ADCMT 7451A, Operation Manual

Page 1: ...NUMBER C Printed in Japan ADC CORPORATION All rights reserved 7451A 61A 61P Digital Multimeter Operation Manual FOE 00000061B00 First printing January 20 2011 Applicable Models 7451A 7461A 7461P 2011...

Page 2: ......

Page 3: ...he EMC Directive 2004 108 EC in accordance with EN61326 1 and Low Voltage Directive 2006 95 EC in accordance with EN61010 ADC Corp ROHDE SCHWARZ Japan Europe GmbH Munich Germany instrument type design...

Page 4: ......

Page 5: ...s 3 8 3 4 1 Checking the Power Supply Voltage 3 8 3 4 2 Changing the Power Supply Voltage 3 9 3 4 3 Connecting the Power Cable 3 11 4 QUICK START 4 1 4 1 Panel Description 4 1 4 1 1 Front Panel Descri...

Page 6: ...8 3 Trigger Delay Td 5 23 5 8 4 Trigger Count Setting 5 24 5 8 5 Level Trigger and Delta Trigger 5 24 5 8 5 1 Level Trigger 5 25 5 8 5 2 Delta Trigger 5 26 5 8 5 3 Pre Trigger Operation 5 28 5 9 Calcu...

Page 7: ...1 Compatibility 6 15 6 7 2 Output Data Format 6 16 6 7 3 ADC Command Reference 6 22 6 7 4 SCPI Command Reference 6 35 6 7 4 1 SCPI Command Reference Syntax 6 35 6 7 4 2 Remote Command 6 37 6 7 5 Stat...

Page 8: ...4 8 3 3 Calibration Point 8 5 8 3 4 Calibration Procedure 8 8 8 4 Replacing Parts with Limited Life 8 11 8 5 Product Disposal and Recycle 8 12 8 6 Storage 8 14 8 7 Transportation 8 14 8 8 Notes Regard...

Page 9: ...7 Resistance Measurement 2W 4W LP 2W and LP 4W 4 10 4 8 DC Current Measurement DCI 4 11 4 9 AC Current Measurement ACI and ACI AC DC 4 13 4 10 Continuity Measurement 4 14 4 11 Diode Measurement 4 15 4...

Page 10: ......

Page 11: ...play Resolution 4 17 4 16 Sampling Rate Measurement Speed and Auto Zero 4 19 4 17 Sampling Rate and Display Digits 4 20 5 1 Menu Operation Key and Function 5 3 5 2 Measurement Function and Range Struc...

Page 12: ...st of Tables No Title Page 8 1 Fuse Rating and Compliant Standard 8 1 8 2 Calibration Point 7461A 61P 8 5 8 3 Calibration Point 7451A 8 6 8 4 Parts with Limited Life 8 11 8 5 Disposal 8 12 8 6 Initial...

Page 13: ...s chapter before using this instrument Chapter 3 SETUP This chapter describes how to setup this instru ment After setting up this instrument in an appro priate location turn on the power and check tha...

Page 14: ...ment function with a resolution of 0 001 C using a platinum resistance bulb Pt100 or JPt100 7461P only Digital output function that is capable of controlling TTL signals and contact signals by remote...

Page 15: ...s instrument is protected from overcurrent by a power fuse The power fuse which is located on the rear panel cuts the power supply if an overcurrent flows If the power fuse was blown remove the power...

Page 16: ...7451A 7461A 7461P Digital Multimeter Operation Manual 2 5 Note When Turning on the Power 2 2 2 5 Note When Turning on the Power When turning on the power do not connect any DUTs...

Page 17: ...er or the cushioning material is damaged keep them until the following inspections are complete 2 Check that the outside of the product is not damaged WARNING If any outside components of the product...

Page 18: ...ck CC015001 Each 1 Power Fuse For 100V 120V DFT AAR25A 1 1 2 T250mA 250V Power Fuse For 220V 240V DFT AAR16A 1 T160mA 250V Overcurrent protection fuse DFS AN3R15A 1 1 F3 15A250V Operation manual E7451...

Page 19: ...rea free from corrosive gas An area away from direct sunlight A dust free area An area free from vibrations A low noise area Although this instrument has been designed to withstand a certain amount of...

Page 20: ...2 Electrostatic Countermeasures for the Work Floor and Human Body Figure 3 3 Electrostatic Countermeasures for the Workbench Table 3 2 ESD Countermeasures Human Body Use a wrist strap See Figure 3 2 W...

