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Start

This chapter describes names and functions of the front panel, rear panel, and screen
display and provides the basic procedures for operating AT520x.



Front panel summary



Rear panel summary



VFD

3.1

Front

panel

Figure 3-1

Front panel

Comp

Rate

Range

Comparator 30mV Limit

I-Mode

Remote

Shift

Data

Key Lock

Beeper

Relative

Clear

Brightness

+/-

Trig

Esc

Enter



Trigger

AC Ohmmeter

Beep



Hold

Drive

Sense

UNKNOWN

AT520SE

Applent

←



Table 3-1

Front panel description

No. Name

Description

POWER SWITCH

Push down: ON, Push up: OFF

2 VFD

Displays measurement results, instrument status and user’s
interface menus.

Knob

To choose menu item and input number

4 Terminals

The 4-terminal Kelvin chip leads connect to the input
terminal

5 Keypad

Multi-function keys: Numeric, 1

Function and 2

Function.

Shift

Key to press before 2

Function

Keypad I

Dual-Function keys: 1

Function and 2

Function.

Содержание AT520

Страница 1: ...13014 Telephone Sales 0086 0519 88805550 89966117 89966227 Fax 0086 0519 89966550 Sales Email sales applent com Tech Email tech applent com http www applent com http www applent en alibaba com 2005 2012 Applent Instruments LLC Rev C2 AT520 AT520SE AT520L AT520M AC Milliohm Meter USER S GUIDE ...

Страница 2: ...entative for repair of the instrument If you continue to operate without repairing the instrument there is a potential fire or shock hazard for operators 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 damag...

Страница 3: ...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 eve...

Страница 4: ...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 i...

Страница 5: ...he Sampling Rate 18 4 4 Short Clear Zero Correction 18 4 5 Choose Measure Parameter AT520 18 4 6 Relative value 19 4 7 Voltage Limiter 19 4 8 Set beep ON OFF 19 4 9 Deviation Display Mode 19 4 10 Lock out the keypad 20 5 Comparator 21 5 1 Turn ON OFF the Comparator 21 5 2 Setup the record number and comparator 21 5 3 Setup Beeper 21 5 4 How the comparator work 22 6 Handler Interface AT520 23 6 1 P...

Страница 6: ... TRIG Subsystem 34 8 7 1 SOURce 34 8 8 BEEPer Subsystem 34 8 8 1 BINmode 35 8 9 FETCh Subsystem 35 8 10 ERRor Subsystem 36 8 11 IDN Common Command 36 8 12 RST Common Command 36 8 13 TRG Common Command 36 9 Specification 38 9 1 AT520 Specification 38 9 2 AT520SE Specification 38 9 3 AT520L Specification 39 9 4 AT520M Specification 39 9 5 General Specification 40 9 6 Dimensions 40 ...

Страница 7: ...G Subsystem Tree 36 Table Contents Table 3 1 Front panel description 13 Table 3 2 Real panel description 14 Table 3 3 Keypad I description 14 Table 3 4 Keypad II description 15 Table 3 5 VFD description 15 Table 4 1 Range number range resistance and range change process AT520 17 Table 5 1 Comparator Output Resistance Voltage measurement mode 22 Table 5 2 Comparator setting example 22 Table 6 1 Pin...

Страница 8: ... packing box or shock absorbing material used to package the instrument has not been damaged Referring to Packing List in the packing box check that all packaged items supplied with the meter have been provided as per the specified optioned NOTE If an abnormality is detected contact the company and transport the meter to your nearest Applent Instruments sales or service office For inspection by th...

Страница 9: ... the temperature when performing calibration Humidity 15 to 85 at wet bulb temperature 40 C non condensation Altitude 0 to 2 000m Vibration Max 0 5 G 5 Hz to 500 Hz 1 4 Cleaning To prevent electrical shock disconnect the AT520x 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 AT520x internally WARNIN...

Страница 10: ...520SE AT520L AT520M User s Guide 10 Figure 1 2 How to remove the handle 1 Retracted 3 Carrying Position 2 Extended Remove Handle Lift the handle perpendicular to the unit while pulling it in the direction of 1 ...

