I-Tech IT-E255A User manual

Quick charger controller
IT-E255A/M User Manual
Model: IT-E255A/M
Version: V1.1/05,2019

Notices
© Itech Electronic, Co.,
Ltd. 2019
No part of this manual
may be reproduced in any
form or by any means (in-
cluding electronic storage
and retrieval or translation
into a foreign language)
without prior permission
and written consent from
Itech Electronic, Co., Ltd.
as governed by interna-
tional copyright laws.
Manual Part Number
Trademarks
Pentium is U.S. registered
trademarks of Intel
Corporation.
Microsoft, Visual Studio,
Windows and MS Win-
dows are registered
trademarks of Microsoft
Corporation in the United
States and/or other coun-
tries and regions.
Warranty
The materials contained in this docu-
ment are provided “as is”, and is sub-
ject to change, without prior notice, in
future editions. Further, to the maxi-
mum extent permitted by applicable
laws, ITECH disclaims all warrants, ei-
ther express or implied, with regard to
this manual and any information con-
tained herein, including but not limited
to the implied warranties of merchant-
ability and fitness for a particular pur-
pose. ITECH shall not be held liable
for errors or for incidental or indirect
damages in connection with the fur-
nishing, use or application of this
document or of any information con-
tained herein. Should ITECH and the
user enter into a separate written
agreement with warranty terms cover-
ing 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 de-
scribed herein are furnished under a li-
cense 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 author-
ized to the U.S. Government only in-
clude 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 commer-
cial 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 cor-
rectly performed or ad-
hered to, could result in
damage to the product or
loss of important data. Do
not proceed beyond a
CAUTION sign until the in-
dicated conditions are
fully understood and met.
A WARNING sign denotes
a hazard. It calls attention
to an operating procedure
or practice that, if not cor-
rectly performed or ad-
hered to, could result in
personal injury or death.
Do not proceed beyond a
WARNING sign until the
indicated conditions are
fully understood and met.
A NOTE sign denotes im-
portant hint. It calls atten-
tion to tips or
supplementary informa-
tion that is essential for
users to refer to.

Copyright © Itech Electronic Co., Ltd. I
IT-E255A/M User Manual
Quality Certification and Assurance
We certify that series instrument 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 work-
manship 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 PRE-
PAID. 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 prod-
ucts under designated environment;
•The product model or serial number is altered, deleted, removed or made il-
legible by customer;
•Damaged as a result of accidents, including but not limited to lightning, mois-
ture, fire, improper use or negligence.

Copyright © Itech Electronic Co., Ltd. II
IT-E255A/M User Manual
Safety Symbols
Direct current ON ( power)
Alternating
current
OFF ( power)
Both direct and
alternating
current
Power-on state
Chassis (earth
ground) symbol.
Power-off state
Earth ( ground)
terminal
Reference
terminal
Caution Positive terminal
Warning ( refer to
this manual for
specific Warning
or Caution
information)
Negative terminal
A chassis
terminal
- -
Safety Precautions
The following safety precautions must be observed during all phases of opera-
tion of this instrument. Failure to comply with these precautions or specific warn-
ings elsewhere in this manual will constitute a default under safety standards of
design, manufacture and intended use of the instrument. ITECH assumes no li-
ability for the customer’s failure to comply with these precautions.

Copyright © Itech Electronic Co., Ltd. III
IT-E255A/M User Manual
•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 in-
strument is well grounded.
•Please always use the provided cable to connect the instrument.
•Check all marks on the instrument before connecting the instrument to
power supply.
•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 unau-
thorized 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.
•We do not accept responsibility for any direct or indirect financial dam-
age 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 equip-
ment subject to safety requirements.

