Jinko JK628 User manual

User’s Guide
JK628
HANDHELD LOW RESISTANCE TESTER
Changzhou Jinailian Electronic Technology Co., Ltd
No.C3,Building 22,New Impetus Pioneering Center, No.1,Qingyang North Road,Tianning
District,Changzhou,Jiangsu,CN
TEL: [phone] FAX: [phone]
https://jinailian.en.alibaba.com www.jk17.com www.jaldz.com

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Statement
In accordance with international copyright law, the content of this article may not be reproduced in
any form without the prior permission and written consent of the state-wide JinAilian Electronic
Technology Co., Ltd.
Security Information
WARNING DANGER: To avoid possible electric shock and personal safety, follow
these guidelines.
Disclaimer
Before you start using the instrument, please read the following safety information carefully. Jinko
Instruments will not bear any responsibility for personal safety and property damage caused by the
user's failure to comply with the following terms.
Instrument grounding
To prevent the risk of electric shock, connect the power ground wire.
Do not use the instrument in explosive atmospheres
Do not use the instrument in a flammable or explosive atmosphere, steam or dusty environment.
Using any electronic device in such an environment is a personal risk.
Do not open the instrument case
Non-professional maintenance personnel must not open the instrument case in an attempt to repair
the instrument. There is still a clean charge that has not been discharged for a period of time after the
instrument has been switched off, which may cause an electric shock hazard to personnel.
Do not use the instrument in a manner not specified in this manual
Outside the range, the protection provided by the instrument will be invalidated.
Warning: Do not apply DC voltage or current to the test terminal, otherwise it will damage
the instrument.
Safety sign: equipment is protected by double insulation or reinforced insulation
Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96 / EC
Do not throw away in the trash

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CERTIFICATION, LIMITED WARRANTY, & LIMITATION OF LIABILITY
Jinailian Electronic Technology Co., Ltd （shortened form Jinailian）certifies that
this product met its published specifications at the time of shipment from the factory.
Jinailian further certifies that its calibration measurements are traceable to the People’s
Republic of China National Institute of Standards and Technology, to the extent
allowed by the Institution’s calibration facility or by the calibration facilities of other
International Standards Organization members.
This Jinailian instrument product is warranted against defects in material and
workmanship for a period corresponding to the individual warranty periods of its
component products. The warranty period is 1 year and begins on the date of
shipment. During the warranty period, Jinailian will, at its option, either repair or
replace products that prove to be defective. This warranty extends only to the original
buyer or end-user customer of a Jinailian authorized reseller, and does not apply to
fuses, disposable batteries or to any product which, in Jinailian’s opinion, has been
misused, altered, neglected or damaged by accident or abnormal conditions of
operation or handling.
For warranty service or repair, this product must be returned to a service facility
designated by Jinailian. The buyer shall prepay shipping charges to Jinailian and
Jinailian shall pay shipping charges to return the product to the Buyer. However, the
Buyer shall pay all shipping charges, duties, and taxes for products returned to
Jinailian from another country.
Jinailian warrants that its software and firmware designated by Jinailian for use with
an instrument will execute its programming instruction when properly installed on that
instrument. Jinailian does not warrant that the operation of the instrument, or software,
or firmware, will be uninterrupted or error free.
The foregoing warranty shall not apply to defects resulting from improper or
inadequate maintenance by the Buyer, Buyer-supplied software or interfacing,
unauthorized modification or misuse, operation outside the environmental
specifications for the product, or improper site preparation or maintenance.
THIS WARRANTY IS BUYER’S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF
ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE. Jinailian SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
OR CONSEQUENTIAL DAMAGES OR LOSSES, INCLUDING LOSS OF DATA, WHETHER
ARISING FROM BREACH OF WARRANTY OR BASED ON CONTRACT, TORT, RELIANCE
OR ANY OTHER THEORY.
Changzhou Jinailian Electronic Technology Co., Ltd.
August 2019/Rev.A1

