I-Tech IT8500plus Series User manual

DC Programmable Electronic
Loads
Series IT8500plus User’s Manual
Model:IT8511+/IT8511A+/IT8511B+/IT8512+/IT8512A
+/IT8512B+/IT8512C+/IT8512H+/IT8513A+/IT8513C
+/IT8514C+/IT8514B+/IT8516C+
Version:2.0

Notices
© Itech Electronic, Co., Ltd. 2015
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
IT8500+-402008
Revision
Second Edition: May 09,
2017
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 follows FAR 12.211 (technical
data), 12.212 (computer software).
DFARS 252.227-7015 (technical
data--commercial products) for national
defense and DFARS 227.7202-3
(permissions for commercial computer
software or computer software
documents) while providing the
customized business licenses of
software and technical data.
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.

IT8500+ User’s Manual
Copyright © Itech Electronics Co., Ltd. i
Quality Certification and Assurance
We certify that series IT8500+ electronic load meets all the published
specifications at time of shipment from the factory.
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 in case of the following:
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 altered, deleted, removed or made
illegible by customer;
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
Frame or chassis terminal
-
-

IT8500+ User’s Manual
Copyright © Itech Electronics Co., Ltd. ii
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.
Series IT8500+ electronic load supports 110V/220VAC input and need to
switch the input voltage before operation.
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 electronic load is provided with a three-core power line during delivery
and should be connected to a three-core junction 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 current of electronic load without
overheating. If there are multiple electronic loads, each pair of the power
cord must be capable of bearing the full-loaded rated short-circuit output
current
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 loosen.
To prevent the possibility of accidental injuries, be sure to use the power
adapter supplied by the manufacturer only.
Never use the instrument with a life-support system or any other equipment
subject to safety requirements.
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.

IT8500+ User’s Manual
Copyright © Itech Electronics Co., Ltd. iii
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
Operating up to 2,000 meters
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 indicates that the product
complies with all the relevant European
le
gal directives. The specific year (if any)
affixed refers to the year when the design
was approved.
The instrument complies with the WEEE
Directive (2002/96/EC) marking
requirement. This affixed
product label
indicates that you must not discard the
elec
trical/electronic product in domestic
household waste.
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 p
roduct 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 Equiment (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

IT8500+ User’s Manual
Copyright © Itech Electronics Co., Ltd. iv
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”.
To return this unwanted instrument, contact your nearest
ITECH office.

IT8500+ User’s Manual
Copyright © Itech Electronics 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

