M602 manual - meatest.cz
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1. 602 Programmable Resistance Decade Operation manual MEATEST M 602 Resistance Decade POWER MEN esp 1 ESC 602 Programmable Resistance Decade MEATEST Content 1 USE OF THE INS TRUMEN Twssscesiivssesscessscossssesescssessesscaccsocssostsossensscdsssossesssbeoseseseccssesasecsciudseoseaseeseseoscees 4 2 CONTENTS OF DELIVERY sccccsssssssesessessssoocesescevsesenscesussesossusesscuenssssevsosesssesessssensacesscndessssevsssesssessdeusveceses 4 3 TECHNICAL DATA csssstsscccsscscscecssss cssssscscsssststccsssscrsssssets cssscsosscsssesisoesssessossorrissrssssssssvsssisoeccscsssessesssssovsress 4 4 PREPARATION FOR USE scicccccccicecssscscess ccscsceosc cesescescecssscscocesscisscssccsccsssuc cscosscssocssuescscvesecssossssescesvscessose 7 4 1 MTP 7 4 2 WARM UP A 7 5 DESCRIPTION aS wu susyata ys eska sas A re 8 ok ERONTPANBD uu L u u Sa 8 KOD LAA E e e A 8 OA T E ias E 8 PPE y ua wu acamus e E n A A PAA E E RE E LT E E T T TA 8 5 2 REAR PAND ua a P u a quae 9 6 OPERATION c ccsciscicscciscicccviscccocviscicocs scscesssscccecesscscesescessscmsscsces ssessscsssstssesvssccvosvssesseeviscssosuesv scccciscssesnssesrese 9 6 1 SWITEH ON AND OPE uuu asist sage ebanu seu aae Sha yest O2. After switching on decade comes to standard mode Following information is shown on the display 166 C Pt igg IFT56E In the upper row actually simulated temperature C or generated resistance Q is displayed In the lower row type of simulated temperature sensor Pt100 set up temperature scale IPTS68 ITS90 according to the IEC751 standard or US according to US JIS standards are displayed After pushing MENU key SETUP function is activated 6 4 Standard mode cursor keyboard After pushing ENTER key in numerical mode the decade change the display to the cursor mode Following information is shown on the display C IPTS6S T Arrow symbol in right corner informs that cursor function of keys 2 4 6 8 is initialized blue signs on front panel foil Buttons T enable step up or down number on active position With buttons lt active position of cursor can be moved left or right With ENTER key can be switched between cursor and numerical keyboard in this mode After pushing the key MENU SETUP function is activated Numerical keyboard With numerical keys value of temperature or resistance can be directly entered Recently entered value 15 displayed in brackets under the actually set value To confirm new value push the key ENTER C 162 8 Pushing the key ENTER switches keys 2 4 6 8 function between cursor and numerical Press
3. coefficient 6180 Range of setting 60 C to 300 C 76 F a 572 F Parameter RO resistance at 0 C can be set up in range 10 Q to 20 000 Q User by user defined temperature function As default NTC thermistor sensor with temperaure function R T 330 exp 4050 1 298 15 1 T 273 15 is delivered Range of simulation is 30 C to 110 C This function can be changed in MEATEST Company only extra ordered option Please specify in your order Short simulates short on the output terminals Function Short is extra ordered option Open simulates open on the output terminals Function Open is extra ordered option Items from MENU are displayed on lower row After selecting an item and pressing the button ENTER symbol of this new selected temperature resistance function is written to upper row Selected function is valid even if the instrument is switched off and on again except of Short and Open functions Pt Ni resistance at 0 C The function enables to set up parameter RO for temperature sensors Set value RO is valid for both Pt and Ni sensors New value can be written after changing keyboard meaning to numerical by pushing ENTER Allowed range is from 100 to 2000 10 to 20000 for M602A version To confirm new value press ENTER New value is valid even if the instrument is switched off and on again 11 Operation manual MEATEST M 602 Programmable Resistance Decade T unit temperature uni