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Contents
Statement................................................................................................................................................1
Security Information..............................................................................................................................1
Limited Warranty and Liability .............................................................................................................2
Table of Contents....................................................................................................................................3
1.Installation and Setup Wizard .............................................................................................................5
1.1 Packing List .............................................................................................................................5
1.2 Power requirements .................................................................................................................5
1.3 Operating environment.............................................................................................................5
1.4 Cleaning...................................................................................................................................5
1.5 Replace the battery...................................................................................................................5
1.6 Adjusting Support.....................................................................................................................6
2.Overview ............................................................................................................................................7
2.1 Introduction..............................................................................................................................7
2.2 Main specifications..................................................................................................................7
2.3 Main functions..........................................................................................................................7
2.3.1 Calibration function...........................................................................................................7
2.3.2 Comparator function (sorting function)............................................................................7
2.3.3 System Settings.................................................................................................................8
2.3.4 Remote Control.................................................................................................................8
3. Beginning ..........................................................................................................................................8
3.1 Front Panel...............................................................................................................................8
3.2 Interface Panel .........................................................................................................................9
3.3 Using an external power supply...............................................................................................9
3.3.1 Battery charging function......................................................................................................9
3.4 Startup......................................................................................................................................9
3.5 Connection of test terminal....................................................................................................10
3.5.1 Test fixtures and cables...............................................................................................10
4. [Meas] Measurement display...........................................................................................................10
4.1 <Measurement Display> page................................................................................................10
4.1.1 Measure [Trigger]........................................................................................................11
4.1.2 Measurement [Range].................................................................................................12
4.1.3 Measurement [Mode]..................................................................................................13
4.1.4 Measurement [Speed]..................................................................................................14
4.1.5 Measurement [Comparison]........................................................................................14
4.1.6 Measurement [Beep]...................................................................................................14
4.1.7 Information field on <Measurement Display> page...................................................15
4.1.8 Task bar on <Measurement Display> page.................................................................15
4.1.9 Icon of <Measurement Display> page........................................................................15
4.2 Clearing the short circuit........................................................................................................15
4.2.1 [Short Circuit] Cleared................................................................................................16
4.3 <Comparer Settings> page.....................................................................................................16
4.3.1 Comparator [Method]..................................................................................................17
4.3.2 Comparator [Nominal]................................................................................................17

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4.3.3 Comparator [lower limit], [upper limit]......................................................................18
4.4 <File Settings> page...............................................................................................................18
4.4.1 [File]............................................................................................................................19
4.4.2 [File Name].................................................................................................................19
5. [Setup] setting display......................................................................................................................20
5.1 <Setting Display> page..........................................................................................................20
5.1.1 Setting [Temperature Compensation]..........................................................................20
5.1.2 Setting [Temperature Coefficient]...............................................................................21
5.1.3 Setting the [Reference temperature]............................................................................21
5.1.4 Setting [Range Delay].................................................................................................21
5.1.5 Set [Calculate].............................................................................................................21
5.1.6 Set [electrode constant]...............................................................................................22
5.2 Temperature Calibration.........................................................................................................22
5.3 Temperature reset...................................................................................................................22
6. System configuration........................................................................................................................23
6.1 <System Configuration> page................................................................................................23
6.1.1 System [Language]......................................................................................................24
6.1.2 System [Date], [Time].................................................................................................24
6.1.3 System [Backlight]......................................................................................................24
6.1.4 System [reduce brightness].........................................................................................25
6.1.5 System [touch screen].................................................................................................25
6.1.6 System [Baud rate]......................................................................................................25
6.1.7 System [U disk timing]...............................................................................................26
6.2 <System Information> page...................................................................................................26
7. Specifications...................................................................................................................................27
7.1 Technical specifications..........................................................................................................27
7.1.1 High current test..........................................................................................................27
7.1.2 Low current test...........................................................................................................28
7.2 Specifications.........................................................................................................................28

