Applent Instruments AT2811 User manual

User’s Guide
Rev.A4
FIRMWARE REVISIONS
AT2811
LCR Meter
Applent Instruments Ltd.
Address: Baolong International FL3, Zhonglou
District, Changzhou, Jiangsu, China (PRC)
Post Code: 213000
Tel: [phone]
Fax: [phone]
Sales Email: [email protected]
Tech Email: [email protected]
http://www.applent.com

AT2811 User’s Guide
2
Safety Summary
Warning Dangerous:
When you notice any of the unusual conditions listed below, immediately terminate operation and
disconnect the power cable.
Please Contact Applent Instruments Incorporation sales representative for repair of the instrument. If you
continue to operate without repairing the instrument, there is a potential fire or shock hazard for the
operator.
Instrument operates abnormally
Instrument emits abnormal noise, smell, smoke or a spark-like light during the operation.
Instrument generates high temperature or electrical shock during operation.
Power cable, plug, or receptacle on instrument is damaged.
Foreign substance or liquid has fallen into the instrument.
Warning Dangerous:
The following general safety precautions must be observed during all phases of operation, service, and
repair of this instrument. Failure to comply with these precautions or with specific WARNINGS elsewhere in
this manual may impair the protection provided by the equipment. In addition it violates safety standards of
design, manufacture, and intended use of the instrument.
Disclaimer The Applent Instruments assumes no liability for the customer's
failure to comply with these requirements.
Ground
The Instrument
To avoid electric shock hazard, the instrument chassis and cabinet
must be connected to a safety earth ground by the supplied power
cable with earth blade.
DO NOT
Operate In An Explosive
Atmosphere
Do not operate the instrument in the presence of inflammable
gasses or fumes. Operation of any electrical instrument in such an
environment constitutes a definite safety hazard.
Keep Away
From Live
Circuits
Operating personnel must not remove instrument covers.
Component replacement and internal adjustments must be made by
qualified maintenance personnel. Do not replace components with
the power cable connected. Under certain conditions, dangerous
voltages may exist even with the power cable removed. To avoid
injuries, always disconnect power and discharge circuits before
touching them.
DO NOT
Service Or Adjust Alone
Do not attempt internal service or adjustment unless another person,
capable of rendering first aid and resuscitation, is present.
DO NOT
Substitute Parts Or
Modify Instrument
Because of the danger of introducing additional hazards, do not
install substitute parts or perform unauthorized modifications to the
instrument. Return the instrument to an Applent Inc Sales and
Service Office for service and repair to ensure that safety features
are maintained.

3
CERTIFIACTION, LIMITED & LIMITATION OF UABILITY
CERTIFIACTION, LIMITED & LIMITATION OF UABILITY
Applent Instruments, Inc. (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 years
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, Inc.
Changzhou,
Jiangsu,
The People’s Republic of China.
Rev.C0 May, 2014

AT2811 User’s Guide
4
Contents
Safety Summary ......................................................................................................................................................................................... 2
CERTIFIACTION, LIMITED & LIMITATION OF UABILITY ............................................................................................................... 3
Contents ....................................................................................................................................................................................................... 4
1.Unpacking and Inspection ...............................................................................................................................................................5
1.1Packing List ............................................................................................................................................................................. 5
1.2Power Supply Requirements .............................................................................................................................................. 5
1.3Setting up the Fuse ............................................................................................................................................................... 5
1.4Environmental Requirements ............................................................................................................................................. 6
1.5Cleaning ................................................................................................................................................................................... 6
2.Overview ............................................................................................................................................................................................7
2.1Introduction ............................................................................................................................................................................. 7
2.2Main Specifications ............................................................................................................................................................... 7
2.3Features Overview ................................................................................................................................................................ 8
3.Start up...............................................................................................................................................................................................9
3.1Front Panel .............................................................................................................................................................................. 9
3.1.1Front panel description ............................................................................................................................................... 9
3.2Keypad ................................................................................................................................................................................... 10
3.3Rear Panel ............................................................................................................................................................................ 10
3.4Power ON/OFF .................................................................................................................................................................... 11
3.4.1Power up ...................................................................................................................................................................... 11
3.4.2Warm-up time ............................................................................................................................................................. 11
3.5Connect to Device under Test........................................................................................................................................... 11
3.6To select principal and AUX parameter .......................................................................................................................... 11
3.7To set up test frequency ..................................................................................................................................................... 12
3.8AUTO and Manual range ................................................................................................................................................... 12
3.9To select test speed ............................................................................................................................................................ 12
3.10Clear zero .............................................................................................................................................................................. 12
3.11Setup ...................................................................................................................................................................................... 13
3.11.1To setup sorting .......................................................................................................................................................... 14
3.11.2Input sorting value ..................................................................................................................................................... 15
4.Specification ....................................................................................................................................................................................16
4.1Technical Specifications ..................................................................................................................................................... 16
4.2General Specifications ........................................................................................................................................................ 17
4.3Dimension ............................................................................................................................................................................ 18

