Hioki U8793 User manual

U8793
MR8790
Instruction Manual
ARBITRARY WAVEFORM
GENERATOR UNIT
WAVEFORM
GENERATOR UNIT
PULSE GENERATOR UNIT
EN
July 2018 Revised edition 2
U8793A981-02 18-07H
MR8791

Contents
i
5 Setting Pulse and
Pattern Output
(MR8791) 29
5.1 Setting the Mode ............................ 29
5.2 Setting the Pulse Mode.................. 30
Setting the frequency..................................30
Setting the duty...........................................31
Setting the output type................................32
Setting output..............................................33
5.3 Setting the Pattern Mode............... 34
Setting the output type................................34
Setting the pattern to use............................35
Method for registering a pattern..................36
Setting the clock frequency.........................38
Setting output..............................................39
6 Sweep Setting (U8793) 41
6.1 Selecting the Sweep Type ............. 41
6.2 Setting the Start Value ................... 42
6.3 Setting the End Value .................... 43
6.4 Setting the Sweep Time................. 44
7 Arbitrary Waveform
Settings (U8793) 45
7.1 Setting the Waveform Type ........... 45
7.2 Registering a Waveform ................ 46
Registering data measured with a
Memory HiCorder .......................................47
Registering data created with the
SF8000 Waveform Maker...........................49
7.3 Setting the Clock Frequency......... 51
7.4 Setting Amplitude Adjustment...... 52
7.5 Setting the Offset ........................... 53
7.6 Setting the Delay ............................ 54
7.7 Setting the Number of Loops
(When Sweep Is Disabled)............. 55
7.8 Setting the Filter............................. 56
7.9 Setting the Output to ON or OFF .. 57
7.10 Setting Behavior When Output
is OFF .............................................. 58
8 Program Settings
(U8793) 59
8.1 Switching to the Program
Settings Screen .............................. 59
8.2 Editing the Program....................... 60
Opening the Edit screen .............................60
Introduction................................................ 1
Verifying Package Contents ..................... 2
Safety Information..................................... 2
Operating Precautions.............................. 5
1 Overview 7
1.1 Features ............................................ 7
1.2 Part Names and Functions.............. 8
1.3 Inspecting the Unit before Use ....... 9
2 Connecting the Unit 11
2.1 Installing the Unit in and
Removing the Unit from
a Memory HiCorder .........................11
Installing the unit......................................... 11
Removing the unit....................................... 11
2.2 Connecting Cables to the
Output Terminals............................ 12
2.3 Output Terminals............................ 13
2.4 Connecting Wires to the
External Control Terminals
(U8793) ............................................ 14
3 Signal Generation
Settings Screen
(Generator Screen) 15
Method for copying and pasting channel
settings .......................................................16
4 FG Waveform Settings
(U8793, MR8790) 17
Method for setting values............................18
4.1 Setting the Waveform Type ........... 20
4.2 Setting the Frequency ................... 21
4.3 Setting the Amplitude .................... 22
4.4 Setting the Offset ........................... 23
4.5 Setting the Duty
(Pulse Wave Output Only) ............. 24
4.6 Setting the Phase ........................... 25
4.7 Setting the Output to ON or OFF .. 26
4.8 Setting Behavior When Output
is OFF .............................................. 27
Contents
U8793A981-02
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Contents
ii
Conguring each step.................................61
Ending program editing...............................63
8.3 Setting the Overall Number of
Loops .............................................. 65
8.4 Setting the Filter............................. 66
8.5 Saving the Edited Program ........... 67
8.6 Checking Program Progress......... 68
9 Outputting Signals 69
9.1 Setting the Control Method ........... 69
9.2 Setting Output When
Measurement Completes............... 70
9.3 Controlling Signal Output ............. 71
10 ConguringSettingson
the Waveform Screen 73
10.1 Setting Output Waveform
Parameters...................................... 73
To display the waveform and output
parameter settings in separate windows ....74
10.2 Waveform Type and Output
Status Display ................................ 76
11 Self-test Function 77
11.1 Monitoring Output Values with
Test Output ..................................... 77
12 External Output
Terminal (U8793) 81
12.1 External Input ................................. 82
12.2 External Output .............................. 83
13 Waveform Maker 85
13.1 Overview of the SF8000
Waveform Maker............................. 85
Operating environment ...............................85
Functional specications.............................85
13.2 Installing the SF8000 Application . 87
13.3 Launching and Exiting the
SF8000 Application ........................ 89
Launching the application ...........................89
Exiting the application.................................90
13.4 Uninstalling the SF8000
Application...................................... 91
13.5 SF8000 Screen................................ 92
Setting the display format ...........................93
Setting the time axis range .........................94
Input mode screens ...................................94
13.6 Arbitrary Waveform Input Mode.... 96
Basic instructions........................................96
Editing mode...............................................97
Waveform creation......................................98
Properties .................................................100
Calculations using previously input
waveforms ................................................101
13.7 Function Input Mode.................... 102
Basic instructions......................................102
Example of program creation....................102
Expressions and operations .....................103
Control words............................................104
Functions ..................................................106
Usable characters.....................................109
13.8 Step Input Mode ............................110
Basic instructions...................................... 110
Example of waveform creation ................. 110
Start and end point settings ...................... 110
Waveform type and settings ..................... 110
Editing steps ............................................. 111
Reordering the display.............................. 111
13.9 Interpolation Input Mode ..............112
Basic instructions...................................... 112
Editing mode............................................. 114
Dot data list............................................... 114
Interpolation method ................................. 116
13.10Pulse Pattern Mode.......................117
Basic instructions...................................... 117
Example of waveform creation ................. 118
13.11 Transferring Data ..........................119
13.12Saving and Loading Data ............ 120
Saving and loading all data.......................120
Saving and loading data for an
individual input mode (import, export).......121
14 Specications 123
14.1 U8793 Arbitrary Waveform
Generator Unit .............................. 123
General specications ..............................123
Output specications ................................123
Sweep function specications...................125
Program functional specications .............125
Other specications ..................................125
14.2 MR8790 Waveform Generator
Unit ................................................ 126
General specications ..............................126
Voltage output specications ....................127
14.3 MR8791 Pulse Generator Unit..... 128
General specications ..............................128
Pulse output specications .......................129
Pattern output specications.....................129
Output connector specications................129