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1.Installation and setup wizard
Thank you for purchasing our products! Please read this chapter carefully before use. The
following descriptions are mainly based on JK628.
In this chapter you will learn the following:
● Packing list
● Power requirements
● Operating environment
● cleaning
● Replace the battery
● Adjust support
1.1 packing list
Before using the instrument officially:
1. Check whether the appearance of the product is damaged or scratched;
2. Check the instrument packing list for missing accessories.
If it is damaged or the accessories are insufficient, please contact Jinke Instrument Sales
Department or the distributor immediately.
1.2 Power requirements
The instrument can only use our special AC power adapter and lithium battery.
AC power adapter:
Input voltage: 90V-260VAC, 49Hz ~ 62Hz
Power: 10VA max
Warning: Do not use power adapters of other specifications. The instrument can only use our
company's power supply and rechargeable lithium battery!
1.3 Operating environment
JK628 must be used under the following environmental conditions:
Temperature: 0 ℃～55 ℃,
Humidity: less than 70% RH at 23 ℃
Altitude: 0 ~ 2000 meters
1.4 Cleaning
Do not clean the inside of the instrument.
Note: Do not use solvents (alcohol or gasoline, etc.) to clean the instrument.
Use a clean cloth and a little water to clean the case and panel.
1.5 Replace the battery
The instrument has a built-in rechargeable lithium battery. The battery is already installed in the
battery compartment of the instrument when it leaves the factory. If you replace the battery, follow
these steps
Figure 1-1 Replacing the battery

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1. Use a screwdriver to loosen the screws on the battery cover and remove the battery cover.
2. Remove the plug from the old battery and plug in the new battery, paying attention to the
direction of the plug.
3. Insert the new battery into the battery compartment, close the battery cover, and tighten the
screws.
1.6 Adjusting the support
The instrument supports two positions for user convenience: 60 degrees and 45 degrees.
Use the 45-degree position for more stable instrument support.
Figure 1-2 Support position at 60 degrees
Fold the bottom of the support slightly upward to achieve a 45-degree support position.

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2. Overview
In this chapter you will learn:
● Introduction
● Main specifications
● Main functions
2.1 Introduction
Thank you for purchasing the JK628 Handheld DC Low Resistance Tester.
Jinke Instrument JK628 handheld DC low resistance tester is a high-precision, wide-range,
portable handheld instrument controlled by a high-performance 32-bit ARM microprocessor. The
built-in large-capacity lithium battery enables long-term passive component testing in any occasion
Accurate and convenient measurement.
JK628 is equipped with a 5.6 "high-definition color LCD display. The large font display makes
it easier for you to read data. The instrument can test resistances from 10μΩ ～200KΩ with a
maximum display of 20,000. It has a current test mode that can adapt to different requirements.
Mini-USB communication interface for remote control and data acquisition and analysis.
JK628 handheld low resistance tester can measure a variety of high, medium and low value
resistors. JK628 handheld low resistance tester is widely used in various switch contact resistances;
connector plug resistance; relay wire package and electric shock resistance; transformer, inductor,
motor, deflection coil winding resistance; wire resistance; car, boat, aircraft Metal riveting resistors'
printed board lines and hole resistance
2.2 Main specifications
JK628 hand-held series of technical specifications, including the basic technical indicators of
the instrument and the scope of the instrument test allowed. These specifications are achievable at
the factory.
● Basic accuracy: 0.1%
● Maximum display digits 20000 numbers
● Seven-range automatic, manual or nominal test-provides 10μΩ ～200KΩ test range.
● High-speed and high-precision test at a test speed of 3 times per second can still maintain
0.1% accuracy and a maximum reading of 20,000.
● Four-terminal test
● Provide high current and low current test modes-different test modes can be suitable for test
pieces of different properties.
● Display-5.6 "inch true-color LCD with simultaneous display of measurement values   and
sorting results (GD / NG).
2.3 Main functions
2.3.1 Calibration function
Full-scale short-circuit clear function.
2.3.2 Comparator function (sorting function)
Built-in sorting data for GD / NG judgment of DUT.
● Comparison method:
Absolute tolerance ± TOL sorting: The absolute deviation between the measured value and the

