Applent Instruments AT525 User manual


User’s Guide
AT525
BATTERY METER
Rev.A
FIRMWARE REVISIONS
Thismanualappliesdirectlytoinstrumentsthathavethefirmware
Rev.A2.x
*
@
#
%
安柏
Applent Instruments Ltd.
Address: Lanlin Dangnan Industrial Park,
Changzhou, Jiangsu, China (PRC)
Post Code: 213014
Telephone (Sales):
0086-0519-88805550 / 89966117/89966227
Fax：[phone]
Sales Email: sale[email protected]
Tech Email: t[email protected]
http://www.applent.com
©2005-2014 Applent.

2 AT525 User's Guide
CERTIFICATION,LIMITEDWARRANTY,&
LIMITATIONOFLIABILITY
Applent Instruments, Ltd. （shortened form Applent）certifies that this product met its
published specifications at the time of shipment from the factory. Applent 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 Applent 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, Applent 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 Applent
authorized reseller, and does not apply to fuses, disposable batteries or to any product which,
in Applent’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 Applent. The buyer shall prepay shipping charges to Applent and Applent 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 Applent from another country.
Applent warrants that its software and firmware designated by Applent for use with an
instrument will execute its programming instruction when properly installed on that
instrument. Applent 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. APPLENT 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.
Applent Instruments, Ltd.
Changzhou, Jiangsu,vChina,
Rev.A2 January, 2005
Rev.B0 January, 2008

3
Contents
CERTIFICATION, LIMITED WARRANTY, & LIMITATION OF LIABILITY...................2
Contents..................................................................................................................................3
Figure Contents...............................................................................................................5 
1.Unpacking and Preparation ...........................................................................................6
1.1Incoming Inspection....................................................................................6
1.2Power Supply ..............................................................................................6
1.3Working Environment.................................................................................6
1.4Cleaning......................................................................................................6
1.5Replace Battery...........................................................................................7
1.6Adjust Support ............................................................................................8
2.Overview .......................................................................................................................9
2.1Introduction.................................................................................................9
2.2Main Specifications and Features................................................................9
2.3Main Functions .........................................................................................10
2.3.1Correction ........................................................................................10
2.3.2Comparator (Sorting Function)........................................................10
2.3.3System Setup ...................................................................................10
2.3.4Remote Control................................................................................10
3.Startup .........................................................................................................................11
3.1Front Panel Summery................................................................................11
3.2Interfaces...................................................................................................12
3.3Power Supply ............................................................................................12
3.3.1Charge the Battery ...........................................................................12
3.4Turn On/Off ..............................................................................................13
3.5Test Slots...................................................................................................13
3.5.1Clips and Cables: .............................................................................13
4.<Meas> Key ................................................................................................................14
4.1<MEAS DISPLAY> Page.........................................................................14
4.1.1[TRIGGER] .....................................................................................14
4.1.2[RANGE].........................................................................................15
4.1.3Measurement Speed [SPEED] .........................................................16
4.1.4[BEEP] Feature................................................................................16
4.2Status Bar on <MEAS DISPLAY> ...........................................................16
4.2.1Icons on <MEAS DISPLAY>..........................................................17
4.2.2[VIEW DATA] Soft-key ..................................................................17
4.2.3[SAVE DATA] Soft-key...................................................................17
4.3<VIEW DATA> page................................................................................17
5.[SETUP] Key ..............................................................................................................19
5.1< SETUP> page ........................................................................................19
5.2Short-circuit Clear Zero [CLEAR ZERO] ................................................20
5.3Comparator Mode [R-COMP],[V-COMP]................................................20
5.3.1Comparator Nominal [R-NOMINAL],[V-NOMINAL] ...................21
5.3.2Limit [R-LOWER] [R-UPPER] [V-LOWER], [V-UPPER].............21
6.<SYSTEM CONFIG> page.........................................................................................22
6.1<SYSTEM CONFIG> page ......................................................................22
6.1.1[LANGUAGE] ................................................................................22
6.1.2[ACCOUNT], [PASSWORD]..........................................................23