4. version M602 Vxxx1 Period for fully battery charging is approx 40 hours If the instrument has been stored for more than 3 months without connected external power line adapter battery should be charged 12 2 Battery replacement version M602 Vxxx1 Internal battery is sealed lead acid maintenance free long life rechargeable battery with voltage 12V and capacity 2 6Ah To replace battery use following procedure e Disconnect external power supply adapter and RS 232 IEEE488 cable e Switch decade off Dismount 4 screws located in the corners of the rear panel e Remove slightly top cover e Disconnect connectors from the battery and dismount metal belt to release battery e Replace battery pack Connect fresh battery and mount it into the case in opposite procedure Operation manual 24 602 Programmable Resistance Decade MEATEST 13 Ordering information options M602 Vxxxx basic version 100 300kQ M602A Vxxxx extended version 0 10 10MQ Bus M602 V1xxx RS232 M602 V2xxx IEEE488 Additional functions M602 Vx0xx none M602 Vx1xx Short Open function Housing M602 Vxx0x table version 602 1 module 19 M602 Vxx2x table version with holder Power supplying M602 Vxxx0 power line adaptor M602 Vxxx1 battery power line adaptor Example of order 602 2110 resistance decade 0 10 1OMQ IEEE488 Short Open 19 rack without battery Manufacturer
5. D SUB MALE Cable between decade and computer description configuration 1 1 D Sub 1 D Sub 2 M 622 8 4 Remote control IEEE488 optionaly The list of commands is valid for version of decade with IEEE488 interface The instrument performs the following functions based IEEE488 bus commands SH1 AH1 T5 13 RL1 DC1 The instrument also recognizes the following general commands DCL Device Clear resets the instrument to its basic state SDC Selected Device Clear resets the instrument to its basic state Bo GTL Local switches remote control off 004 Dos LLO Local Lock Out switches the local control off the instrument ed GNO TW PAIR WOM N cannot be controlled from the front panel NDAC IFC GND TW PAIR WINDAC GND TW PAIR WIIFC GND TW PAIR W SRQ ATN GND TW PAIR W ATN SHIELD 12 SIGNAL GROUND Commands are identical to the commands for RS 232 interface Detailed description is shown in chapter 8 2 21 Operation manual 602 Programmable Resistance Decade 8 5 program simple operating program DecadeAssistant is supplied with decade in order to provide easy operation of the instrument from the computer and to check the RS 232 line IEEE488 bus of the instrument The installation CD ROM contains a program for MS WINDOWS only you can communicate with the instrument through standard serial line IEEE488 with For example you c
6. ESC key to exit setting value from numerical keyboard mode BSP key deletes last entered number Operation manual 10 602 Programmable Resistance Decade MEATEST 6 5 Setup mode This mode enables to set or display some auxiliary parameters To enter this mode push the key Function Pt1lHkh t in standard mode To leave setup mode push the key ESC With cursor keys T J following items in setup menu can be displayed Function With buttons following functions can be set up R resistance function Total range of resistance is 10 Q to 300 KQ 0 1 Q to 10 MQ Pt 68 simulation of Pt temperature sensors according to standard IEC 751 temperature scale IPTS68 coefficient 1 3850 Range of setting 200 C to 850 C 328 F to 1562 F Parameter RO resistance at 0 C can be set up in range 10 Q to 20 000 Q Pt 90 simulation of Pt temperature sensors according to standard IEC 751 temperature scale ITS90 coefficient 1 3851 Range of setting 200 C to 850 C 328 F to 1562 F Parameter RO resistance at 0 C can be set up in range 10 Q to 20 000 Q Pt US simulation of Pt temperature sensors according to standard US JIS temperature scale ITS90 coefficient 1 3851 Range of setting 200 C to 850 C 328 F to 1562 F Parameter RO resistance at 0 C can be set up in range 10 Q to 20 000 Q Ni simulation of Ni temperature sensors according to standard DIN 43760
7. a 9 6 2 DECADE CONNECTION O aarre 9 6 3 STANDARD MODE NUMERICAL KEYBOABID u UU C0000092 10 6 4 STANDARD MODE CURSOR KEYBOARD 0 0sssesessvesssovevsevvoesvessossesevsvessesssvssessvsossoosbossbovavebesoesses 10 6 5 SETHEFMODE EE A A tiap S eee EE EA Banta 11 6 6 CALIBRATION MODEL L IR l 14 7 PERFORMANCE VERIFICATION TEST 16 8 REMOTE CONTRO Licissssccccssssssosssstesesenseceseondsosssendesesnsessseedbucesosvcncesbusevdesonseseuteucsssesesssdesscseudevssesessossseuses 18 8 1 41 515 29 4 5 AO La E E E 29000 20027 AM EEA E AE E E Ska WE k saq 00 18 8 2 COMMAND DI u gua E E a A E A a a EEE A A E E ai E EER AR FE RE Re 18 8 3 REMOTE CONTROL JLI aa Slaap E EERENS 21 8 4 REMOTE CONTROL IEEE EA488 OPTIONALY Jene Ena I CG cites ERRER ERR Sa RSI waqsa 21 8 5 6135244382 2 1 AVA 2 2200022272 EEEE OEE Ae EEEE 22 9 MODULE 19 VERSION M602 VXX1N 23 10 TABLE VERSION WITH HOLDER VERSION M602 VXX2X D 23 11 ELECTRIC FUNCTION s sccscoccisc cosssccssscv scsccs