Page 21: ...ss WARNING Must not touch the metal part of the input cable to prevent any damage of electrical shock Table 3 3 Accessories Name Model Remarks Input cable CC010001 Standard Accessory A01001 Shielded c...

Page 22: ...which the HI side is shielded The red wire of A01001 is shielded Do not cut the joint The rating of the probe decreases to 33 VAC and 70 VDC when the alligator clip adapter is attached 3 Use the dedi...

Page 23: ...strument or controller 3 Use shielded cables which are connected between peripherals Setting up the USB port To use the USB interface of this instrument the USB driver of our ADC instrument must be in...

Page 24: ...power supply voltage to be used Figure 3 4 Indication of the Set Power Supply Voltage Table 3 4 Relation Table between AC Power Supply Voltage and Indication of Set Power Supply Voltage AC power suppl...

Page 25: ...the fuse holder assembly by using flathead screwdrivers and then pull it out 2 Remove the power supply voltage selector from the fuse holder assembly 3 Rotate the power supply selector to be looked th...

Page 26: ...461P Digital Multimeter Operation Manual 3 4 2 Changing the Power Supply Voltage 3 10 5 Replace the fuse holder assembly into the rear panel 6 Check that the correct power supply voltage is indicated...

Page 27: ...al shock 2 Connect the AC power connector on the rear panel of this instrument to a three pin power outlet that has a ground terminal by using the included power cable See Figure 3 5 Figure 3 5 Connec...

Page 28: ......

Page 29: ...rations which do not use MENU Other settings are set in the layered menus For more information on function descriptions and how to navigate the menus refer to Chapter 5 4 1 Panel Description 4 1 1 Fro...

Page 30: ...t Either 2W or 4W can be selected alternately 4 DCI Selects the DC current measurement DCI 5 ACI Selects the AC current measurement ACI The AC filter can be selected from FAST MED and SLOW 6 FREQ Sele...

Page 31: ...nt range between auto range and fixed range 2 DOWN Decreases the measurement range by one level and fixes the range 3 UP Increases the measurement range by one level and fixes the range 4 1 1 5 Sampli...

Page 32: ...nal used for the 4W or temperature measure ment 2 COM terminal LO terminal used for the DC voltage AC voltage DC current AC current resistance diode and frequency measurements Source LO terminal used...

Page 33: ...tor Connector for USB Used to output data and control remotely 4 GPIB connector Connector for GPIB Used to output data and control remotely 5 Rear input section Used to connect the input cable The cur...

Page 34: ...and exit from here For more information on navigating the menus refer to Section 5 1 Menu This instrument saves the set conditions when the power is turned off The factory defaults are used in the de...

Page 35: ...tage Measurement DCV Bch Table 4 3 Maximum Allowable Applied Voltage DCV Bch Input terminal Measurement voltage range Maximum allowable applied voltage Between Bch Hi and COM 12 V 200 Vpeak Between Bc...

Page 36: ...he AC filter In this instrument the AC filter can be selected from three for the accuracy optimization in low fre quency and the high speed response Select the AC filter in consideration of the measur...

Page 37: ...t is reduced 3 Press and to return to the 2W and 4W measurement 4 Press The 2W and 4W are switched alternately NOTE In the following measurement ranges the LO terminal of 4W SENSE does not recognize t...

Page 38: ...W and LP 4W Table 4 8 Maximum Allowable Applied Voltage 2W 4W LP 2W LP 4W Between and COM 1000 Vpeak 1 Between 4W HI and LO 200 Vpeak Between 4W HI LO and COM 200 Vpeak Between COM and chassis 500 V 1...

Page 39: ...current source whose potential is more than 250 V This instrument may be damaged and injury accidents may be caused The mA terminal is protected from the applied overcurrent by using the fast blow fus...

Page 40: ...re quency and the high speed response Select the AC filter in consideration of the measurement signal frequency necessary measurement accuracy and response time Maximum allowable applied current 3 A W...

Page 41: ...t Functions 4 13 Figure 4 9 AC Current Measurement ACI and ACI AC DC Table 4 10 Measurement Range 7461A 61P 7451A Measurement method TrueRMS Measurement range 5 or more of the range Crest factor 1 5 3...

