Hioki 8804 Instruction Manual

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INSTRUCTION MANUAL
8804
MEMORY HiCORDER
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Contents
Introduction i Inspection i Safety ii Notes on Use v Chapter Summary viii Names and Functions of Parts x
Chapter 1 Chapter Overview 1
1.1 Product Overview 1
1.2 System Operation 4
Chapter 2 Specifications 7
2.1 Main Units Specifications 7
2.1.1 General specifications 7
2.1.2 Trigger Unit 10
2.1.3 Memory Recorder Function 11
2.1.4 Recorder Function 12
2.1.5 RMS recorder function 13
2.1.6 X-Y CONT Recorder Function 14
2.1.7 Auxiliary 15
2.1.8 A List of Optional Accessories 16
1 2 3 4 5 6 7 8
9 10 11
Chapter 3 Preparation and Setup 19
3.1 Setup 19
3.2 Loading Recording Paper 22
3.3 Care of Re cording Paper 25
3.3.1 Storing data 25
3.4 During Measurement 26
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Chapter 4 Screen Displays and Settings 27
4.1 Screen Displays 27
4.2 Types of Screen Display 27
4.3 Screen Configuration 29
4.4 Changing the waveform, status, trigger, and system screens
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4.5 Function Changing 30
Chapter 5 Basic Operation 31
5.1 Setting Method 31
5.1.1 Setting Procedure 31
5.1.2 Example Settings 32
5.2 Basic Setting Items of Each Function 34
5.3 Starting and Stopping Measurement 46
5.3.1 Measurement Starting and Stopping in the Three Trigger Modes
5.3.2 Stopping Measurement (in the Memory Recorder Function)
5.4 Printer Operations 48
5.4.1 Types of Recording and Functions 48
5.4.2 Setting the Style for Recording on the Printer (Types of print) 48
5.4.3 Recording on the Printer 50
5.4.4 Head Up and Paper End 53
5.4.5 Head Temperature Protection Function 53
5.5 Zero Adjustment 54
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Chapter 6 Memory Recorder Function Mode 55
6.1 What is the Memory Recorder Function? 55
6.1.1 Introduction 55
6.1.2 Finding Reference Material in This Manual 56
6.2 Display Screens 59
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6.3 Basic Operational Procedures 64
6.3.1 Operational Flow 64
6.3.2 Example of Operation 66
6.4 Auto-Range Function 69
6.5 Roll Mode Function 71
6.6 Using X-Y Waveform Plots 72
6.7 Numerical Calculation 74
6.8 Memory Recorder Function Possible Recording Time
Chapter 7 Recorder Function Mode 81
7.1 What is the Recorder Function? 81
7.1.1 Introduction 81
7.1.2 Finding Reference Material in This Manual 82
7.2 Display Screens 84
7.3 Basic Operational Procedures 89
7.3.1 Operational Flow 89
7.3.2 Example of Operation 91
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1 2 3 4 5 6 7 8
Chapter 8 RMS Recorder Function Mode 93
8.1 What is the RMS Recorder Function? 93
8.1.1 Introduction 93
8.1.2 Finding Reference Material in This Manual 94
8.2 Display Screens 97
8.3 Basic Operational Procedures 101
8.3.1 Operational Flow 101
8.3.2 Example of Operation 103
Chapter 9 X-Y CONT Recorder Function 107
9.1 What is the X-Y CONT Recorder Function? 107
9.1.1 Introduction 107
9.1.2 Finding Reference Material in This Manual 108
9.2 Display Screens 110
9.3 Basic Operational Procedures 113
9.3.1 Operational Flow
9.3.2 Example of Operation
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Chapter 10 Applications 117
10.1 Using the A and B Cursors (All Functions) 117
10.1.1 The types of the cursors 117
10.2 Waveform Scrolling 121
Chapter 11 Trigger Function 123
11.1 Overview 123
11.2 Internal Trigger 125
11.3 Setting the Trigger Types 126
11.3.1 Level Trigger 127
11.3.2 Window-out Trigger 129
11.3.3 Logic Trigger 131
11.3.4 Voltage Dip Trigger (Memory Recorder Function) 135
11.3.5 RMS Level Trigger (RMS recorder function) 138
11.4 External Trigger 140
11.5 Internal and External Trigger LogicalOperator 142
11.6 Trigger Modes (Memory, Recorder, RMS Recorder Function)
11.7 Pre-Trigger( Memory,RmsRecorderFunction) 145
11.8 Trigger Timing 150
11.9 Timer Trigger 151
11.10 Level Meter Function 153
11.11 Trigger Output Terminal 154
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Chapter 12 System Screen 155
12.1 What is the System Screen? 155
12.2 Input Level Monitor Function (Input Level Monitor Screen)
12.3 Settings on the System Screen (Page 1) 158
12.3.1 Setting the Grid
12.3.2 Time Value Display
12.3.3 Listing and Gauge Functions
12.3.4 Intermittent Printing
12.3.5 Starting Status Backup Function 163
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12.3.6 Printing Intensity Adjustment 163
12.3.7 Screen Contrast Adjustment 164
12.3.8 Language Display Setting 164
12.3.9 Appending Comments 165
12.3.10 Setting the Clock 166
12.4 Settings on the System Screen (Page 2) 167
12.4.1 Scaling Function 167
12.4.2 Saving, Reading, and Deleting the Setting Condition 171
12.4.3 Self Check 174
Chapter 13 Input Units 179
13.1 Analog Inputs 179
13.2 Specifications 180
13.3 Safety Requirements 181
13.4 Input Cables 183
13.5 Measurement Errors Caused by Signal Source Internal Resistance
13.6 Logic Inputs 185
13.6.1 Logic Input Unit 185
13.6.2 Logic Probe 186
Chapter 14 Maintenance and Service 189
14.1 Changing the Battery 189
14.2 9420 BATTERY PACK 191
14.3 Recharging the Battery 193
14.4 Removing the Battery Before Ultimate Disposal
14.5 Cleaning the Printer Head 196
14.6 Troubleshooting 198
14.7 Service 200
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Appendices APPENDIX 1
Apendix.1 Background APPENDIX 1 Apendix.2 Error Messages APPENDIX 5 Apendix.3 Glossary APPENDIX 6 Apendix.4 Example of Waveforms for Each
Function
APPENDIX 7
Index INDEX 1
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I
I
ntroduction
Thank you for purchasing this HIOKI "8804 MEMORY HiCORDER." To get the maximum performance from the unit, please read this manual first, and keep this at hand.
nspection
When the unit is delivered, check and make sure that it has not been damaged in transit. In particular, check the accessories, panel switches, and connectors. If the unit is damaged, or fails to operate according to the specifications, contact your dealer or HIOKI representative.
Accessories
i
9574 INPUT CORD 2 9232 RECORDING PAPER (roll paper) 1 Roll paper attachments 2 Instruction Manual 1
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Inspection
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afety
WARNIN
This equipment is designed to according to IEC 348 Safety Standards, and has been tested for safety prior to shipment. During high voltage measurement, incorrect measurement procedures could result in injury or death, as well as damage to the equipment. Please read this manual carefully and be sure that you understand its contents before using the equipment. The manufacturer disclaims all responsibility for any accident or injury except that resulting due to defect in its product.
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Safety
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Safety symbols
This Instruction Manual provides information and warnings essential for operating this equipment in a safe manner and for maintaining it in safe operating condition. Before using this equipment, be sure to carefully read the following safety notes.
This symbol is affixed to locations on the equipment where the operator should consult corresponding topics in this manual (which are also marked with the symbol) before using relevant functions of the equipment. In the manual, this mark indicates explanations which it is particularly important that the user read before using the equipment.
Indicates a grounding terminal.
Indicates both DC (Direct Current) and AC (Alternating Current).
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Indicates DC (Direct Current).
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Safety
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The following symbols are used in this Instruction Manual to indicate the relative importance of cautions and warnings. 
DANGE
WARNIN
CAUTIO
NOTE
Indicates that incorrect operation presents extreme danger of accident resulting in death or serious injury to the user.
Indicates that incorrect operation presents significant danger of accident resulting in death or serious injury to the user.
Indicates that incorrect operation presents possibility of injury to the user or damage to the equipment.
Denotes items of advice related to performance of the equipment or to its correct operation.
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Safety
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otes on Use
In order to ensure safe operation and to obtain maximum performance from the unit, observe the cautions listed below.
DANGE
To prevent the danger of electric shock or damage to the unit, never input more than 450 V(either AC or DC) between a pair of analog input units or between an analog input unit and the main unit. To prevent damage to the 8804, never exceed the limits in the following table for the various input connections.
Input/output terminalMaximum input voltag
Analog input 500 V DCAC peak
EXT TRIG -5 V to 10 V
-20 V to +30 V
TRIG OUT
When using an AC adapter, always use the specified 9418-10 AC ADAPTER(PSA-30U-120, PHIHONG). The rated supply voltage is 100 to 240 VAC. (Voltage fluctuations of 10% from the rated supply voltage are taken into account.) The rated supply frequency is 50/60 Hz. Do not use a power supply that falls outside of this range.
