I-Tech IT8600 Series User manual

Programmable AC/DC
Electronic Load
User Manual for IT8600 Series
Model: IT8615/IT8615L/IT8616/IT8617/
IT8624/IT8625/IT8626/IT8627/IT8628
Version: V2.7
ООО "Техэнком" Контрольно-измерительные приборы и оборудование www.tehencom.com

Notices
© Itech Electronic, Co., Ltd. 2019
No part of this manual may be
reproduced in any form or by any means
(including electronic storage and
retrieval or translation into a foreign
language) without prior permission and
written consent from Itech Electronic,
Co., Ltd. as governed by international
copyright laws.
Manual Part Number
IT8600-402247
Revision
2nd Edition: Mar. 7, 2019
Itech Electronic, Co., Ltd.
Trademarks
Pentium is U.S. registered trademarks
of Intel Corporation.
Microsoft, Visual Studio, Windows and
MS Windows are registered trademarks
of Microsoft Corporation in the United
States and/or other countries and
regions.
Warranty
The materials contained in this
document are provided “as is”, and
is subject to change, without prior
notice, in future editions. Further, to
the maximum extent permitted by
applicable laws, ITECH disclaims
all warrants, either express or
implied, with regard to this manual
and any information contained
herein, including but not limited to
the implied warranties of
merchantability and fitness for a
particular purpose. ITECH shall not
be held liable for errors or for
incidental or indirect damages in
connection with the furnishing, use
or application of this document or of
any information contained herein.
Should ITECH and the user enter
into a separate written agreement
with warranty terms covering the
materials in this document that
conflict with these terms, the
warranty terms in the separate
agreement shall prevail.
Technology Licenses
The hardware and/or software described
herein are furnished under a license and
may be used or copied only in
accordance with the terms of such
license.
Restricted Rights Legend
Restricted permissions of the U.S.
government. Permissions for software
and technical data which are authorized
to the U.S. Government only include
those for custom provision to end users
ITECH provides this customary
commercial license in software and
technical data pursuant to FAR 12.211
(Technical Data) and 12.212 (Computer
Software) and, for the Department of
Defense, DFARS 252.227-7015
(Technical Data –Commercial Items)
and DFARS 227.7202-3 (Rights in
Commercial Computer Software or
Computer Software Documentation).
Safety Notices
A CAUTION sign denotes a
hazard.
It calls attention to an operating
procedure or practice that, if not
correctly performed or adhered
to, could result in damage to the
product or loss of important data.
Do not proceed beyond a
CAUTION sign until the
indicated conditions are fully
understood and met.
A WARNING sign denotes a
hazard. It calls attention to an
operating procedure or practice
that, if not correctly performed
or adhered to, could result in
personal injury or death. Do not
proceed beyond a WARNING
sign until the indicated
conditions are fully understood
and met.
NOTE
A NOTE sign denotes important
hint. It calls attention to tips or
supplementary information that
is essential for users to refer to.
ООО "Техэнком" Контрольно-измерительные приборы и оборудование www.tehencom.com

IT8600 User Manual
Copyright © ITECH Electronic Co., Ltd. i
Quality Certification and Assurance
We certify that IT8600 electronic load meets all the published specifications.
Warranty ITECH warrants that the product will be free from defects in material and
workmanship under normal use for a period of one (1) year from the date of
delivery (except those described in the Limitation of Warranty below).
For warranty service or repair, the product must be returned to a service center
designated by ITECH.
⚫The product returned to ITECH for warranty service must be shipped
PREPAID. And ITECH will pay for return of the product to customer.
⚫If the product is returned to ITECH for warranty service from overseas, all
the freights, duties and other taxes shall be on the account of customer.
Limitation of Warranty
This Warranty will be rendered invalid if the product is:
⚫Damage caused by circuit installed by customer or using customer own
products or accessories;
⚫Modified or repaired by customer without authorization;
⚫Damage caused by circuit installed by customer or not operating our
products under designated environment;
⚫The product model or serial number is modified, deleted, removed or
illegible;
⚫Damaged as a result of accidents, including but not limited to lightning,
moisture, fire, improper use or negligence.
Safety Symbols
Direct current
ON (power on)
Alternating current
OFF (power off)
Both direct and alternating
current
Power-on state
Protective conductor terminal
Power-off state
Earth (ground) terminal
Reference terminal
Caution, risk of electric shock
Positive terminal
Warning, risk of danger (refer
to this manual for specific
Warning or Caution
information)
Negative terminal
ООО "Техэнком" Контрольно-измерительные приборы и оборудование www.tehencom.com