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nominal value is compared with the limit of each file.
Percent Tolerance TOL Sorting: The percentage deviation between the measured value and the
nominal value is compared with the limit of each file.
Sequential comparison sorting: the measured value is directly compared with the upper and
lower limits
● Sound setting:
Users can set OFF / GD / NG sound according to their needs.
2.3.3 System Settings
1. Keyboard lock function
2. Switch between Chinese and English
3. Date and time settings
4. Baud rate setting
5. Backlight setting
6. Automatic shutdown time setting
7. U disk timing
2.3.4 Remote control
Supports a maximum baud rate of 115200bps, compatible with SCPI protocol and ASCII
transmission.
3. Get started
In this chapter you will learn:
● front panel
● Interface panel
● Use of external power
● boot
● Test connection
3.1 front panel
Table 3-1 Front panel function description
Front panel
No.
Function
1
Task bar function keys
2
cursor keys
3
test terminal
4
Power switch
5
ESC Enter
6
LCD display window

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3.2 Interface Panel
Figure 3-1 Interface panel function description
1: external power supply and charger interface
2. Mini-USB communication interface for remote communication.
3. RS485 expansion interface.
4.USB interface can save data.
3.3 Use of external power
The instrument comes standard with a power adapter.
In addition to supplying power to the instrument, this power supply also charges the lithium battery inside
the instrument. Therefore, the power adapter cannot be replaced. It is recommended to use our company's
special power supply.
Figure 3‑2 Connecting the external power adapter to the instrument
Plug the power adapter into the AC adapter input jack on the instrument.
3.3.1 Battery charging function
If the battery is not fully charged, the instrument's charging circuit will automatically start to charge the
internal lithium battery after the power adapter is plugged in, and the built-in indicator of the instrument's power
key will light up to indicate that charging is in progress. This indicator will light up even after the instrument is
turned off, until it goes out when the battery is fully charged.
3.4 Turn on the instrument
The keys are light, touch keys. Press the power key to turn the instrument on or off.

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3.5 Test connection
The instrument uses four-terminal tests to improve accuracy.
Before testing, please insert the test lead of the instrument into the instrument jack.
Figure 3-4 Connect the test terminal
Warning: Do not apply DC voltage or current to the test terminal, otherwise it will damage the instrument.
Warning: When testing a charged device, make sure that its charge is discharged before measuring.
3.5.1 Test fixtures and cables
According to our company's long-term survey of users, user-made or other company's test fixtures or test
cables may cause incorrect measurement results. We recommend that you use our test fixtures or test cables.
The contact springs of our test fixtures are silver-plated or gold-plated, which will cause abrasion of the
electroplated surface during long-term work (for example, 1 ~ 2 years). It is recommended that you replace the
new fixtures in time when you find obvious deviations in several tests.
4. [Meas] Measurement display
In this chapter you will learn about all measurement display functions:
● <Measurement display> page
● Short circuit clear
● <comparator settings> page
4.1 <Measurement Display> page
No matter what page you are on, you only need to press the [Display] shortcut key to enter the
<Measurement Display> page.
The <Measurement Display> page mainly highlights the measurement results. When comparison is on,
sorting results and sorting parameters are displayed.
There are 6 common functions that can be set on this page, including:
● Trigger – trigger method
● Range-range setting.
● Mode-current mode
● Speed-measurement speed
● Compare-sorting settings
● Slam – Slam settings

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Note: The measurement data and sorting results are only valid on the <Measurement Display> page.
Figure 4-1 <Measurement Display> page
4.1.1 Measurement [Trigger]
The instrument has 3 trigger modes: internal trigger and manual trigger.
Table 4‐1 Trigger Mode Description
■Set the trigger mode steps:
Trigger method
Description
Internal
also called continuous test. The trigger signal is continuously tested by the
instrument according to the inherent cycle.
Manual
Each time the [Enter] key is pressed, the instrument performs a
measurement cycle, and the instrument is in a waiting state at other times.
Step 1
Select the [Display] function key in the upper column to switch to
the <Measurement Display> page
Step 2
Use the cursor keys to select the [Trigger] field
Step 3
Use [Enter] to select the trigger mode
Function key
Function
Internal
Manual trigger mode
Manual
Manual trigger mode