Страница 11: ...istance meter and a volt meter 2 2 Functional Comparison Model Resistance Range Voltage Range Accuracy AT520 0 001mΩ 3 2k 0 0001 60 000V 0 3 AT520SE 0 01mΩ 3 2k 0 001 60 00V 0 5 AT520L 0 01mΩ 32 0 001 60 00V 0 5 AT520M 0 01mΩ 32 0 001 100 00V 0 5 2 3 Main Specifications and Features Some main specifications of the AT520x include Full AT520x specifications are included in Section 7 Uses 4 terminal ...

Страница 12: ...oing Comparator Function Up to 30 tables of comparator settings and Output HI IN LO and GD NG io signals Interface Built in RS232C Used SCPI with single 3 wire serial interface Handler AT520 Output the results of comparator EOC signal and input the numbers of the compare file Trigger signal from the PLC ...

Страница 13: ...8 9 Trig Esc Enter p n m k M G Trigger AC Ohmmeter Beep Hold Drive Sense UNKNOWN AT520SE Applent 1 2 3 4 5 6 7 Table 3 1 Front panel description No Name Description 1 POWER SWITCH Push down ON Push up OFF 2 VFD Displays measurement results instrument status and user s interface menus 3 Knob To choose menu item and input number 4 Terminals The 4 terminal Kelvin chip leads connect to the input termi...

Страница 14: ...n No Name Description 1 Comp Turn ON OFF Comparator 2 Shift Comparator Setup the comparator 3 Deviation display Include Absolute deviation ABS Deviation display and Comparator bin 4 Shift 30mV Limit Open circuit terminal voltage limiter Turn ON OFF 30mV Limit function 5 Rate Test rate Slow Med Fast 6 Shift I Mode Choose the test parameter 7 Clear Short Correction 8 Relative Relative zeroing value ...

Страница 15: ...hift Key Lock Keypad Locked 3 Beep Beep ON OF 4 Shift Beeper Setup Beep 5 Range Auto range ON OFF 6 Shift Remote Enable RS 232C and setup baud rate 7 0 9 Numeric keys 7 Shift p n m k M G Unit 8 Brightness Adjust VFD brightness 9 ESC Exit and back to measurement mode 10 Enter Determine settings 3 4 VFD Figure 3 5 VFD Table 3 5 VFD description ID Name Description Lit Trade Mark RS 232C Remote Interf...

Страница 16: ... SET Comparator Set HIGH Upper The upper limits of the comparator LOW Lower The lower limits of the comparator Keypad Lock DH Data Hold EX External Trigger Trig Manual Trigger F M S Sampling rate F Fast M Medium S Slow VLMT Voltage Limit Open circuit terminal voltage is limited to 20mV Range No Record No Shift Shift Shifted to the 2nd Function 3 5 Power On Off Power On Power Off 3 5 1 Warm up Time...

Страница 17: ... scale value of the measurement range being used Conversely if the measured impedance is much lower than the full scale value of measurement range being used the measurement accuracy will be reduced This sometimes cause a discontinuity occurs in the measurement values at the measurement range boundaries If measurement range is set to Auto range the impedance curve will skip when impedance range ch...

Страница 18: ...you can press Rate key to choose Fast 20 readings s Use FAST if speed is of primary importance at the expense of increased reading noise and fewer usable digits Medium 6 readings s Use Medium when a compromise between noise performance and speed is acceptable Slow 1 readings s SLOW provides better noise performance at the expense of speed 4 4 Short Clear Zero Correction The SHORT correction functi...

Страница 19: ...e voltage applied to the DUT is limited to a maximum of 30mVpeak typical 20mVpeak This protects the oxide film on the contact surface of the DUT If you use AT520x to test battery keep voltage limiter OFF Step1 Under measurement mode Press Shift Key Shift appears lit on the VFD Step2 Press 30mV Limit key VLMT appears lit 4 8 Set beep ON OFF When the beep is set to ON the buzzer can be set to sound ...

Страница 20: ...D no 2 line will display the deviation value ABS Measurement Value Nominal Value ABS Nominal Value 100 4 10 Lock out the keypad Step1 Under measurement mode Step2 Press Shift Key Lock key to lock unlocked the keypad Step3 The VFD no 2 line will display the deviation value indicator lit means the keypad is locked ...

Страница 21: ...r Knob to choose the record number from 1 to 30 Step4 You can a Press Enter key to enter the comparator state to setup nominal value and limit value b Or press Esc to exit from comparator setup and the record number is stored Step5 Press Shift Comparator to setup comparator Step6 Press or knob to choose the resistance s nominal value 1st line upper limit value 2nd line lower limit 3rd line Step7 P...