IT8600 User Manual
Copyright © ITECH Electronic Co., Ltd. ii
Frame or chassis terminal
-
-
Safety Precautions
The following safety precautions must be observed during all phases of
operation of this instrument. Failure to comply with these precautions or specific
warnings elsewhere in this manual will constitute a default under safety
standards of design, manufacture and intended use of the instrument. ITECH
assumes no liability for the customer’s failure to comply with these precautions.
⚫Do not use the instrument if it is damaged. Before operation, check the
casing to see whether it cracks. Do not operate the instrument in the
presence of inflammable gasses, vapors or dusts.
⚫The instrument is provided with a power cord during delivery and should be
connected to a socket with a protective earth terminal, a junction box or a
three-phase distribution box. Before operation, be sure that the instrument
is well grounded.
⚫Make sure to use the power cord supplied by ITECH.
⚫Check all marks on the instrument before connecting the instrument to
power supply.
⚫Use electric wires of appropriate load. All loading wires should be capable
of bearing maximum short-circuit of electronic load without overheating. If
there are multiple loads, each pair of the load power cord must be carry out
the full rated short-circuit output current of the power securely.
⚫Ensure the voltage fluctuation of mains supply is less than 10% of the
working voltage range in order to reduce risks of fire and electric shock.
⚫Do not install alternative parts on the instrument or perform any
unauthorized modification.
⚫Do not use the instrument if the detachable cover is removed or loose.
⚫To prevent the possibility of accidental injuries, be sure to use the power
adapter supplied by the manufacturer only.
⚫We do not accept responsibility for any direct or indirect financial damage
or loss of profit that might occur when using the instrument.
⚫This instrument is used for industrial purposes, Do not apply this product to
IT power supply system.
⚫Never use the instrument with a life-support system or any other equipment
subject to safety requirements.
⚫SHOCK HAZARD Ground the Instrument. This product is provided with a
protective earth terminal. To minimize shock hazard, the instrument must
be connected to the AC mains through a grounded power cable, with the
ground wire firmly connected to an electrical ground (safety ground) at the
power outlet or distribution box. Any interruption of the protective
(grounding) conductor or disconnection of the protective earth terminal will
cause a potential shock hazard that could result in injury or death.
ООО "Техэнком" Контрольно-измерительные приборы и оборудование www.tehencom.com

IT8600 User Manual
Copyright © ITECH Electronic Co., Ltd. iii
⚫Before applying power, verify that all safety precautions are taken. All
connections must be made with the instrument turned off, and must be
performed by qualified personnel who are aware of the hazards involved.
Improper actions can cause fatal injury as well as equipment damage.
⚫SHOCK HAZARD, LETHAL VOLTAGES This product can input the
dangerous voltage that can cause personal injury, and the operator must
always be protected from electric shock. Ensure that the input electrodes
are either insulated or covered using the safety covers provided, so that no
accidental contact with lethal voltages can occur.
⚫Never touch cables or connections immediately after turning off the
instrument. Verify that there is no dangerous voltage on the electrodes or
sense terminals before touching them.
⚫Failure to use the instrument as directed by the manufacturer may render
its protective features void.
⚫Always clean the casing with a dry cloth. Do not clean the internals.
⚫Make sure the vent hole is always unblocked.
Environmental Conditions
The instrument is designed for indoor use and an area with low condensation.
The table below shows the general environmental requirements for the
instrument. The speed of fan will change intelligently by the temperature of
radiator. When the temperature is up to 40°C, the fan will be on and adjust
intelligently when temperature changes.
Environmental Conditions
Requirements
Operating temperature
0°C to 40°C
Operating humidity
20%-80% (non-condensation)
Storage temperature
-20°C to 70 °C
Altitude
≤2,000m
Pollution degree
Pollution degree 2
Installation category
Ⅱ
NOTE
To make accurate measurements, allow the instrument to warm up for 30 min before
operation.
Regulatory Markings
The CE mark is a registered trademark of
the European Community. This CE mark
shows that the product complies with all the
relevant European Legal Directives.
The instrument complies with the WEEE
Directive (2002/96/EC) marking
requirement. This affixed product label
indicates that you must not discard the
electrical/electronic product in domestic
household waste.
ООО "Техэнком" Контрольно-измерительные приборы и оборудование www.tehencom.com