500 mA max
200 mW max
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Notes on Use
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WARNIN
CAUTIO
When using the batteries, use LR6 alkaline batteries or 9420 BATTERY PACK. In this case, do not use new batteries with old ones. Also, do not mix batteries of different types. We take no responsibility for an accident using the batteries and battery packs which are not specified. When using the 9420, always use 3 pairs of cells together. Do not use different types of batteries.
The logic inputs are not floating. Although two sets of
logic probes can be connected, they all have a common ground with the main unit.
To avoid damage to the unit, do not input a
voltage/current exceeding the rated maximum to the external input terminals.
The optimal operating temperature and humidity range
of the unit is 5to 40and 35% to 80% RH or less. Do not use the unit in direct sunlight, dusty conditions, or in the presence of corrosive gases.
NOTE
(1) Before Powering On
Check that the correct 9418-10PSA-30U-120,
PHIHONG), 9420, or LR6 alkaline batteries are fitted.
Be sure to connect the protective ground terminal to
ground. Connect the protective ground terminal to a grounding conductor before making any other connections.
When using an AC adapter and if properly grounded
three-pin outlet is available, then using the three-core power cord provides automatic grounding.
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Notes on Use
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(2) Using the Printer
Using the printer for low-speed printing (Recorder
function) in a high temperature or high humidity environment should be avoided at all costs. This can seriously reduce the printer life.
If the recording paper is mistakenly inserted back to
front, waveform recording is impossible.
(3) Recording Paper
This unit uses a thermal printer. The recording paper
supplied has characteristics finely tuned for use with the printer.
Using recording paper of a different specification may not
only result in impaired printing quality, but even prevent the printer from operating. Always use the 9232 RECORDING PAPER.
(4) Storage
If the unit will not be used for a substantial period, to protect the printer head and prevent deformation of the rubber rollers, move the head up/down lever to the head up position. If the unit is left in the state in which the head is applying pressure to the platen roller, the roller may be deformed, and the printing may become uneven.
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(5) Shipment
If reshipping the unit, ensure that the recording head is in the up position and preferably use the original packing.
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Notes on Use
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hapter Summary
This manual consists of the following chapters. "Introduction", "Safety", "Notes on Use" describe
precautions on use, overview, and features of this unit. Be sure to read them all. Next, check theNames and Functions of Parts" and the unit to confirm your understanding of the function.
Chapter 1 Overview
Overview of the unit and its features.
Chapter 2 Specifications
Specifications of the main unit, and measurement ranges.
Chapter 3 Preparation and Setup
Describe preparation and setup for using the unit, loading recording paper, and important points to note during measurement.
Chapter 4 Screen Displays and Settings
Describe screen displays and principal basic key operations.
Chapter 5 Basic Operation
Describe the method of operation (settings, start and stop measuring, and printer operation) which is common with all function.
Chapter 6 Memory Recorder Function Mode
Explain Memory recorder function mode, including examples of operation.
Chapter 7 Recorder Function Mode
Explain Recorder function mode, including examples of operation.
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Chapter Summary
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Chapter 8 RMS Recorder Function Mode
Explain RMS recorder function mode, including examples of operation.
Chapter 9 XY CONT Recorder Function Mode
Explain XY CONT recorder function mode, including examples of operation.
Chapter 10 Applications
Describe the A and B cursors and scrolling operations.
Chapter 11 Trigger Functions
Describe the settings of trigger functions, and how to use them.
Chapter 12 System Screen
Describe the system screen, and details of special function setting, the scaling function, self check function and other functions.
Chapter 13 Input Units
Describe the input units, including specifications and important notes on operation.
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Chapter 14 Maintenance and Service
Describe maintenance, replacement of consumables, and notes on ultimate disposal.
Appendices
Describe background, error messages, glossary, and examples of waveforms for each function.
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Chapter Summary
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ames and Functions of Parts
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FEED key
While pressing this key, the recording paper is fed forward.
PRINT key
Press this key to print out the waveform stored in memory.
COPY key
Press this key to print a copy of the current screen display.
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Names and Functions of Parts
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Front View
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45678
910
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START key
Press this key to start measurement and analysis.
During measurement, the LED is illuminated green.
While charging the 9420 BATTERY PACK, the LED is
illuminated red.
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STOP key
Press this key to stop operation of the 8804.
BACK LIGHT key
Press this key to turn the LCD back light on and off.When using the batteries and if any key is not pressed for
about 20 seconds with the backlight on, the backlight automatically goes off.
+, − keys
Press this key to select the measurement condition.Press the SHIFT key, the waveform scrolling is possible.
MENU/WAVE key
Press this key to change the screen display.
CURSOR keys
These four keys move the flashing portion on the screen
display (the flashing cursor) up, down, left, and right.
Press the SHIFT key to move the A and B cursors.
SHIFT key
Change the function of cursor keys and , keys on the
waveform screen.
Enable or disable to display the position of the waveform
for the whole recording length.
1
Printer
LCD display screen
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Names and Functions of Parts
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Right Side View
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Logic probe terminals
These are the input terminals for the logic inputs, and
are only to be used with the optional logic probes.
A maximum of two logic probes can be connected (CH A,
CH B).
Analog input terminals
These are input terminals for analog inputs, non-balanced input type (CH 1, CH 2).
[H] : High level input [L] : Low level input
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Names and Functions of Parts
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815
5161718
16171
Lower Side View
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1
POWER switch
Press this key to turn the power supply on and off.
Protective grounding terminal (GND)
Connect to ground.
AC adapter connecting terminal
Use the specified 9418-10 AC ADAPTER(PSA-30U-120, PHIHONG).
EXT TRIG/TRIG OUT terminals
These terminals can be used to synchronize a number of the 8804 units for parallel operation.
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Names and Functions of Parts
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Bottom View
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Battery compartment
Six LR6 alkaline batteries or the 9420 can be installed.
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Names and Functions of Parts
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1
Chapter
Chapter Overvie
.1 Product Overview
The 8804 MEMORY HiCORDER is a waveform recorder that can perform observation and recording simultaneously. It provides both analog and logic input channels, and can be used for each and every application, from low speed phenomena to high speed phenomena.
The main features of the 8804:
(1) A compact, light and portable unit
Because the 8804 is compact and light, it is highly
portable.
The 8804 is also extremely convenient as a portable unit,
since it can be powered either through an AC adapter or by batteries.
(2) Analog inputs and logic inputs
A 8 channel logic input unit is fitted. The logic inputs all
have a common ground with the main unit.
The data for 2 channels of analog inputs and 8 channels
of logic inputs can be simultaneously displayed and recorded.
(3) Powerful waveform capture capability
The 8804 can reliably capture sudden events, since it has 9-bit high resolving power, operates at the very high sampling speed of 400 kS/s, and has a maximum memory capacity of 64 K words (channel 1 only).
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1.1 Product Overview
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(4) Floating analog input units
The analog inputs are floating, and so each input can be connected to its own independent potentials.
(5) Four function modes corresponding to various types of
measurement
The 8804 is provided with several function modes: a Memory recorder function mode (also providing an X-Y plot function) for reliably catching high speed phenomena such as transient phenomena; a Recorder function mode which is capable of continuous real time recording over a long time period; a X-Y CONT recorder function mode for X-Y plots; and an RMS recorder function mode which is capable of measurement of commercial power supplies voltage value by the rms value.
(6) High powered trigger capability
A digital trigger circuit is used. Many and various
settings are available, with functions such as trigger level, trigger slope or trigger filter, or types such as window-out trigger, or any other digital function.
The trigger operation is possible at voltage drops in
commercial power supplies and varying the rms value.
(7) Quick and easy to see waveform reference and observation
The unit has a 4.9 inch (320×240 dot) liquid crystal display.
(8) Recording of the required portion at the required time
By using a fast thermal printer which has a high
resolution of 10 mm/DIV, only the required portion of the recording can be taken.
A screen copy can be easily printed at any time.
(9) High grade intelligence
The 8804 is provided with high grade auxiliary functions, such as the use of cursor measurement and a wealth of calculation functions.
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1.1 Product Overview
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(10) Scaling function
By setting the physical amount of input signal and the name of the units used, it is possible to convert measured data, which are obtained as voltage values, into values in set units.
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1.1 Product Overview
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.2 System Operation
The following page shows a block diagram of the system.
(1) The 8804 incorporates a 8-bit microcomputer (CPU),
which controls the entire system.
(2) The analog input units incorporate 9-bit A/D converters,
and are connected to the 8804 main unit via photocouplers. (The photocouplers are in the analog input units.) Each channel uses a separate power source, which is completely electrically insulated from the main 8804 unit.
(3) The A/D converted data is recorded in memory under
control of the memory controller circuit.
(4) The 8804 main unit employs a digital trigger circuit, and
in the case of an internal trigger, generates a trigger signal by comparing the digital value after A/D conversion with a set value.
(5) Measurement data stored in the memory, after being
handled by the CPU, is displayed on the LCD, and is output on the graphic printer.