8. in recommended points Required equippment Ohm meter nominal accuracy 0 005 in range 200 mQ to 10 MQ type HP34401A or KE2000 Decade setting Switch decade to the resistance function Connect standard multimeter to the decade output terminals Use four wire connection technique Range of the test output resistance on terminals R checking Procedure Use following procedure to perform parameter verification test 1 Switch both instruments on and let them for 1 hour stabilise in the laboratory with ambient temperature 23 2 C Connect resistance decade terminals R4W to the standard ohm meter multimeter 2 Case of decade should be grounded or connected to the Lo terminal of multimeter 3 Check resistance value in points according to Table I Maximal deviations M602 Nominal value Q Max deviation 19 0 025 36 0 033 70 0 050 140 0 085 250 0 050 500 0 100 1000 0 200 2000 0 400 4000 0 800 8000 1 6 16000 8 30000 15 60000 60 120000 600 250000 1250 Operation manual 16 602 Programmable Resistance Decade MEATEST Maximal deviations M602A Nominal value C Max deviation 0 18 0 015 0 3 0 015 0 7 0 015 1 3 0 016 2 5 0 016 5 0 0 018 9 5 0 020 19 0 025 36 0 033 70 0 050 140 0 085 250 0 050 500 0 100 1000 0 200 2000 0 400 4000 0 800 8
9. simulation extra ordered option ONNAWNFO M 602 confirms execution with string lt cr gt lt 1f gt Example 1 lt gt sets 100 sensor simulation I D device identification IDN Response contains name of manufacturer model type number serial number firmware version Example If query IDN lt cr gt is sent decade returns response MEATEST M602A 462351 2 4 lt cr gt lt 1f gt Switching off PO The command will switch the decade off The command is executed if decade is supplied from internal battery only Correct execution is confirmed with string lt cr gt lt If gt Example PO lt cr gt switches decade off if not used external power adapter RO setting reading lt DNPD gt Command sets resistance value RO at temperature 0 C Set value RO is valid for all types of simulated temperature sensors lt DNPD gt It represents resistance value RO in Q Limits are shown in chapter Technical data M 602 confirms execution with string lt cr gt lt If gt In case of query M 602 returns set value Example R100 lt cr gt sets value to 100 Pt100 1100 After query R lt cr gt decade returns string 100 lt cr gt lt If gt 19 Operation manual MEATEST M 602 Programmable Resistance Decade Temperature unit setting lt gt 01 19 Command sets used temperature unit
10. switching resistance circuit may be opened for a period about Ims typ 300us Operation manual MEATEST M 602 Programmable Resistance Decade Accuracy Specified accuracy is valid after 10 minutes warm up in temperature range 23 5 C Uncertainties include long term stability temperature coefficient linearity load and line regulation and traceability of factory to National calibration standards Accuracies assigned in are related to the set value Specified accuracy is one year accuracy Resistance accuracy basic version Resistance accuracy version M602A 10 000 Q 199 999 Q 0 05 15 MQ 0 1 0 199 999 Q 0 05 15 MQ 200 000 Q 9 999 0 02 200 000 2 00000 0 02 10 000 50 0 0 05 2 0001 MQ 10 0000 MQ 0 05 50 1 kQ 100 0 kQ Pt temperature sensor simulation accuracy Pt10 Pt200 Pt201 Pt20000 Ni temperature sensor simulation accuracy Ni10 Ni200 Ni201 Ni20000 Temperature coefficient outside of the reference temperature range is 10 of the stated specification per C Short and Open simulation version M602 Vx1xx only When function Short is selected output resistance is lower than 60 mQ Maximal allowed current is 500 mA When function Open is selected output resistance is higher than 1 GQ Maximal allowed voltage is 120 Vdc 50 Vac Note Resistance values in range 0 1 Q 10 are calibrated absolutely Resistance value is not defined against
11. 0 sets degree Celsia C e sets degree Fahrenheita M 602 confirms execution with string Ok lt cr gt lt 1f gt Example U0 lt cr gt sets C as temperature unit Status reading V M 602 returns device status in form FxUx lt cr gt lt If gt On positions of signs there are values corresponding to the actual status of decade Example After query V lt cr gt decade returns for example string F2U0 lt cr gt lt 1f gt which means Pt 90 C actual setting When unknown command is received M 602 returns string lt cr gt lt f gt Correctly executed command is confirmed with string Ok lt cr gt lt lf gt When correct query is received M 602 returns response in above described format All commands must contain sign lt cr gt or lt lf gt at the end Both small and large letters can be used Operation manual 20 602 Programmable Resistance Decade MEATEST 8 3 Remote control RS232 Transmission baud rate can be selected from 300 to 19200 Bd Number of data bits is 8 number of stop bits is 1 parity is not used For data flow control neither hardware handshake RTS CTS nor program handshake XON XOFF is used RS 232 line is from other electronic circuits galvanically isolated RS 232 connection 1 5 Pin Label VO Description 00000 2 TXD output Transmitter 6 3 3 RXD input Receiver 5 GND Ground 9 pin connector