IT8600 User Manual
Copyright © ITECH Electronic Co., Ltd. iv
This symbol indicates the time period during
which no hazardous or toxic substances are
expected to leak or deteriorate during normal
use. The expected service life of the product
is 10 years. The product can be used safely
during the 10-year Environment Friendly
Use Period (EFUP). Upon expiration of the
EFUP, the product must be immediately
recycled.
Waste Electrical and Electronic Equipment (WEEE)
Directive
2002/96/EC Waste Electrical and Electronic Equipment
(WEEE) Directive
This product complies with the WEEE Directive (2002/96/EC)
marking requirement. This affix product label indicates that you
must not discard the electrical/electronic product in domestic
household waste.
Product Category
With reference to the equipment classifications described in the
Annex I of the WEEE Directive, this instrument is classified as a
“Monitoring and Control Instrument” product.
To return this unwanted instrument, contact your nearest ITECH
office.
ООО "Техэнком" Контрольно-измерительные приборы и оборудование www.tehencom.com

IT8600 User Manual
Copyright © ITECH Electronic Co., Ltd. v
Compliance Information
Complies with the essential requirements of the following applicable European
Directives, and carries the CE marking accordingly:
⚫Electromagnetic Compatibility (EMC) Directive 2014/30/EU
⚫Low-Voltage Directive (Safety) 2014/35/EU
Conforms with the following product standards:
EMC Standard
IEC 61326-1:2012/ EN 61326-1:2013 ¹²³
Reference Standards
CISPR 11:2009+A1:2010/ EN 55011:2009+A1:2010 (Group 1, Class A)
IEC 61000-4-2:2008/ EN 61000-4-2:2009
IEC 61000-4-3:2006+A1:2007+A2:2010/ EN 61000-4-3:2006+A1:2008+A2:2010
IEC 61000-4-4:2004+A1:2010/ EN 61000-4-4:2004+A1:2010
IEC 61000-4-5:2005/ EN 61000-4-5:2006
IEC 61000-4-6:2008/ EN 61000-4-6:2009
IEC 61000-4-11:2004/ EN 61000-4-11:2004
1. The product is intended for use in non-residential/non-domestic environments. Use of the
product in residential/domestic environments may cause electromagnetic interference.
2. Connection of the instrument to a test object may produce radiations beyond the specified
limit.
3. Use high-performance shielded interface cable to ensure conformity with the EMC standards
listed above.
Safety Standard
IEC 61010-1:2010/ EN 61010-1:2010
ООО "Техэнком" Контрольно-измерительные приборы и оборудование www.tehencom.com