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1.2 System Operation
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Analog input units
LCD
Logic inputs
Printer
Total 2 probes
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ol
l
Logic
probes
l
r
r
Logic
probes
Total 2 probes
Block Diagram
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1
2
Analog
input
Analog
input
A/D
A/D
Photo
couple
Photo
couple
Memory contro
and
Trigger circuit
Storage
memory
64 K words
8-bit CPU
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5
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7
8
ontr
pane
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1.2 System Operation
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Basic specification
2 s
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1
.1 Main Units Specifications
.1.1 General specifications
Measurement functions
The number of channels
Memory capacity
Maximum sampling speed
Time axis accuracy
Operating temperature and humidity range
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Chapter
Specification
(For the analog inputs, refer to Chapter 13,Input
Units.")
Memory recorder (high speed recording) Recorder (real time recording) RMS recorder (rms value for commercial power
supplies recording)
XY CONT recorder (real time continuous X-Y
recording)
2 analog channels + 8 logic channels The logic and analog channels are both standard equipment for the 8804.
64 K words (Analog 9 bits + logic 4 channels) × 64 K words/channel (when channel 1 is in use) (Analog 9 bits + logic 4 channels) × 32 K words/channel (when both channel 1 and 2 are in use)
400 kS/s (All channels simultaneously)
±0.01% (difference between grid and actual time)
5to 4035% to 80% RH (no condensation)
2.1 Main Units Specifications
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Insulation resistance and Dielectric strength
Power supply
Maximum rated power
Charging function
Dimensions and mass
7MΩ or more/500 VDC; one minute at
1.5 kVAC (between the main unit and the primary side of the 9418-10) 100 MΩ or more/500 VDC; one minute at 2 kVAC (between the each analog input, and between the analog input and the main unit)
Depending on the 9418-10 AC ADAPTER (PSA­30U-120, PHIHONG) (powering at 12 VDC±10%) Rated supply voltage of the AC adapter is 100 to 240 VAC. (Voltage fluctuations of 10% from the rated supply voltage are taken into account.) Rated supply frequency is 50/60 Hz. Six LR6 alkaline batteries are used. (The AC adapter is prior to batteries when using together.) 9420 BATTERY PACK can be used.
20 VA max when using the AC adapter 15 VA max when using the batteries
The 9420 is used. The 9420 is in the charge mode, when the AC adapter is connected and the power switch is OFF. Approx. 2 or 3 hours necessary to charge
Approx. 245 (W) × 160 (H) × 51 (D) mm Approx. 1.2 kg
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2.1 Main Units Specifications
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Recorder
Recording method
Printer lifetime
Recording paper
Recording width
Recording speed Paper feed
accuracy
Display
Screen Dots spacing
Thermosensitive recording method using a thermal line head
Withstands 5×107pulses (25% printing duty factor) Wear endurance: at least 30 km
Roll type thermosensitive recording paper 74 mm × 10 m
Total recording width 72 mm (576 dots) Waveform portion 60 mm f.s. (1 DIV = 10 mm, 6 DIV f.s.)
Approx. 2 s/cm max ±3%
Approx. 4.9 inch LCD display (320 × 240 dots)
0.31 × 0.31 mm
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.1.2 Trigger Unit
Trigger method Digital comparison method Trigger modes
Trigger source
Trigger condition Types of trigger
(analog)
Types of trigger (logic)
Trigger filter
Trigger level resolution
In the Memory recorder function: SINGLE, REPEAT, AUTO In the Recorder function: SINGLE, REPEAT
Triggering ON or OFF is possible for each source of channel 1 (logic A), channel 2 (logic B), external, and timer. If all are off, the unit runs free. Trigger conditions can be set for each channel individually. With an external trigger, the triggering occurs on a falling edge of 2.5 V, or when the terminal are shorted together. With a timer trigger, the starting time, stopping time and the time interval can be set.
Logical AND or OR of each trigger source Level trigger, window-out trigger, rms value
level trigger, voltage drop trigger (for commercial power supplies)
Pattern trigger specified by 1, 0, and × (× means that either 1 or 0 is fine.)
Available The amount of filter setting possible
1% f.s. (f.s. = 6 DIV)
Pre-trigger
Trigger timing
Trigger output
Trigger input and
0, 5, 10, 25, 50, 75, 90, 95, 100, -95% (in the Memory recorder function mode)
Start and stop: Recorder, XY CONT recorder Start only: Memory recorder, RMS recorder
Open collector output (with 5 V output voltage, active low), pulse width 1.9 ms minimum
Mini-jack (3.5 mm dia.)
output connectors
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.1.3 Memory Recorder Function
Time axis (TIME/DIV)
Time axis resolution
200, 400 μs/DIV 1, 2, 5, 10, 20, 50, 100, 200, 500 ms/DIV 1, 2, 5, 10, 30 s/DIV 1, 2 min/DIV
80 line/DIV
1
2
3
4
Sampling period Recording length
Screenprint format
Interpolation function
Waveform magnification and compression ratio
Waveform scrolling
Roll mode
Auto-print
Manual print Partial print Numerical print
function
1/80 of the time axis 20, 50, 100, 200, 400 (channel 1 and 2)
800 DIV (channel 1 only) SINGLE, DUAL, XY DOT, XY LINE
Available Only line display for the SINGLE and DUAL
×10, ×5, ×2, ×1, ×1/2, ×1/5, ×1/10, ×1/20, ×1/50, ×1/100 (along the time axis) ×4, ×2, ×1, ×1/2 (along the voltage axis)
Available in both the left/right and the up/down directions For the scrolling of up/down direction, change the zero position
ON/OFF Operating in 20 ms/DIV to 2 min/DIV
ON/OFF It automatically prints the memorized waveform
Available Print between the A and the B cursors Record measured data as digital values
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.1.4 Recorder Function
Time axis (TIME/DIV)
Time axis resolution Sampling speed Recording length Screenprint
format Interpolation
function Waveform
magnification and compression ratio
Waveform recording Auto-print
Manual print Partial print
200, 500 ms/DIV, 1 s/DIV (display only) 2, 5, 10, 30 s/DIV 1, 2, 5, 10, 30 min/DIV 1 h/DIV
80 line/DIV (with the printer) 400 kS/s fixed 20, 50, 100, 200, 400 DIV, CONT SINGLE, DUAL
Line display only
×1, ×1/2, ×1/5, ×1/10, ×1/20, ×1/50 (along the time axis) ×4, ×2, ×1, ×1/2 (along the voltage axis)
Memorize and hold the last 200 DIV ON/OFF
Print the memorized waveform automatically (200, 500 ms/DIV, 1 s/DIV are only displayed on the screen.)
Available Print between the A and B cursors
Numerical print
Record the measured data as digital values.
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.1.5 RMS recorder function
Time axis (time/div)
Time axis resolution Sampling speed
5, 10, 30 s/DIV 1, 2, 5, 10, 30 min/DIV 1 h/DIV
80 line/DIV (with the printer) 4 kS/s fixed (16 rms datas/s)
1
2
3
4
RMS accuracy Measuring object
Recording length Screenprint
format Interpolation
function Waveform
magnification and compression ratio
Waveform recording Auto-print
Manual print
Partial print Numerical print
function
±3% f.s. (at 50/60±2 Hz, DC) (f.s.=6 DIV) Commercial power supplies (50/60 Hz)
DC signal 20, 50, 100, 200, 400 DIV, CONT
SINGLE, DUAL
Line display only
×1, ×1/2, ×1/5, ×1/10, ×1/20, ×1/50 (along the time axis) ×4, ×2, ×1, ×1/2 (along the voltage axis)
Memorize and hold the last 200 DIV ON/OFF
It automatically prints the memorized waveform (200, 500 ms/DIV, 1 s/DIV are only displayed on the screen)
Available (Only the memorized data)
Print between the A and B cursors Record the measured data as digital values
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.1.6 X-Y CONT Recorder Function
X and Y axes Sampling speed Effective recording
dimensions Recording time Interpolation
function Superimposition Monitor function Print function
X axis: channel 1, Y axis: channel 2 5 kS/s (dot), 2.5 kS/s max (line) 60 mm × 60 mm (6 DIV × 6 DIV) with the
printer Unlimited Available (dot, line)
Available Monitor display on screen Manual printing, screen copy
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.1.7 Auxiliary
Screen copy Available
1
2
Scaling function Comment input
function
Auto listgauge Numerical
calculation function Cursor read out Waveform back up
function Setting condition
storing function Starting status
backup function Screen back lightin
Available Available
Comment input possible for each channel (12 characters max)
ON/OFF Maximum value, minimum value, peak value,
average value, rms value, area value Available Available
Available, up to 4 Save the setting condition in file format
Available
ON/OFF Go OFF automatically when using the battery pack or LR6 alkaline batteries and printer operating.