12. 000 1 6 16000 3 2 40000 8 80000 16 150000 30 300000 60 700000 140 1500000 300 3000000 1500 6000000 3000 17 Operation manual 602 Programmable Resistance Decade 8 Remote control Standard version is equipped with RS232 bus IEEE488 version is described in chapter 8 4 Commands for both versions are the same 8 1 Commands Communication between decade and computer consists of flow of periodically alternating commands type command response or query response Command is always a letter followed by parameter and ended by control sign lt cr gt lt lf gt Response is always ended with control signs lt cr gt lt gt Syntax description lt DNPD gt Decimal Numeric Program Data this format is used to express decimal number with or without the exponent lt CPD gt Character Program Data Usually it represents a group of alternative character parameters E g 0111213 indicating request for value of parameter specified command other parameter than question mark can used A flag indicating a request for the parameter specified by the command This command permits a value to be set as well as requested lt gt carriage return ASCII code 13 This code executes the program line lt gt line feed ASCII code 10 This code executes program line 8 2 Command list Value setting reading A lt DNPD gt T
13. 488 bus is used for connecting decade to the computer 2 Contents of delivery RS232 version IEEE488 version Resistance decade M602 V 1xxx Resistance decade M602 V2xxx Power line adapter Power line adapter Cable RS 232 Demo program Demo program User s manual User s manual Test report Test report 3 Technical data Only values functions ranges with signed accuracy in relative or absolute expression or where limits are specified are guaranteed Resistance range A 10 Q 300 kQ basic version 100 mQ 10 MQ version M602A SHORT OPEN terminals version M602 Vx1xx only Pt sensor temperature simulation 200 000 C 850 000 328 F 1562 F Ni sensor temperature simulation 60 000 C 300 000 C 76 F 572 F Type of temperature sensors Pt100 Pt1000 Ni100 Ni1000 basic version Pt10 Pt20000 Nil0 Ni20000 version M602A Resolution 0 001 Q for 10 000 300 000 2 basic version 0 010 for 300 01 1000 00 Q 0 1 Q for 1000 1 3000 0 Q 1Q for 3000 10000 Q 0 01 kQ for 10 00 30 00 0 1kQ for 30 0 100 0 1kQ for 100 300 kQ Operation manual 4 602 Programmable Resistance Decade MEATEST Pt temperature standards Ni temperature standards Resistance temperature coefficient Maximal dissipation power Maximal current Maximal voltage Connection of output terminals Connection of temperature sensors Reactio
14. MEATEST s r o tel 420 543 250 886 elezn 509 3 619 00 Brno fax 420 543 250 890 Czech Republic meatest meatest cz www meatest com 25 Operation manual
15. SHORT position Functions Short and Open positions are intended only for functional checking of tested instrument Operation manual 6 602 Programmable Resistance Decade MEATEST 4 Preparation for use M 602 Resistance decade is supplied from external power line adapter Range of power line voltage is from 100 V to 240 V 50 60 Hz M 602 is predestinate to work in temperature range 5 40 C Instrument is aimed for use in horizontal or slope position After unpacking put the instrument on flat desk If the instrument was stored out of range of reference temperatures let it stabilize for one hour 4 1 Switching on Connect the power line adapter to the decade and push the POWER button After switching on internal tests are performed for approx 3s On the display type name of the instrument and manufacturer are displayed during internal test After finishing setting to the position before last switching off is performed Factory setting is resistance mode value 1000 Decade enables to store to internal memory the Startup state See chapter Operation for more details 4 2 Warm up time Decade can operate immediately after switching on After 10 min warm up period it meets specified accuracy During warm up period it is not recommended to perform recalibration 7 Operation manual 602 Programmable Resistance Decade 5 Description 5 1 602 Resistance De
