I-Tech IT-E158 User manual

19-inch Rack Mount
IT-E158 User Manual

Notices
© Itech Electronic, Co., Ltd. 2023
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
IT-E158
Revision
First Edition: Feb. 2th, 2023
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.

IT-E158 User Manual
Copyright © Itech Electronic Co., Ltd. iii
Quality Certification and Assurance
We certify that this 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
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

IT-E158 User Manual
Copyright © Itech Electronic Co., Ltd. iv
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 electronic load is provided with a power line during delivery and should
be connected to a socket with a protective earth terminal. 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.
If you use the power supply to charge the battery, pay attention to the
positive and negative polarity of the battery when wiring, otherwise the
power supply will be damaged!
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.
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.

IT-E158 User Manual
Copyright © Itech Electronic Co., Ltd. v
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.
Environmental Conditions
Requirements
Operating temperature
0°C to 40°C
Operating humidity
20%-80% (non-condensation)
Storage temperature
-10°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 legal directives. The specific year
(if any) affixed refers to the year when the design was
approved.
The UKCA mark indicates that the product complies with
all relevant UK legal regulations (if accompanied by a
year, it indicates the year 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
electrical/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 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.

IT-E158 User Manual
Copyright © Itech Electronic Co., Ltd. vi
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”.
To return this unwanted instrument, contact your nearest
ITECH office.

IT-E158 User Manual
Copyright © Itech Electronic Co., Ltd. vii
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 11:2015+A1:2016 Ed 6.1
IEC 61000-3-2: 2018 RLV
IEC 61000-3-3: 2013+A1:2017
IEC 61000-4-2:2008
IEC 61000-4-3 2006+A1:2007+A2:2010/ EN 61000-4-3 A1:2008+A2:2010
IEC 61000-4-4:2012
IEC 61000-4-5:2014+A1:2017
IEC 61000-4-6:2013+cor1:2015
IEC 61000-4-11:2004+A1:2017
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+A1:2016

IT-E158 User Manual
Copyright © Itech Electronic Co., Ltd. iv
Content
Quality Certification and Assurance ..........................................................................................................iii
Warranty ....................................................................................................................................................iii
Limitation of Warranty................................................................................................................................iii
Safety Symbols..........................................................................................................................................iii
Safety Precautions ....................................................................................................................................iv
Environmental Conditions.......................................................................................................................... v
Regulatory Markings.................................................................................................................................. v
Waste Electrical and Electronic Equipment (WEEE) Directive..................................................................vi
Compliance Information............................................................................................................................vii
Chapter1 IT-E158 Introduction............................................................................................................. 1
IT-E158A................................................................................................................................................ 1
IT-E158B................................................................................................................................................ 2
IT-E158C................................................................................................................................................3
IT-E158D................................................................................................................................................4
Chapter2 Installation Instruction..................................................................................................... 6
2.1 Instrument Preparation........................................................................................................................6
2.2 Installation of a single instrument........................................................................................................ 7
Installation into ITECH cabinet (select IT-E158C) .................................................................................7
Installation into non-ITECH cabinets (select IT-E158D) ........................................................................ 9
2.3 Installation of two instruments...........................................................................................................12
Installation into ITECH cabinet (select IT-E158A) ...............................................................................12
Installation into non-ITECH cabinets (select IT-E158B) ......................................................................15

IT-E158 Introduction
Copyright © Itech Electronic Co., Ltd. 1
Chapter1 IT-E158 Introduction
IT2800, IT-N6900, IT-M3140 series and IT-M7723E model instruments can be
installed in the standard 19-inch cabinet, we provide IT-E158A, IT-E158B,
IT-E158C, IT-E158D four bracket models, users choose different bracket kits
according to the actual use.
The following is a detailed description of the bracket.
IT-E158A
The IT-E158A is a kit for installing 2 instruments side-by-side into an ITECH
cabinet.
Contains a mounting handle at the front of the instrument, a fixing piece
connecting the middle of the 2 instruments, and a fixing piece at the rear of the
instrument.
Details of the parts and quantities are as follows.

IT-E158 User Manual
Copyright © Itech Electronic Co., Ltd. 2
No.
Description
Quantity
1
Cross countersunk head screw M4x10
12
2
Carrying handle
2
3
Connections
2
4
Crossed small pan head screw M3x6
4
5
Connections
2
6
2U mounting ears
2
7
Crossed small pan head screw M4x8
8
8
Rear mounting connector (for fixing instrument)
2
9
Cassette Nut Set
8
10
Rear mounting connector (for fixing cabinet)
2
11
Hexagon socket cheese head combination screw M5x12
4
IT-E158B
The IT-E158B bracket is a kit for mounting 2 instruments side-by-side into a
non-ITECH cabinet.
Contains a mounting handle at the front of the instrument, a fixing piece
connecting the 2 instruments in the middle, and a retractable fixing piece at the
rear of the instrument.

IT-E158 User Manual
Copyright © Itech Electronic Co., Ltd. 3
Details of the parts and quantities are as follows.
No.
Description
Quantity
1
Cross countersunk head screw M4x10
12
2
Carrying handle
2
3
Connections
2
4
Crossed small pan head screw M3x6
4
5
Connections
2
6
2U mounting ears
2
7
Crossed small pan head screw M4x8
8
8
Cassette Nut Set
8
9
Rear mounting connector (for fixing cabinet)
2
10
Hexagon socket cheese head combination screw M5x12
4
11
Rear mounting connector (for fixing instrument)
2
IT-E158C The IT-E158C is a kit for mounting a single instrument into an ITECH cabinet
(with a baffle on the other side).
Includes mounting handle at the front of the instrument, baffle plate, and fixing
piece at the rear of the instrument.
Details of the parts and quantities are as follows.