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4.1.2 Measurement [Range]
The instrument has 3 measuring ranges: automatic measuring range, manual measuring range and nominal
measuring range.
Table 4-2 Test range description
Table 4-3 Range and corresponding measurement range
Note: For detailed specifications of JK628, please refer to the table on the specification page.
■Steps for setting test range:
Step 1
Select the [Measurement Display] function key in the upper bar to
switch to the <Measurement Display> page
Step 2
Use the cursor keys to select the [Range] field
Step 3
Use [Enter] to select the range mode
Function key
Function
Automatic range
The instrument will automatically select the
range
maintain
The instrument is locked at the current range
Nominal range
The instrument will select the best range
Way
Description
Advantages
Disadvantages
Automatic
The instrument automatically
selects the best test range
according to the resistance value,
and the range number in the
range field is set automatically.
The user does not need
any participation.
The automatic range
needs to predict the
range, and the test
speed will be lower
than the manual
range mode.
Manual
The instrument will always use
the user-specified range for
testing
fastest test speed
Users need to
participate in range
selection
Nominal
The instrument will automatically
select the best range for the test
based on the nominal value.
The best way to sort the
test. The fastest speed.
Only suitable for
sorting test
Range number
Range definition
Resistance measurement range
7
200kΩ
20kΩ ～200kΩ
6
20kΩ
2kΩ ～20kΩ
5
2kΩ
200Ω ～ 2kΩ
4
200Ω
20Ω ～ 200Ω
3
20Ω
2Ω ～ 20Ω
2
2Ω
200mΩ ～ 2Ω
1
200mΩ
20mΩ ~ 200mΩ
0
20mΩ
0 ～ 20mΩ

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based on the nominal value
Increase +
increase the range number and change the
range to manual range
Decrease-
Decrease the range number while changing
the range to manual range
When the range is automatic, the instrument performs range prediction every measurement
cycle, so the test speed is slightly slower than the locked range. Moreover, during automatic measurement,
frequent range changes will cause slow response. Usually when the instrument is used for sorting measurement,
the automatic range method is not suitable. For sorting users, please select the nominal range method.
4.1.3 Measurement [Mode]
The instrument has 2 current modes: high current and low current modes. (AT518L has no low current
mode).
Table 4-4 Relationship between range and current mode
Note: For the parameters of JK628 working current and accuracy, please refer to the table on the
specification page.
■Steps for setting current mode:
Range number
High current mode
Low current mode
0
100mA
100mA
1
100mA
100mA
2
100mA
10mA
3
10mA
1mA
4
1mA
100uA
5
1mA
100uA
6
100uA
10uA
7
10uA
10uA
8
/
/
9
/
/
Step 1
Select the [Measurement Display] function key in the upper bar to switch
to the <Measurement Display> page
Step 2
Use the cursor keys to select the [Mode] field
Step 3
Use the [Enter] function key to select the current mode
Function key
Function
High current mode
High current measurement mode
Low current mode
Low current measurement mode

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4.1.4 Measurement [Speed]
The instrument provides 3 sampling rates: slow, medium, and fast. The slower the speed, the more accurate
and stable the test results (AT518L only has a slow speed).
■Steps for setting the sampling rate:
4.1.5 Measurement [Comparison]
The relevant parameters of the comparator are set on the <comparator settings> page. This page only sets
the comparator on or off.
■Steps for setting sorting status:
.
4.1.6 Measurement [Beep]
Sound settings include: turn off sound, turn sound on.
■Steps for setting the sound
Step 1
Select the [Measurement Display] function key in the upper bar to
switch to the <Measurement Display> page
Step 2
Use the cursor keys to select the [Speed] field
Step 3
Use [Enter] to select the sampling rate
Function key
Function
Slow
Measurement slow, about 3 times / second
Medium
speed Measure medium speed, about 15
times / second
Fast
measurement fast, about 30 times / second
Step 1
Select the [Measurement Display] function key in the sidebar to
switch to the <Measurement Display> page
Step 2
Use the cursor keys to select the [Compare] field
Step 3
Use the sidebar function keys to select the comparison status
Function key
Function
On
Only the comparison results are displayed on the
<Measurement Display> page, and the related
parameters of the comparison are displayed
below
Off
Close the <Measurement Display> page to
compare the results and related parameters,
other pages will not process
Step 1
Select the [Measurement Display] function key in the sidebar to
switch to the <Measurement Display> page
Step 2
Use the cursor keys to select the [Compare] field
Step 3
Use the sidebar function keys to select the beep state
Function key
Function
On
The beep is turned on