IT8600 User Manual
Copyright © ITECH Electronic Co., Ltd. vi
Contents
Quality Certification and Assurance.............................................................................................................i
Warranty.......................................................................................................................................................i
Limitation of Warranty..................................................................................................................................i
Safety Symbols............................................................................................................................................i
Safety Precautions......................................................................................................................................ii
Environmental Conditions..........................................................................................................................iii
Regulatory Markings..................................................................................................................................iii
Waste Electrical and Electronic Equipment (WEEE) Directive..................................................................iv
Compliance Information..............................................................................................................................v
Chapter1 Inspection and Installation............................................................................................... 1
1.1 Verifying the Shipment......................................................................................................................... 1
1.2 Instrument Size Introduction................................................................................................................ 1
1.3 Connecting the Power Cord................................................................................................................. 9
1.4 Connecting Test Lines ........................................................................................................................11
Chapter2 Quick Start....................................................................................................................... 13
2.1 Brief Introduction................................................................................................................................ 13
2.2 Front Panel Introduction .................................................................................................................... 14
2.3 Key Introduction................................................................................................................................. 14
2.4 Introduction to Information on the Interface....................................................................................... 16
2.5 Introduction to Interface Symbols...................................................................................................... 16
2.6 Rear Panel Introduction..................................................................................................................... 17
2.7 Power-on Self-test............................................................................................................................. 20
Chapter3 Basic Operations ............................................................................................................ 24
3.1 Input On/Off Control........................................................................................................................... 24
3.2 Key Lock Function ............................................................................................................................. 24
3.3 Menu Configuration Function............................................................................................................. 24
3.4 Configuration Save/Recall................................................................................................................. 26
3.5 Screen Capture Function................................................................................................................... 27
3.6 Local/Remote Switching Function ..................................................................................................... 27
3.7 Load Switching .................................................................................................................................. 27
3.8 Operating Mode................................................................................................................................. 27
3.9 Data Recording Function................................................................................................................... 28
3.10 Online Load Setting ......................................................................................................................... 28
3.11 Timing Mode..................................................................................................................................... 28
3.12 Protection Function.......................................................................................................................... 29
3.13 Remote Measurement Function ...................................................................................................... 32
3.14 External On/Off Control ................................................................................................................... 33
3.15 External Analog Quantity Control (Only for IT8615 /IT8615L)......................................................... 33
3.16 Voltage/Current Monitoring (I/V Monitor)......................................................................................... 33
3.17 Parallel Function.............................................................................................................................. 33
3.18 Three-phase Function...................................................................................................................... 38
3.19 Three-phase Parallel Function......................................................................................................... 43
3.20 Three-phase setup........................................................................................................................... 45
Chapter4 Load Functions ............................................................................................................... 47
4.1 Load Function Introduction................................................................................................................ 47
4.2 AC Load Function .............................................................................................................................. 47
4.2.1 CF and PF Setting....................................................................................................................... 47
4.2.2 Constant Current Mode (CC)...................................................................................................... 48
4.2.3 Constant Resistance Mode (CR)................................................................................................ 52
4.2.4 Constant Power Mode (CP)........................................................................................................ 53
4.3 DC Load Function.............................................................................................................................. 56
4.3.1 Constant Current Mode (CC)...................................................................................................... 56
4.3.2 Constant Resistance Mode (CR)................................................................................................ 57
4.3.3 Constant Voltage Mode (CV) (Only for IT8615/IT8615L) ........................................................... 57
4.3.4 Constant Power Mode (CP)........................................................................................................ 57
4.3.5 Short Circuit Simulation Function ............................................................................................... 57
Chapter5 Measurement Functions................................................................................................. 59
ООО "Техэнком" Контрольно-измерительные приборы и оборудование www.tehencom.com

IT8600 User Manual
Copyright © ITECH Electronic Co., Ltd. vii
5.1 Interface Introduction......................................................................................................................... 59
5.2 Parameter Measurement................................................................................................................... 59
5.2.1 AC Mode ..................................................................................................................................... 60
5.2.2 DC Mode..................................................................................................................................... 62
Chapter6 Waveform Display Function........................................................................................... 65
6.1 Interface Introduction......................................................................................................................... 65
6.2 Adjustment of Measurement Parameters.......................................................................................... 68
6.3 Setting of Trigger Configuration......................................................................................................... 68
Chapter7 Harmonic Measurement Function................................................................................. 70
7.1 Overview............................................................................................................................................ 70
7.2 Setting of Harmonic Measurement Configuration ............................................................................. 72
Chapter8 Routine Maintenance...................................................................................................... 74
8.1 Error Information Reference.............................................................................................................. 74
8.2 Routine Maintenance......................................................................................................................... 75
8.3 Contact ITECH Engineer ................................................................................................................... 76
8.4 Return for Repair ............................................................................................................................... 77
Chapter9 Communication Interfaces............................................................................................. 79
9.1 USB Interface .................................................................................................................................... 79
9.2 GPIB Interface ................................................................................................................................... 79
9.3 LAN Interface..................................................................................................................................... 79
Chapter10 Technical Specifications ................................................................................................ 80
10.1 Main Technical Specifications.......................................................................................................... 80
10.2 Supplemental characteristics........................................................................................................... 94
Appendix .................................................................................................................................................... 95
Specifications of Red and Black Test Lines............................................................................................. 95
ООО "Техэнком" Контрольно-измерительные приборы и оборудование www.tehencom.com