Page 42: ...ounds Figure 4 10 Continuity Measurement Table 4 11 Continuity Measurement 7461A 61P 7451A Measurement range 1000 3000 Measurement current 1 mA 1 mA Continuity threshold constant 1 to 1000 Maximum all...

Page 43: ...to the diode Figure 4 11 Diode Measurement Table 4 12 Diode Measurement 7461A 61P 7451A Measurement range 1000 mV 3000 mV Measurement current 1 mA 1 mA Maximum allowable applied voltage Between and CO...

Page 44: ...Frequency Measurement FREQ Use a suitable measurement range for the input voltage If the input voltage exceeds the measurement range the measurement is performed but the accuracy of the measured value...

Page 45: ...ing on the sampling rate Pressing switches the sampling rate in turn Select the sampling rate according to the necessary resolution Table 4 14 Temperature Measurement Resistance bulb Pt100 JPt100 Meas...

Page 46: ...1A 7461A 7461P Digital Multimeter Operation Manual 4 2 1 Measurement Functions 4 18 Figure 4 13 Temperature Measurement Is Current a 2W measurement b 3W measurement c 4W measurement Is Current Is Curr...

Page 47: ...tions Table 4 16 Sampling Rate Measurement Speed and Auto Zero Sampling rate FMS indicator Measurement speed In Auto range OFF Integration time Auto zero DCV Bch DCV DCI 2W LP 2W 4W LP 4W ACV ACI Cont...

Page 48: ...tarts the measurement when the sampling mode is set to HOLD Table 4 17 Sampling Rate and Display Digits Function DCV DCI DCV Bch 2W 4W LP 2W 4W ACV ACI Diode Continuity ACV AC DC ACI AC DC Sampling ra...

Page 49: ...he category Third layer Entry Execution layer Used to enter the values or select the setting Figure 5 1 Menu Operation Measured value display Category layer Note Italic Entry item Under line Cursor bl...

Page 50: ...it by pressing Setting the numerical parameters For the numerical parameter that is set by entering the numerical value select either numerical digit decimal point position or unit prefix by using an...

Page 51: ...eft parameter Moves the target item to the numerical value Moves the target item to the left Displays the previous selection Moves the target item to the right category Moves the target item to the ri...

Page 52: ...time is outside this range it is set in seconds Although the setting range is the same in IT SEC the value is con verted into the unit of PLC BchDC DC voltage measurement selection DCV Bch H COM HI L...

Page 53: ...999 For 7461A 61P 0 to 319999 For 7451A SLOPE Slope For the trigger source is set to only DELTA POSI BOTH NEGA PATRN Pattern For the trigger source is set to only DELTA EMISS CONV P Trig Pre trigger F...

Page 54: ...9 For 7461A 61P 999 999E 9 to 999 999E 9 For 7451A Val_C Constant C SCL 9999 999E 9 to 9999 999E 9 For 7461A 61P 999 999E 9 to 999 999E 9 For 7451A ValDB Constant D dB dBm 0 000001E 9 to 9999 999E 9...

Page 55: ...he Continue setting OFF ON Only when SCPI is selected as the command language 1 Applied to software revision B00 and later 9 SYS BEEP Buzzer setting OFF ON TEST Self Test P KEY Display and key tests T...

Page 56: ...eter Operation Manual 5 1 2 Menu List 5 8 10 TEMP WIRE Measurement wire connection 2W 3W 4W TYPE Platinum resistance bulb selection PT JPT UNIT Temperature unit C F K d Category layer Selection layer...

Page 57: ...is high 5 2 2 DC Voltage Measurement DCV Bch Selecting the measurement terminal The measurement terminal can be selected as shown in below from BchDC in category in HI COM Displays the voltage betwee...

Page 58: ...tion The measurement wire connection can be selected from WIRE in category in 2W 2 wire connection 3W 3 wire connection 4W 4 wire connection Press to determine the setting Selecting the platinum resis...

Page 59: ...000 A 100 mV 1000 mV 1000 mV 1000 1000 10 mA 10 mA 1000 mV 1000 1000 mV 10 V 10 V 10 V 10 k 10 k 100 mA 100 mA 10 V 100 V 100 V 100 k 100 k 1000 mA 1000 mA 100 V 1000 V 700 V 1000 k 1000 k 3 A 3 A 700...

Page 60: ...et to 1 msec or less The trigger source is set to the level trigger or delta trigger NOTE Before using Auto range If this instrument is used while Auto range is set to ON some measurements cannot be p...

