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8-4

IM 755601-01E

8.3 Handshaking

When using the serial (RS-232) interface for transferring data, it is necessary for
equipment on both sides to agree on a set of rules to ensure the proper transfer of data.
The set of rules is called handshaking. Because there are many handshaking methods
that can be used between the instrument and the PC, one must make sure that the same
method is chosen by both the instrument and the PC.
You can choose any of the four methods shown in the following table.

Data Transmission Control

(Control used to send data to a PC)

Data Reception Control

(Control used to receive data from a PC)

Software

handshaking

Software

handshaking

Table of Handshaking Methods ( indicates that it is supported)

HA. 0
HA. 1
HA. 2
HA. 3

OFF-OFF
XON-XON

XON-RS

CS-RS

Handshaking method

Stops

transmission

when X-OFF is

received.

Resume when

X-ON is received.

Stops transmission

when CB(CTS) is

false. Resume when

it is true.

No

handshaking

No

handshaking

Send X-OFF

when thereceived

data buffer is

3/4th filled. Send

X-ON when the

received data

buffer becomes

1/4th filled.

Set CA(RTS) to False

when the received

data buffer is 3/4th

filled. Set to True

when the received

data buffer becomes

1/4th filled.

Hardware

handshaking

Hardware

handshaking

Instrument's

menu

OFF-OFF

Data transmission control

There is no handshaking between the instrument and the PC. The X-OFF and X-ON
signals are treated as data, and the CS signal is ignored.

Data reception control

There is no handshaking between the instrument and the PC. When the received buffer
becomes full, all overflow data are discarded.
The RS signal is fixed to True.

XON-XON

Data transmission control

Software handshaking is performed between the instrument and the PC. When an X-
OFF code is received while sending data to the PC, the instrument stops the data
transmission. When it receives the next X-ON code, it resumes the data transmission.
The CS signal received from the PC is ignored.

Data reception control

Software handshaking is performed between the instrument and the PC. When the free
area of the receive buffer decreases to 64 bytes, the instrument sends an X-OFF code.
When the free area increases to 192 bytes, it sends an X-ON code.
The RS signal is fixed to True.

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Summary of Contents for 7556

Page 1: ...IM 755601 01E 4th Edition Digital Resistance Meter ...

Page 2: ...asing YOKOGAWA products YOKOGAWA provides registered users with a variety of information and services Please allow us to serve you best by completing the product registration form accessible from our website http tmi yokogawa com PIM 103 04E ...

Page 3: ...otice as a result of continuing improvements to the instrument s performance and functions The figures given in this manual may differ from the actual screen Every effort has been made in the preparation of this manual to ensure the accuracy of its contents However should you have any questions or find any errors please contact your nearest YOKOGAWA dealer Copying or reproducing all or any part of...

Page 4: ...C 4 120 VAC 6 220 VAC 8 240 VAC Power cord1 D UL CSA Standards Power Cord Part No A1006WD Maximum Rated Voltage 125 V Maximum Rated Current 7 A F VDE Standard Power Cord Part No A1009WD Maximum Rated Voltage 250 V Maximum Rated Current 10 A Q BS Standard Power Cord Part No A1054WD Maximum Rated Voltage 250 V Maximum Rated Current 10 A R SAA Standard Power Cord Part No A1024WD Maximum Rated Voltage...

Page 5: ...006WD VDE standard A1009WD BS standard A1054WD SAA standard A1024WD D F Q R 1 Power cord one of the following power cords is supplied according to the instrument s suffix codes 1 1 Make sure that the attached power cord meets the designated standards of the country and area that you are using it in H GB Standard A1064WD Note We recommend you keep the packing box The box is useful when you need to ...

Page 6: ...NG Use the Instrument Only for Its Intended Purpose This instrument is a resistance measuring device Do not use this instrument for anything other than as a resistance measuring device Check the Physical Appearance Do not use the instrument if there is a problem with its physical appearance Power Supply Ensure that the source voltage matches the voltage of the power supply before turning ON the po...

Page 7: ...Connection Connect the protective grounding before connecting to the item under measurement or external control circuit If you need to touch the circuit turn of its power and make sure that there are no voltages being generated Measurement Category The measurement category of this instrument signal input terminals is Other O Do not use it to measure the main power supply or for Measurement Categor...

Page 8: ...the WEEE directive this product is classified as a Monitoring and control instruments product When disposing of products in the EU contact your local Yokogawa Europe B V office Do not dispose in domestic household waste EU Battery Directive EU Battery Directive This directive is valid only in the EU Batteries are included in this product This marking indicates they shall be sorted out and collecte...

Page 9: ...nd limits 5 Making Measurements Describes how to make measurements 6 Other Functions Describes how to save and recall measured data and how to print out the data 7 Using the Handler Interface Describes the handler interface specifications how to setup the handler interface and the timing chart 8 Using the Serial RS 232 Interface Describes how to control this instrument from a controller such as a ...

Page 10: ...e displayed using special characters For details see section 1 3 Digital Numbers and Characters and A List of Menus page 1 4 Symbols used on pages in which operating procedures are given In chapters 3 through 9 on pages where operating procedures are given the following symbols are used to classify a description Keys Indicates the keys and indicators related to the setting Procedure Describes the ...

Page 11: ...ER key to confirm 1 2 3 4 REF LIMIT ENTER Ω ENTER Ω ENTER Ω CHECK SHIFT M Ω Contact check level Symbols Used in the Syntax The following table indicates symbols that are used in the syntax mainly in Chapter 10 These symbols are referred to as BNF Backus Naur Form symbols For details see pages 10 5 and 10 6 Symbol Meaning Example User Input Example Defined value PANel RECall NRf NRf 0 to 9 PANEL RE...

Page 12: ...ent 3 2 3 3 Connecting the Power Cord 3 3 3 4 Wiring 3 5 Chapter 4 Setting the Measurement Conditions 4 1 Switching the Limit Mode 4 1 4 2 Changing the Range Reference 4 2 4 3 Using the Comparator Function 4 4 4 4 Using the Contact Check Function 4 7 4 5 Setting the Measurement Time 4 8 4 6 Using the Trigger Function 4 9 Chapter 5 Making Measurements 5 1 Setting the Measurement Mode 5 1 5 2 Switch...

Page 13: ... 10 1 6 Programming of Various Functions 10 9 10 2 Commands 10 13 10 2 1 A List of Commands 10 13 10 2 2 CHECk contact CHECk Group 10 15 10 2 3 COMMunicate Group 10 16 10 2 5 HANDler Group 10 18 10 2 4 DISPlay Group 10 18 10 2 6 HEADer Group 10 19 10 2 7 LIMit Group 10 20 10 2 8 MEASure Group 10 22 10 2 9 MTIMe Meas TIMe Group 10 23 10 2 10 PANel Group 10 23 10 2 11 PRINt Group Option 10 24 10 2 1...