16. an set value or function on the decade For IEEE488 connection this DecadeAssistant requires properly configured National Instruments IEEE488 card Download on www meatest com Operation manual 22 602 Programmable Resistance Decade MEATEST 9 Module 19 version M602 Vxx1x Decade can be ordered as 19 module for easy assembling into a 19 rack Module height is 3HE 10 Table version with holder version M602 Vxx2x Decade can be also ordered in table version with the holder 11 Electric function Resistance elements are switched to the output terminals through reed relays in binary code system The relays used are types with low thermoelectric voltage The resistors are metal type with low temperature coefficient Metal housing is connected to the ground terminal only The board with resistors and relays creates independent mechanical block CPU unit with one chip micro controller generates all necessary internal control signals Calibration data and set up parameters are saved in EEPROM memory 23 Operation manual 602 Programmable Resistance Decade 12 Mechanical construction Decade housing is standardised aluminium type one Keyboard with display and output terminals are located on the front panel External power supply connector and RS 232 connector are located on the rear panel Internal battery is fixed to the rear panel inside the housing 12 1 gt Battery maintenance
17. cade FOWER ARRA C 5685 T front panel there are located all main control keys display and output terminals Keyboard Numerical values can be entered from the numerical part of keyboard Keys with number 2 4 6 8 have also next meaning as display cursor keys Except numerical there are following keys in the keyboard Key Meaning MENU enters to the SETUP CALIBRATION MENU BSP deletes last entered number ESC cancels last entered value or leaves last set mode ENTER confirms set value or confirms selected item in MENU or switches between numerical function black label and display cursor function blue label of the keys 2 4 6 8 Switching over is indicated with symbol 7 in right low corner of the display POWER switches on and off the decade When switching off is requested two times the key must be pushed to confirm switching off Display Two row alphanumerical display is used for displaying all information Main value i e simulated temperature or output resistance is displayed in upper row Auxiliary information is displayed in lower row Depending on status following symbols can be displayed in right low corner T keys 2 4 8 are switched to the cursor function blue labels are valid B decade is in remote control via RS232 IEEE488 optionally internal battery is out of power power line adapter is connected Output terminals Outp
18. calibration accuracy are described Standard terminals omo m o R omo Operation manual 14 602 Programmable Resistance Decade MEATEST Notes Blue values written italic are M602A version only Resistances RO7 to R14 should be calibrated before resistances R31 to R41 There is a small dependency between these values Process of calibration consists of measuring partial resistances and writting their actual values into the decade 15 Set the first calibration point resistance element Use keys T the element Measure resistance of the selected element Use ohm meter with appropriate accuracy in 4 wire connection and with appropriate accuracy Change function of the keyboard to the numerical one by pushing the key ENTER Write measured resistance value there is original value in the first row and newly entered value in the second row Newly entered value must be written down in units Ohm kar 19 it 19 2518 Confirm new calibration data by pushing the key ENTER Repeat above described procedure for all resistance elements Operation manual MEATEST M 602 Programmable Resistance Decade 7 Performance verification test Parameter verification procedure is described in the chapter Verification procedure is based on measuring resistance on the decade output terminals with standard multimeter
