printed on the instrument indicates that the user
should refer to a corresponding topic in the manual (marked with the
symbol) before using the relevant function.
Indicates DC (Direct Current).
Indicates AC (Alternating Current).
Indicates a grounding terminal.
Indicates the ON side of the power switch.
Indicates the OFF side of the power switch.
Indicates that incorrect operation presents an extreme hazard that
could result in serious injury or death to the user.
Indicates that incorrect operation presents a significant hazard that
could result in serious injury or death to the user.
Indicates thatincorrect operation presents a possibility of injury to the
user or damage to the instrument.
Indicates advisory items related to performance or correct operation
of the instrument.

Safety Information
4
Symbols in This Manual
Accuracy We define measurement tolerances in terms of f.s. (full scale) values, with the
following meanings:
f.s. (maximum display value or scale length)
The maximum displayable value or scale length. In this instrument, the maxi-
mum displayable value is the range (V/div) times the number of divisions (20) on
the vertical axis.
Example: For the 1 V/div range, f.s. = 20 V
Symbols for Various Standards
WEEE marking:
This symbol indicates that the electrical and electronic appliance is
put on the EU market after August 13, 2005, and producers of the
Member States are required to display it on the appliance under Arti-
cle 11.2 of Directive 2002/96/EC (WEEE).
This symbol indicates that the product conforms to safety regulations
set out by the EC Directive.
Notation
Indicates the prohibited action.
(p. ) Indicates the location of reference information.
Indicates quick references for operation and remedies for troubleshoot-
ing.
*Indicates that descriptive information is provided below.
[ ] Menus, commands, dialogs, buttons in a dialog, and other names on the
screen and the keys are indicated in brackets.
CURSOR
(Bold
characters) Bold characters within the text indicate operating key labels.
Unless otherwise specified, "Windows" represents Windows 2000, Win-
dows XP, or Windows Vista.
"IE" represents Internet Explorer.
Indicates Memory function support.
Indicates Recorder function support.
Indicates X-Y Recorder function support.
Indicates FFT Recorder function support.

Safety Information
5
This instrument complies with CAT II safety requirements. This instrument’s
input modules comply with CAT I or CAT II safety requirements. To ensure safe
operation of measurement instruments, IEC 60664 establishes safety standards
for various electrical environments, categorized as CAT I to CAT IV, and called
overvoltage categories. These are defined as follows.
CAT I Secondary electrical
circuits connected to
an AC electrical out-
let through a trans-
former or similar
device.
CAT II Primary electrical cir-
cuits in equipment
connected to an AC
electrical outlet by a power cord (portable tools, household appliances,
etc.) CAT II covers directly measuring electrical outlet receptacles.
CAT III Primary electrical circuits of heavy equipment (fixed installations) con-
nected directly to the distribution panel, and feeders from the distribution
panel to outlets.
CAT IV The circuit from the service drop to the service entrance, and to the
power meter and primary overcurrent protection device (distribution
panel).
Higher-numbered categories correspond to electrical environments with greater
momentary energy. So a measurement device designed for CAT III environ-
ments can endure greater momentary energy than a device designed for CAT II.
Using a measurement instrument in an environment designated with a higher-
numbered category than that for which the instrument is rated could result in a
severe accident, and must be carefully avoided.
Overvoltage Categories (CAT)
The applicable measurement category is determined by the input module being
used. Refer to "17.6 Input Modules Specifications" (p.304).

Operating Precautions
6
Follow these precautions to ensure safe operation and to obtain the full benefits of the various functions.
Before using the instrument the first time, verify that it operates normally to
ensure that the no damage occurred during storage or shipping. If you find any
damage, contact your dealer or Hioki representative.
Operating temperature and humidity: -10 to 40°C, 20 to 80%RH (non-condensating)
When printing: 0 to 40°C, 20 to 80%RH (non-condensating)
When using a hard disk: 5 to 40°C, 20 to 80%RH (non-condensating)
Temperature and humidity range for guaranteed accuracy: 23 ± 5°C, 20 to
80%RH (non-condensating)
Installing
To prevent overheating, be sure to leave the specified clearances around the unit.
• The instrument should be operated only with the bottom or rear side downwards.
• Vents must not be obstructed.
• Do not install the instrument at a slanted angle.
Operating Precautions
Before Use
Before using the instrument, make sure that the insulation on the connection
cords and connection cords is undamaged and that no bare conductors are
improperly exposed. Using the instrument in such conditions could cause an
electric shock, so contact your dealer or Hioki representative for replacements.
Instrument Installation
Avoid the following locations that could cause an accident or damage to the
instrument.
Exposed to direct
sunlight
Exposed to high tem-
perature
In the presence of cor-
rosive or explosive
gases
Exposed to liquids
Exposed to high
humidity or conden-
sation
Exposed to strong
electromagnetic fields
Near electromagnetic
radiators
Exposed to high lev-
els of particulate dust Subject to vibration
At least 5 cm
All at least 5 cm