Page 14: ...use 11 12 Chapter 12 Specifications 12 1 Input Specifications 12 1 12 2 Trigger Specifications 12 3 12 3 Measurement Time Specifications 12 3 12 4 Contact Check Specifications 12 4 12 5 Comparator Specifications 12 4 12 6 Other Specifications 12 5 12 7 Handler Interface Specifications 12 5 12 8 Communication Specifications 12 6 12 9 General Specifications 12 6 12 10 External Dimensions 12 8 Index ...

Page 15: ...hat it is equal to the circuit s common electric potential the resistance can be determined by dividing the voltage at the LPOT terminal by the current In the contact check that is performed before or after the measurement a constant current is fed from the HCUR terminal to the HPOT terminal and from the LPOT terminal to the LCUR terminal The voltage that appears across these terminals is compared...

Page 16: ...ignal that is applied to the external trigger input terminal or the number 8 pin EXT TRIG of the handler interface Manual trigger Makes a measurement when the TRIG key on the front panel is pressed or whenever a trigger is activated via the communication interface Internal trigger Makes measurements at intervals which depend on the specified measurement time auto sampling Trigger Delay The measure...

Page 17: ...e Only the R key SETUP MEAS key SHIFT R key and STORE DATA key SHIFT 0 key are enabled Since all other keys are locked an erroneous operation resulting from pressing the wrong keys can be avoided However the TRIG key is enabled when the trigger mode is set to MANUAL and the RECALL DATA key is enabled when recalling data SETUP mode This mode is used to change the instrument s settings No measuremen...

Page 18: ...enu of the SETUP mode The first menu displayed in the main display in the SETUP mode is called the top menu The display returns to this menu when you confirm a setting or when you exit from a menu The top menu varies depending on the limit mode setting as follows When the limit mode is set to PCnt When the limit mode is set to R OHm Limit mode setting menu page 4 1 LIMIT MODE SHIFT 8 Deviation mod...

Page 19: ... of Menus Measured data store menu page 6 1 STORE DATA SHIFT 0 Number of stored data sets Measured data recall menu page 6 1 RECALL DATA SHIFT Communication interface setting menu page 8 7 and 9 6 I F SHIFT 3 Displayed only on instruments that have the optional GP IB interface ...

Page 20: ...asured data A4 size with measured data Percent limit Trigger delay Delay time in units of ms Trigger edge Rising Falling EOM pulse width in units of ms Initialize setup information Self test 1 Displayed on instruments that have the optional Centronics interface 2 Not displayed when the limit mode is set to absolute mode R 3 For the 755611 9 99 or 99 9 is displayed on the 755601 1 3 Digital Numbers...

Page 21: ...ta recall OFF OFF No SETUP MEAS SETUP SETUP Yes Limit mode PCNT PCNT Yes Percent limit 9 99 9 99 Yes EOM width 10 ms 10 ms Yes Communication interface Serial RS232 Previous condition Yes Serial RS232 Mode Normal Previous condition Yes Handshaking 0 Previous condition Yes Data format 0 Previous condition Yes Baud rate 3 Previous condition Yes Terminator 0 Previous condition Yes Header 0 Previous co...

Page 22: ...on the 755601 LO LIMIT display 4 digits on the 755601 Reference display Numerical key setting key page 2 2 Measurement input terminal page 3 5 Setting value setting display Main display 5 digits on the 755601 ALL TERMINALS 42 V PEAK TO 755601 Display Screen NORMAL MEAS LOCK SAMPLE EXTERNAL REFERENCE MANUAL FAST HI HI LIMIT LO LIMIT IN LO MΩ kΩ Ω Ω HIGH SPEED STORE DATA RECALL DATA CHECK REMOTE Rea...

Page 23: ...ontact check Lights while recalling measured data Lights while operating under remote control Lights during measurement mode The selected measurement time lights Indicates the comparator result Lights while storing measured data Switching between measurement mode and SETUP mode SETUP MEAS SHIFT R key This key is used to switch between measurement mode and SETUP mode The instrument is in the measur...

Page 24: ...is also used when selecting a parameter in the SETUP menu LIMIT key When entering numbers this key operates as a clear key It is also used when selecting a parameter in the SETUP menu Numerical keys Used when entering numerical values These keys are valid only when entering numbers The MΩ kΩ Ω and keys are used to set a unit on the numerical value TRIG key When the trigger mode is set to manual tr...

Page 25: ...y is detected in the test current shows the following Contact check error display When using the contact check function to make measurements the display shows the following when a contact check error occurs Other error displays When an error that is described in section 11 2 Messages and Corrective Actions occurs the corresponding error code is displayed as follows or Bar Display When the mode is ...

Page 26: ...r replacement Refer to page ii for the part number when placing an order General Handling Precautions Never place any objects containing water on top of the instrument This may cause problems Do not apply shock to the input section Applying shock to the input terminal or the probe can cause electrical noise to enter the instrument When the instrument is not being used for an extended period of tim...

Page 27: ...nt in a place where the ambient humidity is 30 or below take measures to prevent static electricity such as using an anti static mat Internal condensation may occur if the instrument is moved to another place where both the ambient temperature and humidity are higher or if the temperature changes rapidly In this case let the instrument adjust to the new environment for at least one hour before usi...

Page 28: ...t have protective grounding otherwise the protection function will be compromised Connecting Procedure 1 Check that the power switch on the rear panel is OFF 2 Connect the plug of the power cord that is included in the package to the power connector on the rear panel of the instrument 3 Plug the other end of the power cord into a power outlet that satisfies the conditions below The AC outlet must ...

Page 29: ...power cord securely connected Is the correct voltage coming to the power outlet See page 3 3 If the power switch is turned ON while pressing the SHIFT key the setup parameters are initialized to their factory default values For details regarding initialization see section 6 3 Initializing Setup Parameters on page 6 7 If the instrument still fails to power up after checking these points contact you...

Page 30: ...surement ALL TERMINALS 42 V PEAK TO Wiring Precautions The accuracy specifications can only be met if the following conditions given in the wiring example below are provided Wiring Example HCUR r1 Rx r2 Is r2 r1 HPOT LPOT LCUR Pre amp Circuit used to detect disconnection Circuit used to detect disconnection Circuit used to detect disconnection Circuit used to detect disconnection Constant current ...

Page 31: ...es as short as possible and use shielded cables In addition placing the resistor under measurement inside a shielded case and connecting the guard outside of the BNC connector and the shielded case with shielded cables are effective means of preventing noise Keep the capacitance of the shielded cable between the measurement input terminal and guard outside of the BNC connector under 300 pF Resonan...

Page 32: ...P mode 1 Press the SHIFT SETUP MEAS R key to switch to the SETUP mode If the MEAS LOCK indicator is off this operation is not necessary Switching the limit mode 2 4 3 Deviation mode Absolute mode ENTER LIMIT MODE SHIFT REF LIMIT 8 Ω Main display Explanation There are two limit modes You can select whether to use a deviation or an absolute value R for the comparator function Deviation mode The meas...