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4.1.7 Information bar on <Measurement Display> page
Below the instrument test results, the instrument also displays the sorting results and related parameters.
These information are modified in the <Compare Settings> main page and are here for reference.
All pages include a status bar and task bar. When you use the cursor keys to make a selection, the status bar
will prompt related help information, but you cannot operate the status bar. When using Mini-USB communication,
characters can be printed on the status bar.
4.1.8 Task bar on <Measurement Display> page
Below the status bar is the task bar, which includes:
● Hold-the data remains unchanged and the instrument stops measuring
● System-Switch to the <System Configuration> page
● Key lock – locks the keyboard, but does not affect the measurement on the <Measurement Display> page
● Time-show time
4.1.9 Icon of <Measurement Display> Page
Table 4-5 Icon Functions
.
4.2 Short-circuit clear
Press the [Display] shortcut key, and then press the [Short Circuit] function key in the upper bar to clear the
short circuit.
Users can complete the short-circuit zero calibration of the full range or single range under this page to
compensate for external interference factors.
Off
The beep is turned off
Icon
Function
Currently used internal power source, lithium battery.
External power is currently being used. At this time, the side light on the
observation screen: On means charging is on; Off means charging is
complete. Or observe the battery icon: there is a change in charge
indicating that charging is in progress; no change indicates that charging
is complete.
USB flash drive is currently inserted
H
The current data is held
T
Temperature compensation is on (not available in AT518L).
20.0℃(example)
Measured temperature (not available in AT518L).

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In order to achieve the accuracy specified by the technical indicators, short-circuit clearing is
necessary. Replace the test fixture or test cable. Short-circuit again. When the temperature changes greatly, please
perform short circuit reset in time.
Before starting to zero, please short the test clip as follows.
Figure 4-2 Correct test terminal short circuit method
The following example is wrong!
4.2.1 [Short circuit] Clear
The short-circuit calibration function of the instrument compensates for any remaining resistance (R) that
may exist from the calibration surface determined by the length of the test cable to the connection point of the
device under test.
■Short-circuit clearing steps:
4.3 <Comparator Settings> page
Press the [Display] shortcut key to enter the <Measurement Display> page, press the [System] function key in
the upper bar to enter the <System Settings> page, and press the [Comparator] function key in the upper bar to
enter the <Comparer Settings> page
The <comparator settings> page helps users to configure the parameters related to the sorting results. This
page can set 6 common functions, including:
● Comparison-sorting settings (refer to <Measurement Display> page)
● Beep – Beep settings (refer to <Measurement Display> page)
● Method-Sorting method
● Nominal-Enter the nominal value
● Lower Limit-Enter the lower limit
Step 1
Press the [Display] shortcut key to enter the measurement <measurement
display> main page
Step 2
Press the [Short Circuit] function key in the upper side bar again, and it will
prompt: “Clearing”
When cleared, there will be a progress bar at the bottom of the page
After the zeroing is completed, the progress bar disappears.