IT8500+ User’s Manual
Copyright © Itech Electronics Co., Ltd. vi
Content
DC PROGRAMMABLE ELECTRONIC LOADS ................................................................................................ 1
QUALITY CERTIFICATION AND ASSURANCE ....................................................................................................................... 1
WARRANTY .............................................................................................................................................................. 1
LIMITATION OF WARRANTY .......................................................................................................................................... 1
SAFETY SYMBOLS....................................................................................................................................................... 1
SAFETY PRECAUTIONS ................................................................................................................................................. 2
ENVIRONMENTAL CONDITIONS...................................................................................................................................... 3
REGULATORY MARKINGS ............................................................................................................................................. 3
WASTE ELECTRICAL AND ELECTRONIC EQUIMENT (WEEE) DIRECTIVE .................................................................................... 3
COMPLIANCE INFORMATION......................................................................................................................................... 5
CHAPTER1 INSPECTION AND INSTALLATION ...................................................................................................... 1
1.1 VERIFYING THE SHIPMENT ...................................................................................................................................... 1
1.2 INSTRUMENT SIZE INTRODUCTION............................................................................................................................ 1
1.3 ADJUSTMENT OF LOAD HANDLE............................................................................................................................... 3
1.4 DISASSEMBLY OF LOAD HANDLE............................................................................................................................... 4
1.5 RACK MOUNTING ................................................................................................................................................ 5
1.6 CONNECTING THE POWER CORD.............................................................................................................................. 5
CHAPTER2 QUICK START .................................................................................................................................... 6
2.1 BRIEF INTRODUCTION............................................................................................................................................ 6
2.2 FRONT PANNEL INTRODUCTION ............................................................................................................................... 7
2.3 VFD DISPLAY ANNUNCIATORS................................................................................................................................. 8
2.4 FRONT PANEL KEYS............................................................................................................................................... 8
2.5 COMBINATION KEYS.............................................................................................................................................. 9
2.6 REAR PANNEL INTRODUCTION ............................................................................................................................... 10
2.7 POWER-ON SELFTEST .......................................................................................................................................... 11
CHAPTER3 FUNCTIONS AND CHARACTERISTICS .............................................................................................. 14
3.1 LOCAL MODE/REMOTE MODE .............................................................................................................................. 14
3.2 OPERATION MODE ............................................................................................................................................. 14
3.2.1 Constant Current Mode (CC) ............................................................................................................ 14
3.2.2 Constant Voltage Mode (CV)............................................................................................................. 15
3.2.3 Constant Resistance Mode (CR)...................................................................................................... 15
3.2.4 Constant Power Mode (CW).............................................................................................................. 15
3.3 INPUT ON/OFF CONTROL .................................................................................................................................... 16
3.4 SHORT-CIRCUIT ANALOG FUNCTION ....................................................................................................................... 16
3.5 SYSTEM MENU (SYSTEM)..................................................................................................................................... 16
3.6 CONFIG MENU (CONFIG)..................................................................................................................................... 17
3.7 TRIGGER FUNCTION ............................................................................................................................................ 19
3.8 TRANSIENT FUNCTION ......................................................................................................................................... 19
3.8.1 Continuous Mode ............................................................................................................................... 19
3.8.2 Pulse Mode......................................................................................................................................... 19
3.8.3 Toggled Mode..................................................................................................................................... 20
3.9 LIST OPE RAT ION................................................................................................................................................ 20
3.10 SAVING AND RECALLING SETTINGS ....................................................................................................................... 20
3.11 VON FUNCTION .............................................................................................................................................. 21
3.12 OCP OP ER ATION ............................................................................................................................................. 22
3.13 OPP OPERATION ............................................................................................................................................. 23
3.14 BAT TE RY TEST.................................................................................................................................................. 24
3.15 CR-LED TEST FUNCTION ................................................................................................................................... 26
3.16 MEASUREMENT OF VOLTAGE RISE TIME................................................................................................................. 26
3.17 PROTECTION FEATURES...................................................................................................................................... 27
3.17.1 Over Voltage Protection (OVP)....................................................................................................... 27
3.17.2 Over Current Protection (OCP)....................................................................................................... 27
3.17.3 Over Power Protection (OPP)......................................................................................................... 28
3.17.4 Over Temperature Protection (OTP) .............................................................................................. 28
3.17.5 Reverse Voltage Protection (LRV).................................................................................................. 28
3.18 KEY LOCK FUNCTION ......................................................................................................................................... 28

IT8500+ User’s Manual
Copyright © Itech Electronics Co., Ltd. vii
3.19 THE TERMINALS ON THE REAR PANEL.................................................................................................................... 28
3.19.1 Remote Sensing............................................................................................................................... 28
3.19.2 External Triggering........................................................................................................................... 29
3.19.3 Current Monitoring (I Monitor)......................................................................................................... 29
3.19.4Ripple Function.................................................................................................................................. 30
CHAPTER4 BASIC OPERATION .......................................................................................................................... 31
4.1 CONSTANT CURRENT OP E R AT I O N ........................................................................................................................... 31
4.2 CONSTANT VOLTAGE OP E R AT IO N ........................................................................................................................... 31
4.3 CONSTANT POWER OPERATION ............................................................................................................................. 32
4.4 CONSTANT RESISTANCE OPE R AT I ON ........................................................................................................................ 32
4.5 TRANSIENT TEST OP E R AT IO N ................................................................................................................................ 32
4.5.1 Continuous Transient Operation ....................................................................................................... 33
4.5.2 Pulse Transient Operation................................................................................................................. 34
4.5.3 Toggle Transient Operation ............................................................................................................... 34
4.6 LIST OPER ATION................................................................................................................................................. 35
4.7 TEST FILES ........................................................................................................................................................ 37
CHAPTER5 COMMUNICATION INTERFACES...................................................................................................... 42
5.1COMMUNICATION MODULES INTRUDUCTION ............................................................................................................ 42
5.2 COMMUNICATION WITH PC.................................................................................................................................. 43
5.3USB INTERFACE.................................................................................................................................................. 45
CHAPTER6 SPECIFICATIONS.............................................................................................................................. 46
SPECIFICATIONS ....................................................................................................................................................... 46
SUPPLEMENTARY CHARACTERISTICS.............................................................................................................................. 54
APPENDIX............................................................................................................................................................... 55
SPECIFICATIONS OF RED AND BLACK TEST LINES .............................................................................................................. 55