Page 33: ...splayed on the main display this operation is not necessary Changing the reference value 2 4 3 Numerical keys Press when the unit is MΩ REFERENCE display Press when the unit is kΩ Press when the unit is Ω CHECK MISC ENTER REF M Ω k Ω Ω If the value entered using the numerical keys is not correct an error 810 is displayed for approximately one second and the display returns to step 3 Explanation Wh...

Page 34: ...55611 2 1 01 k to 10 09 kΩ 100 kΩ 10 1 k to 100 9 kΩ 1 MΩ 0 101 M to 1 009 MΩ 10 MΩ 1 01 M to 10 09 MΩ 100 MΩ 10 1 M to 120 0 MΩ 100 MΩ 2 99 9 to 199 9 for 755601 When the limit mode is set to absolute R When the limit mode is set to absolute R the range is fixed to 1 Ω You cannot change this value Maximum displayed value 1 20000 755611 1 2000 755601 Measurement resolution 10 µ Ω 755611 100 µ Ω 75...

Page 35: ...onfirmed the new limit is displayed To exit from a menu in the middle of the operation press the EXIT R key The display returns to the top menu of the SETUP mode Switching to the SETUP mode 1 Press the SHIFT SETUP MEAS R key to switch to the SETUP mode If the MEAS LOCK indicator is off this operation is not necessary Changing the limit value HI and LO values 2 4 3 Numerical keys ENTER Ω LIMIT HI L...

Page 36: ...dicated in the above section Setting range of limit values HI and LO values Note Changing the percent limit initializes the limit values HI and LO to 0 If the percent limit is changed from 9 99 to 99 9 the reference value is rounded to the least significant digit However if the limit mode is 9 99 and the reference value is between 0 0001 Ω to 0 0004 Ω changing the limit mode to 99 9 changes the re...

Page 37: ... the top menu of the SETUP mode Switching to the SETUP mode 1 Press the SHIFT SETUP MEAS R key to switch to the SETUP mode If the MEAS LOCK indicator is off this operation is not necessary Changing the limit values 4 2 3 Numerical keys 5 Numerical keys 6 LIMIT ENTER Ω ENTER Ω HI LIMIT display LO LIMIT display If the value entered using the numerical keys is not correct an error 810 is displayed fo...

Page 38: ...this operation is not necessary Using the contact check 2 4 3 6 5 Numerical keys Contact check level CHECK ENTER SHIFT REF LIMIT M Ω Ω ENTER Ω ENTER Ω Main display If the value entered using the numerical keys is not correct an error 810 is displayed for approximately one second and the display returns to step 5 Explanation Contact check function If the result of the contact check is larger than t...

Page 39: ...o switch to the SETUP mode If the MEAS LOCK indicator is off this operation is not necessary Selecting the measurement time 2 3 SHIFT REF LIMIT ENTER Ω Main display MEAS TIME 7 Explanation Measurement time Select from the following choices Type Measurement Time when the measurement range is 1 Ω to 1 MΩ nor NORMAL 19 9 ms for 60 Hz 23 2 ms for 50 Hz FASt FAST 5 7 ms H SP HIGH SPEED 2 8 ms Measureme...

Page 40: ...ressed When confirmed the display returns to the top menu of the SETUP mode To exit from a menu in the middle of the operation press the EXIT R key The display returns to the top menu of the SETUP mode Switching to the SETUP mode 1 Press the SHIFT SETUP MEAS R key to switch to the SETUP mode If the MEAS LOCK indicator is off this operation is not necessary Selecting the trigger mode 2 4 3 EXTERNAL...

Page 41: ...he measurement mode 2 Trigger is activated every time the TRIG MODE TRIG key is pressed Explanation CAUTION Applying a voltage outside the 0 to 5 V range to the external trigger input terminal TRIGGER IN can damage the instrument External trigger input terminal TRIGGER IN Specifications Connector type BNC Input level CMOS Minimum pulse width 100 µ s Input circuit non isolated 10 kΩ 5 V 5 V 100 Ω C...

Page 42: ...solution 0 1 ms Selecting the trigger edge The selected edge takes effect only when the trigger mode is set to EXTERNAL Rise rising edge Trigger occurs at the rising edge of the signal Fall falling edge Trigger occurs at the falling edge of the signal Measurement interval for INTERNAL internal trigger When the trigger mode is set to INTERNAL the measurement interval is set to the following values ...

Page 43: ...value is displayed using seven segment digital characters You can not change the settings in the measurement mode The following keys can be used in the measurement mode SETUP MEAS SHIFT R key Used to switch between the measurement and SETUP modes TRIG key Pressing this key when the trigger mode is set to MANUAL activates a trigger R key Used to switch the display when the limit mode is set to devi...

Page 44: ...ing the key If you wish to do so first set the HOLD signal to H then change the mode using the key or a communication command Simply changing the HOLD signal from L to H does not change the mode The measurement continues in this case Note Use the SETUP mode to change the reference value and limit values Precautions to be taken when using the trigger input signal When activating the trigger with th...

Page 45: ...key to switch to the measurment mode If the MEAS LOCK indicator is off this operation is not necessary 2 Press the SETUP MEAS R key to set the displayed unit of the measured value to deviation display or Ω absolute display Explanation Switching between the deviation and absolute R displays You can switch the display during measurements in the measurement mode The display unit can be switched only ...

Page 46: ...ecessary Main display number of data sets to store 4 3 Numerical keys 2 SHIFT ENTER Ω STORE DATA 0 Storing data 1 Pressing the SHIFT STORE DATA 0 key in the measurement mode MEAS LOCK is ON causes the STORE DATA indicator to turn ON and the instrument to store one data set for every trigger After storing the specified number of data sets the store operation terminates and the STORE DATA indicator ...

Page 47: ...led when a trigger is activated using the input signal at the external trigger input terminal or the number 8 pin of the handler interface MANUAL Data are stored or recalled when the TRIG key is pressed or when a trigger is activated using a communication command INTERNAL Data are stored or recalled at measurement intervals according to the specified measurement time For details regarding the meas...

Page 48: ...onfirmed when the ENTER Ω key is pressed When confirmed the display returns to the top menu of the SETUP mode To exit from a menu in the middle of the operation press the EXIT R key The display returns to the top menu of the SETUP mode 1 Press the SHIFT SETUP MEAS R key to switch to the SETUP mode If the MEAS LOCK indicator is off this operation is not necessary 2 Store the measured data according...

Page 49: ...rument A bad connection can damage the instrument and or other devices that are connected to it Pin arrangement of the Centronics interface connector Pin No 1 2 9 10 11 12 13 14 15 16 17 18 Signal STROBE Strobe DATA0 Print data bit 0 DATA7 Print data bit 7 ACK Acknowledge BUSY Busy PE Paper end SLCT Select NC No connection NC No connection GND Ground GND Ground NC No connection Pin No 19 30 31 32 ...

Page 50: ...per size roll paper on which 40 characters can be printed horizontally and output the stored measurement data oFF A4 Print to an A4 size paper and do not output the stored measurement data on A4 Print to an A4 size paper and output the stored measurement data Start Stop printing Selecting on in the printing start stop menu starts the print operation Print is displayed while data transfer is in pro...