3
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.1.8 A List of Optional Accessories
Accessories
9574 INPUT CORD 29232 RECORDING PAPER (roll paper) 1Roll paper attachments 2Instruction Manual 1
Accessories purchased separately
9232 RECORDING PAPER (10 m, 10 rolls)9418-10 AC ADAPTER (PSA-30U-120, PHIHONG)
(90 to 250 VAC free, output 12 VDC)
9420 BATTERY PACK (7.2 V/700 mAh)9372 CARRYING CASE (for main unit and accessories)9379 CARRYING CASE (can be used with this case in)9305 TRIGGER CORD
(3.5 mm dia. mini plug, approx. 1.5 m)
9306 LOGIC PROBE
(4 channels, detects the ON/OFF state of a digital/contact
signal)
9307 LINE TYPE LOGIC PROBE
(Floating 4 channels, detects the ON/OFF state of an
AC/DC voltage)
9010 CLAMP ON PROBE (10 to 500 A: 40 Hz to 1 kHz)9018 CLAMP ON PROBE (10 to 500 A: 40 Hz to 3 kHz)9132 CLAMP ON PROBE (20 to 1000 A, 40 Hz to 1 kHz)9270 CLAMP ON SENSOR (20 A, 5 Hz to 50 kHz)9271 CLAMP ON SENSOR (200 A, 5 Hz to 50 kHz)9272 CLAMP ON SENSOR (20 A/200 A, 5 Hz to 10 kHz)9277 UNIVERSAL CLAMP ON CT (20 A, DC to 100 kHz)9278 UNIVERSAL CLAMP ON CT
(200 A, DC to 100 kHz)
9279 UNIVERSAL CLAMP ON CT (500 A, DC to 20 kHz)9555 SENSOR UNIT
(Used with the 9270 to 9272, and the 9277 to 9279)
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NOTE
The 9270 to 9272 CLAMP ON SENSORs and the 9277 to 9279 UNIVERSAL CLAMP ON CTs are used with the 9555 SENSOR UNIT. They cannot be used by themselves.
1
2
3
4
5
6
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1
.1 Setup
(1) AC adapter
DANGE
NOTE
Always use the specified 9418-10 AC ADAPTER(PSA­30U-120, PHIHONG). The rated supply voltage of an AC adapter is 100 to 240 VAC. (Voltage fluctuations of 10% from the rated supply voltage are taken into account.) The rated supply frequency is 50/60 Hz. Do not use the unit out of this range.
The AC adapter is prior to the battery when using together.
(2) Battery
Chapter
2
Preparation and Setu
3
4
5
6
7
8
9 10
WARNIN
Use the specified 9420 BATTERY PACK or LR6 alkaline batteries. Do not use old and new batteries or batteries of different types together. The manufacturer disclaims all responsibility for any accident or injury except that resulting due to defec in its specified batteries or battery packs. The 9420 are used in sets of three. Do not use with batteries together. Do not use old and new batteries or batteries of different types together. If intend to, performance of the unit may suffer. Especially do not use the 9420 batteries together with different types.
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NOTE
If not recharge, the 9420 can not be used.If the battery voltage drops while the unit is running off
of battery power, the 8804 will automatically switch off the power supply. If the unit is left in this state for an extended period of time, the battery pack may be discharged too much. Be sure to turn OFF the power switch on the unit.
When the battery capacity is reduced, the power is
automatically turned off. Before turning on the power again with AC adapter or new batteries, turn the power off and leave for about 30 seconds.
When not in use for a long time, to prevent possible
corrosion caused by battery leakage, remove the batteries before storage.
For the details on changing and charging batteries, refer
to Section 14.1, "Changing the Battery" and Section 14.3, "Recharging the Battery."
Effective Battery-Powered Operating Time (typical value at normal temperature)
Operating condition Alkaline battery
Printer not operating
(waiting for trigger, etc
Approx. 160 min Approx. 90 min
9420 BATTERY
PACK
Printer operating
recorder function
Approx. 90 min Approx. 50 min
2 s/DIV 1 Hz sinewave
NOTE
Actual performance will change from values indicated in this table according to the types of batteries, temperature, and printing rate.
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3.1 Setup
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(3) Protective grounding (GND)
When using the AC adapter and if a grounded power plug
cannot be used, connect the unit to a proper ground.
Be sure to ground the 8804 properly even when using
batteries.
(4) Environment for use
The operating temperature and humidity range for the 8804 is 5to 40and 35% to 80% RH. Also, do not expose the unit to direct sunlight, dust, or corrosive gas.
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2
3
4
5
6
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Stock cover
r
Holder
Attachments
3
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.2 Loading Recording Paper
(1) Pull the stock cover to open.
(2) Raise the head up/down lever.
Head up/down leve
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3.2 Loading Recording Paper
(3) Insert the attachments into the hole of the roll of 9232
RECORDING PAPER. Insert the leading edge of the paper from under into the gap behind the printer roller, and pull it out upward.
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(4) Set the paper into its holder and pull it out about 10 cm,
and make sure that it is positioned quite straight.
1
2
3
4
5
NOTE
There is a possibility of a paper jam if the recording paper is slanted against to the roller. Be sure to set the paper correctly.
(5) Put down the head up/down lever. (6) Pull the recording paper to the outside through the
printer exit slot in the stock cover.
(7) Close the stock cover, and finish by tearing off the
recording paper at the edge of the printer exit slot.
6
7
8
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NOTE
Always put the unit in the head up condition when it is to
be transported or stored for a long period of time. If the unit is left in the state in which the head is applying pressure to the platen roller, the roller may be deformed, and the printed characters may become uneven.
If the recording paper is set in back to front by mistake,
the waveform cannot be drawn. Make sure to set the paper correctly.
This unit uses a thermal printer. The recording paper
supplied has characteristics finely tuned for use with the printer.
Using recording paper of a different specification may not
only result in impaired printing quality, but even prevent the printer from operating. Always use the HIOKI specified product.
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3.2 Loading Recording Paper
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3
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.3 Care of Recording Paper
Thermosensitive recording roll paper which until use is
kept in normal conditions will not be affected by the environment. However the paper should not be kept for a long time at a temperature higher than 40. Low temperatures cause no problems.
There is a tendency for the texture of the paper to be
discolored if the paper is strongly illuminated for a long time. Therefore, after taking off the wrapping paper be careful not to leave the roll paper in strong light.
1
2
3
4
5
6
.3.1 Storing data
The recording paper uses a thermochemical reaction. Note the following points:
To avoid discoloration, do not leave recording paper in
direct sunlight.
Store at not more than 40and 90% RH or less.To keep definitive data, make photocopies of the
recordings.
Thermal paper changes color if it comes into contact with
organic solvents such as alcohols, esters, and ketones.
If the thermal paper absorbs an organic solvent such as
alcohols or ketones it may no longer develop properly, and recorded information may fade. Soft PVC film and transparent contact adhesive tape contain such solvents, so avoid using them with recordings.
Avoid interleaving the thermal recordings with damp
diazo copies.
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.4 During Measurement
DANGE
WARNIN
The maximum rated voltage at the input terminals o the analog input is 500 V (DC + AC peak). In order to avoid electric shock accident and damage to the unit, do not exceed this range. The maximum floating voltage for the analog inputs is 450 V AC/DC. In order to avoid an electric shock accident and damage to the unit, do not input voltage in excess of these limitations, either between any two channels, or between a channel and the main unit.
The logic inputs and the 8804 have a common ground. When measuring input which has different reference potential, beware of electric shock.
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3.4 During Measurement
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1
Screen Displays an
.1 Screen Displays
For each function the screen displays can be divided into three screens: waveform, status, and trigger; and there are also three system screens. The Memory recorder function mode also has a numerical calculation screen.
.2 Types of Screen Display
(1) The status (stts) screen
The general settings, such as time axis and recording length, can be set.
Chapter
Setting
2
3
4
5
6
7
8
9 10
(2) The trigger (trig) screen
The trigger condition can be set.
(3) The waveform screen
This is the screen for displaying the measurement results. The main setting items can be also set in this screen.
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(4) The system (SYSTEM) screen
System screen contains 3 screens: Input level Monitor screen, Page 1 screen, and Page 2 screen. Input level monitor screen displays level monitor. In page 1 screen, system variable, comment setting, and clock setting are performed. In page 2 screen scaling, saving the setting condition, and each checking are performed.
(5) The numerical calculation screen (Memory recorder)
The numerical measurement is performed.
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4.2 Types of Screen Display
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.3 Screen Configuration
1
2
Memory Recorde
Waveform Screen
Recorder
Waveform Screen
RMS Recorder
Waveform Screen
XY CONT
Waveform Screen
System Input
Level Monitor
Screen
Memory Recorde
Status Screen
Numerical
Calculation Screen
Recorder
Status Screen
RMS recorder
Status Screen
XY CONT
Status Screen
System
Page 1 Screen
Memory Recorde
Trigger Screen
Recorder
Trigger Screen
RMS Recorder
Trigger Screen
XY CONT
Trigger Screen
System
Page 2 Screen
3
4
5
6
7
8
9 10 11
: Press the MENU/WAVE key, and the screen displays change i
the arrow direction.
: Press the
item, the function changes in the lower direction, and also press
: Press the
numerical calculation screen, it changes to the numerical calculation screen. (Refer to Section 6.7,Numerical Calculation
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key after moving the flashing cursor to the functio
key, the function changes in the upper direction.key after moving the flashing cursor to the
4.3 Screen Configuration
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Flashing cursor
s
4 4
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.4 Changing the waveform, status,
trigger, and system screens
Method
Press the MENU/WAVE key, and the screen display changes as shown in the Screen Configuration in the previous page.
NOTE
Press the START key, the measurement will start on any screen except the system screen, and changes to the waveform screen.
