Jinko JK2520B User manual

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User’s Guide
JK2520B/JK2520C
Battery Internal Resistance Tester
43/4 bit AC resistance reading，6 bit DC voltage readings
Resistance test range：0.000mΩ~33.000kΩ
Voltage test range：0.00000V~120.000VDC
0.2% resistance accuracy, 0.01% voltage accuracy.
Test speed up to 145 times / sec.
HANDLER interface（Optional 18 gear sorting）
RS-232C inerface
JinAiLian Electronic Technology Co.,Ltd
C3, No.22 Building, New Impetus Pioneering
Center, No.1, North Qingyang Road, Tianning
District, Changzhou City
Tel：[phone]
Fax：[phone]
Http://www.jaldz.com
Http://www.jk17.com
Jinko Sales service e-mail:[email protected]
It is a registered trademark of Technical support e-mail :m[email protected]
JinAiLian Electronic Technology Co.,Ltd

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Security needs
warning DANGER ：When you find the following abnormal conditions, please
terminate the operation immediately and disconnect the power cord. Contact and repair
the Jinke instrument sales department immediately. Otherwise, it will cause a fire or
potential danger to the operator.。
Abnormal operation of instrument
Abnormal noise, odor, smoke or Flash occurred during operation.
During operation, the instrument produces high temperature or electric
shock.
The power cord, power switch or power socket is damaged.
Impurities or liquids flow into the instrument.
security information
warning danger：To avoid possible electrical shock and personal safety, follow
these guidelines.
Disclaimer: Users should read the following safety information carefully before starting to
use the instrument. The company will not be liable for any personal and property losses
caused by non-compliance with the following provisions.
Instrument grounding: to prevent the danger of electric shock, please connect the power
ground.
Do not use the instrument in an explosive gas environment: Do not use the instrument in
an inflammable and explosive gas, steam or dust environment. The use of any electronic
device in such an environment is an adventure for personal safety.
Do not turn on the case: non professional maintenance personnel can not open the
instrument shell to try to repair the instrument. The instrument still has no clean charge
released for a period of time after shutdown, which may cause electric shock hazard to the
human body.
Do not use damaged instruments: if the instrument has been damaged, the danger will be
unpredictable. Please disconnect the power cord, do not use it again, and do not attempt
to repair it yourself.

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Do not use abnormal instruments: if the instrument is not working properly, its danger is
unpredictable, please disconnect the power cord, can not be used again, do not try to
repair themselves.
Do not use the instrument in a manner specified in this specification: beyond the scope,
the protection provided by the instrument will fail.
Limited warranty and scope of liability
Changzhou JinAiLian Electronic Technology Co.,Ltd (hereinafter referred to as JinAiLian )
to ensure that you buy each JK2520B/JK2520C in quality and measurement are fully
qualified.This warranty does not include fuses and damage caused by negligence, misuse,
pollution, accident or abnormal use. This warranty applies only to the original purchaser
and is not transferable.
From the date of shipment,JinAiLian offers 90 Day Warranty and two year free warranty,
which also includes VFD or LCD. During the 90 day warranty period, the replacement
clause is terminated due to damage caused by improper user operation.During the repair
period, the equipment was damaged due to improper operation of users, and the
maintenance cost was borne by the users.Two years later, until the instrument is life-long,
JinAiLian will provide maintenance by charging. For VFD or LCD replacement, the cost is
charged at the current cost price.
If product damage is found, please contact JinAiLian to get information that you agree to
return or replace.After that, please send the product back to the seller. Please be sure to
explain the cause of the product damage, and prepay the postage and the premium to the
destination.During the warranty period, the JinAiLian will be responsible for the
transportation cost of the mail for repair or replacement of the product.Repair of non
warranty products，Jin Ai Lian will evaluate the cost of repairs for non-warranty products.
Maintenance will be performed only with your consent. All costs incurred by the
maintenance will be borne by the user, including shipping costs for return mail.
This guarantee is the only guarantee for JinAiLian and the only compensation for
youThere are no express or implied warranties (including warranties of suitability for a
particular purpose) and all other warranties are explicitly denied.Jin Ai Lian or any other
agent has not given any oral or written expression to establish or in any way extend the
scope of this warranty.Jin Ai Lian will not be liable for any particular, indirect, incidental or

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consequential damage or loss (including loss of information) caused by any reason
outside the scope of the specification.If one of these clauses contravenes local laws or
because certain jurisdictions do not permit the exclusion or restriction of implied
warranties, the local laws and regulations prevail, then this clause may not apply to you.
However, the ruling of this clause does not affect the validity and enforceability of other
provisions.