Page 51: ...6 6 IM 755601 01E Print example 6 2 Printing Data ...

Page 52: ...le of the operation press the EXIT R key The display returns to the top menu of the SETUP mode 1 Press the SHIFT SETUP MEAS R key to switch to the SETUP mode If the MEAS LOCK indicator is off this operation is not necessary 2 3 4 MISC SHIFT REF LIMIT k Ω ENTER Ω Main display Resetting the instrument to the factory default settings Turn ON the power switch on the rear panel while pressing the SHIFT...

Page 53: ...s of the mode it is currently in the trigger mode is set to EXTERNAL and makes measurements In addition all keys other than the R and STORE DATA keys are disabled key lock When the signal changes from L to H all keys are enabled Thus you can press the SETUP MEAS key to switch to the SETUP mode 4 When the contact check after measurement is enabled this signal is set to L when the contact check comp...

Page 54: ...n over range oL contact check error nC or when the test current is abnormal CF IN The signal is generated set to L when the comparator result of the measured value is IN LO The signal is generated set to L when the comparator result of the measured value is LO When the trigger mode is set to MANUAL or INTERNAL INDEX The signal is not generated stays at H EOM The signal is not generated stays at H ...

Page 55: ...n Arrangement Shape 1 PinNo 7 8 14 For details contact your nearest YOKOGAWA dealer Input Circuit Isolated 1 65 kΩ 12V EXT TRIG HOLD Output Circuit Isolated 12 V 12 V COM INDEX EOM NO CONTACT HI IN LO 7 1 Handler Interface Functions and Specifications ...

Page 56: ...nfirmed the display returns to the top menu of the SETUP mode To exit from a menu in the middle of the operation press the EXIT R key The display returns to the top menu of the SETUP mode 1 Press the SHIFT SETUP MEAS R key to switch to the SETUP mode If the MEAS LOCK indicator is off this operation is not necessary 4 5 2 3 Eom 6 MISC SHIFT REF LIMIT k Ω REF LIMIT ENTER Ω ENTER Ω Main display Main ...

Page 57: ...ck and other settings The timing chart when the trigger mode is set to EXTERNAL external trigger is shown below When the contact check is OFF EXT TRIG Example INDEX HI IN LO EOM Trigger delay Integral time When the contact check is ON before measurement Contact check period EXT TRIG Example INDEX HI IN LO EOM Trigger delay Integral time ...

Page 58: ...7 6 IM 755601 01E 7 3 Timing Chart When the contact check is ON after measurement Contact check period EXT TRIG Example INDEX HI IN LO EOM Trigger delay Integral time ...

Page 59: ... User can select whether to fix the CA and CB signals to TRUE or use the signal for flow control Software handshaking User can select whether to use the X ON and X OFF signals to control only the transmitted data or both transmitted and received data X ON ASCII 11H X OFF ASCII 13H Received buffer size 256 bytes Switching between Remote and Local Modes When switching from local to remote mode Recei...

Page 60: ...Input 3 SD Send Data Data transmitted to the PC Signal direction Output 5 SG Signal Ground Ground for signals 7 RS Request to Send Signal used for handshaking when receiving data from the PC Signal direction Output 8 CS Clear to Send Signal used for handshaking when transmitting data to the PC Signal direction Input Pins 1 4 6 and 9 are not used 9 25 Pin Connector and Signal Names 5 8 7 2 3 2 3 4 ...

Page 61: ...CA RTS 102 SG 103 104 106 105 SD RD CS RS Signal ground Transmitted data Request to send Received data Clear to send Connection Examples of Signal Lines The pin numbers shown are those of 9 pin connectors In general use a cross cable SD RD RS CS SG SD RD RS SG OFF OFF XON XON PC 755601 755611 SD RD RS CS SG SD RD RS SG XON RTS XON RS PC 755601 755611 SD RD RS CS SG SD RD RS SG CTS RTS CS RS PC 755...

Page 62: ...Send X ON when the received data buffer becomes 1 4th filled Set CA RTS to False when the received data buffer is 3 4th filled Set to True when the received data buffer becomes 1 4th filled Hardware handshaking Hardware handshaking Instrument s menu OFF OFF Data transmission control There is no handshaking between the instrument and the PC The X OFF and X ON signals are treated as data and the CS ...

Page 63: ...e free area of the receive buffer decreases to 64 bytes the instrument sets RS False When the free area increases to 192 bytes it sets RS True Precautions to be taken with respect to Data Reception Control When handshaking is used to control the data reception additional data may be received even when the free area drops below 64 bytes If the receive buffer becomes full all overflow data are disca...

Page 64: ...nization a start bit is added every time a character is transmitted The start bit is followed by the data bits parity bit and stop bit See the figure below Data bits 7 or 8 bits 1 character Stop bit 1 1 or 2 bits 2 Parity bit Even odd or none Start bit Circuit idle state Circuit back to idle state dotted line or the start bit of the next data solid line ...

Page 65: ...ified or selected are confirmed when the ENTER Ω key is pressed When confirmed the display returns to the top menu of the SETUP mode To exit from a menu in the middle of the operation press the EXIT R key The display returns to the top menu of the SETUP mode 1 Press the SHIFT SETUP MEAS R key to switch to the SETUP mode If the MEAS LOCK indicator is off this operation is not necessary 2 4 3 6 5 10...

Page 66: ...g list of choices Setting Handshaking Method HA 0 OFF OFF HA 1 XON XON HA 2 XON RS HA 3 CS RS Selecting the data format Select the combination of the data length parity and stop bit from the following list of choices Setting Data Length Parity Bit Stop Bit dF 0 8 None 1 dF 1 7 Odd 1 dF 2 7 Even 1 dF 3 7 None 2 Selecting the baud rate Select the baud rate from the following list of choices Setting ...

Page 67: ...nter or a listen only device Note Listen only and controller functions are not available on this instrument Switching between Remote and Local Modes When switching from local to remote mode Receiving a REN Remote Enable message from the controller when the instrument is in the local mode causes the instrument to switch to the remote mode The REMOTE indicator turns ON All keys other than the LOCAL ...

Page 68: ...t has been set to Local Lockout mode by the controller Interface Functions Functions Subset Name Description Source handshaking SH1 Full source handshaking capability Acceptor handshaking AH1 Full acceptor handshaking capability Talker T5 Basic talker capability serial polling untalk on MLA My Listen Address talk only capability Lister L4 Basic listener capability unlisten on MTA no listen only ca...

Page 69: ... no more than 15 devices including the controller can be connected to a single bus When connecting multiple devices each device must have its own unique address Use a cable of length 2 m or less for connecting the devices Make sure the total cable length does not exceed 20 m When communicating have at least two thirds of the devices turned ON When connecting multiple devices connect them in a star...