.5 Function Changing
Method
1. Using the CURSOR keys, move the flashing cursor to the function item.
2. Select the function by using the and keys. These functions are basic measurement function, and there are the Memory recorder, Recorder, RMS recorder, and X-Y CONT recorder functions.
, key
CURSOR keys
NOTE
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4.4 Changing the waveform, status, trigger, and system screens
Turn on the power supply with pressing the SHIFT key. The language to be displayed can be changed. (JAPANESE to ENGLISH)
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1
.1 Setting Method
By using the CURSOR keys, and keys, and
MENU/WAVE key, all settings can be made.
.1.1 Setting Procedure
(1) Using the MENU/WAVE key, change the screen display to
the screen of setting item.
(2) Using the CURSOR keys, move the flashing cursor to the
item to be set.
(3) Using the , keys, select or change the settings.
Chapter
2
Basic Operatio
3 4 5 6 7 8 9
10
NOTE
When making a setting on the screen except the
waveform screen, the selectable setting contents are displayed on the lower screen.
On the waveform screen if the SHIFT key is pressed (the
SHIFT mark indication), the setting can not be changed by
using the CURSOR keys and , keys. Release the
SHIFT key so that the mark indication goes out.
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.1.2 Example Settings
Settings for Recorder function on the status (stts) screen.
(1) Press the MENU/WAVE key, and select the status screen
(stts).
(2) Set the function to RECORD.
1. Using the CURSOR keys, move the flashing cursor on the function item.
2. By using the and keys, select "RECORD"
(3) Set the time axis range to 5 s/DIV.
1. Using the CURSOR keys, move the flashing cursor to time.
2. By using the and keys, set to "5 s/DIV"
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(4) Set the recording length to CONT.
1
1. Using the CURSOR keys, move the
flashing cursor to shot.
2. By using the and keys, set to
"CONT".
(5) Set the screen setting to single (SINGLE).
1. Using the CURSOR keys, move the
flashing cursor to format.
2. By using the and keys, set to
"SINGLE".
Set the rest of items following the same procedures above.
2 3 4 5 6 7 8 9
10
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.2 Basic Setting Items of Each Function
Functio
Selection (1) Time axis range (2) Magnification/compression
along the time axis
range (3) Recording length (4) Screen setting (format) (5) Frequency (6) Waveform clear (7) Line style (8) Channel information (9) Waveform display (10) Voltage axis (X, Y axis
range (11) Input coupling (12) Magnification/
compression along the voltage axis range
Memory
recorde
Recorde
RMS
recorde
X-Y CON
recorder
(13) Position (14) Filter (15) Trigger setting (16) Print types (17) Roll mode (18) Automatic printing (19) Numerical calculation (20) Zero adjust
: setting possible, : cannot be set,○: partly possible
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5.2 Basic Setting Items of Each Function
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(1) Time axis range
Show the time interval along the time axis direction for 1 DIV (a scale of the recording paper).
Selection
200, 400 μs/DIV
Memory recorder
Recorder
RMS recorder
1, 2, 5, 10, 20, 50, 100, 200, 500 ms/DIV 1, 2, 5, 10, 30 s/DIV 1, 2 min/DIV
200, 500 ms/DIV, 1 s/DIV (Display only) 2, 5, 10, 30 s/DIV 1, 2, 5, 10, 30 min/DIV 1 h/DIV
5, 10, 30 s/DIV 1, 2, 5, 10, 30 min/DIV 1 h/DIV
1 2 3 4 5 6 7
NOTE
In the Memory recorder function, the sampling period is 1/80th of the set value for the time axis range.
(2) Magnification/compression along the time axis
Set the magnification/compression ratio along the time
axis.
By magnifying the waveform, detailed observations is
possible. By compressing the waveform, an entire change can be promptly apprehended.
In the Recorder and RMS recorder function modes, the
magnification setting is not possible.
The waveform is magnified or compressed from the end of
the left on the screen.
Selection
Memory recorder
Recorder
RMS recorder
×10, ×5, ×2, ×1, ×1/2, ×1/5, ×1/10, ×1/20, ×1/50, ×1/100
×1, ×1/2, ×1/5, ×1/10, ×1/20, ×1/50
8
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×10
×1/2
(3) Recording length
The length of recording for one measurement operation (number of DIV) can be set.
Selection
Memory recorder
Recorder
RMS recorder
20, 50, 100, 200, 400 DIV (channel 1, 2) 800 DIV (channel 1 only)
20, 50, 100, 200, 400 DIV, CONT
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Input waveform
Input waveform
Input waveform
Input waveform
Graph 1
Graph 2
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(4) Screen setting
The style can be set for showing input signal waveforms
on the screen display and recording them on the printer.
The styles SINGLE and DUAL are available. X-Y DOT
and X-Y LINE are available only in the Memory recorder function.
1
2
3
Selection
Memory recorder Recorder
RMS recorder
1. SINGLE
Display and record as one graph (2 analog signals and 8 logic signals max).
2. DUAL
Display and record as two graphs (on each graph, an
analog signal and 4 logic signals max).
Input waveform for channel 1(A) is displayed on the
graph 1, and the data for channel 2(B) is displayed on the graph 2.
SINGLE, DUAL, X-Y DOT, X-Y LINE
SINGLE, DUAL
4
5
6
7
8
9 10 11 12 13
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Input waveform
Input waveform
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3. X-Y DOT, X-Y LINE
Display the X-Y combination of waveforms. (Refer to
Section 6.6,Using X-Y Waveform Plots.")
The channel 1 is X-axis and the channel 2 is Y axis.Display and record as one graph.
NOTE
The difference between X-Y DOT and X-Y LINE is whether linear interpolation is performed or not.
(5) Frequency (RMS recorder only)
Set the frequency of commercial power supplies (50/60 Hz).
(6) Waveform clear (X-Y CONT recorder only)
It sets whether clear the waveform or not when pressing
the START key to start measurement and the previous waveform is left.
If the waveform is not cleared, the waveform is
superimposed.
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5.2 Basic Setting Items of Each Function
Waveform clear: ON
Waveform clear: OFF
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(7) Line style (X-Y CONT recorder only)
It sets to display and record the input signal (the sampled data) either just as it is, or after subjecting it to linear interpolation.
1
2
3
4
5
Dot display
Linear interpolation is not
performed.
The sampled data is faithfully
displayed just as it comes.
(8) Channel information
It displays the information of the input setting or upper and lower limit values on the waveform screen.
Selection
It displays the setting items, such as
SETTING
UP & LOW
waveform displays and the voltage axis range, of the input.
It displays the range of the voltage value. (Upper and lower limit value).
Linear interpolation isThe display is easier on the
Line display
performed. eye.
6
7
8
9 10 11 12 13 14
SETTING
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UP & LOW
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Analog channel 1, 2
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(9) Waveform display
It sets the channel to be displayed or recorded to ON () or OFF ().
Logic channel A, B
(10) Voltage axis (X, Y axis) range
Set the voltage value for 1 DIV along the voltage axis
direction (vertically).
The channel 1 is shown along the X axis and the
channel 2 is shown along the Y axis (at X-Y plot).
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5.2 Basic Setting Items of Each Function
Flashing cursor
Selection
Memory recorde
Recorder
RMS recorder
20, 50, 100, 200, 500 mV/DIV 1, 2, 5, 10, 20, 50 V/DIV 100 V/DIV
20, 50, 100, 200, 500 mV/DIV 1, 2, 5, 10, 20, 50 V/DIV
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(11) Input coupling
It sets the coupling condition of the input signal.
1
Selection
The input signal is directly
DC (V)
GND (
Flashing curso
(12) Magnification/compression along the voltage axis range
For each channel, set the magnification/compression ratio along the voltage axis.
Selection Memory recorde
Recorder
RMS recorder
Flashing curso
connected to the input amplifier. This allows a DC component to be measured.
The input signal is not connected. This allows the zero position to be checked.
×4, ×2, ×1, ×1/2
2
3
4
5
6
7
8
9 10
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Flashing cursor
o
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(13) Position
Set the zero position for each channel.When the magnification/compression ratio is set to ×1,
the selections are from -0.4 DIV to 6.4 DIV. Refer to the table on the next page for other selections.
When the position setting is 3 DIV, 0 V appears at the
center of the screen (50% position).
When the magnification/compression ratio is set to ×1, if
set the position to 0 DIV, 0 V appears at the 0% position of the screen, and if set the position to 6 DIV, 0 V appears at the 100% position of the screen.
The range for the position varies according to the
magnification/compression ratio along the voltage axis.
NOTE
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5.2 Basic Setting Items of Each Function
Magnification/ compression ratio
Position (DIV)
×1/2, ×1 ×2 ×4
-0.4 to 6.4 -6.8 to 12.8 -19.6 to 25.6 (DIV)
If the applied voltage to the analog inputs exceeds the
maximum input voltage, at ×1/2 compression setting, the waveform is displayed as figure below. Change the voltage axis range.
Magnification/compression rati
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Time axis waveform
A/D Data
256
0(V)
  0
Position 0 DIV 3 DIV 6 DIV
511
Display
Display
Display
0DIV
3DIV
6DIV
T
axis
511
0DIV
3DIV
0DIV
6DIV
Display 3DIV
6DIV
axis
256
(0 V)
256 (0 V)
511
Display Display
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NOTE
The position has the significance shown in the figure below. It is possible to display the hidden portion of the waveform, according to the relative position of the displayed section at which 0 V appears.