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Catalog
Safety instruction ..........................................................................................................1
Security information.......................................................................................................1
Limited warranty and scope of liability...........................................................................2
Catalog..........................................................................................................................3
List of Figures ...............................................................................................................6
Table list .......................................................................................................................6
1.Installation and setup wizard .....................................................................................7
1.1 Packing list......................................................................................................7
1.2 Power requirements........................................................................................7
1.3 Operating environment....................................................................................7
1.4 Clean...............................................................................................................7
2.Summary....................................................................................................................7
2.1 Introduction...................................................................................................... 7
2.2The main function............................................................................................. 8
2.2.1 Test frequency.......................................................................................... 8
2.2.2 Range .......................................................................................................8
2.2.3 Test speed................................................................................................ 8
2.2.4 Trigger mode.............................................................................................9
2.2.5 Basic accuracy......................................................................................... 9
2.2.6 The maximum reading.............................................................................. 9
2.2.7Calibration function.....................................................................................9
2.2.8 Comparator function (sorting function)......................................................9
2.2.9 System settings.........................................................................................9
2.2.10 Interface .................................................................................................9
3. Start.........................................................................................................................10
3.1 the front panel..................................................................................................10
3.1.1 Front panel description................................................................................10
3.1.2 Rear panel...................................................................................................10
3.2 Power up start.................................................................................................11
3.2.1 starting up...................................................................................................11
3.3 Connection of test end.......................................................................................11
4.[Meas] Measuring main page...................................................................................11
4.1 < measurement display > page......................................................................11
4.1.1 Trigger mod.............................................................................................12
4.1.2 Range....................................................................................................................12

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4.1.3Test [speed]..............................................................................................14
4.1.4 [Beep] set up............................................................................................14
4.2 Status bar........................................................................................................14
4.2.1 Icon .........................................................................................................15
4.2.2 [Browse data] function keys ....................................................................15
4.3 [Browse data > page ......................................................................................15
5. [Setup] setting page ............................................................................................15
5.1 Measurement setting .....................................................................................16
5.1.1 Comparator settings.................................................................................16
5.1.2【Nominal value】input.............................................................................17
5.1.3[ Lower limit] and[ upper limit] settings......................................................17
5.2 Short circuiting zero .......................................................................................17
6. system configuration..........................................................................................18
6.1 System configuration page ............................................................................18
6.1.1 Change system language【LANGUAGE】...........................................18
6.1.2 Modification date and time ......................................................................18
6.1.3 Account Settings......................................................................................19
6.1.4 [Beep] set up............................................................................................20
6.1.5 【baud rate】set up .............................................................................20
6.1.6Communication [instruction handshake] switch........................................20
6.1.7 Communication [result delivery] mode.....................................................21
6.2System information page ................................................................................21
7. Processor (Handler) interface<JK2520B> ..........................................................22
7.1 Terminal and signal........................................................................................22
7.2 Connection mode ..........................................................................................23
8. Remote communication.......................................................................................24
8.1 RS-232C .......................................................................................................24
8.1.1 RS232C Connect.....................................................................................25
8.2 handshake protocol........................................................................................25
8.3 SCPI language...............................................................................................26
9. SCPI Command Reference................................................................................. 26
9.1 Command string parsing................................................................................26
9.1.1 Command resolution rule.........................................................................26
9.1.2 Symbolic conventions and definitions .....................................................27
9.1.3Command tree structure...........................................................................27
9.2 Command and parameters.............................................................................27