Contents
iii
15 Maintenance and
Service 131
15.1 Cleaning the Unit.......................... 131
15.2 Troubleshooting ........................... 132
15.3 Error Messages ............................ 133
Index Ind.1
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Ind.
15
14
13
12
10
11

Contents
iv

1
Introduction
Thank you for purchasing the Hioki U8793 Arbitrary Waveform Generator Unit, MR8790 Waveform
Generator Unit and MR8791 Pulse Generator Unit. To obtain maximum performance from the unit, please
read this manual rst, and keep it handy for future reference.
Trademarks
Microsoft, Windows and Excel are either registered trademarks or trademarks of Microsoft Corporation in
the United States and other countries.
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Verifying Package Contents
Verifying Package Contents
When you receive the unit, inspect it carefully to ensure that no damage occurred during shipping.
In particular, check the connectors. If damage is evident, or if it fails to operate according to the
specications, contact your authorized Hioki distributor or reseller.
Store the packaging in which the unit was delivered, as you will need it when transporting the unit.
Safety Information
This unit is designed to conform to IEC 61010 Safety Standards, and has been thoroughly tested for
safety prior to shipment. However, using the unit in a way not described in this manual may negate the
provided safety features.
Before using the unit, be certain to carefully read the following safety notes.
DANGER
Mishandling during use could result in injury or death, as well as damage to
the unit. Be certain that you understand the instructions and precautions in the
manual before use.
WARNING
With regard to the electricity supply, there are risks of electric shock, heat
generation, re, and arc discharge due to short circuits. If persons unfamiliar
with electrical measuring instrument are to use the instrument, another person
familiar with such instruments must supervise operations.