Страница 22: ...results of its output is NG IN Accordance with the above settings to test a battery the measured results of resistance 100 m voltage 1 51 V then sorting the results of its output is GD IN Accordance with the above settings to test a battery the measured results of resistance 150 m voltage 1 51 V then sorting the results of its output is NG Hi Accordance with the above settings to test a battery th...

Страница 23: ...tic screening system composed of the AT520 and the handler 6 1 Pin Assignment Table 6 1 Pin assignment Table 6 2 Description of Handler Interface Input Signals 5 TRIG External Trigger Signal Rising edge 8 COMP 4 Comparator Record Selector 1 thru 30 See Table 6 3 9 COMP 3 10 COMP 2 11 COMP 1 12 COMP 0 Table 6 3 Comparator Record Selection Truth Table COMP 4 0 Record COMP 4 0 Record COMP 4 0 Record ...

Страница 24: ...22 Multi strand 0 32 mm2 AWG 22 Usable limits Single strand 0 32 to 0 65mm dia Multi strand 0 08 to 0 32mm2 Standard insulation stripping length 10mm Button pressing tool Blade screwdriver shaft diameter 3 tip width 2 6mm To prevent damage to the handler avoid applying voltage or current exceeding the rated value In order to avoid electric shock turn off the instrument power before plugging in or ...

Страница 25: ...t is obtained by connecting pull up resistors inside or outside of the AT520 6 4 3 Power supply The power supply for the judgment output signal pull up and that for the operation output signal pull up and input signal drive can be set separately You can select from 3 3V to 35V external power supply Figure 6 2 Typical Circuit Diagram of Handler Interface Input signals 1 2 4 3 R 499 EXT DCV INPUT Fi...

Страница 26: ...le FAST 52ms 54ms 56ms MEDIUM 193ms 195ms 197ms SLOW 1 05s 1 065s 1 07s t2 Trig pulse width 1ms t3 Trig Delay Time 25 s t4 AD Time EOC BUSY FAST 44ms 46ms 48ms MEDIUM 186ms 188ms 190ms SLOW 1 05s 1 056s 1 07s t5 Print Result Time 7ms 8ms 9ms t6 Handler Out to EOC Time 10 s t7 Comparator input signal hold time 1ms ...

Страница 27: ... null modem DB 9 cable Cable length should not exceed 2m Figure 7 1 The RS 232 connector in the real panel Table 7 1 RS 232 connector pinout NAME DB 25 DB 9 NOTE DCD 8 1 Not Connection RXD 3 2 Transmit data TXD 2 3 Receive date DTR 20 4 Not Connection GND 7 5 Ground DSR 6 6 Not Connection RTS 4 7 Not Connection CTS 5 8 Not Connection Make sure the controller you connect to AT520x also uses these s...

Страница 28: ...e knob to choose 4800 9600 12800 19200 38400 57600 Steip5 Confirm your selection by pressing ENTER 7 3 SCPI Language Standard Commands for Programmable Instruments SCPI is fully supported by the RS 232 interfaces NOTE AT520x ONLY supports the SCPI Language ...

Страница 29: ...e parameter or an RS 232 command A square bracket indicates that the enclosed items are optional n Command Terminator 8 3 Command Structure The AT520x commands are divided into two types Common commands and SCPI commands The common commands are defined in IEEE std 488 2 1987 and these commands are common for all devices The SCPI commands are used to control all of the AT520 A520SE s functions The ...

Страница 30: ...rom the highest level a semicolon must be used as the separator and then a leading colon which shows that the restarted command is a command at the top of the command tree must follow For example func rang 5 beep bin good The common commands can restart only after a semicolon on a multiple command line For example func rang 8 IDN auto on Command abbreviations Every command and character parameter ...

Страница 31: ...breviation rules are the same as the rules for command headers B Numeric Data a interger For example 1 123 123 b fix float For example 1 23 1 23 1 23 c floating point For example 1 23e3 5 67e 3 123k 1 23M 2 34G The available range for numeric data is 9 9E37 When numeric data is used as a parameter the suffix multiplier mnemonics and suffix units The suffix multiplier must be used with the suffix u...