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9.2.1 Command ...............................................................................................27
9.2.2 parameters................................................................................................27
9.2.3 Separators.................................................................................................28
9.3 command reference.........................................................................................28
9.4 DISPlay Display subsystem.............................................................................29
9.4.1 DISPlay:PAGE ..........................................................................................29
9.4.2 DISP:LINE ................................................................................................29
9.5 FUNCtion subsystem. ..................................................................................29
9.5.1 FUNCtion:RANGe ....................................................................................30
9.5.2 FUNCtion:RANGe:MODE.........................................................................30
9.5.3FUNCtion:RATE .......................................................................................30
9.6 COMParator subsystem. .............................................................................30
9.6.1 COMParator:RMODe ...............................................................................31
9.6.2COMParator:VMODe.................................................................................31
9.6.3 COMParator:BEEP ..................................................................................31
9.6.4 COMParator:TOLerance:RNOMinal ........................................................31
9.6.5 COMParator:TOLerance:VNOMinal ........................................................32
9.6.6 COMParator:TOLerance:RLMT ...............................................................32
9.6.7 COMParator:TOLerance:VLMT ...............................................................32
9.7 TRIGger subsystem........................................................................................32
9.7.1 TRIGger[:IMMediate]................................................................................32
9.7.2 TRIGger:SOURce ....................................................................................32
9.7.3 TRG .........................................................................................................33
9.8 FETCh? subsystem.....................................................................................33
9.9 CORRection subsystem..............................................................................33
9.9.1 CORRection:SHORt ...............................................................................33
9.10 SYSTem subsystem..................................................................................33
9.10.1 SYSTem:LANGuage ............................................................................34
9.10.2 SYSTem:SENDmode ...........................................................................34
9.11 IDN? subsystem........................................................................................34
9.12 ERRor subsystem......................................................................................34
9.13 SAV subsystem..........................................................................................34
10. Specifications ...................................................................................................35
10.1 Technical indicators .....................................................................................35
10.2 general requirements....................................................................................36
10.3 Environmental requirements ........................................................................36

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10.4 Shape size........................................................................................................37
List of illustrations
Fig. 3-1 front panel ..................................................................................................10
Fig. 3-2 rear panel ...................................................................................................10
Figure 4-1 < measurement display> page...............................................................12
Figure 4-2 < browse data > page ............................................................................15
Figure 5-1 < Settings > page...................................................................................16
Fig. 5-2 the correct short circuit method..................................................................17
Figure 6-1 < system configuration > page ..............................................................18
Figure 6-2 < system information > page..................................................................21
Fig. 7-1 terminal.......................................................................................................22
Fig. 7-2 input end schematic diagram (Trig)............................................................23
Fig. 7-3 output schematic diagram...........................................................................24
Figure 8-1 RS-232 interface on the rear panel.........................................................25
Fig. 9-1 command tree structure...............................................................................27
Fig. 9-2 DISPlay subsystem tree..............................................................................29
Fig. 9-3 FUNCtion subsystem tree...........................................................................30
Fig. 9-4 COMParator subsystem tree.......................................................................30
Fig. 9-5 TRIGger subsystem tree..............................................................................32
Fig. 9-6 FETCh? Subsystem tree tree......................................................................33
Fig 9-7 SYSTem subsystem tree.........................................................................33
Fig. 9-8 SYSTem subsystem tree.............................................................................34
Fig. 9-9 IDN? Subsystem tree...................................................................................34
Table list
Table 4-1 range of ranges.........................................................................................13
Table 4-2 Range of change ......................................................................................13
Table 4-3 test range specification..............................................................................13
Table 7-1 output pin definition....................................................................................22
Table 7-2 definition of input pin..................................................................................22
Table 7-3 definition of power terminal pin..................................................................23
Table 8-1 commonly used RS-232 signals................................................................24
Table 8-2 the smallest subset of the RS-232 standard .............................................25
Table 9-1 multiplying abbreviation ............................................................................28

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1. installation and setup wizard
Thank you for buying our products. Please read this chapter carefully before using. In this
chapter, you will learn about the following:
Main function packing list
Power requirements
Operation environment
Cleaning
1.1 packing list
Before using the instrument formally, please first:
1. check whether the appearance of the product is damaged or scratched.
2. check the instrument packing list to check if the attachment is missing.
If there is any damage or insufficient accessories, please contact JinAiLian sales
department or distributor immediately.
1.2 power requirements
JK2520B can only be used in the following power supply conditions:
Voltage: 85VAC~250VAC
Frequency: 50Hz~400Hz
Warning: to prevent the danger of electric shock, please connect the power ground.
If the user changes the power cord, ensure the reliable connection of the power cord.
1.3 operation environment
JK2520B must be used under the following environmental conditions:
The temperature：0℃～55℃，
Humidity：23℃,< 70%RH
1.4 Cleaning
To prevent electric shock, remove the power cord before cleaning.
Please use a clean cloth with a little water to clean the shell and panel.
Do not clean inside the instrument.
can’t use solvents (alcohol or gasoline) to clean the instruments.