5
Unpacking and Inspection
1.Unpacking and Inspection
Thank you for purchasing our product, please refer to this chapter before using the
instrument.
This chapter describes how to set up and start the AT2811 LCR Meter.
Packing List
Power Supply Requirements
Setting up the Fuse
Environmental Requirements
Cleaning
1.1 Packing List
After you receive the instrument, carry out checks during unpacking according to
the following procedures.
1. Check that the packing box or shock-absorbing material used to package
the instrument has not been damaged.
2. Referring to Table 1-1, check that all packaged items supplied with the
meter have been provided as per the specified optioned.
Table 1-1 Included Accessories
NAME QTY REMARK
User’s Manual 1
AC Power Cord 1 220V/50Hz
Fuse 2 0.5A Slow-Blow
ATL501 Kelvin Test Leads 1
Tes t R e po r t 1
If there is damaged or shortage in accessories, please contact Applent Sales Department or
retailer.
1.2 Power Supply Requirements
Confirm that the power supplied to the AT2811 meets the following requirements:
Voltage：198-252V AC
Frequency：47.5-52.5Hz
Consumption：<10VA
To prevent electrical shock, please connect to GND.
If users change power cord, please make sure reliable connection of GND.
1.3Setting up the Fuse
A spare fuse is included with the accessories, the fuse is located on the instrument’s rear panel,
please refer to Rear Panel section in Chapter 3

AT2811 User’s Guide
6
Please use the following fuse type：
250V, 0.5A Slow-Blow
1.4 Environmental Requirements
Ensure that AT2811 is operatd under the following environment:
Temperature Range: 0C～55C，
Humidity Range: <95%RH at 40C
Technical index Temperature：23C 5C
Technical index Humidity：<70%RH
1.5 Cleaning
To prevent electrical shock, disconnect the AT2811 power cable from the
receptacle before cleaning.
Use a dry cloth or a cloth slightly dipped in water to clean the casing.
Do not attempt to clean the AT2811 internally.
WARNING:
Don’t Use Organic Solvents (such as alcohol or gasoline) to clean the
Instrument.

7
Overview
2.Overview
This chapter provides the following information:
Introduction
Main Specifications
Features Overview
2.1 Introduction
AT2811 is small bench-type adopting high performance microprocessor. Four grades of test
frequency: 100Hz, 120Hz, 1kHz, 10kHz，0.1V、0.3V and 1V Signal Level for selecting，Source
Resistance 30Ω、100Ω. The instrument can AUTO test L、C、R、Z、Q and D.
Brand new AT2811 is with high cost-performance，easy operation UI，can meet accurate test
and volume production requirements of components factories, schools, research institution
and quality control institution.
The AT2811 can output comparison/decision results for sorting components into 5 bins.
2.2 Main Specifications
The AT2811 technical specifications, including the basic technical specifications of
the instrument and equipment testing allows. These specifications are in the
instrument factory can achieve。
Please refer to Chapter 4 for complete technical specifications.
Test Parameters：L-Q, C-D, R-Q, Z-Q 。
Test Frequency：100Hz，120Hz，1kHz，10kHz
Accuracy：0.02%
Test Signal Level：0.1Vrms, 0.3V and 1.0V
Accuracy：10%
Test Speed：Slow: 3 times/second, Fast: 10 times/second
Source Resistance：30Ωand 100
Range：Automatic and manual with 6 ranges
Equivalent Circuit：In series and parallel
Test Mode：five-terminal measurement
Basic Accuracy：0.25%