Page 70: ...e immediately terminated PPC Parallel Poll Configure and TCT Take Control are not supported Responses to a multi line message universal command LLO Local Lockout Disables the Local key on the front panel to prohibit switching to the local mode DCL Device Clear Same operation as the SDC message SPE Serial Poll Enable Sets the talker function on all devices on the bus to serial polling mode The cont...

Page 71: ...listener and talker designations The following five commands are available LLO Local Lockout DCL Device Clear PPU Parallel Poll Unconfigure SPE Serial Poll Enable SPD Serial Poll Disable In addition listener address talker address and secondary commands are also considered interface messages Interface Messages Uni line Messages Address command Universal command IFC REN IDY GTL SDC PPC GET TCT LLO ...

Page 72: ...ote mode Procedure The items that are specified or selected are confirmed when the ENTER Ω key is pressed When confirmed the display returns to the top menu of the SETUP mode To exit from a menu in the middle of the operation press the EXIT R key The display returns to the top menu of the SETUP mode 1 Press the SHIFT SETUP MEAS R key to switch to the SETUP mode If the MEAS LOCK indicator is off th...

Page 73: ...lowing range 0 to 30 Each device that is connected via GP IB has its own unique address This address is used for identification Therefore make sure to assign a unique address to the instrument when connecting to a PC Add or not add the header Select whether or not to add a header measurement information to the measured data that are transmitted The header includes the comparator result error infor...

Page 74: ...ress the SHIFT SETUP MEAS R key to switch to the SETUP mode If the MEAS LOCK indicator is off this operation is not necessary 2 Set the device that is to receive the measured data to listen only mode 3 5 4 7 6 9 8 Mode Add not add the header SHIFT REF LIMIT REF LIMIT REF LIMIT ENTER Ω ENTER Ω ENTER Ω Main display I F 3 10 Press the SHIFT SETUP MEAS R key to switch to the measurement mode The MEAS ...

Page 75: ...essage units each unit corresponds to one command The instrument executes the received commands in order Each program message unit is separated by a semicolon For details regarding the format of the program message unit see the next section Example Unit Unit CHECk MODE BEFore LEVel 5 PMT PMT PMT is a program message terminator The following three types of terminators are available NL New Line Same...

Page 76: ...gram messages into individual messages Precautions to be Taken When Transferring Messages If a program message that does not contain a query is sent the next program message can be sent at any time If a program message that does contain a query is sent a response message must be received before the next program message can be sent If the next program message is sent before the response message is ...

Page 77: ...roup is a group of commands that have the same compound header A command group may contain sub groups Example Group of commands related to the trigger TRIGger DELay TRIGger EDGE TRIGger MODE When Concatenating Commands of the Same Group The instrument stores the hierarchical level of the command that is currently being executed and performs analysis on the assumption that the next command sent wil...

Page 78: ...value at the end of a mnemonic is omitted it is interpreted as a 1 Example If FILTer x is written as FILT it means FILTer1 The section enclosed by braces can be omitted Example LIMit MODE can be written as LIM However the last section enclosed by braces cannot be omitted in a upper level query Example LIMit and LIMit MODE are different queries 10 1 3 Responses When the controller sends a message u...

Page 79: ... controller a specific form is defined for each query The same form is used regardless of the size of the value For the NR3 format the sign after the E can be omitted However the sign cannot be omitted If a value outside the setting range is entered the value will be changed to the closest value inside the range If a value has more significant digits than the available resolution the value is roun...

Page 80: ...or in the abbreviated form The COMMunicate HEADer setting does not affect the character data Boolean Boolean are data that indicate ON or OFF They are expressed in one of the following forms Form Example ON OFF NRf ON OFF 1 0 When Boolean is expressed in the NRf form OFF is selected if the rounded integer value is 0 and ON for all other cases A response message is always returned with a 1 if the v...

Page 81: ...g command from executing until the execution of the previously sent overlap command is completed the following commands are used WAI COMMunicate OVERlap OPC OPC The use of each command is described in the next section Using the WAI command CMD COMM OPSE H2000 1 CALL IBWRT M7556 CMD CMD PRIN EXEC WAI 2 CALL IBWRT M7556 CMD CMD MEAS ON 3 CALL IBWRT M7556 CMD 1 Make the completion of the external pri...

Page 82: ...Dition STATus FILTer x STATus EESE STATus EESR COMMunicate WAIT COMMunicate WAIT The use of each command is explained in the following example in which the measured data are stored or recalled using the external trigger mode Using the external event register CMD STOR COUN 200 1 CALL IBWRT M7556 CMD CMD STOR ON 2 CALL IBWRT M7556 CMD CMD STAT FILT10 FALL 3 CALL IBWRT M7556 CMD CMD STAT EESE 512 4 C...

Page 83: ...s the commands that are used for each function and presents examples showing their use Use this section as a reference when you are actually programming The program examples are written in Microsoft QuickBASIC with AT GPIB TNT IEEE488 2 board from National Instruments Resetting the Instrument Use one of the following commands PANel INITialize RST Example CMD RST CALL IBWRT M7556 CMD Switching betw...

Page 84: ...ALL IBWRT M7556 CMD Example 2 Check the current comparator settings CMD LIM OHM CALL IBWRT M7556 CMD A SPACE 50 CALL IBRD M7556 A PRINT A Setting the contact check Use the following command CHECk MODE CHECk LEVel Example Set the check level to 5 Ω and perform the contact check before the measurement CMD CHEC LEV 5 CALL IBWRT M7556 CMD CMD CHEC BEF CALL IBWRT M7556 CMD Switching the displayed unit ...

Page 85: ...o the measurement mode 9 Wait for the external trigger signal 10 Query the measured data 11 Clear the SRQ line 12 Read the extended event register in order to clear the register 13 Enable the SRQ interrupt once again Example 2 Set the trigger to manual trigger and trigger the measurement CMD STAT FILT1 RISE 1 CALL IBWRT M7556 CMD CMD STAT EESE 1 2 CALL IBWRT M7556 CMD CMD STAT EESR 3 CALL IBWRT M7...

Page 86: ...MD READ 4 CALL IBWRT M7556 CMD D SPACE 20 CALL IBRD M7556 D PRINT D GOTO LOOP1 1 Set the trigger mode to manual 2 Switch to the measurement mode 3 Generate the trigger 4 Query the measured data Note QuickBASIC may be interrupted when a GPIB SRQ signal occurs and possibly go to a user specified service routine To intercept SRQ signal interruptions and to make them available to user programs the NI ...

Page 87: ...displayed unit deviation or absolute R of the measured value or queries the current setting 10 18 HANDler Group HANDler Queries all settings related to the handler interface 10 18 HANDler EOM Sets the pulse width of the EOM signal or queries the current setting 10 18 HEADer Group HEADer Sets whether or not to attach a header measurement information to measured data or queries the 10 19 current set...

Page 88: ...lling dedicated command for RS 232 10 30 STORe Group STORe Queries all settings related to the storing of the measured data 10 30 STORe COUNt Sets the number of data points to store or queries the current setting 10 30 STORe POINts Queries the number of data points that are stored 10 31 STORe STATe Sets the measured data store state ON OFF or queries the current setting 10 31 TRIGger Group TRIGger...