4 AT525 User's Guide
6.1.3[DATE], [TIME] ..............................................................................23
6.1.4RS232 [BAUD] rate.........................................................................24
6.1.5RS-232 Shake Hand [SHAKE HAND]............................................24
6.1.6RS-232 Result Send Mode [RESULT SEND] .................................25
6.2<SYSTEM INFORMATION> ..................................................................25
6.3<SYSTEM SERVICE> page.....................................................................26
7.Remote Control ...........................................................................................................27
7.1To Select Baud Rate..................................................................................27
7.2SCPI Language .........................................................................................27
8.Command Reference ...................................................................................................29
8.1Terminator.................................................................................................29
8.2Notation Conventions and Definitions ......................................................29
8.3Command Structure ..................................................................................29
8.4Header and Parameters..............................................................................31
8.5Command Reference.................................................................................31
8.6DISPlay Subsystem...................................................................................32
8.6.1DISP:PAGE .....................................................................................32
8.6.2DISP:LINE ......................................................................................32
8.7FUNCtion Subsystem ...............................................................................32
8.7.1FUNCtion:RANGe ..........................................................................33
8.7.2FUNCtion:RANGe:MODE..............................................................33
8.7.3FUNCtion:RATE .............................................................................33
8.8COMParator Subsystem............................................................................34
8.8.1COMParator:RMODe......................................................................34
8.8.2COMParator:VMODe......................................................................34
8.8.3COMParator:BEEP..........................................................................35
8.8.4COMParator:TOLerence:RNOMinal...............................................35
8.8.5COMParator:TOLerence:RLiMiT ...................................................35
8.8.6COMParator:TOLerence:VNOMinal...............................................36
8.8.7COMParator:TOLerence:VLiMiT ...................................................36
8.9TRIGger Subsystem..................................................................................36
8.9.1TRIGger[:IMMediate] .....................................................................36
8.9.2TRIGger:SOURce............................................................................37
8.9.3TRG .................................................................................................37
8.10FETCh Subsystem ....................................................................................37
8.10.1FETCh?............................................................................................37
8.11CORRection Subsystem............................................................................38
8.11.1CORRection:SHORt........................................................................38
8.12SYSTem subsystem...................................................................................38
8.12.1SYSTem:SENDmode.......................................................................38
8.13ERRor Subsystem .....................................................................................38
8.14IDN? .........................................................................................................39
8.15SAV...........................................................................................................39
9.Specification................................................................................................................40
9.1General Specifications ..............................................................................40
9.2About Accuracy ........................................................................................40
9.3AC Resistance Range................................................................................40
9.4DC Voltage Range.....................................................................................41
9.5Features.....................................................................................................41
9.6Environment..............................................................................................41

Unpacking and Preparation 5
Figure Contents
Figure 8-1 Command Tree Example.............................................................................29
Figure 8-2 DISP Command Tree...................................................................................32
Figure 8-3 FUNCtion Subsystem Tree..........................................................................33
Figure 8-4 COMParator Subsystem Command Tree ....................................................34
Figure 8-5 TRIGger Subsystem Command Tree...........................................................36
Figure 8-6 FETCh Subsystem Command Tree .............................................................37
Figure 8-7 CORRection Subsystem Command Tree ....................................................38
Figure 8-8 SYSTem commad tree.................................................................................38

6 AT525 User's Guide
1. UnpackingandPreparation
This chapter describes:
Incoming Inspection
Power Supply
Working Environment
Cleaning
Replace Battery
Adjust Support
1.1 IncomingInspection
1. Referring to <Packing List> in the packing box, check that all packaged items
supplied with the meter have been provided as listed
2. Check the appearance of whether there is damage or scratches ;
If there was damage or lack of accessories, please contact Applent Instruments
Sales Department or local agency
1.2 PowerSupply
AC power adapter: ATL909
Rechargeable Li battery: ATL805
Input: 90V-260VAC,49Hz~62Hz, <10VA
Warning: Do Not use any other power adapter or battery
1.3 WorkingEnvironment
Environmental Requirements:
Temperature: 0℃～55℃,
Humidity: At 23℃less than70%RH
Altitude: 0 ~ 2000m
1.4 Cleaning
Do not clean the inside of the instrument
Warning: Do not use the cleaning solvent (alcohol or gasoline, etc.) on
the instrument.