Operating Precautions
7
Handling the Instrument
To avoid electric shock, do not remove the instrument's case. The internal com-
ponents of the instrument carry high voltages and may become very hot during
operation.
Never modify the instrument. Only Hioki service engineers should disassemble
or repair the instrument. Failure to observe these precautions may result in fire,
electric shock, or injury.
• To avoid damage to the instrument, protect it from physical shock when trans-
porting and handling. Be especially careful to avoid physical shock from drop-
ping.
• Before transporting the instrument, disconnect all cables and remove any CF
card, USB memory stick and recording paper.
Handling the Probes
• Avoid stepping on or pinching cords, which could damage the probe insulation.
• To avoid breaking the cords, do not bend or pull them.
Use only the specified connection cords. Using a non-specified cable may result
in incorrect measurements due to poor connection or other reasons.
Handling the CD
• Always hold the disc by the edges, so as not to make fingerprints on the disc or
scratch the printing.
• Do not wet the disc with volatile alcohol or water, as there is a possibility of the
label printing disappearing.
• To write on the disc label surface, use a spirit-based felt pen. Do not use a ball-
point pen or hard-tipped pen, because there is a danger of scratching the sur-
face and corrupting the data. Do not use adhesive labels.
• Do not expose the disc directly to the sun's rays, or keep it in conditions of high
temperature or humidity, as there is a danger of warping, with consequent loss
of data.
• To remove dirt, dust, or fingerprints from the disc, wipe with a dry cloth, or use
a CD cleaner. Always wipe radially from the inside to the outside, and do no
wipe with circular movements. Never use abrasives or solvent cleaners.
• Hioki shall not be held liable for any problems with a PC system that arises
from the use of this CD, or for any problem related to the purchase of a Hioki
product.

Operating Precautions
8

1.1 Product Overview
9
1
Chapter 1 Overview
The Memory HiCorder 8847 is easy to operate and allows quick and efficient measurement and
analysis.
Major applications include equipment diagnosis, preventive maintenance, and troubleshooting. The
product offers the following features.
Overview Chapter 1
1.1 Product Overview
Sturdy finish and convenient
carrying handle
Easily take the unit anywhere.
Easy loading of recording paper
High-speed printing
One-touch insertion allows quick and trouble-free
operation.
Immediately ready for mea-
surement after power-on *
Logic modules allow
measurement in 64 channels
Ideal for multi-point measurements.
High-speed sampling: 20 Ms/s
Enables responsive evaluation and analysis.
* For best measurement precision, a warm-up
period of about 30 minutes after power-on is
recommended, to allow the internal tempera-
ture of the input modules to stabilize.
Then perform zero-adjust and start the mea-
surement.

1.2 Names and Functions of Parts
10
1.2 Names and Functions of Parts
Front Panel
CF Card slot
Handle
Left Side
Printer
Display
(LCD)
Right Side
Various Input Modules
(p.18), (p.20)
(For details, see the documen-
tation of the respective input
module.)
Power Inlet
Connect the supplied power
cord here.(p.33)
GND Terminal (Functional Earth)
Connect to Earth ground.(p.33)
USB Connector (Type B)
Connect a USB cable here.
(p.278)
USB Connector (Type A)
Connect a USB memory stick
here. (p.28)
100BASE-TX Connector
Connect a LAN cable here.
(p.259)
Standard LOGIC terminals
Input connectors for proprietary
logic probes. (p.20)
External control terminals
An external sampling signal can be
connected here. (p.287)
Allows control of the instrument.
POWER Switch
Turns the instrument on and off.
: Power On
: Power Off (p.34)
Operating Keys
(p.11)
Other manuals for 8847
1
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