19. he command sets resistance value resistance function or temperature value temperature sensor simulating function lt DNPD gt It represents resistance value in Ohm or simulated temperature in C When temperature parameter is used both negative and positive values are acceptable For resistance parameter positive value only is acceptable Limit values are shown in chapter Technical data In case of control the decade confirms correct setting with string lt cr gt lt If gt In case of query M 602 returns set resistance temperature value in the same format as it is on the display number of decimal places For example value 120 C is returned as 120 000 lt cr gt lt lf gt Positive numbers are sent without polarity sign Example Command A123 564 lt cr gt sets temperature 123 564 C if decade is in temperature simulation function and 123 564 if decade is in resistance function Operation manual 18 602 Programmable Resistance Decade MEATEST If query A lt cr gt is sent decade returns response in format 123 564 lt cr gt lt 1f gt Decade function setting lt gt 0 1 2 3 4 5 S O Following function can set resistance mode Pt 68 temperature sensor simulation Pt 90 temperature sensor simulation Pt US temperature sensor simulation Ni temperature sensor simulation User temperature sensor simulation Short simulation extra ordered option Open
20. n time Terminals Interface Power supply Operating period from battery Reference temperature Working temperature Storing temperature Housing Dimensions table version Dimensions 19 module Weight Isolation resistance between output terminals and housing 0 00001 Q for 0 10000 2 00000 2 version M602A 0 0001 for 2 0001 20 0000 2 0 001 Q for 20 001 200 000 Q 0 01 Q for 200 01 2000 00 0 10 for 2000 1 20000 0 19 for 20001 200000 2 0 01 kQ for 200 01 2000 00 0 1 kQ for 2000 1 10000 0 kQ 0 01 C for Pt Ni IEC 751 1 3850 for IPTS68 IEC 751 1 3851 for ITS90 US US JIS 1 3916 DIN 43760 6180 lt 25 ppm C 2W 0 6A 120 Vdc 50 Vac 2 4 wire 2 3 or 4 wire 4 ms instrument terminals diameter 4mm gold plated RS232 as standard IEEE488 optionally power line adapter 1S VDC 2A 100 240 V 50Hz internal battery 12 V type B WP 1 9 12 optionally 6 hours 18 28 5 40 C 10 C 50 ALU W 364 mm H 111 mm D 316 mm without holder W 483 mm H 133 mm D 316 mm 4 5 kg gt 2 GQ at 500V DC Reaction time means time interval between setting up value from front panel or receiving command from remote control bus and settling set up value on output terminals Notes e Only data shown with tolerance or with band of limits are tested All other values have informative character e During over
21. password if changed If you forget the calibration code you have to send the decade to the manufacturer Operation manual 12 602 Programmable Resistance Decade MEATEST Serial number Displays the serial number of the decade The parameter cannot be changed Write startup Enables to define state that is set after switching the decade on The instrument writes to the memory the actual state function and value after pushing ENTER key Cancel startup Clears defined Startup state Instrument returns to standard mode when after switching the power on decade sets value 100 Q 100 C 13 Operation manual MEATEST M 602 Programmable Resistance Decade 6 6 Calibration mode In this mode resistance elements of the decade can be recalibrated Access to the calibration mode is enabled after double pushing the key MENU from the standard mode or after single pushing the same key from the SETUP mode Correct password must be entered before calibration Without correct password the access to the calibration mode is refused Default factory set calibration code is 00000 Return to standard mode is possible after pushing the key ESC Enter Recalibration procedure consists of measuring of 36 basic resistance values and entering their actually measured data Among calibration values can be moved with keys In following table nominal values of calibration points and requested re
22. pressing or ON lighting is switched on can be set Selected parameter is displayed in lower row To change currently selected parameter press the key ENTER The newly set parameter is written into the upper row If the instrument is supplied from the external power adapter lighting is switched on permanently Note Display lighting influences significantly operating period from the internal battery If not used when instrument is supplied from internal battery the working period can be lengthen about 50 Calibration mode password setting Calibration password is a five digit number which must be entered to access the calibration mode If the password is set to 00000 this information is displayed in the Setup menu otherwise only symbols are shown Password can be changed New password can be entered directly from keyboard after changing keyboard meaning to numerical by pushing ENTER If previous password was 00000 simply type new 5 digit code and press ENTER New password is saved and cannot be read in MENU If previous password was non zero new password can be entered in two steps In the first step original password must be entered and confirmed by pressing ENTER If it is correct symbols 00000 are displayed Now new password can be entered and saved according to above described procedure New password is valid even if the instrument is switched off and on again Note it is advisable to write down actual