3
Safety Information
Notations
In this manual, the risk seriousness and the hazard levels are classied as follows.
DANGER Indicates an imminently hazardous situation that will result in death or serious injury to
the operator.
WARNING Indicates a potentially hazardous situation that may result in death or serious injury to
the operator.
CAUTION Indicates a potentially hazardous situation that may result in minor or moderate injury
to the operator or damage to the unit or malfunction.
IMPORTANT Indicates information related to the operation of the unit or maintenance tasks with
which the operators must be fully familiar.
Indicates a high voltage hazard.
If a particular safety check is not performed or the unit is mishandled, this may give
rise to a hazardous situation; the operator may receive an electric shock, may get
burnt or may even be fatally injured.
Indicates a prohibited action.
Indicates the action which must be performed.
(p. ) Indicates the location of reference information.
CURSOR
(bold)
Bold alphanumeric characters in this text show characters appeared on the operation
keys.
[ ] Menus, commands, dialogs, buttons in a dialog, and other names on the screen are
indicated in brackets.
*Additional information is presented below.
Symbols on the unit
Indicates cautions and hazards. When the symbol is printed on the unit, refer to a
corresponding topic in the Instruction Manual.
Indicates a fuse.
Indicates a grounding terminal.
Indicates DC (Direct Current).
Indicates AC (Alternating Current).
Symbols for standards
Indicates that the product conforms to regulations set out by the EC Directive. 10
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Safety Information
Accuracy
We dene output tolerances in terms of setting values, with the following meanings:
Setting Indicates the value set as the output voltage, current, or other quantity.
Measurement categories
To ensure safe operation of measuring instruments, IEC 61010 establishes safety standards
for various electrical environments, categorized as CAT II to CAT IV, and called measurement
categories.
DANGER
•Using a measuring instrument in an environment designated with a higher-
numbered category than that for which the instrument is rated could result in a
severe accident, and must be carefully avoided.
•Using a measuring instrument without categories in an environment designated
with the CAT II to CAT IV category could result in a severe accident, and must
be carefully avoided.
CAT II: When directly measuring the electrical outlet receptacles of the primary electrical
circuits in equipment connected to an AC electrical outlet by a power cord (portable
tools, household appliances, etc.).
CAT III: When measuring the primary electrical circuits of heavy equipment (xed installations)
connected directly to the distribution panel, and feeders from the distribution panel to
outlets.
CAT IV: When measuring the circuit from the service drop to the service entrance, and to the
power meter and primary overcurrent protection device (distribution panel).
T
Outlet
CAT II
Internal wiring
Service entrance
Service drop
CAT IV
Power meter
CAT III
Fixed installation
Distribution panel

5
Operating Precautions
Operating Precautions
Check before use
Follow these precautions to ensure safe operation and to obtain the full benets of the various
functions.
DANGER
If the connecting cable or the unit is damaged, there is a risk of electric shock.
Before using the unit perform the following inspection.
•Before using the unit, make sure that the insulation on the cables are
undamaged and that no bare conductors are improperly exposed. If there is any
damage on the cable, replace it with those specied by our company.
•Before using the unit for the rst time, verify that it operates normally to ensure
that no damage occurred during storage or shipping. If you nd any damage,
contact your authorized Hioki distributor or reseller.
Unit installation
WARNING
Installing the unit in inappropriate locations may cause a malfunction of unit or
may give rise to an accident. Avoid the following locations.
•Exposed to direct sunlight or high temperature
•Exposed to corrosive or combustible gases
•Exposed to a strong electromagnetic eld or electrostatic charge
•Near induction heating systems (such as high-frequency induction heating
systems and IH cooking equipment)
•Susceptible to vibration
•Exposed to water, oil, chemicals, or solvents
•Exposed to high humidity or condensation
•Exposed to high quantities of dust particles
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Operating Precautions
Handling of the unit
DANGER
•Do not exceed the unit or cable ratings or specications range.
•To avoid electric shock, do not remove the unit's case.
The internal components of the unit carry high voltages and may become very
hot during operation.
WARNING
•To avoid electric shock accident, before removing or replacing the unit, conrm
that the Memory HiCorder is turned off and that the connection cables are
disconnected.
•To avoid the danger of electric shock, never operate the MEMORY HiCORDER
with the unit removed. Install a blank panel in the Memory HiCorder after
removing the unit.
•To avoid damage to the unit or electric shock accident, use original screws
from the factory shipment for fastening the unit.
If any of the screws is lost or there is any damage on the unit, contact your
authorized Hioki distributor or reseller.
CAUTION
•To avoid damage to the unit, do not touch the connectors to be inserted into the
Memory HiCorder.
•Do not perform measurements when the blank panel of the Memory HiCorder has
been removed. This condition will cause unstable temperature in the unit and does
will not satisfy the specications.
•To avoid damage to the unit, protect it from physical shock when transporting and
handling. Be especially careful to avoid physical shock from dropping.
• The mounting screws must be rmly tightened or the unit may not perform to
specications, or may even fail.
This unit may cause interference if used in residential areas. Such use must be avoided unless
the user takes special measures to reduce electromagnetic emissions to prevent interference to
the reception of radio and television broadcasts.
Precautions during transportation
Store the packaging in which the unit was delivered, as you will need it when transporting the unit.