Page 89: ...F When contact check is ON BEFore CHECK CHECK MODE BEFORE LEVEL 5 CHECk LEVel Function Sets the contact check level or queries the current setting Syntax CHECk LEVel Resistance MAX MIN CHECk LEVel Resistance 1 to 30 Ω Resolution 1 Ω MAX 30 Ω MIN 1 Ω Response NR1 form Example CHECK LEVEL 5OHM CHECK LEVEL CHECK LEVEL 5 CHECk MODE Function Turns ON OFF the contact check function and sets the check ti...

Page 90: ...OCKOUT ON COMMUNICATE LOCKOUT COMMUNICATE LOCKOUT 1 Description This is a dedicated command of the serial RS 232 interface COMMunicate Function Queries all settings related to communications Syntax COMMunicate Example COMMUNICATE COMMUNICATE HEADER 1 OPSE 8192 OVERLAP 8192 VERBOSE 1 COMMunicate HEADer Function Sets whether or not ON OFF to attach a header to the response data or queries the curren...

Page 91: ...on see page 10 7 Operation pending status enable register overlap enable register 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 0 0 PRN 0 0 0 0 0 0 0 0 0 0 0 0 0 When bit 13 PRN 1 External printer output operation incomplete COMMunicate REMote Function Switches to remote local mode or queries the current setting When the setting is set to ON it is set to the remote mode Syntax COMMunicate REMote Boolean C...

Page 92: ...rement display These commands can be used to make the same settings and inquiries as when the R key on the front panel is pressed DISPlay MODE Space PCNT OHM DISPlay Function Queries all settings related to the measurement display Syntax DISPlay Example DISPLAY DISPLAY MODE PCNT 10 2 5 HANDler Group The commands in the HANDler Group deal with the handler interface These commands can be used to mak...

Page 93: ...on Sets whether or not to attach a header measurement information to the measured data or queries the current setting Syntax HEADer Boolean HEADer Response 1 0 Example HEADER ON HEADER HEADER 1 Description The HEADer setting is reflected in the following responses and output content READ RECall DATA ASCii RECall DATA BINary Measured data output in the talk only mode When the header is attached the...

Page 94: ...T LIMIT MODE LIMIT MODE PCNT Description When the LIMit MODE setting is changed the following settings are also automatically changed as follows When changed from OHM to PCNT Display unit DISPlay MODE Deviation Limit values LIMit PCNT DATA HI 0 LO 0 Ref val LIMit PCNT REFerence 100 00 kΩ When changed from PCNT to OHM Display unit DISPlay MODE Absolute R Limit values LIMit OHM DATA HI 0 Ω LO 0 Ω LI...

Page 95: ...limit when the limit mode is set to deviation or queries the current setting Syntax LIMit PCNT PLIMit NRf LIMit PCNT PLIMit NRf 9 99 or 99 9 Response 9 99 99 90 NR2 form Example LIMIT PCNT PLIMit 9 99 LIMIT PCNT PLIMIT LIMIT PCNT PLIMIT 9 99 Description When the LIMit PCNT PLIMit is changed the following settings are also automatically changed When the percent limit is changed from 9 99 to 99 9 Li...

Page 96: ... commands provided by the instrument only the SETUP commands belonging to the groups indicated below can be executed while the measurement is in progress measurement mode Attempting to execute the other commands will result in an error 800 Query commands can be executed in either measurement mode or SETUP mode except for some commands in the RECall Group COMMunicate Group DISPlay Group MEASure Gro...

Page 97: ...ialize MTIMe Function Sets the type of measurement time or queries the current setting Syntax MTIMe NORMal FAST HSPeed MTIMe Response NORMal FAST HSPeed Example MTIME NORMAL MTIME MTIME NORMAL Description For the measurement time and interval corresponding to the specified type of measurement time when the trigger mode is set to internal see page 4 9 PANel INITialize Function Initializes settings ...

Page 98: ... characters can be printed horizontally OFF_A4 Prints the statistics to an A4 size paper Measured data are not printed ON_A4 Prints the statistics as well as the measured data to an A4 size paper Response OFF_A4 ON_A4 OFF_RP ON_RP Example PRINT FORMAT OFF_A4 PRINT FORMAT PRINT FORMAT OFF_A4 PRINt STATe Function Queries the printer output condition Syntax PRINt STATe Response BUSY IDLE BUSY Printer...

Page 99: ...mparator result HI 10 6135 MΩ When there are no data READ 0 9 91E 37 When the value is over the range READ 21 9 9E 37 When a contact check error occurs READ 37 9 9E 37 When abnormalities are detected in the test current READ 69 9 9E 37 Description The instrument stores the measured results to the measurement data buffer every time a measurement completes READ is a query used to inquire about the c...

Page 100: ...ormation and Measured data of the S th data set Set 2 Measurement information and Measured data of the S 1 th data set Set N Measurement information and Measured data of the S N 1 th data set The contents of Set N are all in the Measurement information Measured data form This is the same form as the response of the READ command If the measurement information is OFF Measurement information and are ...

Page 101: ...r contents and the data set sequence are the same as the RECall DATA ASCii command This query cannot be made in the measurement mode Doing so will result in an error 800 RECall RESult Function Queries the statistics related to the measured data that are stored Syntax RECall RESult LIMit COUNt STATistics Parameters can be omitted LIMit Outputs the limit values that existed when data were stored COU...

Page 102: ...curs after the instrument is switched to the measurement mode using the MEASure ON command When the last data point is recalled the RECall STATe is automatically turned OFF Executing the RECall STATe OFF command will forcibly terminate the recall operation When there are no measured data stored in the memory RECall STATe cannot be turned ON This will result in an error 830 If the STORe STATe is tu...

Page 103: ...1 RISE FILTER12 RISE FILTER13 NEVER FILTER14 RISE FILTER15 NEVER FILTER16 NEVER QENABLE 0 QMESSAGE 1 STATus CONDition Function Queries the status register Syntax STATus CONDition Response NR1 Status register see page 10 45 Example STATUS CONDITION 0 STATus EESE Extended Event Status Enable register Function Sets the extended event enable register or queries the current setting Syntax STATus EESE R...

Page 104: ...ENable Response 0 1 Example STATUS QENABLE ON STATUS QENABLE STATUS QENABLE 1 STATus QMESsage Function Sets whether or not to attach message information to the response to the STATus ERRor query or queries the current setting Syntax STATus QMESsage Boolean STATus QMESsage Response 0 1 Example STATUS QMESSAGE ON STATUS QMESSAGE STATUS QMESSAGE 1 STATus SPOLl Serial Poll Function Executes serial pol...

Page 105: ... ON command sets the instrument in a store start ready state The actual store operation is not executed at this point Measured data are stored into the memory every time a trigger occurs after the instrument is switched to the measurement mode using the MEASure ON command When the number of data points specified by the STORe COUNt command is stored the STORe STATe is automatically turned OFF Execu...