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8
2.3 Features Overview
Display：
Principal parameter 0.8 inches LED display，AUX parameter 0.5 inches LED display
Can display main and AUX parameter simultaneously with 5 digits.
A：L, C, R, Z
B：Q, D
correcting feature：
Short and open full frequencies correction.
Comparator（sorting）function：
5 bins sorting results：3 bins percent GD bin、1 bin auxiliary bin and 1 bin NG bin.
· Comparator function display：LED display
· Beep：Can setup all comparator results beep.

9
Start up
3.Start up
This chapter provides the following information:
Front Panel Summary
Rear Panel Summary
Power ON/OFF
Connect to Device under Test
3.1 Front Panel
3.1.1 Front panel description
Figure 3-1 Front panel
1 State indicator, range NO.、speed、range、equivalent mode and frequency indicator
2 Principal parameter display window: 0.8 inches LED display
3 AUX parameter display window: 0.5 inches LED display
4 Sorting indicator
5 Test terminal
6 Beep indicator
7 Direction key
8 Principal function key
9 Power switch

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10
3.2 Keypad
Figure 3-2
Keypad area
Parameter Select parameter: L-Q, C-D, R-Q, |Z|-Q
Frequency Select test frequency: 100Hz、120Hz、1kHz and 10kHz is available
AUTO Select AUTO and Manual range
Speed Select test speed. Slow and fast speed is available.
Setup Enter sorting and other function setup
Clear Zero Enter Zero page
 Select range
ESC Return to test state from setup page
Enter Confirm option or input
3.3 Rear Panel
Figure 3-3 Rear Panel
1 RS232C, reserved port, not available for AT2811.
2 Fuse Holder
250V，0.5A fuse
3 AC Power Cord Receptacle

11
Start up
198V~242VAC，45Hz~55Hz
3.4 Power ON/OFF
3.4.1 Power up
At bottom left side of panel, there is“+”key
Power ON
Power OFF
3.4.2 Warm-up time
AT2811 is ready to be used as soon as the power-up sequence has completed. However, to
achieve the accuracy rating, warm up the instrument for 15 minutes.
3.5 Connect to Device under Test
If you use Kelvin clip that comes with the instrument, please connect to device same as the
following:
Figure 3-4
Test terminal
Warning: Do not apply DC voltage or current to the UNKNOWN terminal.
Applying DC voltage or current may lead to device failure.
Warning: The capacitors should be discharged before connected to the
terminals.
3.6 To select principal and AUX parameter
Under measurement state, press FUNC key to select first display line and
second display line parameter.
Four parameters are available for selection:
L-Q, C-D, R-Q, Z-Q
Unit that is used by Corresponding parameter：

AT2811 User’s Guide
12
L H
（microhenry）
mH
（millihenry）H（henry）
C pF（miicromicro
farad）
nF
（nanofarad）
F
（microfarad）
R/Z （ohm）k

（kiloohm）M

（megohm）
Note：
Z take ADS, L/C/R has plus and minus. When C-D make
measurement，principal parameter displays negative value, the actual
tested component shows inductive；When L-Q measurement displays
negative values, the actual tested component shows capacitive. In theory,
R value constant is positive, under some condition, it possibly apprears R
is negative, this is caused by excessive clear zero, so please perform clear
zero in correct way.
Instrument can display maximum 5 digits, sometimes it displays 4 digits,
see the following transformational relation:
Previous
display digits
Current
measurement
pre-two value
Current
display digits
4 <33 5
5 >30 4
3.7 To set up test frequency
Frequency accuracy：0.02%
Press freq and then display in circulation at frequency indicator
100Hz，120Hz，1kHz，10kHz
3.8 AUTO and Manual range
Press AUTO to switch AUTO and hold range
Auto indicates current state, when AUTO indicator is lighted, it means AUTO range is used,
when AUTO indicator is extinguished, it means manual range is used.
3.9 To select test speed
Press Speed to switch 2 bin test speed：
Slow: 3 times/second
Fast: 10 times/second
3.10 Clear zero
To achieve high accuracy measurement, clear zero is necessary.
Clear zero can efficiently eliminate test clips, test lead, stray capacitance, inductance and leads
reistance, inductance inside the instrument that affect measurement. When instrument is
used with tremendous temperature change, performing clear zero is also recommended.