7
1Overview
1.1 Features
The U8793, MR8790, and MR8791 are Memory HiCorder units designed to output basic waveforms
such as sine waves and rectangular waves, user-created waveforms, logic patterns, and other
signals. (Models vary by the type of waveform they can output.) Since a single Memory HiCorder
can accommodate the U8793, MR8790, or MR8791 along with one or more measurement units, it
is possible to both measure and generate waveforms with one instrument.
U8793 Arbitrary Waveform Generator Unit
Isolated-channel
output
Each unit provides two channels of output. Since output channels are
isolated from the host Memory HiCorder’s chassis as well as from each
other, the instrument can be connected to other devices that operate at
a different potential. (The maximum rated terminal-to-ground voltage is
limited to 33 V AC RMS or 70 V DC.)
Maximum output
voltage of 15 V
The unit can output up to 15 V. This capability eliminates the need to
connect the unit’s output to an external amplier prior to simulating
a signal from an automotive sensor or other device, enabling output
signals to be applied directly.
Channel synchronization Phase can be set between channels on the same unit and between
channels on different units.
Sweep functionality Sweep functionality is provided for frequency, amplitude, offset, and
duty (pulse waves only) for FG waveforms and arbitrary waveforms.
Program function
Up to 128 steps can be combined to create output sequences. Users
can set an output waveform (FG waveform, sweep waveform, or
arbitrary waveform) and a loop count for each step.
Observed
waveform output
The unit can load waveform data measured by the Memory HiCorder
and then output a waveform that is identical to the observed waveform,
enabling use in applications such as reproduction testing.
MR8790 Waveform Generator Unit
Isolated-channel
output
Each unit provides four channels of output. Since output channels are
isolated from the host Memory HiCorder’s chassis as well as from each
other, the instrument can be connected to other devices that operate at
a different potential. (The maximum rated terminal-to-ground voltage is
limited to 33 V AC RMS or 70 V DC.)
High-precision
DC output
Thanks to its ability to generate high-precision DC output with an output
accuracy of ±0.6 mV, the MR8790 can generate output simulating the
minuscule voltage variations of sensor output.
MR8791 Pulse Generator Unit
Multichannel
output
Each unit provides eight channels of output. Output channels are
isolated from the host Memory HiCorder’s chassis. (Output channels
are not isolated from each other.) (The maximum rated terminal-to-
ground voltage is limited to 33 V AC RMS or 70 V DC.)
Wide selection
of output modes
Depending on the conguration, each channel can generate
independent pulse output, or all channels can generate synchronized
pattern output. In addition, users can select either TTL level logic output
or open-collector output as the output type (for each channel).
1 Overview
1
Overview

8
Part Names and Functions
1.2 Part Names and Functions
Front (U8793)
Output indicators
Indicators turn red during
waveform output.
Output terminals (p. 6)
External control terminals (p. 6)
Front (MR8790)
Output terminals (p. 6)
Front (MR8791)
Output connector (p. 6)

9
Inspecting the Unit before Use
1.3 Inspecting the Unit before Use
Before using the unit, inspect it to ensure that it did not sustain any damage during storage or
transport and that it is operating properly. If you discover any damage, contact your authorized
Hioki distributor or reseller.
(1) Inspecting connection cables
Is the insulation on the connection cable
damaged, or is any metal exposed?
Yes Do not use the unit as cable damage
may result in electric shock. Have the
unit repaired.
No
Proceed to (2).
(2) Inspecting the unit
Is the unit damaged?
Yes
If the unit is damaged, have it repaired.
No
When turning on the instrument
Can you select the [Generator] tab when you
press (CHAN)?
Not displayed One or more of the unit’s internal
components may be damaged. Have it
repaired.
Yes
Inspection complete
1
Overview