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2. Overview
In this chapter, you will learn about the following:
Introduction
major function
2.1 introduction
Thank you for purchasing JK2520B /JK2520C AC resistance tester.
JK2520B/JK2520C is a fully automatic real-time detection of miniature desktop
instruments controlled by high-performance 32 bit ARM microprocessor.The instrument
can test the resistance of 0.001mΩ~33kΩ ，the DC voltage of 0.00001V~120.000V，the
maximum resistance of 33000 display digits ，and the maximum voltage of 600 000
display digits.JK2520B/JK2520C has the characteristics of high precision, high resolution
and ultra-high speed measurement. It provides 0.2% resistance accuracy and 0.01%
voltage accuracy. The maximum measurement speed can reach 145 times per second.
The instrument is used for professional sorting function, standard Handler (PLC) interface,
output resistance HIGH / IN / LOW signal and voltage HIGH / IN / LOW signal separately.
It can completely cope with high-speed automatic sorting system to complete automatic
pipeline test, and the enhanced IO signal can directly drive power relay and signal relay.
The instrument has built-in RS-232C interface, optional USB232 interface and RS485
interface, universal data acquisition software, database function and Excel export function.
It can be effectively used in remote control and data acquisition and analysis.
The instrument uses Jinko instruments to enhance the computer remote control
instruction set, compatible with SCPI (Standard Command for Programmable Instrument
Standard Command Set), and efficiently completes remote control and data acquisition
functions.
The newly designed AC resistance testing principle can be used for almost all battery
internal resistance testing, including lithium battery, lead-acid battery, button battery and
other battery pipeline inspection. JK2520B do not support UPS online measurement,
JK2520C support UPS online measurement.
Model
Accuracy
Measuring range
Test speed
Interface
JK2520C
Resistance：1%
Voltage：0.2%
Resistance：1μΩ~33.00kΩ
Voltage：
0.0001~120.000V
145times/sec
30 times/sec,
10 times/sec
RS232
Handler
JK2520B
Resistance ：1%
Voltage ：0.3%
Resistance：
0.01 mΩ~30.00 Ω
Voltage：0.001~59.99V
10 times/sec
RS232

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Complete technical specifications refer to the tenth chapter.
2.2 main functions
2.2.1 test frequency
1kHz，frequency stability：20ppm
2.2.2 Range
JK2520C:6 range test，30mΩ~30kΩ。
JK2520B: 4 range test，30mΩ~30Ω。
Range automatic, manual and nominal.
Range nominal（Jinko new noun definition）： the instrument automatically selects the
best range based on the nominal value.
2.2.3 Test speed
The instrument is divided into four speeds: slow speed, medium speed, high speed
and high speed.
All channels are opened and manual range mode:
Slow: 1 times / sec.
Fast: 10 times / sec.
Medium speed: 30 times / sec.
High speed: 145 times / sec (JK2520C)
2.2.4 trigger mode
Internal, external, manual and remote triggers.
2.2.5 Basic accuracy
JK2520C: resistance：0.2% voltage ：0.2%
JK2520B: resistance：0.5% voltage：0.05%
2.2.6 Maximum reading
resistance：33,000
JK2520C：voltage：120.000
JK2520B：voltage：59.99
2.2.7 Calibration function
Full range short circuit "0": eliminate the influence of lead resistance.
2.2.8 Comparator function (sorting function)
The instrument has sorting function.
RHI/RNG/RLO output.
VHI/VNG/VLO output.
Comparison mode:

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Absolute value tolerances + TOL sorting:The absolute deviation between the
measured value and the nominal value is compared with the limit of each file.
Percentage tolerance TOL sorting: The percentage deviation between measured and
nominal values is compared with the limit of each file.
Sequential comparison sorting: comparison of measured values directly with upper and lower limits
2.2.9 system setup
1. data retention (DH) function
2. Beep setting
3. keyboard lockout function
4. administrators and user accounts can set password for administrators.
2.2.10 Interface
RS-232 Remote control：
The baud rate, which supports the largest 115200bps, is compatible with SCPI
protocol and ASCII transmission.
Handler interface
All optical coupling isolation, input and output with built-in pull-up resistors.
Supports internal 5V and external maximum 35V power supply.
Input: trigger signal.
Output: All sorting comparison result signals; Measuring synchronous signal (EOC);
High current drive output, direct drive relay.
3. Start
In this chapter, you will learn about the following:
Recognize the front panel, including keystrokes and test terminals.
Rear panel - introduction of power and interface information.
Power on startup - including power on self test process, instrument default value and
instrument preheating time.
Start testing - including how to connect to the test end.
3.1 Understanding the front panel
3.1. 1 Front panel description

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Front panel function description
NO
Function
1
display
2
Power switch
3
System function keys
4
Test end
5
USB disk interface
6
Qualified / unqualified
7
8
Digital keyboard
9
Cursor key
10
Display key
3.1.2 Understanding the rear panel
Fig. 3-2 rear panel
1.blowhole
2.Power socket (without fuse, fuse in instrument).