1 2 3 4 5 6 7
he X-Y combination of waveforms
NOTE
In the X-Y CONT recorder function, since the time axis waveform for each channel is not stored, even if the position is changed after the measurement, the hidden portion of the waveform can not be seen.
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(14) Filter
Set low-pass filters (cut-off frequency) which is inside of
the analog inputs and restricts frequency.
This filter has the good effect of getting rid of the
following phenomena:
1. In case of level recording in the Recorder function mode, because of high speed sampling and wide band amplification, the influence of ripple components and noise in the signal can thicken the recording line.
2. The case in which the recording line becoming thick because ripples are present in the output such as transducers.
3. Pulse type noise in the RMS recorder function.
Selection Memory recorde
Recorder
OFF, 500 Hz, 5 Hz
RMS recorder
Flashing curso
(15) Trigger setting
Refer to Chapter 11,Trigger Function" to find out about the trigger setting.
(16) Print types
Set either print out the measured data in waveform or in numerical form. Refer to Section 5.4.2,Setting the Style for Recording on the Printer."
(17) Roll mode (Memory recorder only)
It is possible to see the waveform rolled like the Recorder function in slow time-axis ranges below 20 ms/DIV. Refer to Section 6.5,Roll Mode Function."
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(18) Automatic printing
It automatically records into the printer. Refer to Section
5.4.3,Recording on the Printer."
(19) Numerical calculation (Memory recorder only)
It is possible to calculate the waveform data. Refer to Section 6.7,Numerical Calculation."
(20) Zero adjustment
It adjusts the waveform position at the position value when the input voltage is 0 V. Refer to Section 5.5,Zero Adjustment."
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y
y
5
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.3 Starting and Stopping Measurement
Pressing the START key starts measurement. While measurement is taking place, the LED above the START key is illuminated green. When measurement has finished, the LED goes out.
Method
1. Press the START key.
LED
Measurement will start.
2. Press the STOP key. Measurement will stop.
START ke
STOP ke
.3.1 Measurement Starting and Stopping in the
Three Trigger Modes
(1) When the trigger mode is SINGLE:
Press the START key and if the trigger conditions hold, an
amount of data of length equal to the recording length will be read in and stored.
Without pressing the STOP key, the system will go into
the measurement finished state.
(2) When the trigger mode is REPEAT:
Press the START key, and if the trigger conditions hold,
an amount of data of length equal to the recording length will be read in and stored.
Thereafter, every time the trigger conditions hold, data
will be read in and the contents of the memory will be overwritten.
Press the STOP key or change the trigger mode to
SINGLE to terminate measurement.
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(3) When the trigger mode is AUTO:
Press the START key and wait one second for the trigger
conditions to hold. After that whether or not the trigger conditions hold, an amount of data of length equal to the recording length will be read in and stored.
Thereafter, repeatedly, data will be read in and the
contents of the memory will be overwritten.
Press the STOP key or change the trigger mode to
SINGLE to terminate measurement.
.3.2 Stopping Measurement (in the Memory
Recorder Function)
During reading the waveform data in the range which the
setting of the time axis range is more than 20 ms/DIV, even if the STOP key is pressed, the LED above the START key is illuminated and measurement operation continues until reading in and storage of waveform data has finished.
1 2 3 4 5 6 7 8 9
If the time axis range is 20 ms/DIV or less, the waveform
is displayed to the sampled point. When setting the trigger mode to REPEAT or AUTO and stopping the operation after reading the waveform data, change the trigger mode to SINGLE without pressing the STOP key.
When waiting for the trigger, press the STOP key, and
this stops the reading in and storage of the waveform. The last waveform is displayed at this time. If the trigger mode is SINGLE or the recording length is more than 400DIV, the waveform is not displayed.
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5
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.4 Printer Operations
.4.1 Types of Recording and Functions
Recording method
Manual print Partial print Auto print Screen copy print
: Can be executed, : Cannot be executed
NOTE
While printing out, the back light forcibly goes off.
Functio
Memory recorde
Recorde
RMS
recorde
.4.2 Setting the Style for Recording on the
Printer (Types of print)
There are two styles of recording on the manual and
partial print; waveform (WAVE) and numerical values (LOGGING). Either of these can be selected.
In the X-Y CONT recorder function, the recording as
numerical values is not possible.
X-Y CON
recorder
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Method (on the status screen)
1. Move the flashing cursor to prt kind.
2. By using the and keys, select WAVE or LOGGING.
3. When LOGGING is selected in step
2., move the flashing cursor to interval and set the data sampling interval to be printed out.
Flashing curso
Selection
Memory recorder Recorder RMS recorder
1, 8, 16, 40, 80, 160, 400, 800, 1600 samples
1 2 3 4 5 6 7
NOTE
Waveform  
Numerica
1 DIV equals to 80 samples.
NOTE
In the Recorder and RMS recorder function, however the maximum and minimum values are saved in memory as data, the maximum value is printed out as numerical printing.
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.4.3 Recording on the Printer
(1) Manual printing (all function)
This prints out the stored data from one measurement for
its entire recording length.
Since the measurement data is saved in memory, it can
be reprinted as many times as required.
Method
1. When measurement is finished, press the PRINT key. (The A and B cursors displayed on the screen are not printed.)
FEED ke
PRINT ke
COPY ke
NOTE
The recording as numerical values can not be performed
in the X-Y CONT recording function.
Pressing the FEED key except during measuring, the
recording paper is fed.
(2) Partial printing (Memory recorder, Recorder, RMS recorder
function)
Using the A and B cursors, print out only the desired
portion of the entire length of the recording. The part of the waveform delimited by the two cursors is printed.
When only A cursor is used, the waveform data from the
A cursor is printed out.
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Method (on the Waveform screen)
1
This portion is printed out
NOTE
Partial printing can be used for both waveform printing
(WAVE) and numerical printing (LOGGING).
When the roll mode is set to ON (only Memory recorder
function) at the auto-printing, the partial printing is not possible. (Refer to Section 6.5, "Roll Mode Function.")
(3) Auto print (Memory, Recorder, RMS recorder function)
When the view is enlarged along the voltage axis,
printouts on the printer will also be enlarged in the same manner. The auto printing can be used for both waveform printing (WAVE) and numerical printing (LOGGING).
After reading the waveform data, the data is
automatically printed out. (Memory recorder)
Printing out simultaneously with the reading data.
(Recorder, RMS recorder)
Printing is not possible in the time axis range which is
faster than 2 s/DIV. (Recorder)
The intermittent printing rate differs depending on
whether power is being supplied through the AC adapter or from batteries. (Refer to Section 12.3.4 "Intermittent Printing").
1. Using the A and B cursors, indicate the part of the waveform which is desired to record. (Refer to Section 10.1,Using the A and B cursors."
2. Press the PRINT key.
2 3 4 5 6 7 8
9 10 11 12 13 14 15
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Method (on the status screen)
1. Using the CURSOR keys, move the flashing cursor to auto print.
2. By using the and keys, select to ON.IfOFF is selected, the printing out is not performed.
3. Press the START key. It prints out simultaneously with the data reading.
Flashing cursor
NOTE
Method
NOTE
In the Recorder and RMS recorder function, if the printing interval is set to less than 80 at the start of auto printing (auto print ON), the following warning message appears and the interval is forcibly set to 80. "WARNING 23: Can’t set interval to 1-40"
(4) Screen copy printing (all function)
It is possible to make a direct hard copy of the screen display when in the waveform screen, status screen, trigger screen, or system screen.
Press the COPY key.
It is possible to supplement manual or auto printing of a waveform with a listing or gauge. (Refer to Section 12.3.3, "Listing and Gauge Functions.")
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5
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.4.4 Head Up and Paper End
1
When the printer head is up, the printer will not operate.
An attempt to print produces the following error message: "ERROR 2: Lower the printer lever."
If the printer paper runs out, printing stops. An attempt
to print produces the following error message: "ERROR 1: Reload the printer paper."
.4.5 Head Temperature Protection Function
The printer has a thermal head equipped with a
temperature protection circuit. This cuts out operation of the printer if the head temperature reaches a certain level. It is therefore possible for the printer to stop operating while in use, and temporarily feed blank paper.
The tendency of the head temperature to rise is
exacerbated by a greater black area being printed, and by a faster paper feed speed. Additionally, higher ambient temperatures make it more likely that the head temperature will rise and trip the protective mechanism.
When the temperature protection circuit operates and
printing is disabled, once the head temperature has cooled enough printing is able to restart.
If printing stops repeatedly, adjust the ranges to reduce
the area of black printed.
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.5 Zero Adjustment
This function provides for accurate adjustment of the waveform to the origin position when inputting a zero voltage. Use it for reading precise values from the screen, a printed recording or to ensure accurate results from waveform computations.
Method (on the status screen)
1. Using the CURSOR keys, move the flashing cursor to (0 adjust).
2. Press the START key.
Flashing curso
NOTE
―――――――――――――――――――――――――――――――――――
5.5 Zero Adjustment
Zero adjustment should be performed after about 30
minutes of warm-up at the powering on.