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Inspecting the Unit before Use

11
2Connecting the Unit
2.1 Installing the Unit in and Removing the Unit
from a Memory HiCorder
For more information about how to install the unit, see the Memory HiCorder’s instruction manual.
You will need: Phillips head screwdriver (No. 2)
Installing the unit
Example: U8793
1
Turn off the Memory HiCorder into which
you will install the unit.
2
Exercising care to orient the unit properly,
insert it rmly as far as it will go.
Orient the unit so that the lettering on its front faces
the same direction as the lettering on the host
Memory HiCorder.
3
Securely tighten the fastening screws on
the unit with the Phillips head screwdriver.
Removing the unit
Example: U8793
Handles
1
Turn off the Memory HiCorder from which
you will remove the unit.
2
Disconnect all connection cables,
thermocouples, and other devices that are
connected to the unit.
3
Loosen the fastening screws on the unit
with the Phillips head screwdriver.
4
Gripping the handles, pull the unit towards
you.
5
Attach the blank panel to cover the
opening on the Memory HiCorder from
which you removed the unit.
2 Connecting the Unit
2
Connecting the Unit

12
Connecting Cables to the Output Terminals
2.2 Connecting Cables to the Output Terminals
Be sure to use only Hioki-specied connection cables with the unit. Use of other cables may
prevent the unit from generating waveforms accurately due to poor contact or other issues.
U8793 and MR8790
You will need: L9795-01 Connection Cable or L9795-02 Connection Cable
Example: U8793
Output terminals
SMB connector
Connecting connection cables
Connect to target device.
Output terminal
1
Insert the connection cable’s SMB connector
into the unit’s output terminal until you hear it
click into place.
2
Connect the target device to the clip side of
the connection cable.
Disconnecting cables from the output
terminals
Grip the cable by the SMB connector (not the
cable itself) and pull toward you to disconnect the
cable.

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Output Terminals
MR8791
You will need: Connection cable
Output connector
Output connector
Connecting the connection cable
Connect to measurement target.
Connection cable connector
1
Connect the connection cable’s connector to
the unit’s output connector.
2
Connect the connection cable to the device
being measured.
To disconnect the cable from the output
terminal
Pull the connection cable’s connector toward you
while depressing the buttons on the connector to
disconnect the cable.
Buttons
2.3 Output Terminals
WARNING
The allowable load resistance for the unit’s analog output terminals is 1.5 kΩ
or greater (U8793) or 2 kΩor greater (MR8790). Do not connect a load whose
resistance is less than the allowable load resistance or short the unit’s outputs.
Doing so may damage the unit or cause a re.
CAUTION
Do not apply a voltage from outside the device to the analog output terminals. Doing so
may damage the unit.
2
Connecting the Unit

14
Connecting Wires to the External Control Terminals (U8793)
2.4 Connecting Wires to the External Control
Terminals (U8793)
The following describes how to connect wires to the unit’s external control terminals.
Procedure
You will need
Single-strand wire
Stranded wire
10 mm
Compatible wires: Single-strand wire φ0.65 mm (22 AWG)
Twisted wire 0.32 mm2(22 AWG)
Usable wire: Single-strand wire φ0.32 to φ0.65 mm (28 to 22 AWG)
Stranded wire 0.08 to 0.32 mm2(28 to 22 AWG)
Strand diameter φ0.12 mm (per strand)
Standard stripped wire length: 9 to 10 mm
Tool for manipulating terminal buttons: Flat-head screwdriver (with a shaft
diameter of φ3 mm and a tip width of 2.6 mm)
Connection method
1
2
3
1
Depress the terminal button with a
athead screwdriver or other tool.
2
Insert the wire into the wire connection
hole while continuing to depress the
button.
3
Release the button.
The wire will be locked in place.
Terminal
no. Operation
1 OUT: Outputs a LOW-level signal during
waveform output.
2 IN: When using the program function,
inputting a LOW-level signal from an
external device will cause the unit to cancel
the hold state and transition to the next
step.
3 GND terminal
(same potential as the Memory HiCorder’s
GND)