Page 106: ...elay or queries the current setting Syntax TRIGger DELay Time MAX MIN TRIGger DELay Time 0 to 1s Resolution 0 1 ms MAX 1s MIN 0s Response NR2 form Example TRIGGER DELAY 0S TRIGGER DELAY TRIGGER DELAY 0 0000 Description The trigger delay is valid only when the trigger mode is set to external trigger or manual trigger TRIGger EDGE Function Sets the trigger edge or queries the current setting Syntax ...

Page 107: ...inator the output queue is also cleared For details regarding registers and queues see section 10 3 ESE standard Event Status Enable register Function Sets the standard event enable register or queries the current setting Syntax ESE NRf ESE NRf 0 to 255 Example ESE 251 ESE 251 Description NRf is the sum of the bits expressed as a decimal number In the above example the standard event enable regist...

Page 108: ...see page 10 7 An overlap command is specified using the COMMunicate OPSE command Proper operation is not guaranteed unless the OPC command is placed at the end of the message OPC OPeration Complete Function Returns the ASCII code 1 upon the completion of the specified overlap command Syntax OPC Example OPC 1 Description For the procedures regarding the use of the OPC command for synchronization se...

Page 109: ...ther words the error queue is not empty an error occurred A STB query will not clear the status byte register For details regarding the status byte register see page 10 37 TRG TRiGger Function Executes a manual trigger and makes one measurement Syntax TRG Example TRG Description This command is valid only when the TRIGger MODE is set to MANual The interface message GET Group Execute Trigger also a...

Page 110: ...8 7 6 5 4 3 2 1 0 Extended event enable register 7 6 5 4 3 2 1 0 Standard event register 7 6 5 4 3 2 1 0 Standard event enable register OR OR 7 6 ESBMAVEES EAV 1 0 Status byte register MSS RQS Output queue Error queue Service request occurrence 7 6 5 4 3 2 1 0 Service request enable register OR Status Report The figure shows the status report that is read by serial polling This status report is an...

Page 111: ...its in the standard event enable register are 1 s or 0 s For details regarding these commands see section 10 2 10 3 2 Status Byte Status byte 7 6 ESBMAVEES EAV 1 0 RQS MSS Bits 0 1 and 7 Not used always 0 Bit 2 EAV Error Available Set to 1 when the error queue is not empty In other words this bit is set to 1 when an error occurs See page 10 40 Bit 3 EES Extend Event Summary Bit Set to 1 when the l...

Page 112: ...Since the CLS command does not clear the output queue bit 4 MAV of the status byte is unaffected However if the CLS command is received immediately after the program message terminator the output queue is also cleared 10 3 3 Standard event register Standard event register URQ 6 PON 7 5 4 3 2 1 0 CMEEXE DDEQYERQCOPC Bit 7 PON Power ON Set to 1 when the instrument is turned ON Bit 6 URQ User Request...

Page 113: ...egister 1 6 7 5 4 3 8 9 10 11 12 13 2 6 7 5 4 3 2 1 8 9 10 11 12 13 14 15 16 STATus FILTer x RISE FALL BOTH NEVer STATus EESR FILTer x The meaning of each bit of the status register that indicates the internal condition of the instrument is as follows Bit 0 DAV Data Available Set to 1 when there are data stored in the measurement data buffer Bit 1 IN Set to 1 when the comparator result is IN Bit 2...

Page 114: ...queue Bit 4 MAV of the status byte can be used to check whether or not the output queue is empty D1 D2 D1 D2 D1 Error Queue The error queue stores the error number and message when an error occurs For example if the controller sends an incorrect program message the error number 113 and the message Undefined header are stored in the error queue when the error is displayed The STATus ERRor query can...

Page 115: ...71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 1...

Page 116: ...at return multiple response messages See the example of the commands given in section 10 2 c Queries that create response data when the command syntax is being analyzed All queries create response data when the command syntax is analyzed d Queries that create response data during reception There are no queries of which the response data are created upon receiving a send request from the controller...

Page 117: ... The size of the storage area for protected user data for PUD and PUD commands PUD and PUD are not supported 18 The length of the RDT and RDT resource names RDT and RDT are not supported 19 The change in the status due to RST LRN RCL and SAV RST LRN See section 10 2 18 Common Command Group RCL SAV These common commands are not supported 20 The extent of the self test using the TST command The self...

Page 118: ...e a possibility that noise is affecting the measurement Are the ambient temperature and humidity within the allowed 3 2 range as stated in the specifications Cannot make measurements Is the instrument in the measurement mode 4 2 Keys do not operate Is the REMOTE indicator turned OFF 9 1 Is the instrument in the SETUP mode 4 2 5 1 Is the HOLD signal of the handler interface inactive 5 1 7 1 The ins...

Page 119: ... for the NRf form 10 5 123 Exponent too large The absolute value of the exponent in the 10 5 Section 10 2 NR3 form must be less than or equal to 32000 124 Too many digits The number of digits of the mantissa in the 10 5 Section 10 2 NRf form must be less than or equal to 255 excluding the preceding 0 128 Numeric data not allowed Write in a data form other than the NRf 10 5 Section 10 2 form 131 In...

Page 120: ...imit mode Limit values cannot be set in Ω when the 4 5 limit mode is set to 813 Cannot set this parameter in OHM limit mode Limit values and reference value cannot be 4 7 set when the limit mode is set to R 814 Cannot set PCNT display mode in OHM limit mode To change the measurement display to 4 2 4 3 5 2 set the limit mode to and set the reference value 815 Lower limit value is larger than upper ...

Page 121: ...s ERRor query cannot be used to inquire error codes and error messages Error in System Operation Communications 912 Code Message Probable Cause Corrective Action Page 912 Fatal error in Communication driver Servicing is required Warning Communications 5 Code Message Probable Cause Corrective Action Page 5 OPC Exists in message Place the OPC or OPC command at the end of the program message Miscella...

Page 122: ...8 9 LO LIMIT IN LO MΩ M Ω k Ω Ω kΩ Ω Ω HIGH SPEED STORE DATA RECALL DATA CHECK REMOTE Procedure The items that are specified or selected are confirmed when the ENTER Ω key is pressed To exit from a menu in the middle of the operation press the EXIT R key Switching to the SETUP mode 1 Press the SHIFT SETUP MEAS R key to switch to the SETUP mode If the MEAS LOCK indicator is off this operation is no...

Page 123: ...key to the Ω key excluding the R key appears on the seven segment display the key is operating correctly Indicator test Tests whether or not the seven segment characters on the screen and other indicators are operating correctly If all the LEDs turn ON at once then each one in order the test is indicates proper operation ROM version check The Software ROM version used by the instrument can be chec...