Inspection and Installation
Copyright © Itech Electronics 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
Electronic Loads x1 IT8500+ series
The IT8500+ series include:
IT8511+/IT8511A+/IT8511B+/IT85
12+/IT8512A+/IT8512B+/IT8512C
+/IT8512H+/IT8513A+/IT8513C+/I
T8514C+/IT8514B+/IT8516C+
Power cord x1 IT-E171/IT-E172 /IT-E173/IT-E17
4
User may select an appropriate
power cord that matches the
specifications of power socket
used in the area. See the
Section Connecting the Power
Cord
for details.
CD x1 -
It contains IT8500+ 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.
IT8500+ series electronic load different models are not the same size, the detail
size of the electronic load are shown as below.

Inspection and Installation
Copyright © Itech Electronics Co., Ltd. 2
IT8511+/IT8511A+/IT8511B+/IT8512+/IT8512B+/IT8512C+/IT8512H+ Model
Dimension:
Width: 214.5mm
Height: 88.2mm
Depth: 354.6mm
Detialed Dimension Drawing
IT8513A+/IT8513C+ Model
Dimension:
Width: 214.5mm
Height: 88.2mm
Depth: 453.5mm
Detailed Demension Drawing

Inspection and Installation
Copyright © Itech Electronics Co., Ltd. 3
1.3 Adjustment of Load Handle
IT8511+/IT8511A+/IT8511B+/IT8512+/IT8512A+/IT8512B+/IT8512C+/IT8512H
/IT8513A+/IT8513C+ series loads are equipped with a handle for user to easily
carry and place it.
IT8514B+/ IT8514C+ Model
Dimension:
Width: 436.5.5mm
Height: 88.2mm
Depth: 463.5mm
Detialed Dimension Drawing
IT8516C+ Model
Dimension:
Width: 482.5mm
Height: 174.5mm
Depth: 531.5mm
Detailed Dimension Drawing

Inspection and Installation
Copyright © Itech Electronics Co., Ltd. 4
The load handle may be adjusted based on three methods (as shown in icons
below). Be sure that appropriate force is applied to adjust the load handle to
appropriate position.
1.4 Disassembly of Load Handle
Please disassemble the load handle before installing equipment on the support.
Disassembly steps:
1. Adjust the handle to the position as shown in the figure below.
NOTE
To easily disassemble handle, align the locking mouth and locking device, which is between
the handle and the instrument.
2. Align the locking mouth, and pull out the handle towards two sides.
NOTE
Do not use too much force and mind your hands during disassembly of load handle.

Inspection and Installation
Copyright © Itech Electronics Co., Ltd. 5
1.5 Rack Mounting
IT8511+/IT8511A+/IT8511B+/IT8512+/IT8512A+/IT8512B+/IT8512C+/IT8512H
+/IT8513A+/IT8513C+ loads can be installed on standard 19-inch rack. ITECH
provides user with IT-E151/IT-E151A rack, as an optional mount kit. The
detailed operation please refer to the User Manual of your mount kit.
IT8514B+/IT8514C+/IT8516C+ need not mount on rack, they can installed on
cabinet directly by screw.
1.6 Connecting the Power Cord
Connect the power cord after checking that the power switch of the instrument
is turned OFF. Only use the power cord supplied as a standard accessory.
Select from the following Schedule of Power Cord Specifications an appropriate
power cord that matches the voltage for the area in which you use the
instrument. If the power cord included in the instrument you purchased does
not match the voltage, contact the dealer or manufacturer for change.
China
IT-E171
United States &
Canada
IT-E172
Europe
IT-E173
England
IT-E174
E
N L
E
L N
E
N L
E
L N