Copyright © ITECH Electronic Co., Ltd. 1
Chapter1 Inspection and Installation
1.1 Verifying the Shipment
Unpack the box and check the contents before operating the instrument. If
wrong items have been delivered, if items are missing, or if there is a defect with
the appearance of the items, contact the dealer from which you purchased the
instrument immediately. The package contents include:
Checklist of Package Contents
Item
Qty.
Model
Remarks
Programmable
AC/DC load
x1
IT8600 series
IT8600 series including:
IT8615/IT8615L/IT8616/IT8617
/IT8624/IT8625/IT8626/IT8627
/IT8628
Power cord
x1
IT-E171/IT-E172/
IT-E173/IT-E174
User may select an appropriate
power cord that matches the
specifications of power socket used
in the area. See the Section 1.3
Connecting the Power Cord.
Test leads
-
-
The test leads are not the standard
accessories for IT8615 and
IT8615L.
USB cable
x1
-
-
CD
x1
-
It contains IT8600 electronic load
User’s Manual, Programming Guide
and other user documentations.
Ex-factory
Test Report
x1
-
It is the test report of the instrument
before delivery.
NOTE
Upon verification of the shipment, keep the package and relevant contents thereof in a
safe place. When returning the instrument for warranty service or repair, the specified
packing requirements shall be met.
1.2 Instrument Size Introduction
The instrument should be installed at well-ventilated and rational-sized space.
Please select appropriate space for installation based on the electronic load
size.
IT8616 and IT8617 have two sizes, including side plate structure and 15U
cabinet. Besides, the 15U cabinet of IT8617 also has two types: one consists of
one master and two slaves and the other consists of three masters. You can
choose according to your requirement.
ООО "Техэнком" Контрольно-измерительные приборы и оборудование www.tehencom.com

Copyright © ITECH Electronic Co., Ltd. 2
IT8615/IT8615L
Dimension:
Width: 482.50mm
Height: 151.35mm
Depth: 600.60mm
Detailed Dimension Drawing
IT8616 (side plate structure)
Dimension:
Width: 483.00mm
Height: 348.99mm
Depth: 641.08mm
ООО "Техэнком" Контрольно-измерительные приборы и оборудование www.tehencom.com

Copyright © ITECH Electronic Co., Ltd. 3
Detailed Dimension Drawing
IT8616 (15U cabinet)
Dimension:
Width: 550.00mm
Height: 801.40mm
Depth: 839.10mm
ООО "Техэнком" Контрольно-измерительные приборы и оборудование www.tehencom.com

Copyright © ITECH Electronic Co., Ltd. 4
Detailed Dimension Drawing
IT8617 (side plate structure)
Dimension:
Width:483.00mm
Height:482.34mm
Depth:641.08mm
Detailed Dimension Drawing
ООО "Техэнком" Контрольно-измерительные приборы и оборудование www.tehencom.com

Copyright © ITECH Electronic Co., Ltd. 5
IT8617 (15U cabinet: one master and two slaves)
Dimension:
Width: 550.00mm
Height: 801.40mm
Depth: 839.10mm
Detailed Dimension Drawing
ООО "Техэнком" Контрольно-измерительные приборы и оборудование www.tehencom.com

Copyright © ITECH Electronic Co., Ltd. 6
IT8617 (15U cabinet: three masters)
Dimension:
Width: 550.00mm
Height: 801.40mm
Depth: 839.10mm
Detailed Dimension Drawing
ООО "Техэнком" Контрольно-измерительные приборы и оборудование www.tehencom.com

Copyright © ITECH Electronic Co., Ltd. 7
IT8624/IT8625/IT8626
Dimension:
Width: 600.00mm
Height: 1441.51mm
Depth: 841.10mm
Detailed Dimension Drawing
ООО "Техэнком" Контрольно-измерительные приборы и оборудование www.tehencom.com

Copyright © ITECH Electronic Co., Ltd. 8
IT8627/IT8628
Dimension:
Width: 600.00mm
Height: 1886.06mm
Depth: 841.10mm
Detailed Dimension Drawing
ООО "Техэнком" Контрольно-измерительные приборы и оборудование www.tehencom.com