13
Start up
3.11 Setup
Under test state, press Setup key，it will appear the following page:
Press  to select turn page and display setup option.
Press ESC key to return to setup page.
Press Enter key to enter sub menu setup page.
Press Clear key to enter clear zero page, instrument will provide OPEN or SHORT option
according to current state of test terminal:
Press ESC key to return to test state
Perform:
At this moment, please OPEN circuit or SHORT circuit your test clip, instrument will AUTO
check test terminal state，and provide OPEN and SHORT option.
Press Enter key to begin clearing, this process lasts for about 20 seconds, please OPEN circuit
or SHORT circuit your test clip (if previous state is SHORT clear, please OPEN circuit your test
clip; if previous state is OPEN clear, please SHORT circuit your test clip, press Enter again and
wait for about 20 seconds, then clearing finishes and return to test state.）
Press ESC key to terminate clearing process.
After clearing is completed, clearing value is saved in the internal memory of the instrument.
Details：
When performing clear zero，it possibly appear FAIL (FAIL)，this maybe caused by non using of
low resistance short circuit or non reliable contact, please re short circuit and then perform
clear zero.
Instrument will clear all ranges under all frequencies, it will save data in NVM (nonvolatile
memory). Change frequency to test under same test condition, do not reperfrom clear zero.
CLEAR
Current option is glittered
OPEN
1.0000
Current option is glittered
STD

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14
All menu option is as below：
Setup
STD Principal parameter nominal value
SEC AUX parameter (if principal parameter is L,R, or if Z display q-L；if principal
parameter is C display d-H)
P1-H Bin 1 upper limit (input positive percentage, such as: 5% ， principal
parameter window displays 5.000)
P1-L Bin 1 lower limit (input negative percentage, such as: -5%， principal
parameter window displays -5.000)
P2-H Bin 2 upper limit (input positive percentage, such as: 10%， principal
parameter window displays 10.000)
P2-L Bin 2 lower limit (input negative percentage，such as：-10%，principal
parameter window displays -10.00)
P3-H Bin 3 upper limit (input positive percentage, such as：15%，principal
parameter window displays 15.000)
P3-L Bin 3 lower limit (input positive percentage, such as：-15%，principal
parameter window displays -15.00)
BEEP Beep setup：
OFF: turn off
P1： PASS bin P1 beep
P2： PASS bin P2 beep
P3： PASS bin P3 beep
AU: AUX parameter FAIL beep
NG: Principal and AUX parameter is all FAIL beep
SrES Source Resistance setup：
100： 100Ω Source Resistance
30： 30Ω Source Resistance
LEVEL Signal Level setup：
0.1： 0.1V
0.3： 0.3V
1.0： 1.0V
EQU Equivalent Circuit setup：
SER: series equivalent
PAL: parallel equivalent
CAL System correction page（password protection，is not open to users）
3.11.1 To setup sorting
Before set up sorting, please understand sorting system of AT2811：
AT2811 has enhanced sorting distinguish system.
P1,P2,P3 is used for indicating principal parameter PASS or not, if FAIL, NG indicator is lighted,
sorting finishes. If PASS, GD indicator P1-P3 is lighted, and continue performing AUX
parameter compare.
AUX is used for indicating AUX parameter PASS or not, if FAIL, AUX indicator is lighted, NG
indicator is extinguished.
If there is one NG in principal and AUX parameter, NG indicator is lighted.