Страница 32: ...em command group sets the measurement parameter and measurement range Figure 8 2 FUNCtion Command Tree 8 6 1 RANGe AUTO The RANGe AUTO command sets the auto range to ON or OFF Command Syntax FUNCtion RANGe AUTO ON OFF 1 0 Parameters ON OFF 1 0 where 1 ON ASCII decimal 49 0 OFF ASCII decimal 48 For example Tx func rang auto off The auto range will set to manual Query Syntax FUNCtion RANGe AUTO FUNC...

Страница 33: ...Ction RATE slow medium med fast Parameters slow medium med fast For example Tx RATE fast Query Syntax RATE Query Response slow medium fast For example Tx RATE Rx fast Constraints none 8 6 4 DEV The DEV command sets deviation display mode The deviation display at No 2 Line of the VFD Command Syntax FUNCtion DEV ABSolute PERCent BINout OFF Parameters ABSolute PERCent BINout OFF For example Tx func d...

Страница 34: ...hould be set to manual 8 7 1 SOURce The SOURce command sets the trigger mode Command Syntax TRIG SOURce internal int manual man external ext Parameters internal int manual man external ext For example Tx TRIG SOUR man Query Syntax TRIGger SOURce Query Response internal int manual man external ext For example Tx TRIG SOUR Rx manual Constraints none 8 8 BEEPer Subsystem The BEEP subsystem command gr...

Страница 35: ...good notgood not For example Tx beep bin good Query Syntax BEEPer BINmode Query Response good notgood For example Tx beep bin Rx good Constraints None 8 9 FETCh Subsystem The FETCh subsystem command group is a sensor only command which retrieves the measurement data taken by measurement s initiated by a trigger Figure 8 5 FETCh Subsystem Tree Query Syntax FETCh Query Response float float float flo...

Страница 36: ... returns AT520x Version Figure 8 7 IDN Common Command Tree Query Syntax IDN Query Response model version For example Tx IDN Rx AT520 V2 00 8 12 RST Common Command RST restarts instrument Figure 8 8 RST Common Command Tree Command Syntax RST Parameters none For example Tx RST Rx Wait for 3s Query Syntax none Constraints none 8 13 TRG Common Command The TRG common command is used to enable a measure...

Страница 37: ...Command Reference 37 Command Syntax TRG Parameters None Query Response float float Where float Rx float Vx For example Tx TRG Rx 1 0000e 1 1 5000e 1 TRG ...

Страница 38: ...nt Range Maximum display value Resolution Fast Medium Slow Meas current 1 10mΩ 32 000mΩ 1 Ω 0 5 rdg 6dgt 0 3 rdg 4dgt 0 3 rdg 3dgt 9mA 2 100m Ω 320 00mΩ 10 Ω 0 5 rdg 6dgt 0 3 rdg 4dgt 0 3 rdg 2dgt 1mA 3 1Ω 3 2000Ω 100 Ω 0 5 rdg 6dgt 0 3 rdg 4dgt 0 3 rdg 2dgt 100 A 4 10Ω 32 000Ω 1mΩ 0 5 rdg 6dgt 0 3 rdg 4dgt 0 3 rdg 2dgt 10 A 5 100Ω 320 00Ω 10mΩ 0 5 rdg 6dgt 0 3 rdg 4dgt 0 3 rdg 2dgt 5 A 6 1kΩ 3 20...

Страница 39: ... rdg 3dgt 9mA 2 100mΩ 320 00mΩ 100 Ω 1 rdg 6dgt 0 5 rdg 4dgt 0 5 rdg 2dgt 1mA 3 1Ω 3 2000Ω 1mΩ 1 rdg 6dgt 0 5 rdg 4dgt 0 5 rdg 2dgt 100 A 4 10Ω 32 000Ω 10mΩ 1 rdg 6dgt 0 5 rdg 4dgt 0 5 rdg 2dgt 10 A Open circle voltage 20mV peak max when limiter is ON Table 9 6 AT520L Voltage Measurement Range Maximum display value Resolution Fast Medium Slow 1 6V 6 000V 1mV 0 1 rdg 6dgt 0 1 rdg 4dgt 0 1 rdg 2dgt ...

Страница 40: ...nd Manual Correcting Short Clear Zero Comparator function Output NG LO GD IN NG HI up to 30 tables Buzzer GD PASS and NG FAIL Measurement terminals 4 terminals Interfaces RS232 Handler interface AT520SE AT520L option Programming language SCPI Environment Temperature and humidity range 15 35 80 RH or less Operating temperature and humidity range 10 40 10 90 RH Storage temperature and humidity range...

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