23. sssccsecs scicccvescecocessssscsssscscocv scccecssscscessss csosesscscessssesuscsevescs 23 12 MECHANICAL CONSTRUCTION 24 12 1 BATTERY MAINTENANCE VERSION M602 VXXX1 24 12 2 BATTERY REPLACEMENT VERSION 602 24 13 ORDERING INFORMATION OPTION S 25 3 Version 19 Operation manual 602 Programmable Resistance Decade 1 Use of the instrument Resistance decade M 602 is designed for checking of parameters of resistance meters and regulators and process meters which use external resistance sensors for non electric quantity measuring Set resistance value is created via appropriate combination of physical resistors Decade is equipped with build in function of direct simulation of most frequent temperature Pt and Ni sensors Low thermal voltage relays and stable resistors are used as main parts of the decade Actual set values are displayed on the front panel display Resistance decade is supplied from external power line adapter or internal battery M 602 is sophisticated instrument with its own re calibration procedure The procedure enables to correct any deviation in resistance without any mechanical adjusting Instrument is especially suitable for automatic testing procedures RS232 line optionally IEEF
24. t With buttons either C or F can be set up here Possibilities are shown in lower row After selecting one of them and pressing the button ENTER appropriate symbol is written to upper row New value is valid even if the instrument is switched off and on again Volume With keys lt gt values OFF beep off LOW volume low or HIGH volume high can be set Selected parameter is displayed in lower row To change currently selected parameter press ENTER key The newly set parameter is written into the upper row Baud rate RS 232 optionally IEEE488 address In standard version the function involves to set parameter baud rate of RS 232 interface With keys lt any value from the row 300 600 1200 2400 4800 9600 or 19200 Bd can be set Set baud rate is displayed in lower row To change currently valid value to the new value press the key ENTER The newly set baud rate is written into the upper row If the decade is optionally equipped with IEEE488 instead of Baud rate you can set IEEE488 address of instruments In decade with IEEE488 interface IEEE488 address can be set up here The address range is 0 to 30 The last set baud rate is valid even if the instrument is switched off Lighting Enables or disables lighting of the display With keys lt gt values OFF lighting is switched off 30 s lighting is switched on for 30 s after last key pressing 5m lighting is switched on for 5 minutes after last key
25. ut resistance is available on R output terminals Available is 2 3 and 4 wire connection Left terminal with symbol GROUND is connected with the housing Note During operation the GROUND terminal should be connected to the ground or Lo terminal of measuring instrument This connection prevents against interference with power supply voltage Operation manual 8 602 Programmable Resistance Decade MEATEST 5 2 Rear panel N reer Power line adapter a IEEE488 Power line adapter On the rear panel there are located power supply connector interface RS 232 connector optionally IEEE488 connector and serial number plate 6 Operation 6 1 Switch on and off Decade is switched on by pushing the key POWER To switch off the decade push the same key two times When supplied from internal battery decade is automatically switch off if for last 20 minutes no one key was pushed or if internal battery is discharged One minute before automatic switching off decade displays symbol and beeps to warn the user 6 2 Decade connection Output resistance is available on R output terminals Available is 2 3 and 4 wire connection Left terminal with symbol GROUND is connected with the housing Ground terminal should connected to the ground or Lo terminal of measuring instrument 9 Operation manual MEATEST M 602 Programmable Resistance Decade 6 3 Standard mode numerical keyboard
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