Page 61: ...power is turned on The setting is changed to a function in which Auto zero is performed If the high speed or high throughput measurement is required Auto zero can be performed only once accord ing to...

Page 62: ...te 5 5 Display Mode Setting Setting the display mode Select either ON or OFF in M DISP in in Press to apply the setting A time of approximately 1 ms is required for the output to be displayed The time...

Page 63: ...ry Figure 5 2 Measurement Sequence When sampling over a precise interval or sampling at high speeds below 1 ms use this instrument under the following conditions Function DCV DCI 2W LP2W DCV Bch Bch H...

Page 64: ...ution of the integration time When setting the integration time in PLC unit the integration time outside the range shown in the table can be set However the setting is converted to the units of second...

Page 65: ...imal point or unit prefix by using and and change it by using and Press to apply the setting If the value that is less than the resolution is entered the setting value is rounded to the resolution If...

Page 66: ...ore than once Enter the number of sampling in N Smpl in in Sampling count 1 to 16000 samples trigger NOTE When data is stored in the measurement data memory in conjunction with this setting on the 746...

Page 67: ...COUNt Terminate COMPLETE output When TRIGger COMPlete SINGle Device action Measurement Calculation Memory store SAMPle COUNt Terminate COMPLETE output When TRIGger COMPlete MULTi Yes 1 2 Yes 1 SOURce...

Page 68: ...e by using either of the following trigger system com mands Starting the trigger system INITiate Setting CONTinuous to ON INITiate CONTinuous ON If CONTinuous is set to ON when the measurement is comp...

Page 69: ...etects an event when the difference between delta 1 and delta 2 refer to Fig ure 5 5 exceeds the set threshold value Select SLOPE from the positive POSI absolute BOTH and negative NEGA polarities Set...

Page 70: ...ment starts when TRG command is received 4 TRIGger Source EXTernal The same as TRIGger Source MANual However the measurement starts when the external trigger signal is input Complete signal output Mul...

Page 71: ...tion Software revision B00 and later 600 1 m to 6 s 100 s 6001 m to 60 s 1 ms 61 s to 3600 s 1 s 1 s 1 s 1 If a value that is less than the resolution is set by using the panel or a remote command the...

Page 72: ...1P up to 16000 3 Set the parameter for detecting a trigger level LEVEL SLOPE DELTA PATRN 4 The measurement in the set sampling interval starts when the key is pressed or TRG command is received The sa...

Page 73: ...he display count up to the maximum number of display digits in the fixed measurement range Set the LEVEL value according to the following displayed number even if the displayed number becomes smaller...

Page 74: ...on level is set in DELTA The direction of the change is selected by setting PATRN Select one of the following in PATRN in in EMISS The trigger is detected when the width of the change becomes larger t...

Page 75: ...e trigger is detected when the polarity of change and direction of change judgment conditions are satis fied refer to Table 5 8 Figure 5 6 Delta Trigger Table 5 8 Delta Trigger Detection Pattern PATRN...

Page 76: ...Level Delta selection Level Delta detection First trigger Measurement end Valid data Invalid data Empty data Because the data memory operates as a ring memory when the level or delta trigger is used t...

Page 77: ...5 IRD 250 749 OK In pre trigger 75 IRD 250 749 NG Reads out data IRO Outputs the data in the range set by IRD command If this command is executed before the trigger is detected an error occurs Item Fu...

Page 78: ...wed However the buzzer may sound even when the display and remote output data are not changed 2 If the calculation is set to ON the display of the calculation result is different from the ordinary mea...

Page 79: ...tant The measurement value when the key is pressed is determined as the NULL constant The NULL calculation cannot be performed when the overload OL occurs The NULL constant can be checked in during th...

Page 80: ...lues in the specified number of times smoothing count are calculated by using the moving averaging method the dispersion of the measurement values becomes small The smoothing calculation equation is s...

Page 81: ...smoothing calculation The smoothing calculation restarts from N 1 when any of the following conditions occur The power is turned on The smoothing count is changed The NULL calculation is performed Me...

Page 82: ...of the following conditions occur The key is pressed while the smoothing calculation is performed The measurement function is changed The RST command is executed 5 Smoothing calculation and overload O...

Page 83: ...culation is canceled and the MATH lamp turns off CAUTION The actual measurement value is not displayed while the scaling calculation is performed Remember that any hazardous voltage present on the inp...