Unpacking and Preparation 7
Please use a clean cloth dipped in some water to do the case and panel cleaning.
1.5 ReplaceBattery
The instrument built-in rechargeable lithium battery, the battery has been
installed in the battery compartment of the instrument at the factory. You should
replace the battery according to the following procedure.
Figure1‐1  ReplaceBattery
1. Use a screwdriver to loosen the screws of the battery cover, remove the battery cover.
2. Remove the plug on the old battery, plug in new battery plug
3. Put a new battery into the battery compartment, replace the battery cover and tighten
the screws.

8 AT525 User's Guide
1.6 AdjustSupport
The support has two positions:
60 degrees and 45 degrees.
45 degrees, makes the instrument more stable.
Figure1‐2  60DegreesSupporting

Figure1‐3  45DegreesSupporting

Overview 9
2. Overview
This chapter contains general information about AT525 .The information is
organized as follows
Introduction
Main Specifications
Feature overview
2.1 Introduction
Thank you for choosing AT525 AC Resistance Meter.
AT525 adopts high-performance 32-bit ARM processor. It is a meter with wide
resistance measurement range from 0.001mΩto 3Ωand DC voltage range from
0.0000V to 60.000V.
The instrument features an m-Ohm and V mode that allows simultaneous
measurement and comparison of battery internal resistance and open-circuit
voltage. This meter is highly suitable for battery inspection lines as one unit can
act as both a low-resistance meter and a voltmeter.
The AT525 completes with comparator function and external interface (handler)
utilizing the principles of the AC 4-terminal method that gives priority to line
use and offers high speed, high accuracy and high resolution.
With its built-in comparator, the AT525 can output comparison/decision results
for sorting components into resistance HIGH-IN-LOW bins and voltage
HIGH-IN-LOW bins.
AT525 measures all kinds of battery’s resistance and DC voltage, such as
lithium batteries, lead-acid batteries, Button Cell Batteries and etc. Especially,
AT525 can measures UPS batteries while UPS working online.
AT525 is equipped with RS232 interface to apply to remote control, data
acquisition and analysis.
AT525 is also equipped with USB-Disk interface, and you can store the test
values into your USB Disk over 500 sets.
2.2 MainSpecificationsandFeatures
Basic Accuracy: Resistance: 0.5% Voltage: 0.05%
Test Frequency: 1kHz±2Hz
Max Display: Resistance: 33,000 digit, DC Voltage: 60,000 digit
4 rangers with Auto, Manual and Nominal Modes

10 AT525 User's Guide
Four-terminal test method
Test Speed: 10 times/s (Fast Speed Mode)
Trigger Mode: Internal and Manual trigger
2.3 MainFunctions
2.3.1 Correction
Short-circuit Clear Zero correction for all ranges.
2.3.2 Comparator(SortingFunction)
Set up sorting function to do GD/NG sorting.
Comparator Methods:
Absolute value of tolerance ±TOL sorting
Percentage tolerance TOL sorting
Sequence comparison sorting
Beep Feature:
Beep: OFF/GD/NG
2.3.3 SystemSetup
Keypad Lock Function
Switch Both in Chinese and English
Time and Date Settings
Administrator Accountant Settings
2.3.4 RemoteControl
Max baud rate: 115200bps,SCPI available, ASCII transmit.

Startup 11
3. Startup
This chapter describes:
Front Panel Summery
Interfaces
Power Supply
Turn on/off
Test Slots
3.1 FrontPanelSummery
Table3‐1Frontpanelsummery
1 Beep
2
Battery
Charging
Indicator
3 Trigger
Indicator
4 Power on/off
5 Numeric Keys
6 Test Slots
7 Main Page Key
8 Direction Keys
9 Soft keys 1
10 Soft keys 2
11 TFT-LCD
Screen

12 AT525 User's Guide
3.2 Interfaces
Figure3‐1 Interfaces
1. USB Host Port
2. Mini-USB Slave Port
3. Reserved Interfaces
4. Power Adaptor
3.3 PowerSupply
Power adaptor: ATL909
The instrument can be powered by Li battery. When the battery is low, only
power adaptor can charge the battery.
Figure3‐2 Instrumentandpoweradaptor
3.3.1 ChargetheBattery
Use the power adaptor to charge the battery. The power key is orange when
charging the battery even the instrument turned off. When the battery is full, the
indicator is out.
Figure3‐3 Powerkeyisorangewhencharging.