Zero adjustment cannot be performed while measurement
is taking place.
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1
Chapter
Memory Record
Function Mod
.1 What is the Memory Recorder
Function?
.1.1 Introduction
In this function mode, once the input signal has been stored in the memory of the 8804, it can be subjected to various forms of processing. By recording the data, a great number of useful ways become possible.
(1) Once an input signal has been stored in the memory, it
can be displayed and recorded.
2 3 4 5 6 7 8 9
10
(2) Recording can be performed for all input channels along
the same time axis. Allowing the signals to overlap makes it easier to see their relative relationships.
(3) The maximum sampling speed is 400 kS/s.
(4) The maximum recording capacity (recording length) is
64 K words divided by the number of channels. (Corresponding to 800 DIV, when channel 1 is in use.)
(5) The time axis range scale can be set to any of 18 levels,
from 200 μs/DIV to 2 min/DIV.
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(6) Magnified and compressed display and recording are
available, both along the time axis and along the voltage axis.
Along the time
axis
Along the voltage
axis
(7) Three types of display format can be chosen from. For a
time axis waveform, SINGLE, DUAL, and for X-Y display and recording are available.
(8) Partial printing is available. From a recorded waveform,
it is possible to extract and print only the section which one desires to see.
(9) Reprinting is available. Once a waveform has been
recorded, it can be printed as many times as desired.
(10) With the pre-trigger function, it is possible to inspect the
signal before the trigger point. (11) The conversion to the X-Y waveform plot is possible. (12) With the calculation functions, a captured waveform can
be analyzed.
×10, ×5, ×2, ×1, ×1/2, ×1/5, ×1/10, ×1/20, ×1/50, ×1/100
×1/2, ×1, ×2, ×4
.1.2 Finding Reference Material in This Manua
(1) Basic setting items (refer to Section 5.2, "Basic Setting Items
of Each Function").
There are time axis range, magnification/compression
along the time axis range, recording length, waveform
display, voltage axis range, input coupling,
magnification/compression along the voltage axis range,
position, and filter.
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(2) Start/stop measurement operation. (Refer to Section 5.3,
"Starting and Stopping Measurement.")
Measurement is started by pressing the START key and finished by pressing the STOP key.
1 2
(3) Printing function (Refer to Section 5.4, "Printer Operations.")
There are two styles of recording; waveform (WAVE) and numerical values (LOGGING). There are four methods of printing, manual printing, partial printing, auto printing, and screen copy printing.
(4) Zero adjustment function (Refer to Section 5.5, "Zero
Adjustment.")
This function provides for accurate adjustment of the waveform to the origin position when a zero voltage is input.
(5) A and B cursors operations (Refer to Section 10.1, "Using
the A and B Cursors.")
The time differences, frequencies, and voltage differences getting a direct digital can be readout on the waveform screen.
(6) Waveform scrolling function (Refer to Section 10.2,
"Waveform Scrolling.")
The waveform can be scrolled vertically and horizontally.
(7) Roll mode (Refer to Section 6.5, "Roll Mode Function.")
In the time axis range which is less than 20 ms/DIV, after triggering, it is possible to start waveform display simultaneously with the waveform readout, scrolling just as during operation in the Recorder function mode.
3 4 5 6 7 8
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(8) Screen setting (Refer to Section 5.2, "Basic Setting Items of
Each Function" - (4).)
Three types of screens (display format) can be selected.
(9) Waveform X-Y plot (Refer to Section 6.6, "Using X-Y
Waveform Plots.")
(10) Channel information function (Refer to Section 5.2, "Basic
Setting Items of Each Function" - (8).)
(11) Trigger function (Refer to Chapter 11, "Trigger Function.")
It is possible to select a suitable trigger from the many types of triggers available. Level trigger, window-out trigger, logic trigger, voltage drop trigger can be used as the internal trigger.
(12) Numerical calculation function (Refer to Section 6.7,
"Numerical Calculation.")
Waveform parameter calculation can be performed.
(13) Scaling function (Refer to Section 12.4.1, "Scaling
Function.")
The scaling function allows the units and numerical values for the input voltages to be converted, so that they can be directly read out as physical values of the parameters which are being measured.
(14) Comment input function (Refer to Section 12.3.9,
"Appending Comments.")
Instead of making handwritten memos on recordings, comments can be input.
(15) List and gauge functions (Refer to Section 12.3.3, "Listing
and Gauge Functions").
These functions provide voltage axis scales and listings of settings on printed recordings.
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6.1 What is the Memory Recorder Function?
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.2 Display Screens
(1)Status screen
Function
Time axis range
Recording length
Roll mode
Screen setting
Types of print
Memory, Record, RMS, XY CONT, System
200, 400 μs/DIV 1, 2, 5, 10, 20, 50, 100, 200, 500 ms/DIV 1, 2, 5, 10, 30 s/DIV 1,2 min/DIV
20, 50, 100, 200, 400 DIV (channel 1, 2) 800 DIV (ch 1 only)
OFF, ON Display simultaneously
SINGLE, DUAL, X-Y DOT, X-Y LINE
WAVE, LOGGING Select whether the
Select function.
Set the time for 1 scale (1 DIV). The sampling period is 1/80th of the set value for the time axis range.
The length of recording for one measurement operation (the number o DIV) can be set.
with waveform reading. Set the style for
displaying waveforms on the waveform screen and recording them on the printer.
printer output should be waveforms (WAVE) or numerical values (LOGGING).
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Print interval
Auto-print
Channel information
Waveform display
Voltage axis range
Input coupling
Magnification/ compression along the voltage axis
Position
Filter
Zero adjustment
Numerical calculation screen
1, 8, 16, 40, 80, 160, 400 800, 1600
OFF, ON Print simultaneously
SETTING, UP & LOW Display information for
OFF, ON Select whether display
20, 50, 100, 200, 500 mV/DIV 1, 2, 5, 10, 20, 50, 100 V/DIV
V (DC), (GND) Select the connection for
×4, ×2, ×1, ×1/2 Set the magnification/
-0.4 to 6.4 DIV (magnification ratio; ×1)
OFF, 500 Hz, 5 Hz Set the low-pass filters
0 adjust Perform the zero
to-MEASUREMENT Display the numerical
When recording as numerical value, set the printing interval.
with displaying the waveform.
the input setting or upper and lower limit values on the waveform screen.
waveforms or not. Set the voltage axis
range for each channel.
the input.
compression ratio along the voltage axis for each channel.
Set the position for each channel.
to restrict the frequency bands .
adjustment.
calculation on the screen.
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6.2 Display Screens
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(2) Waveform screen
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Function
Trigger mode
Internal trigger
Time axis range
Magnification/ compression along the time axis
A and B cursors
Waveform display
Voltage axis range
Memory, Record, RMS, XY CONT, System
SINGLE, REPEAT, AUTO Select whether to stop
OFF, LEVEL, OUT, LOG DIP
200, 400 μs/DIV 1, 2, 5, 10, 20, 50, 100, 200, 500 ms/DIV 1, 2, 5, 10, 30 s/DIV 1, 2 min/DIV
×10, ×5, ×2, ×1, ×1/2, ×1/5, ×1/10, ×1/20, ×1/50, ×1/100
OFF, , , The A and B cursors can
OFF, ON Select whether or not
20, 50, 100, 200, 500 mV/DIV 1, 2, 5, 10, 20, 50, 100 V/DIV
Select function.
after a single recording, or carry out repeated recording.
Set the internal trigger.
Set the time for 1 scale (1 DIV). The sampling period is 1/80th of the set value for the time axis range.
Set the magnification/ compression ratio along the time axis.
be used.
display waveforms. Set the voltage axis
range for each channel.
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Input coupling
Magnification/ compression along the voltage axis
Position
NOTE
V(DC), (GND) Select the connection for
the input.
×4, ×2, ×1, ×1/2 Set the magnification/
compression ratio along the voltage axis for each channel.
-0.4 to 6.4 DIV (magnification ratio; ×1)
Set the position for each channel.
By level meter function, (Refer to Section 11.10, "Level Meter Function.") the level of the analog input signal is displayed on the waveform screen during waiting for the trigger.
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6.2 Display Screens
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(3) Trigger screen
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Function
Trigger source AND/OR
Internal trigger
External trigger
Trigger mode
Pre-trigger
Timer trigger
Memory, Record, RMS, XY CONT, System
AND, OR Set whether the triggers
OFF, LEVEL, OUT, LOGIC, DIP
OFF, ON Using of the external
SINGLE, REPEAT, AUTO Select whether to stop
0, 5, 10, 25, 50, 75, 90, 95, 100, -95 %
OFF, ON Used when recording at
Select function.
are AND or OR. Set the internal trigger.
input as a trigger source is possible .
after a single recording or carry out repeated recording.
Set the proportion in percent of the recording length of the signal that comes before the trigger
a predetermined time.
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.3 Basic Operational Procedures
.3.1 Operational Flow
The flowchart below illustrates the sequence of operations involved in using the memory recorder function.
Start
Turn the power ON
Connect the inputs
Status (stts) screen
Function setting
Set the time axis range (time
Set the recording length
(shot)
Set roll mode
Set the screen format
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6.3 Basic Operational Procedures
Set to the Memory recorder function mode.