Copyright © ITECH Electronic Co., Ltd. 9
1.3 Connecting the Power Cord
Before Connecting the Power Cord
Connect power cord of standard accessories and ensure that the electronic
load is under normal power supply.
⚫The power cords supplied with this product is certified for safety. In
case the supplied lines assembly needs to be replaced, or an
extension lines must be added, be sure that it can meet the required
power ratings of this product. Any misuse voids the warranty of this
product.
⚫Before connecting power cord, be sure to switch off the instrument.
Power switch is in Off position.
⚫To avoid fire or electric shock, Make sure to use the power cord
supplied by ITECH.
⚫Be sure to connect the main power socket to the power outlet with
protective grounding. Do not use terminal board without protective
grounding.
⚫Do not use an extended power cord without protective grounding,
otherwise the protection function will fail.
Categories of Power Cords
⚫We provide standard power cords for IT8615/IT8615L and IT8616/IT8617
side plate structure. Please select appropriate power cords appropriate to
local voltage based on the specifications of power cords below. If
purchased model fails to meet local voltage requirements, please contact
distributor or factory for change.
China
IT-E171
America, Canada,
Japan
IT-E172
Europe
IT-E173
Britain
IT-E174
⚫The power cord of IT8616(15U cabinet)/IT8617(15U cabinet)/IT8624
/IT8625/IT8626/IT8627/IT8628 electronic load is shown in the next figure.
ООО "Техэнком" Контрольно-измерительные приборы и оборудование www.tehencom.com

Copyright © ITECH Electronic Co., Ltd. 10
Connecting the Power Cord
⚫Model IT8615/IT8615L/IT8616(side plate structure)/IT8617(side plate
structure) electronic load
Connect standard power cord to the AC input terminals directly. (Take the
example of model IT8615)
⚫Model IT8616(15U cabinet)/IT8617(15U cabinet)/IT8624/IT8625/IT8626
/IT8627/IT8628 electronic load (take the example of model IT8617)
Bofore connecting, you need to take apart the rear panel which covers the
AC input terminals.
Connecting Method:
1. See the above illustration, connect one end of the AC power cord to the
AC input terminal in the rear board of the electronic load. Connect the fire
wire, zero line and ground to the corresponding terminal of the device.
Connect the brown terminal to line (L), blue to neutral (N), and yellow-green
to ground.
2. Connect the plug on the other end of the power cord to your AC power
source.
AC input
terminal
AC input
terminal
ООО "Техэнком" Контрольно-измерительные приборы и оборудование www.tehencom.com

Copyright © ITECH Electronic Co., Ltd. 11
1.4 Connecting Test Lines
Precautions When Wiring the Circuit
⚫To prevent electric shock, turn the circuit under measurement off before
connection.
⚫Always put the mains plug into the grounded socket. Never use an ungrounded
wiring board. Before connecting the circuit, make sure the electronic load is
grounded properly.
⚫Strip the insulation covers of the measurement cables so that when they are
wired to the input terminals, the conductive parts (bare wires) do not protrude
from the terminals.Also, make sure to fasten the input terminal screws
securely so that cables do not come loose.
⚫When connecting measurement cables to the input terminals, only connect
measurement cables that have safety rubber terminals that cover their
conductive parts.Also, make sure to fasten the input terminal screws securely
so that cables do not come loose.
⚫Use measurement cables satisfying the rated conditions and with dielectric
strengths and current capacities that are appropriate for the voltage and
current being measured.
⚫Example: when making measurements on a current of 20A, use copper wires
that have a conductive cross-sectional area of 4mm2or greater.
Connecting the Measurement Circuit
IT8600 electronic load can measure electrical parameters of the test object. The
specific circuit connection diagram is shown below.
⚫The wiring for basic measurements of Model IT8615/IT8615L/IT8616 (side
plate structure)/IT8617 (side plate structure and 15U cabinet: three masters)
is as follows.
1. Respectively connect drive wires to six terminals Vs+/ V+/ V+ and Vs-/
V-/V- of the rear panel.
2. Respectively connect the other ends of wires to the anode and cathode
of the test object (as shown below).
Power
supply
Load
ООО "Техэнком" Контрольно-измерительные приборы и оборудование www.tehencom.com
Other manuals for IT8600 Series
2
This manual suits for next models
9
Table of contents
Other I-Tech AC Power Distribution manuals
Popular AC Power Distribution manuals by other brands

AudioQuest
AudioQuest NIAGARA 1200EU owner's manual

Ametek
Ametek TW Series Programming manual

Panamax
Panamax M5510-PRO Technical specifications

West Mountain Radio
West Mountain Radio RIGrunner 4005i user guide

Clarus
Clarus SEXTET Owner's manual installation and operation

Furman
Furman IT-REFERENCE 7i owner's manual