Quick Start
Copyright © Itech Electronics Co., Ltd. 6
Chapter2 Quick Start
This chapter introduces the front panel, the rear panel, key functions and VFD
display function of the electronic load, make sure that you can quickly know the
appearance, instruction and the key function before you operate the load, Help
you make better use of this series of electronic load.
2.1 Brief Introduction
IT8500plus series DC electronic loads are single channel programmable
electronic load which can provide multiple solutions according to the
requirements of your design and test. This series have international advanced
functions and features.
High-visibility vacuum fluorescent display (VFD)
Measurement resolution: 0.1mV,0.1mA
Voltage and current Measurement speed: up to 40KHZ
Four operation modes:CV(Constant Voltage),CC,CR,CW
Battery test function
OCP test , OVP test
Auto test function:
Short circuit function
Remote Sense function
Memory capacity to save/recall setting parameters: 100 registers
Intelligent fans
Build-in Buzzer as alarm signal
Power off memory function
Rotary knob, making the operation more convenient
Measure test function,test the rising/dropping time of the voltage
List modes
Model
Voltage
Current
Power
Communication
Interface
IT8511+
120V
30A
150W
DB9(TTL)
IT8511A+
150V
30A
150W
DB9(TTL)
IT8511B+
500V
10A
150W
DB9(TTL)
IT8512+
120V
30A
300W
DB9(TTL)
IT8512A+
150V
30A
300W
DB9(TTL)
IT8512B+
500V
15A
300W
DB9(TTL)
IT8512C+
120V
60A
300W
DB9(TTL)
IT8512H+
800V
5A
300W
DB9(TTL)
IT8513A+
150V
60A
400W
DB9(TTL)
IT8513C+
120V
120A
600W
DB9(TTL)
IT8514B+
500V
60A
1500W
USB/RS232
IT8514C+
120V
240A
1500W
standard USB/RS232
IT8516C+
120V
240A
3000W
Standard USB/RS232

Quick Start
Copyright © Itech Electronics Co., Ltd. 7
2.2 Front Pannel Introduction
IT8500+ series electronic load different models have different front pannels, the
front panels and keyboards of different models are shown as below.
IT8511+/IT8511A+/IT8511B+/IT8512+/IT8512A+/IT8512B+/IT8512C+/IT8512H+/IT8513A+/IT
8513C+ Model
①
Power switch
②vacuum fluorescent display (VFD)
③Compound key and the local switch key
④Number key:
Set the parameters value,
achieve the menu’
s function by key
combination
⑤
Function key:
Set the operation mode
Control the input state: On/Off
⑥Direction function
⑦Rotary knob
⑧Input terminal
IT8514B+/IT8514C+ Model
①
Power switch
②vacuum fluorescent display (VFD)
③Compound key and the local switch key
④Number key:
Set the parameters value,
achieve the menu’
s function by key
combination
⑤
Function key:
Set the operation mode
Control the input state: On/Off
⑥Direction function
⑦Rotary knob
⑧Input terminal

Quick Start
Copyright © Itech Electronics Co., Ltd. 8
2.3 VFD Display Annunciators
OFF
The load is off.
Error
An error has occurred.
CC
Constant current
mode
Trig
Waiting for the trigger
signal
CV
Constant voltage
mode
Sense
Remote sensing is on.
CR
Constant resistance
mode
Prot
OCP function is on.
CW
Constant power mode
Auto
Voltage range automatically
seleted function is open
Rmt
Instrument is in the
remote state.
Lock
The keyboard is locked.
Timer
LOAN ON is on.
Shift
Shift button has been
pressed.
2.4 Front Panel Keys
( Blue-green)
Shift button is a composite key.
IT8516C + Model
①
Power switch
②vacuum fluorescent display (VFD)
③Com pound key and the local switch key
④Num ber key:
Set the parameters value,
achieve the menu’
s function by key
combination
⑤
Function key:
Set the operation mode
Control the input state: On/Off
⑥Direction function
⑦Rotary knob
⑧Input terminal