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● Upper limit-enter the upper limit
Figure 4-4 <Comparator Settings> page
4.3.1 Comparator [Method]
The instrument's built-in comparator has three comparison methods: absolute value, relative value, and direct
reading value.
■ Set the comparison mode steps:
Step 1
Press the [Display] shortcut key to enter the measurement <measurement
display> main page.
Step 2
Press the [System] function key in the upper bar to switch to the <System
Settings> page.
Step 3
Press the [Comparator] function key in the upper bar to switch to the
<Comparator Settings> page.
Step 4
Use the cursor keys to select the [Compare] field
Step 5
Use the [ENTER] function key to select the comparison mode.
Function key
Function
Absolute value Δ
measured value-nominal value
percentage%
(Measured value-nominal value) / nominal value ×
100%
Direct Reading SEQ
Compare Direct Reading Measurements with
Upper and Lower Limit Ranges
4.3.2 Comparator [Nominal]
The absolute value and relative value comparison method must enter a positive nominal value. The direct
reading value comparison method does not consider the nominal value, and it does not matter whether it is set or
not.
■ Enter nominal value steps:

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Step 1
Press the [Display] shortcut key to enter the measurement <measurement
display> main page
Step 2
Press the [System] function key in the upper bar to switch to the <System
Settings> page
Step 3
Press the [Comparator] function key in the upper bar to switch to the
<Comparator Settings> page.
Step 4
Use the cursor keys to select the [Nominal] field
Step 5
Use the numeric keys to enter the data. After the input is completed and the
unit is selected, press the [enter] function key.
4.3.3 Comparator [Lower Limit], [Upper Limit]
Regardless of the comparison method, the upper limit should be greater than the lower limit. Regardless of
whether the absolute or relative sorting method is selected, in general, the nominal value is between the lower limit
and the upper limit, that is, the upper limit enters a positive value and the lower limit enters a negative value.
● Absolute value Δ — input the absolute value of the measurement parameter in the comparison mode, the
unit is the measurement parameter unit.
● Relative value Δ% — Enter the relative value of the measurement parameter in comparison mode, the unit
is%.
● Direct reading value SEQ — Enter the direct reading value of the measurement parameter in the comparison
mode. The unit is the measurement parameter unit.
■ Enter the upper and lower limit steps (refer to the step of entering the nominal value)
4.4 <File Settings> page
The measurement data of the instrument can be saved in the U disk at regular time for easy viewing in the
Step 1
Press the [Display] shortcut key to enter the measurement <measurement
display> main page
Step 2
Press the [System] function key in the upper bar to switch to the <System
Settings> page
Step 3
Press the [Comparator] function key in the upper bar to switch to the
<Comparator Settings> page.
Step 4
Use the cursor keys to select the [Lower Limit] field
Step 5
Use the numeric keys to enter the data. After the input is complete, press the
[enter] function key.
The relative value Δ% method does not need to select a unit magnification,
please enter a percentage value.
Absolute value Δ and direct reading value SEQ method Please use the sidebar
function keys to select the unit.
Step 6
Use the cursor keys to select the [Lower Limit] field
Step 7
Use the numeric keys to enter the data. After the input is complete, press the
[enter] function key.

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computer.
Insert the USB flash drive into the USB-DISK slot on the top of the instrument, press the [Display] key, and
then press the function key [System] to enter the <System Settings> page, and then press the function key [File
Settings] to enter the <File Settings> page
Users can complete the setting of U disk files under this page.
There are 16 record files to choose from. Use the function keys [Previous Page] and [Next Page] to turn pages.
The following settings are valid only after a USB flash drive is inserted.
Figure 4-5 <File Settings> Page
4.4.1 [File]
■ To create a new file:
4.4.2 [File name]
Before recording, you need to select the file to be saved and open it.
■ File operation steps:
Step 1
Press the [Display] shortcut key to enter the measurement <measurement
display> main page
Step 2
Press the [System] function key in the upper bar to switch to the <System
Settings> page
Step 3
Press the [File Settings] function key in the upper bar to switch to the <File
Settings> page
Step 4
Use the cursor keys to select the [New File] field
Step 5
Use function keys to select
To create a new file, use the function keys and numeric keypad to enter the file
name and press [Enter] to end. The file format is * .csv.
Step 1
Press the [Display] shortcut key to enter the measurement <measurement display> main
page.
Step 2
Press the [System] function key in the upper bar to switch to the <System Settings>