Startup 13
Attention！The power key is still orange while charging even when the instrument
shut down.
3.4 TurnOn/Off
Press power key softly to start or turn off the instrument.
3.5 TestSlots
Insert the cable box into test slots
Figure3‐4 TestSlots
3.5.1 ClipsandCables:
Using clip or cable from other brands may cause mistakes
After a long time (1~2 Years), the surface of the accessories may be damaged,
which will lead some inaccuracy.

14 AT525 User's Guide
4. <Meas>Key
This section includes the following information:
MEAS DISPLAY page
VIEW DATA page
4.1 <MEASDISPLAY>Page
Press [Meas] key to enter <MEAS DISPLAY>Page.
The <MEAS DISPLAY> page includes following setup:
Trigger Mode [TRIGGER]
Measurement Range [RANGE]
Test Speed [SPEED]
Comparator [COMP] ON/OFF
[BEEP] Feature
Soft-key VIEW DATA – To Enter [VIEWDATA] page
Soft-key SAVE DATA – To Store measurement result into
internal flash disk.
Figure4‐1<MEASDISPLAY>Page
4.1.1 [TRIGGER]
SCPI Command: TRIGger:SOURce {INT,MAN,BUS}
SCPI Query Command: TRIGger:SOURce?
AT525 supports four trigger modes: INT (internal), EXT, MAN (manual) and
BUS (RS-232)
Table4‐1  TriggerSetting
Trigger Description

<Meas> Key 15
Mode
INT Continuously repeats the measurement cycle.
MAN Performs one cycle of measurement each
time you press the [Trig] key.
BUS Performs one cycle of measurement each
time it receives a trigger command sent via
RS-232.
Procedure to set the trigger:
Step 1 Press [Meas] key to enter <MEAS DISPLAY>Page
Step 2 Use cursor keys to select [TRIGGER] field
Step 3 INT Automatic Internal trigger
MAN Manual Trigger by pressing [Trig] key
BUS BUS Trigger by RS232 SCPI command
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?
AT525 has three resistance range modes and two voltage range.
Resistance Ranges:
Auto range, Manual range and Nominal range
Table4‐2ResistanceRangeMode
Range Description Pros Cons
AUTO
Automatically
select the best range according
to impedance
Range is automatically set.
Very convenient
Test speed is
slower than
manual
ranging,
HOLD The instrument will always
use the user-specified range Highest speed Set the range
previously
NOMINAL
Automatically
select the best range according
to nominal value.
Best mode for
sorting.
Only available
in sorting
mode

Table4‐3ResistanceMeasurementRangesofAT525
Range Range Name Measurement Range
3 3Ω320m～3.3
2 300Ω320Ω~ 330mΩ
1 30m32m～330m
0 3m0mΩ～3.3m
Procedure of setting the range:

16 AT525 User's Guide
Step 1 Press [Meas] key to enter measurement page
Step 2 Use the cursor key to select [RANGE]
Step 3 AUTO Auto range
HOLD Current range is hold
NOMINAL Select the range according to resistance nominal
value [RNom].
INCR+ Increase range
DECL- Decline range
4.1.3 MeasurementSpeed[SPEED]
SCPI Command: FUNCtion:RATE {SLOW,MED,FAST}
SCPI Query Command: FUNCtion:RATE?
SLOW, MED, FAST and ULTRA speed mode can be selected for AT525.
SLOW mode will result in more stable and accurate measurement result.
The following speed is measured in range-hold mode and comparator is ON:
SLOW: 1 times/sec (1s)
MED: 5 times/sec (100ms)
FAST: `0 times/sec (33ms)
Procedure to set test speed:
Step 1 Press [Meas] key to enter measurement page;
Step 2 Use the cursor key to select [SPEED] field
Step 3 SLOW
MED
FAST
4.1.4 [BEEP]Feature
SCPI Command: COMParator:BEEP {OFF,GD,NG}
SCPI Query Command: COMParator:BEEP
Procedure to set the beep:
Step 1 Press [Meas] key to enter measurement page;
Step 2 Use the cursor key to select [BEEP]
Step 3 OFF Turn Beep Off
GD Beep while Pass
NG Beep while Fail
4.2 StatusBaron<MEASDISPLAY>
HOLD – Hold the data under internal trigger mode, test stops.
SYSTEM– Go to <SYSTEM CONFIG>Page
KEY LOCK – Lock the keypad.
Time

