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
157
159
160
161
162
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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
184
194
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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
Page 9
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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
Page 10
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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
Page 11
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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 thesymbol) 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).
iii
Indicates DC (Direct Current).
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Safety
Page 12
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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
Page 13
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R
e
N
v
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 input500 V DC+AC 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
Page 14
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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 5℃ to 40℃ and 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 9418-10(PSA-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
Page 15
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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.
vii
(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
Page 16
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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
Page 17
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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.
ix
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
Page 18
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112
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ames and Functions of Parts
1
2
1
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
4
3
5
Front View
8
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9
1
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45678
910
112
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.
xi
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
Page 20
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314
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1
Right Side View
1
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
Page 21
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815
5161718
16171
Lower Side View
xiii
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
Page 22
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9
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1
Bottom View
1
Battery compartment
Six LR6 alkaline batteries or the 9420 can be installed.
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Names and Functions of Parts
Page 23
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1
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1
Chapter
Chapter Overvie
.1Product 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.
1
2
3
4
5
6
7
8
9
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1.1 Product Overview
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.2System 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
Page 27
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Analog input units
LCD
Logic inputs
Printer
Total 2 probes
C
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
3
4
5
6
7
8
ontr
pane
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1.2 System Operation
Page 29
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■ Basic specification
2
s
2
2
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1
.1Main 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)
5℃ to 40℃ 35% to 80% RH
(no condensation)
2.1 Main Units Specifications
2
3
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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
Page 31
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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.)
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)
×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
5
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2.1 Main Units Specifications
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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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2.1 Main Units Specifications
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.1.7 Auxiliary
Screen copyAvailable
1
2
Scaling function
Comment input
function
Auto list・gauge
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.
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2.1 Main Units Specifications
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.1.8 A List of Optional Accessories
Accessories
・ 9574 INPUT CORD 2
・ 9232 RECORDING PAPER (roll paper) 1
・ Roll paper attachments 2
・ Instruction 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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2.1 Main Units Specifications
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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.
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2.1 Main Units Specifications
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2.1 Main Units Specifications
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1
.1Setup
(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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3.1 Setup
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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 conditionAlkaline battery
Printer not operating
(waiting for trigger, etc
Approx. 160 minApprox. 90 min
9420 BATTERY
PACK
Printer operating
recorder function
Approx. 90 minApprox. 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 5℃ to 40℃ and 35% to 80% RH. Also, do not
expose the unit to direct sunlight, dust, or corrosive gas.
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3.1 Setup
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Stock cover
r
Holder
Attachments
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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.
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3.2 Loading Recording Paper
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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 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.
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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 40℃ and 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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3.3 Care of Recording Paper
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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
.1Screen 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
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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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4.1 Screen Displays
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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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.3Screen 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
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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
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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
.1Setting 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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5.1 Setting Method
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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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5.1 Setting Method
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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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5.1 Setting Method
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.2Basic 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).
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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5.2 Basic Setting Items of Each Function
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Flashing cursor
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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
Position0 DIV3 DIV6 DIV
511―
Display
Display
Display
0DIV
3DIV
6DIV
T
Yaxis
511
0DIV
3DIV
0DIV
6DIV
Display
3DIV
6DIV
Xaxis
0
256
(0 V)
0
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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5.2 Basic Setting Items of Each Function
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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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5.2 Basic Setting Items of Each 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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.3Starting 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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5.3 Starting and Stopping 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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.4Printer 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
・ 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
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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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.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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.5Zero 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
.1What 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
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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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6.1 What is the Memory Recorder Function?
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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
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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6.1 What is the Memory Recorder Function?
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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.
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4
5
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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.
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, ×1/2Set 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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2
3
4
5
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(3) Trigger screen
1
2
3
4
5
6
Function
Trigger source
AND/OR
Internal trigger
External trigger
Trigger mode
Pre-trigger
Timer trigger
Memory, Record, RMS,
XY CONT, System
AND, ORSet whether the triggers
OFF, LEVEL, OUT,
LOGIC, DIP
OFF, ONUsing of the external
SINGLE, REPEAT, AUTO Select whether to stop
0, 5, 10, 25, 50, 75, 90,
95, 100, -95 %
OFF, ONUsed 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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.3Basic 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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1
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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5
6
7
8
9
10
11
12
Record on the printer
End
―――――――――――――――――――――――――――――――――――
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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(5) Set the waveform display.
1
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.
2
3
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5
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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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.4Auto-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:
5
6
7
8
9
10
11
12
13
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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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.5Roll 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.
1
2
3
4
5
6
7
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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9
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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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.6Using 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
2
3
4
5
6
7
8
9
10
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6.6 Using X-Y Waveform Plots
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.7Numerical 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.
1
2
3
4
5
6
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
1
(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:
2
3
4
5
6
7
8
9
10
11
12
13
14
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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