Quick Start
Copyright © Itech Electronics Co., Ltd. 9
(Gray)
Local button is used to switch local and remote
mode.
(Gray-white)
Power on button
~ Enter the digits 0 to 9.
Decimal point
The escape key
Choose constant current mode.
Choose constant voltage mode.
Choose constant resistance mode.
Choose constant power mode.
Enter the selected value or setting.
Turns DC Load ON or OFF (
OFF is high
impedance state).
Scroll up key
Scroll down key
Scroll left and right key
2.5 Combination Keys
Press [ Shift ] button first and then other keys to achieve all kinds functions in
the following table.
[ Shift ]+ [ 1 ] (Short)
Turn short circuit on or off.
[ Shift ]
+ [ 2 ] (Tran)
Start or stop transient condition.
[ Shift ]
+ [ 3 ] (List)
Set LIST operation parameters.
[ Shift ] + [ 4 ] (Save)
Store the DC Load state in non-volatile
memory.
[ Shift ]
+ [ 5 ] (Battery)
Turn on or off battery testing function.
[ Shift ]
+ [ 6 ] (Prog)
Enter auto test function.
[ Shift ] + [ 7 ] (Info)
Display product’s Model/SN/Version.
[ Shift ]
+ [ 8 ] (System)
System menu setting
[ Shift ]
+ [ 9 ] (Config)
Configure menu setting
[ Shift ] + [ 0 ] (Pause)
Press this button if you need a pause
when runing an auto test file.
[ Shift ]
+
[ ]
(Trigger)
Cause an immediate trigger.
[ Shift ] + [ CC ] (OCP)
Enter OCP test function.
[ Shift ]
+ [ CV ] (Setup)
Set detailed parameters in
CC/CV/CW/CRmode.
[ Shift ] + [ CW ] (OPP)
Enter OPP test function.
[ Shift ]
+ [ Enter ] (Recall)
Recall the DC Load state from
non-volatile memory.
[ Shift ] + [ On/Off ] (Lock)
Key lock function
0
9
ESC

Quick Start
Copyright © Itech Electronics Co., Ltd. 10
2.6 Rear Pannel Introduction
IT8500+ series electronic load different models have different rear pannels, the
rear panels and keyboards of different models are shown as below.
IT8511+/IT8511A+/ IT8511B+/IT8512+/ IT8512B+/IT8512C+/IT8512H/IT8513A+/IT8513C+ Model
①
Thermal window
②
Line voltage selection
switch( 110V/220V )
③
3 pin IEC320 AC input connector
④
Current monitoring Terminal
⑤9-Pin serial port interface connector
⑥4 pin trigger and remote sensing connector
IT8514B+/IT8514C+Model
①
Thermal window
②
Line voltage selection
switch( 110V/220V )
③3 pin IEC320 AC input connector
④
Current monitoring Terminal
⑤RS232 communication cable interface
⑥4 pin trigger and remote sensing connector
⑦USB communication cable interface

Quick Start
Copyright © Itech Electronics Co., Ltd. 11
IT8516C+Model
①
Thermal window
②
Line voltage selection
switch( 110V/220V )
③3 pin IEC320 AC input connector
④
Current monitoring Terminal
⑤RS232 communication cable interface
⑥4 pin trigger and remote sensing connector
⑦USB communication cable interface
2.7 Power-on Selftest
A successful test process indicates that the instrucment meets the factory
specifications and can be operated well.
Before operation, please confirm that you have fully understood the safety
instructions.
To avoid burning out, be sure to confirm that power voltage matches with
supply voltage.
Be sure to connect the main power socket to the power outlet of protective
grounding. Do not use terminal board without protective grounding. Before
operation, be sure that the power supply is well grounded.
To avoid burning out, pay attention to marks of positive and negative
polarities before wiring.
Selftest steps Normal selftest procedures:
1. Correctly connect the power cord. Press [Power ] key to start up.
2. After selftest, VFD displayinformation below.
Information description:
The first line display actual voltage and current value.
The second line display the actual power value and the setting
current/voltage/power/resistance value
0.0000V 0.0000A
0.00W CC=0.000A
OFF CC Auto