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3.2 power on startup
3.2.1 starting up
3.3 Connection of test end
If you use a random "Kelvin" test clip for testing, connect to the instrument test end in the
following manner.
High frequency head does not distinguish between Drive and Sense terminals, the
instrument will automatically convert.
At the time of measurement:
The test clip of red logo is the high end of the test end.
The black identification test folder is the low end of the test end.
To ensure the accuracy of the instrument, test it with a random "Kelvin" test clip.
Warning: it is strictly forbidden to directly connect the alternating current source and
voltage source to the test end.
4. [Meas] Measuring main page
Measurement homepage includes:
< measurement display> page related settings.
Data recording function
4.1<measurement display> page
Press the [Meas] key to enter the page of [measurement display].
< measurement display> page is mainly used to display measurement results and sorting
results.
6 common functions can be set up on this page. They include:

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Trigger – trigger mode
Range - Test Range
Speed - test speed
Alarm - comparator alarm alarm
Figure 4 -1 < measurement display> page
Slow, medium speed and fast mode
High speed mode
4.1.1 [Trigger] mode
SCPI Command: TRIGger:SOURce {INT,MAN,EXT,BUS}
SCPI Query Command: TRIGger:SOURce?
The instrument has 4 triggering modes:
Internal triggering, manual triggering, external triggering and remote triggering.
Trigger
mode
Describe
Internal
Also known as continuous testing, triggering signals from inside the
instrument Testing continuously according to inherent cycle.
manual
Every time the [Trig] key is pressed, the instrument performs a
measuring cycle.Other times the instrument is in wait state.
external
An ascending edge pulse is received from the Handler interface of
the rear panel, and the instrument performs a measuring cycle. The
other time is waiting. Please refer to the Handler interface.
remote
After receiving the RS232 trigger command, the instrument executes
one measurement cycle and the other time is in a waiting state.
* set trigger mode steps:
The first step is to press the Meas key into the main page.
The second step is to use the cursor key to select the trigger field.
The third step is to use function keys to select trigger mode.
Function key
Function

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Internal
Internal triggering
manual
manual triggering
external
external triggering
remote
remote triggering
4.1.2[range]
SCPI Command: FUNCtion:RANGe {<range number>,min,max}
SCPI Command: FUNCtion:RANGe:MODE {AUTO,HOLD,NOMinal}
SCPI Query Command: FUNCtion:RANGe?
SCPI Query Command: FUNCtion:RANGe:MODE?
JK2520C has 6 ranges.
The range of variation for each range is as follows:
Table 4‐1 Range of change
Range number
Range name 10kΩ
Range 3.2kΩ~33kΩ
6
1kΩ
320Ω～3.3kΩ
5
100Ω
32Ω～330Ω
4
10Ω
3.2Ω～33Ω
3
1Ω
320mΩ～3.3Ω
2
100mΩ
32mΩ~ 330mΩ
1
10mΩ
<33mΩ
JK2520B have 4 ranges. The range of variation for each range is as follows:
Table 4‐2 Range of change
Range number
Range name
Range
4
10Ω
3.2Ω～33Ω
3
1Ω
320mΩ～3.3Ω
2
100mΩ
32mΩ~330mΩ
1
10mΩ
<33mΩ
There are 3 ways of measuring.
Table 4 - 3 test range specification
Range
mode
Description
Advantage
Disadvantage

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auto
The instrument automatically
selects the best test range
according to the impedance
value, and the range number is
automatically set in the range
field.
Users do not
need any
involvement.
The automatic range
needs the predicted
range, and the test
speed will be lower than
the manual range.
Manual
The instrument will always be
tested with user specified
ranges.
The test speed is
the fastest.
Users need to
participate in range
selection.
nomina
l
The instrument will
automatically select the best
range according to the nominal
value for testing.
The best way of
sorting test. The
fastest speed。
Only for sorting tests.
Steps to set the range:
The first step is to press the Meas key into the measurement page or press the Setup
button to enter the setup page.
he second step uses cursor keys to select [range] fields.
The third step is to use function keys to select ranges automatically, manually or
selectively.
Function key
Function
Auto
The instrument will automatically select the range.
Manual
The instrument is locked in the current range.
nominal
The instrument will select the best range according to the
nominal value.
Increase +
Increase the range number and change the range to lock.
Decrease -
Decrease the range number and change the range to lock.
Note! When the range is automatic, the instrument makes a range prediction for each
measurement cycle, so the test speed will be slightly slower than the locked range.
Moreover, when automatic measurement, frequent replacement of the range will cause
the response to slow down. Usually, when the instrument is used as sorting and
measuring, the automatic measuring range is not suitable.
For sorting users, please select the nominal scale.
4.1.3 Test [speed]
SCPI Command: FUNCtion:RATE {SLOW,MED,FAST,ULTRA}
SCPI Query Command: FUNCtion:RATE?
JK2520C Provide 4 test speeds (slow, medium speed, fast and high speed).
JK2520B Provide three test speeds (slow, medium, fast), the slower the test results
are more accurate and stable.
In the manual range mode, the sampling time of the comparator is as follows:
Slow: 1 times / sec (1s).
Medium speed: 10 times / sec (100ms)