IT-E158 User Manual
Copyright © Itech Electronic Co., Ltd. 4
No.
Description
Quantity
1
Crossed small pan head screw M4x8
12
2
2U mounting ears
2
3
Panel brackets
2
4
Carrying handle
2
5
Cross countersunk head screw M4x10
4
6
Rear mounting connector (for fixing instrument)
2
7
Cassette Nut Set
8
8
Rear mounting connector (for fixing cabinet)
2
9
Hexagon socket cheese head combination screw M5x12
4
IT-E158D The IT-E158D is a kit for mounting a single instrument into a non-ITECH
cabinet (with a baffle on the other side).
Includes mounting handle at the front of the instrument, a baffle plate, and a
retractable fixture at the rear of the instrument.
Details of the parts and quantities are as follows.

IT-E158 User Manual
Copyright © Itech Electronic Co., Ltd. 5
No.
Description
Quantity
1
Crossed small pan head screw M4x8
12
2
2U mounting ears
2
3
Panel brackets
2
4
Carrying handle
2
5
Cross countersunk head screw M4x10
4
6
Cassette Nut Set
8
7
Rear mounting connector (for fixing cabinet)
2
8
Hexagon socket cheese head combination screw M5x12
4
9
Rear mounting connector (for fixing instrument)
2

Installation Instruction
Chapter2 Installation Instruction
2.1 Instrument Preparation
Before installing the IT-E158 kit, the instrument handle and rubber protective
sleeve need to be removed, as detailed below (take the IT2801 SMU as an
example).
Do not block the air inlet holes on the side of the instrument and the air exhaust
holes on the rear panel.
1. Grab the handle by the sides and pull outward. This will allow you to rotate the
handle.As shown in the figure below.
2. Refer to the figure below and turn the handle from position Ato B.
When turning the handle, take care to place the instrument gently to prevent it
from falling.
3. Pull outward and then lift the handle upward.

Installation Instruction
When reattaching the handle, pay attention to its direction. Incorrect
attachment may damage the hardware. When removing the handle, do not
use excessive force and be careful of pinching your hand.
4. Remove the front and rear rubber bumpers.
The bracket mounting holes can be seen on both sides of the instrument.
2.2 Installation of a single instrument
Installation into ITECH cabinet (select IT-E158C)
When installed into the ITECH cabinet, the installation method is shown below.
1. Fasten the cross countersunk head screws M4x10 (4pcs) in the IT-E158C
kit to the mounting lugs as shown by the red arrows in the figure below.
2. Install the cross small pan head screws M4x8 (12pcs) in the IT-E158C kit to
both sides of the instrument as shown by the red arrows in the figure below.
说明

Installation Instruction
3. Fasten the cassette nut combination (4pcs) in the IT-E158C kit to the rear
mounting lug connector (2pcs) and the square hole strip in the middle of
the side of the ITECH cabinet as shown by the red arrow in the figure
below.
The installation schematic for one side is as follows.
After this step is installed, the following figure shows.

Installation Instruction
4. Drop the instrument with the carrying handle and rear end connector
installed into the cabinet and fasten the cassette nut combination (4pcs) to
the front mounting ears of the instrument and the cabinet.
Note: When there is no pallet load-bearing inside the cabinet, it is
recommended that at least two people cooperate in the operation,
with one person making sure to hold the instrument while the others
lock the screws and other operations.
5. Fasten the hexagonal socket head combination screws M5x12 (4pcs) as
shown by the red arrows in the figure below to the rear mounting lug
connections already installed on the cabinet and already installed on the
rear of the instrument.
Installation into non-ITECH cabinets (select IT-E158D)
When installed into a non-ITECH cabinet, the installation method is shown

Installation Instruction
below.
1. Fasten the cross countersunk head screws M4x10 (4pcs) in the IT-E158D
kit to the mounting lugs as shown by the red arrows in the figure below.
2. Install the cross small pan head screws M4x8 (12pcs) in the IT-E158D kit to
both sides of the instrument as shown by the red arrows in the figure below.
3. Fasten the cassette nut assembly (4pcs) to the rear mounting lug
connectors (2pcs) and the square hole strip on the side of the cabinet as
shown by the red arrow in the figure below.
4. Drop the instrument with the carrying handle and rear end connector
installed into the cabinet and fasten the cassette nut combination (4pcs) to

Installation Instruction
the front mounting ears of the instrument and the cabinet.
Note: When there is no pallet load-bearing inside the cabinet, it is
recommended that at least two people cooperate in the operation,
with one person making sure to hold the instrument while the others
lock the screws and other operations.
5. Adjust the length of the retractable kit according to the depth of your
cabinet.
6. Fasten the hexagonal socket head combination screws M5x12 (4pcs) to
the rear mounting lug connections already installed on the cabinet and
already installed on the rear of the instrument as shown by the red arrows
in the figure below.

Installation Instruction
After the installation is completed, the side is shown below (shortest and
longest).
2.3 Installation of two instruments
Installation into ITECH cabinet (select IT-E158A)
When installed into the ITECH cabinet, the installation method is shown below.
1. Fasten the cross countersunk head screws M4x10 (4pcs) in the IT-E158A
kit to the mounting lugs as shown by the red arrows in the figure below.