Copyright © Itech Electronic Co., Ltd. IV
IT-E255A/M User Manual
•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.
•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 outputinput
the dangerous voltage that can cause personal injury, and the operator
must always be protected from electric shock. Ensure that the outputin-
put 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 in-
strument. 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 ren-
der 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.
Environmental Conditions Requirements
Operating temperature 0°C～40°C
Operating humidity 20%～80%( non-condensation)
Storage temperature -10°C～70 °C

Copyright © Itech Electronic Co., Ltd. V
IT-E255A/M User Manual
Environmental Conditions Requirements
Altitude Operating up to 2,000 meters
Installation category II
Pollution degree Pollution degree 2
In order to ensure the accuracy of measurement, it is recommended to oper-
ate the instrument half an hour after start-up.
Regulation Tag
The CE tag shows that the product
complies with the provisions of all rel-
evant European laws (if the year is
shown, it indicates that the year when
the design is approved).
This instrument complies with the
WEEE directive (2002/96/EC) tag re-
quirements. This attached product
tag shows that the electrical/elec-
tronic product cannot be discarded in
household waste.
This symbol indicates that no danger
will happen or toxic substances will
not leak or cause damage in normal
use within the specified period. The
service life of the product is 10 years.
The product can be used safely within
the environmental protection period;
otherwise, the product should be put
into the recycling system.

Copyright © Itech Electronic Co., Ltd. VI
IT-E255A/M User Manual
Waste Electrical and Electronic Equipment
(WEEE) Directive
Waste electrical and electronic equip-
ment (WEEE) directive, 2002/96/EC
The product complies with tag re-
quirements of the WEEE directive
(2002/96/EC). This tag indicates that
the electronic equipment cannot be
disposed of as ordinary household
waste. Product Category
According to the equipment classifi-
cation in Annex I of the WEEE direc-
tive, this instrument belongs to the
“Monitoring” product.
If you want to return the unnecessary
instrument, please contact the near-
est sales office of ITECH.

Copyright © Itech Electronic Co., Ltd. VII
IT-E255A/M User Manual
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

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IT-E255A/M User Manual
Content
Quality Certification and Assurance .................................................................................. I
Warranty ............................................................................................................................ I
Limitation of Warranty ........................................................................................................ I
Safety Symbols................................................................................................................. II
Safety Precautions............................................................................................................ II
Environmental Conditions................................................................................................ IV
Regulation Tag.................................................................................................................. V
Waste Electrical and Electronic Equipment (WEEE) Directive ....................................... VI
Compliance Information.................................................................................................. VII
1 Brief Introduction ................................................................................................................ 1
1.1 Verifying the Shipment ............................................................................................. 1
1.2 Instrument Size Introduction .................................................................................... 2
1.3 Brief Introduction...................................................................................................... 2
1.4 Front Panel Introduction........................................................................................... 3
1.5 Rear Panel Introduction ........................................................................................... 5
2 Function and Features ....................................................................................................... 7
2.1 Connecting the Device Under Test .......................................................................... 7
2.2 Manual testing.........................................................................................................11
2.2.1 Test under QC2.0 Mode .............................................................................. 12
2.2.2 Test under PE+ 2.0 Mode ............................................................................ 13
2.2.3 Test under USB PD 3.0/PPS Mode ............................................................. 14
2.2.4 Test under List Mode (only for IT-E255A).................................................... 16
2.3 Automatic Test (only for IT-E255A) ........................................................................ 18
2.3.1 Preparation before Test ............................................................................... 18
2.3.2 Software Function Introduction.................................................................... 19
3 Technical specifications.................................................................................................... 29
3.1 Main technical parameters..................................................................................... 29
3.1.1 IT-E255A...................................................................................................... 29
3.1.2 IT-E255M ..................................................................................................... 29
A Appendix .......................................................................................................................... 31
A.1 Specifications of Red and Black Test Cables................................................. 31

Brief Introduction
1Brief Introduction
♦ Verifying the Shipment
♦ Instrument Size Introduction
♦ Brief Introduction
♦ Front Panel Introduction
♦ Rear Panel Introduction
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.
Table 1–1 The package contents include:
Item Qty. Model Remarks
Quick charger
controller
x1 IT-E255
series
IT-E255 series include IT-E255A
and IT-E255M
Power cord x1 - USB Adapter (5V/1A charger) and
MicroUSB to Type A cable (5V/1A
power cord)
USB cable (sup-
ply for IT-E255A)
x1 - This accessory is selected when
the USB interface is used for start-
ing up remote operation.
DB9 cable (sup-
ply for IT-E255A)
x1 - The user can use the TTL interface
to connect the IT8500+ series load.
CD x1 - It contains power supply User’s
Manual, Programming Guide and
other user documentations.
Ex-factory Test
Report
x1 - It is the test report of the instrument
before delivery.
Copyright © Itech Electronic Co., Ltd. 1