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Speed: 30 times / sec (33ms).
High speed: 145 times / sec (6.8ms) (JK2520B)
Steps to set test speed are:
The first step is to enter the measurement page according to [Meas] or enter the
setup page according to [Setup].
The second step is to use cursor keys to select [speed] fields.
The third step is to use function key selection.
4.1.4【Beep】setting
SCPI Command: COMParator:BEEP {OFF,GD,NG}
SCPI Query Command: COMParator:BEEP
The Beep function is only valid after the comparator function is turned on.
Sound setting allows qualified Beep, disqualification Beep or close Beep.
Beep setting
The first step is to enter the < measurement > page.
The second step is to use the cursor keys to select the Beep field.
The third step is to use function key selection.
Function key
Function
Close
Beep closed
Qualified Beep
When the sorting result is qualified (GD), the buzzer calls.
Unqualified Beep
When the sorting result is unqualified (NG), the buzzer calls.
4.2 Status bar
Data retention [H] – During the internal trigger, the measurement results will remain
unchanged, and the testing process will be suspended. ..
System -access to system configuration > page
Keyboard lock - lock keyboard..
4.2.1 Icons
Tabel 4‐5 Icons
Function key
Function
Slow
Medium speed
Fast speed
High speed
（JK2520B）
Icon
Description

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4.2.2 [Browse data] function keys
According to [browse data] funtion key, enter the< browse data > page.
4.3 [Browse data] page
The measurement results on the current screen can be maintained on the Flash disk
inside the instrument by the Save Data function key on the Measurement Display page.
In total, the instrument can store 500 sets of data, which can be stored in an external USB
disk with one key.
Figure 4 2 < browse data > page
[save to U disk] function key - save all data to external USB disk.The format is CSV
format.
[Reset ]function key - point the data pointer to the first row and the previous data will be
overwritten.
[formatting] function key - emptying all storage data.
[next page] function - used for page browsing.
5. [Setup] set page
In this chapter, you will learn all the settings:
Measurement setting
Temperature compensation settings
Short circuit clearing operation
Comparator settings
At any time, if you press the Setup button, the instrument will enter the main page.
5.1 Measurement setting
USB The disk is ready.
H
Data is maintained.

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All the settings related to measurement are operated in < Settings > page.
< Settings > page, the instrument does not display test results or comparator results, but
the instrument test is still in progress.
These settings include the following parameters:
Trigger -trigger mode
Range - Test Range
Speed - test speed
Beep-Beep -alarm
Resistance,voltage Comparison method
Resistance nominal value and voltage nominal value
Upper and lower limit setting
The settings of [trigger], [range], [sound] and [speed] can also be set on the <
measurement display > page. For the setting of these parameters, please refer to the
[Meas] main page section.
Fig 5‐1< Settings > page
5.1.1 Comparator settings
SCPI Command: COMP:RMOD {OFF,ABS,PER,SEQ}
SCPI Command: COMP:VMOD {OFF,ABS,PER,SEQ}
The instrument can compare resistance and voltage at the same time or separately.
There are 3 ways to compare: absolute value comparison (delta).
Percentage comparison (delta%)
Sequential comparison (SEQ)
Absolute value = measured value- nominal value
Percentage %=(measured value -nominal value) / nominal value x 100%
Direct-reading SEQ comparisons use direct-reading measurements compared to the
upper and lower limits of the file, so that nominal values are not required to participate in
the operation.
The steps to set the comparator are:
The first step is to go to < Settings > page.
The second step uses cursor keys to select [resistance comparison] or [voltage]
comparison fields.
The third step is to use function key selection.