Page 124: ... 10 MΩ 50 ppm 100 MΩ 100 ppm Recommended instrument 4808 Fluke 2792 YOKOGAWA Environment and Conditions while making the adjustment Ambient temperature 23 1 C Relative humidity 45 to 75 RH Supply voltage 100 V 5 Frequency 50 60 Hz 1 Hz Warm up At least 2 hours for the standard resistor and 60 minutes for this instrument before making the adjustment Precautions while making adjustments Connect the ...

Page 125: ...ssfully 1 00000 Ω 755611 2 blinks on the main display If the zero measurement fails an error is displayed and the routine returns to step 3 5 Connect a standard resistor of the nominal value that is displayed on the main display to the instrument 6 Enter the resistance of the standard resistor using 5 5 digits and press the ENTER key On the 755601 entering the 5 5th digit will cause the left most ...

Page 126: ...tment terminates Reboot the instrument Canceling the range adjustment 5 Press the EXIT R key when the adjustment range is blinking on the main display The adjustment is aborted and AdJ is displayed In this case the adjusted values are not updated 1 0 0000 Ω blinks for the 755601 2 1 0000 Ω blinks for the 755601 Explanation Change in the value entry While entering values the REF and LIMIT keys beco...

Page 127: ...d CALibrate ADJust FULL Function Executes the full scale measurement for the current range and determines the new gain adjustment value At the same time queries the value that is measured using the new adjusted value Syntax CALibrate ADJust FULL Resistance Resistance Resistance of the standard resistor 0 00000 Ω to 120 000 MΩ The setting resolution is 1 10 of the display resolution Response NR3 fo...

Page 128: ...nse 1 0 Example CALIBRATE ADJUST STATE ON CALIBRATE ADJUST STATE CALIBRATE ADJUST STATE 1 Description The OFF 0 setting is equivalent to executing the CALibrate ADJust CANCel command CALibrate ADJust WRITe Function Writes the adjusted values to the EEPROM and terminates range adjustment Syntax CALibrate ADJust WRITe Example CALIBRATE ADJUST WRITE Description This command cannot be executed unless ...

Page 129: ...tage 250 V Maximum rated current 315 mA 100 120 V 160 mA 220 240 V Type Time lag Standard VDE SEMKO UL CSA SEV certified Part number A1345EF 100 120 V A1342EF 220 240 V Replacement Procedures Follow the procedures below to replace the power fuse 1 Turn OFF the power switch 2 Unplug the power cord from the power outlet 3 Press the fuse holder section to the right of the power connector with a Phili...

Page 130: ... to 19 999 1 001 kΩ to 10 009 kΩ 10 kΩ for 755611 1 10 01 kΩ to 100 09 kΩ 100 kΩ 0 1001 MΩ to 1 0009 MΩ 1 MΩ 1 001 MΩ to 10 009 MΩ 10 MΩ 10 01 MΩ to 120 00 MΩ 100 MΩ 1 99 99 to 19 99 for 755601 Percent limit PLmt is 99 9 Range of Reference Values Applied Used Range Display Range 0 001 Ω to 1 009 Ω 10 Ω 1 01 Ω to 10 09 Ω 100 Ω 10 1 Ω to 100 9 Ω 1 kΩ 99 99 0 101 kΩ to 1 009 kΩ 10 kΩ to 199 99 1 01 k...

Page 131: ...0 100 MΩ 0 2 20 Accuracy at 1 Ω range measuring 0 1 Ω or less of reading Ω is as follows 90 days after adjustment NORMAL 0 012 0 0001 FAST 0 012 0 0002 HIGH SPEED 0 012 0 0003 One year after adjustment NORMAL 0 015 0 0001 FAST 0 015 0 0002 HIGH SPEED 0 015 0 0003 Accuracy under the following conditions 9 99 mode 10 times the digit error of the accuracy shown above for 99 9 mode 23 5 C Add a temper...

Page 132: ...o Sampling Only when the trigger mode is set to INTERNAL Measurement Interval NORMAL 50 ms FAST 20 ms HIGH SPEED 10 ms Add 5 ms when the contact check is ON Add 5 ms when the measurement range is 10 MΩ Add 50 ms when the measurement range is 100 MΩ 12 3 Measurement Time Specifications Mode Power Frequency Measurement Time NORMAL 60 Hz 19 9 ms 50 Hz 23 2 ms FAST 5 7 ms HIGH SPEED 2 8 ms Automatical...

Page 133: ...of the measurement result EOM Output once when the measurement completes regardless of the measurement result NO CONTACT Output when the measurement result is a contact check error nC or when abnormalities are detected in the test current CF HI Output when the comparator result of the measured value is HI Output also when the measurement result is an overrange oL contact check error nC or when abn...

Page 134: ...ut Key lock 2 11 INDEX L Output H when trigger is input L when data collection is completed L 3 14 COM Common 1 Select the pulse width from 0 1 5 10 15 ms The default setting is 10 ms 2 When active L the instrument switches to the measurement mode trigger mode is set to EXTERNAL regardless of the current mode measurement SETUP and makes measurements All keys except the R and STORE DATA keys are di...

Page 135: ...H1 T5 L4 SR1 RL1 PP0 DC1 DT1 C0 E1 Protocol Conforms to IEEE St d 488 2 1992 Code ISO ASCII code Mode Addressable mode Talk only mode Address Select talker listener addresses in the range 0 to 30 Remote mode clear Remote mode can be cleared by pressing the LOCAL key except when the instrument has been set to Local Lockout mode by the controller Header Select ON OFF Centronics Interface Option Item...

Page 136: ...vervoltage Category II Applies to equipment supplied with electricity from fixed installations like a distribution board 2 Pollution Degree Applies to the degree of adhesion of a solid liquid or gas which deteriorates withstand voltage or surface resistivity Pollution Degree 1 Applies to closed atmospheres with no or only dry non conductive pollution Pollution Degree 2 Applies to normal indoor atm...

Page 137: ...12 8 IM 755601 01E 12 10 External Dimensions 356 Rear View 23 73 250 213 88 19 179 Unit mm Unless specified otherwise the tolerance is 3 However in cases of less than 10 mm the tolerance is 0 3 mm ...

Page 138: ... 10 4 absolute R mode 4 1 address 9 7 addressable mode 9 7 adjustment 11 7 11 10 B bar display 2 4 baud rate 8 1 8 8 block data 10 6 block diagram 1 1 boolean 10 6 C character data 10 6 check level 4 7 check time 12 4 comparator function 1 2 4 5 contact check 10 15 contact check function 1 2 4 7 D data 10 5 data format 8 8 DCL 9 4 deadlock 10 2 deviation mode 4 1 digital numbers and characters 1 4...

Page 139: ...nge 4 3 12 1 range adjustment 11 9 11 10 recall 6 2 10 26 reference display 2 1 reference value 4 2 register 10 6 remote 8 1 REMOTE indicator 8 1 REN 9 4 response data 10 2 response header 10 2 response message 10 2 ROM version 11 6 S SDC 9 4 self test 10 28 10 35 11 5 sequential command 10 7 serial polling 9 4 SETUP mode 1 3 4 1 10 22 SPE 9 4 standard event enable register 10 33 standard event re...

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