Brief Introduction
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 instrument size.
Detailed size of the IT-E255A/M quick charger controller is shown as below.
1.3 Brief Introduction
ITECH IT255A/M quick charger controller provides QC2.0, QC3.0, PE+, PE2.0
+, USB PD2.0 and USB PD3.0/USB PPS 6 types of protocols for automatically
or manually quick charger loading test. It can simulate the fast charge control
signal of smartphone, tablet and notebook, which is suitable for the test of
Copyright © Itech Electronic Co., Ltd. 2

Brief Introduction
smartphone/tablet charger, AC-DC adapter, mobile power bank, car charger
and wall charger.
IT-E255M is manual version, which can support IT8500+, IT8800, IT8700 elec-
tronic loads connection and simulate the loading of quick charger.
IT-E255A is automatic version, which can support automatic test of the host
computer and manual test. Under different operation modes, the supported load
models are different:
•Under manual operation mode, it has the same function as the IT-E255M
and can support manual test of List file.
•Under automatic operation mode, it can only support IT8500+ DC electronic
load to simulate the loading test of charger load. It can support the intercon-
nection between TTL interface and IT8500+ DC electronic load and realize
the software control load setting.
IT–E255A/M quick charger controller are featured with:
•Large-screen LCM liquid crystal display
•Provides QC2.0, QC3.0, PE+, PE2.0+, USB PD2.0 and USB PD3.0/USB
PPS 6 types of protocols
•Provide a Micro USB and a USB Type C hardware interface for DUT
connection.
•Standard Micro USB power cord (5V, 1A)
•Support the USB Charger Software of host computer (only for IT–E255A)
•Support the communication with PC through USB VCP and USBTMC com-
munication method (only for IT–E255A)
•Support SCPI communication format (only for IT–E255A)
•The Software Interface can display USBD+ and USBD- voltage (only for IT–
E255A)
•Support List operation mode. The user can download the host computer pro-
gram to the quick charger controller for manual test (only for IT–E255A).
1.4 Front Panel Introduction
The front panels of IT-E255A and IT-E255M quick charger controllers are the
same. Detailed button and appearance are described as below.
Copyright © Itech Electronic Co., Ltd. 3

Brief Introduction
No. Description Function description
1 START •Short press: Start to change the output voltage
based on setting value.
•Long press for 3 seconds: Start to change the
output voltage based on setting value, and
save the mode states selected by MODE and
current duration under PE mode. After saving,
“saved” will be displayed. In the next starting,
the quick charger controller will automatically
load the setting value, and the user needs not
to set it again.
2 DOWN Decrease the setting voltage value. Under QC3.0,
PE+2.0 and PD3.0 modes, there are short press
and long press; by pressing and holding the
DOWN button, the user can quickly decrease the
voltage value or current value (only in PPS).
3 UP Increase the setting voltage value. Under QC3.0,
PE+2.0 and PD3.0 modes, there are short press
and long press; by pressing and holding the UP
button, the user can quickly increase the voltage
value or current value (only in PPS).
4 MODE The user can select the protocol supported by the
quick charger controller in order. Select the fast
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Brief Introduction
No. Description Function description
charging protocol the same as the adapter to be
tested so as to execute control.
•IT-E255M: QC 2.0 -> QC 3.0 -> PE+ -> PE+
2.0 -> USBPD 2.0/USBPD 3.0
•IT-E255A: QC 2.0 -> QC 3.0 -> PE+ -> PE+ 2.0
-> USBPD 2.0/USBPD 3.0-> List Mode.
Under PPS mode, the user can switch the
setting state of voltage and current.
5 USB Type-C It is the USB Type-C port for connecting the DUT.
6 LCD screen Display existing mode as well as voltage and other
parameters.
7 Fixing hole It is used to fix the quick charger controller.
8 Micro USB It is the Micro USB port for connecting the DUT.
1.5 Rear Panel Introduction
The rear panel of the IT-E255A quick charger controller is described as below.
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Brief Introduction
No. Description Function description
1 USB Interface Interconnect to the PC host computer.
2 TTL Interface Interconnect to the COM (TTL) Interface on the
rear panel of IT8500+.
3 Power Input
Interface
It is the input power interface of the IT-E255A quick
charger controller.
4 Terminal Block Connect to the load input terminal and the remote
measurement terminal of the load.
The rear panel of IT-E255M quick charger controller is described as below.
No. Name Description
1 Terminal Block Connect to the load input terminal and the remote
measurement terminal of the load.
2 Power Input
Interface
It is the input power interface of the IT-E255M
quick charger controller.
Copyright © Itech Electronic Co., Ltd. 6