Set the input and storage speed for the input signal waveform.
Set the length of the recording for one measurement.
Like the recorder function, in time axis range less than 20 ms/DIV, the waveform can be scrolled.
Set the format type for the waveform display screen.
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Set printer output form
(prt kind)
Set the auto-print function
Settings relating to the inputs
Trigger (trig) screen
Set the trigger conditions
Measurement
Set whether measurement data will be sent to the printer as a waveform or as numerical values.
Set whether or not printing will occur simultaneously with screen display.
Set the channels for which display and recording will be performed. Also set voltage axis range, magnification/compression along the voltage axis range, input coupling, and filters.
Set the trigger source, the trigger type and conditions, and the pre­trigger.
Press the measurement.
START key and start
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Record on the printer
End
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After measurement has been completed, print the results
6.3 Basic Operational Procedures
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.3.2 Example of Operation
This example illustrates the procedure connecting the 8804 to an oscillator to measure and record a 8 Vp-p 1 kHz sine wave input.
(1) Turn on the power.
Turn on the power switch on the 8804.
(2) Connect the input.
Connect the oscillator to the input terminal of channel 1 of the 8804. Set the oscillator so that it outputs a sine wave of frequency 1 kHz and voltage of 8 Vp-p.
(3) Set the status screen.
1. Using the CURSOR keys and , keys, set as same as the setting on the figure left.
(4) Set the trigger screen.
1. Press the MENU/WAVE key to display the trigger screen.
2. Using the CURSOR keys and , keys, set as same as the setting on the figure left.
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6.3 Basic Operational Procedures
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(5) Set the waveform display.
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1. Press the MENU/WAVE key to display
the waveform screen.
2. Using the CURSOR keys and ,
keys, set time axis magnification/compression to " ×1".
(6) Begin measurement.
Press the START key. The LED above the key will light up and then the measurement starts.
(7) End measurement.
When storing in the memory of 20 DIV of data is completed, the LED goes out and the system enters the STOP condition, and the waveform is shown on the screen.
(8) Print out.
1. Press the COPY key. The display
copy as the figure left is recorded.
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6.3 Basic Operational Procedures
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2. Press the PRINT key. The manual print as the figure below is recorded.
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6.3 Basic Operational Procedures
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.4 Auto-Range Function
The time axis range and the voltage axis range for the
input waveform are automatically set and shown on the screen display.
Taking the lowest numbered channel among the channels
for which waveform display is on, 1 to 2.5 cycles are automatically set to be recorded as 8 DIV.
1 2 3 4
Method (on the waveform screen)
1. Press the left and right CURSOR keys simultaneously and then press the START key.
2. After setting the range, the LED above the START key will light up and then the measurement is automatically started.
NOTE
If there is only a small difference between maximum
value and the minimum value in the range of highest sensitivity for the channel 1, the setting is made to the time axis for the channel 2.
If the range cannot be determined, for channels 1 and 2 ,
a warning message appears, and measurement is stopped.
If measurement has started using the auto-range function,
only the items on the next page are changed:
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6.4 Auto-Range Function
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Time axis range, input range, zero position value
Trigger source (channels 1 and 2), trigger level value
Input filter, and input coupling
Trigger type, slope, and filter External trigger and timer trigger
Trigger mode Pre-trigger Magnification/compression ratio along the
time and voltage axes
Set automatically.
Set automatically.
Set to OFF, V (DC).
Set to level, rising ( ), or OFF.
Set to OFF. Set to AUTO. Set to 10 %.
Set to ×1.
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6.4 Auto-Range Function
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.5 Roll Mode Function
This function is only available in the time axis range
which is less than 20 ms/DIV when the screen is set to SINGLE or DUAL.
With the roll mode setting OFF, after the start of
measurement, because usually auto-print is only performed after one recording length of data has been completely sampled, during low speed sampling it takes a long time to complete the printing.
If roll mode is enabled (ON), after triggering, it is possible
to start waveform display and print by the auto-print simultaneously with the capturing waveform, just as during operation in the Recorder function mode.
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Method (on the status (stts) screen)
1. Using the CURSOR keys, move the flashing cursor to roll mode.
2. By using the and keys, set to
ON.
NOTE
If the roll mode is enabled, the partial print by using the A and B cursors is not performed with auto-print ON.
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6.5 Roll Mode Function
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Ch 1 Input waveform
X axis
Ch 2 Input waveform
Y axis
X-Y plot
X axis
Y axis
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.6 Using X-Y Waveform Plots
Setting the screen displays to X-Y DOT or X-Y LINE
allows for X-Y combination of waveforms.
The channel 1 is shown as X-axis and the channel 2 is
shown as Y-axis.
Magnification and compression along the voltage axis are
also effective for X-Y plots.
Using the A and B cursors, the X-Y plot can be made for
the data between the A and B cursors.
X-Y DOT, X-Y LINE
Display and record as one graph.
NOTE
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6.6 Using X-Y Waveform Plots
The difference between X-Y DOT and X-Y LINE is whether the linear interpolation is performed or not. (Refer to Section 5.2, "Basic Setting Items of Each Channel- (7) "Line style.")
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Method (on the status "stts" screen)
1
NOTE
(x axis)
(Y axis)
1. Using the CURSOR keys, move the flashing cursor to format.
2. By using the and keys, set to X-Y DOT or X-Y LINE.
On the X-Y DOT and X-Y LINE screens, the following items can be set.
Function Trigger mode Internal trigger Time axis range A B cursors X and Y axes range Input coupling Magnification/compression
along the X and Y axes range
Position
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6.6 Using X-Y Waveform Plots
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.7 Numerical Calculation
For sampled waveform data or for waveform data which is the result of waveform calculation processing, the following types of calculation can be performed:
(1) Maximum values and time to maximum values (2) Minimum values and time to minimum values (3) Peak-to-peak values (4) Mean values (5) Rms values   (6) Area values
The result of each of these types of calculation appears as
a numerical value.
If the A and B cursors are not being used, the calculation
is performed for all of the data. When the cursors are used, the calculation is performed for the data between the A and the B cursors.
The settings relating to the calculation functions are
made on the numerical calculation screen.
On the status (stts) screen
1. Move the flashing cursor to "to-MEASUREMENT", and press the key, the screen changes to the numerical calculation screen. 
2. Move the flashing cursor to
"to-STTS" and press the key, the
status screen will be returned.
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6.7 Numerical Calculation
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Method (on the numerical calculation "measure" screen)
1. Using the CURSOR keys, move the
flashing cursor to measurement.  Set to "ON" by pressing the and keys.
2. Using the CURSOR keys, move the
flashing cursor to print. Select ON or OFF (whether the results of calculation is printed out or not ) by pressing the or keys.
3. Using the CURSOR keys, move the flashing cursor to No.1 to No.4. Select the types of calculation by pressing the and keys. Up to four calculations can be set simultaneously.
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Selection
OFF, MAX, MIN, P-P, MEAN, RMS, AREA
4. Case A When the calculation is performed
simultaneously with the waveform reading. Press the START key.
Case B When the calculation is performed on measurement data that have already been read in. Using the CURSOR keys, move the flashing cursor to (exec). Press the START key.
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6.7 Numerical Calculation
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5. On the waveform screen, the waveform and results of the calculation are displayed together.
NOTE
The results is automatically recorded on the printer when
print setting is ON.
The calculation can be performed as many times as
desired on the reading waveform data.
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6.7 Numerical Calculation
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Details of the various calculations
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(1) Maximum value (Max)
The maximum value of the waveform data is shown (in
volts).
Time to maximum value (Max-Time)
The time period from the moment that triggering
occurred till the maximum value is shown (in seconds).
If the maximum value is attained twice or more in the
data, the first point is took as the maximum value.
(2) Minimum value (Min)
The minimum value of the waveform data is shown (in
volts).
Time to minimum value (Min-Time)
The time period from the moment that triggering
occurred till the minimum value is attained is shown (in seconds).
If the minimum value is attained twice or more in the
data, the first point is took as the minimum value.
(3) Peak-to-peak value
The peak-to-peak value (the difference between the maximum value and the minimum value) of the waveform data is shown (in volts).
(4) Mean value
The average value (in volts) of the waveform data is
shown.
The equation used for the calculation is as follows:
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The mean value  
n: number of data samples
: the ith data value of the source channel
d
i
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6.7 Numerical Calculation
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(5) RMS value
The rms value (in volts) of the waveform data is shown.The equation used for the calculation is as follows:
RMS valu
n: number of data samples
: the ith data value of the source channel
d
i
(6) Area value
The value of the area from the origin position for the
waveform (the point corresponding to 0 V) to the signal waveform is shown in volt-seconds.
If the A and B cursors are in use, the area between A and
B cursors is displayed.
The equation used for the calculation is as follows:
The area valu
n : the number of data samples
: the ith data value of the source channel
d
i
h=Δt: sampling period
NOTE
If scaling has been set, calculation will be executed after scaling the waveform data. (When scaling, the calculation will be slowed down.) The unit of the waveform value is the unit to be set. (Refer to Section 12.4.1,Scaling Function.")
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6.7 Numerical Calculation
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