<Meas> Key 17
4.2.1 Iconson<MEASDISPLAY>
Table4‐5Icons
Icon Description
USB-Disk is available.
H Hold current data.
4.2.2 [VIEWDATA]Soft‐key
To enter the <VIEW DATA> page by pressing [VIEW DATA] soft-key.
4.2.3 [SAVEDATA]Soft‐key
Every press this key a line of measurement result will be stored into internal
flash disk.
The saved data can be reviewed on <VIEW DATA> page by pressing [VIEW
DATA] soft-key.
4.3 <VIEWDATA>page
The measurement result can be stored in AT525’s internal nonvolatile memory
by press the [SAVE DATA] soft-key in <MEAS DISPLAY> page.
Over 500 sets data can be saved.
The format of measurement result is:
[Resistance][Voltage][Date][Time]
You can review the saved data on the <VIEW DATA> page by pressing the
[VIEW DATA] soft-key in <MEAS DISPLAY> page.
Figure4‐2<VIEWDATA>page
SAVE TO DISK – Store all data into USB Disk
RESET – The data will be stored from the start of the

18 AT525 User's Guide
table.
FORMAT – To format the internal nonvolatile memory
disk, all data will be lost.
PAGE – Jump to the provided page

[SETUP] Key 19
5. [SETUP]Key
This chapter describes:
<STEUP> page
Short-circuit Clear Zero
5.1 <SETUP>page
Press [Setup] key to enter <SETUP>page.
In <SETUP> page, the Instrument does not display measurement result and
comparator result, testing is not in progress.
The <SETUP> page includes following setup:
Trigger Mode [TRIGGER]
Measurement Range [RANGE]
Measurement Speed [SPEED]
BEEP Feature
Soft-key CLEAR ZERO – Clear Zero Correction
R-COMP – AC Resistance Sorting Methods
V-COMP– DC Voltage Sorting Methods
R-NOMINAL – Input Resistance Nominal Value
R-LOWER – Input Resistance Lower Limit
R-UPPER – Input Resistance Upper Limit
V-NOMINAL – Input Voltage Nominal Value
V-LOWER – Input Voltage Lower Limit
V-UPPER – Input Voltage Upper Limit
Some settings can be also set up in <MEAS DISPLAY> page. Please refer to
the chapter: <Meas> Key
Figure5‐1<SETUP>page

20 AT525 User's Guide
5.2 Short‐circuitClearZero[CLEARZERO]
SCPI Command: CORR:SHOR
Press [Setup] key to enter < SETUP> page, and then press [CLEAR ZERO]
soft-key to do short-circuit clear zero.
After correction, the value will be saved into internal flash disk.
It is necessary to do short-circuit clear zero correction.
When replace the test fixture or test cables, please do short –circle clear zer
o
How to connect the test clips before executing short-circle clear.
Figure 5-2 Connect the test clip
5.3 ComparatorMode[R‐COMP],[V‐COMP]
SCPI Command: COMP:RMOD {OFF,ABS,PER,SEQ}
SCPI Command: COMP:VMOD {OFF,ABS,PER,SEQ}
There are several items for choosing:
SEQ – Sequential Mode
PER – Percentage Mode [PER = (Result – Nominal) / Nominal * 100%]
ABS – Absolute Mode [ABS = Result – Nominal]
Procedure to set comparator mode:
Step 1 Press [Setup] key to enter <SETUP> page
Step 2 Use cursor key to select [RESMODE]
Step 3 SEQ Sequential Mode:
Compare result with low and high limited values.
PER󰅿% Percentage Mode:
(Result – nominal) / nominal × 100%
ABS󰅿Absolute Mode:
Result – Nominal