15
Start up
Several sorting signal that may appear:
P1 P2 P3 AU NG
●○○○○Principal parameter P1 and AUX parameter is all PASS
○○○○●Principal parameter FAIL
○○○●●Principal parameter PASS、AUX parameterFAIL
Figure 3-5
Sorting flow
3.11.2 Input sorting value
Figure 3-6
Input filed
Press to choose digit bit.
Press to increase or decrease number, or change unit.
Press ESC to return to main menu.
Press Enter key to save data and return to main menu.
Note：if lower limit（P1-L,P2-L,P3-L）is minus deviation，users need to input（-）.
0.0000
Press Enter key to enter submenu, current value,
decimal point or unit flickers.
s
t
d

AT2811 User’s Guide
16
4.Specification
This chapter provides the following information:
Technical Specifications
General Specifications
Dimension
4.1 Technical Specifications
The following data are measured under the following conditions：
Temperature：23℃±5℃
Humidity: 65% R.H.
Zero Correction: OPEN and SHORT Zeroing before testing
Warm up：60 minutes and more
Calibration Time：12 months
Test frequency accuracy:： 0.02%
Basic accuracy：0.25%
C：0.25% (1+ Cx/Cmax+ Cmin/Cx )(1+Dx )( 2+kf )；
L：0.25% (1+ Lx/Lmax+ Lmin/Lx )(1+1/Qx )( 2+kf )；
Z：0.25% (1+ Zx/Zmax+ Zmin/Zx )(2+kf )；
R：0.25%(1+ Rx/Rmax+ Rmin/Rx )(1+Qx)(2+kf )；
D：0.0025(1+ Zx/Zmax+ Zmin/Zx )(1+Dx+Dx2)(2+ kf )；
Q：0.0030(1+ Zx/Zmax+ Zmin/Zx )(Qx+1/Qx )(2+ kf )；

Where：
1．L，C，R，Z is relative error; D，Q is absolute error.
2．Subscript that is X is this parameter’s measured value, Subscript that is max is maximum value,
min is minimum value.
3．kf frequency factor
Measured parameter maximum value and minimum value that affect accuracy
100Hz 120Hz 1kHz 10kHz
Cmax 800F 667F 80F 8F
Cmin 1500pF 1250pF 150pF 15pF
Lmax 1590H 1325H 159H 15.9H
Lmin 3.2mH 2.6mH 0.32mH 0.032mH
Zmax/ Rmax 1M
Zmin/ Rmin 1.59
Test frequency error factor kf
When f = 100Hz、120Hz 、1kHz kf=0；
whenf=10kHz kf=0.5

17
Specification
4.2 General Specifications
Screen：LED display
Test parameter： L, C, R, Z, D, Q and AUTO parameter
Test frequency： 100Hz，120Hz，1kHz，10kHz
Signal level： 0.1Vrms，0.3Vrms and 1.0Vrms (110%)
Basic accuracy： 0.25%
Measurement range：
L
100/120Hz 1H – 9.999kH
1kHz 0.1H - 999.9H
10kHz 0.01H – 99.99H
C
100/120Hz 1p – 9.999mF
1kHz 0.1p – 999.9F
10kHz 0.01p – 99.99F
R、|Z| 0.0001 - 99.99M
D/Q 0.0001 – 9999
Display digits： principal and AUX parameter：5 digits
Test speed： Slow：3 times/second，Fast：10 times/second
Source Resistance： 30Ω and100
MAX reading： 33000
Range： AUTO and Manual
Equivalent Circuit： In series and parallel
Correction： Short and open sweep frequency correction
Comparator： 5 bins：P1, P2, P3, AUX, NG
Beep： P1, P2, P3, AUX, NG、OFF
Environment index： temperature 18℃~28℃ humidity  65% RH
Operating： temperature 10℃~40℃ humidity 10~80% RH
Storage： temperature 0℃~50℃ humidity 10~90% RH
Power： 198V ~ 252VAC 48.5Hz ~ 52.5Hz
Fuse： 250V 0.5A slow-blow
Consumption： MAX 10VA
Weight： 2kg
Accessories： User’s manual, ATL501 Kalvin test leads, AC power cord, test report,
warranty card,

AT2811 User’s Guide
18
4.3 Dimension
Figure 4-1 Dimension
AT2811 User’s Guide
©2005-2016 Applent Instruments Ltd.