Function and Features
2Function and Features
This chapter describes in detail the use of the front-panel keys and shows how
they are used to accomplish instrument operation. This chapter is divided into
the following sections:
♦ Connecting the Device Under Test
♦ Manual testing
♦ Automatic Test (only for IT-E255A)
2.1 Connecting the Device Under Test
Precautions
To prevent electric shock and damage to the instrument, observe the following
precautions.
•To avoid electrical shock, before testing, please make sure the rating val-
ues of the testing lines, and do not measure the current that higher than
the rating value. All test lines shall be capable of withstanding the maxi-
mum short circuit output current of the power supply without causing
overheat.
•The quick charger controller is provided with a standard power cord. If
the user needs to replace other power cords, please note the input speci-
fications of the quick charger controller. This will avoid damage to the
instrument.
•During wiring, check that the anode and cathode of the test lines are
properly and tightly connected.
Specification
Test cables are not standard accessories for the instrument. Please select op-
tional red and black test cables for individual sales based on the maximum cur-
rent value. For specifications of test cables and maximum current values, refer
to the A.1 Specifications of Red and Black Test Cables in chapter A Appendix
for more information.
Copyright © Itech Electronic Co., Ltd. 7

Function and Features
Wiring Method for Manual Test
The IT-E255M/IT-E255A can be directly connected to such DC electronic loads
as IT8500+, IT8800 and IT8700 to manually simulate the loading test of charger
load. The chapter below describes the wiring method for manual test by taking
the connection of IT-E255A to IT8500+ as an example.
The rear panel of IT-E255M is slightly different from that of IT-E255A, but the
wiring terminal and method are the same. For details, refer to specific instru-
ment marks.
1. Use red and black test cables to connect the Load+ and Load- of the quick
charger controller to the anode and cathode of the load’s front panel.
2. Use the twisted-pair cables to connect the Vs+ and Vs- of the quick charger
controller to the Sense+ and Sense- of the load’s rear panel.
Copyright © Itech Electronic Co., Ltd. 8

Function and Features
3. The quick charger controller is provided with a standard power cord. Please
directly insert the USB Adapter terminal of the power cable to the 220V
socket.
4. Insert the Micro USB terminal of the power cord to the DC input terminal of
the quick charger controller’s rear panel.
To ensure the stability of the system, use armored twisted-pair cables be-
tween the remote sense terminals and the equipment under test.
Wiring Method for Automatic Test
The IT-E255A can realize interconnection to the PC host computer, which uses
software at the PC terminal for automatic test. The chapter below describes the
wiring method for automatic test by taking the connection of IT-E255A to IT8500
+ as an example.
Copyright © Itech Electronic Co., Ltd. 9

Function and Features
1. Use red and black test cables to connect the Load+ and Load- of the quick
charger controller to the anode and cathode of the load’s front panel.
2. Use the twisted-pair cables to connect the Vs+ and Vs- of the quick charger
controller to the Sense+ and Sense- of the load’s rear panel.
3. Use USB communication cable to connect the quick charger controller and
the PC host computer.
4. Use DB9 cable to connect the quick charger controller and the IT8500+ TTL
interface.
5. The quick charger controller is provided with a standard power cord. Please
directly insert the USB Adapter terminal of the power cord to the 220V AC
socket.
6. Insert the Micro USB port of the power cord to the DC input interface of the
quick charger controller’s rear panel.
To ensure the stability of the system, use armored twisted-pair cables be-
tween the remote sense terminals and the equipment under test.
Connecting the Device Under Test
The IT-E255A and IT-E255M quick charger controllers have the same interfaces
to connect to the DUT, which provide two kinds of interfaces, namely, USB
Type-C and Micro-USB to connect different types of interfaces. Select either sol-
id-line connection or dotted-line connection as shown below based on the inter-
face type.
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