Page 84: ...calculation result exceeds the values of 999 9999E 6 999 999E 6 for 7451A In this time the measurement range is not changed to the upper range even if the measurement range is set to Auto range Auto r...

Page 85: ...he calculation error occurs and error message is displayed Only one calculation can be selected from the dB dBm and scaling calculations at a time The dB and dBm calculation equations are shown below...

Page 86: ...s through the following order p n m No unit prefix k M G T Press the key in this mode if setting the measurement value as Constant D 4 Press to apply the setting 3 Canceling the dB and dBm calculation...

Page 87: ...and status register The buzzer sounds only when BEEP is set to ON The comparator calculation can be applied to all measurement functions However when MAX MIN is set to ON the comparator calculation i...

Page 88: ...if setting the measurement value as the High or Low constant 3 Press to apply the setting If the constants are set as High constant Low constant the calculation results may be judged as HI and LO In...

Page 89: ...ASS setting mode 2 Select the PASS condition by using and 6 Canceling the comparator calculation The comparator calculation is canceled when any of the following conditions occur The comparator calcul...

Page 90: ...culation 4 If BEEP is set to ON the buzzer sounds when the MAX or MIN value is renewed However although the displayed value is not changed the buzzer may sound This is because the resolution of measur...

Page 91: ...et Select a display item according to 2 Setting the calculation in this section The selected value is displayed by pressing 5 Canceling the MAX MIN calculation The MAX MIN calculation is canceled when...

Page 92: ...r of samples SCNT Number of data Number of overload in the specified range Maximum value SMAX Maximum value of the data to be calculated Minimum value SMIN Minimum value of the data to be calculated A...

Page 93: ...ation result 1 The display item of the calculation results can be selected in STAT in 2 Select a display item by pressing and after the statistical calculation is per formed MENU MENU 7 MEM STAT SAMPL...

Page 94: ...conditions stored in USER0 can be loaded when the power is turned on Select from the followings in PON LD in the category in P OFF Starts this instrument under the measurement conditions stored when...

Page 95: ...t When the number of measurement results reaches 10000 20000 for 7461P the buzzer sounds and the ST indicator blinks 5 11 2 Memory Recall Enter the data number to be recalled in RCL in in Pressing det...

Page 96: ...AC voltage measurement Resistance measurement Diode mea surement Continuity measurement and Frequency measurement Select the front or rear input terminals from TERM in in As for the 7461P the input te...

Page 97: ...setting To cancel the disabling setting and enable all functions initialize in in or re set all functions in F Inhi in in Table 5 9 Relationship according to Disabling the Function Higher function Fu...

Page 98: ...wing procedure Operation Character display section 1 Press and select by using and MENU SYS 2 Press SYS BEEP 3 Select PWD by using and SYS PWD 4 Press PWD NEW 5 Select the digit in the numerical value...

Page 99: ...BEEP 3 Select P Lock by using and SYS P Lock 4 Press P Lock OFF 5 Select ON by using and and press P Lock ON 6 Select the digit in the numerical value entry section by using and Change the numerical...

Page 100: ...y command Up to 20 errors can be recorded For more information on error numbers and solutions refer to Section 8 11 Error Message List Reading the error queue Errors are displayed in order by pressing...

Page 101: ...The interface setting item and the initial setting when shipping are shown below Setting item Initial setting when shipping Header ON OFF ON GPIB address USB ID 1 GPIB talker function Addressable Sel...

Page 102: ...6 When the response is set to the new model name the indicator at the lower right of the display section is turned off Changing the response to IDN by remote command When the response is set to the o...

Page 103: ...common to the USB commands General Specifications Standard IEEE 488 Code ASCII code Logical level Logic 0 High state 2 4 V or more Logic 1 Low state 0 4 V or less Table 6 1 Interface Functions Code F...

Page 104: ...es on the bus before connecting or disconnecting GPIB cables Check that the chas sis of the devices on the bus are connected to each other and to the ground before connecting or dis connecting any GPI...

Page 105: ...move to the BUS selection layer BUS GPIB 5 Select GPIB by using the and keys 6 Press to set BUS to GPIB and move to the I F cat egory layer I F BUS 7 Select GP Adr by using the and keys 01 I F Current...

Page 106: ...and keys 4 Press to move to the BUS selection layer BUS GPIB 5 Select GPIB by using the and keys 6 Press to set BUS to GPIB and move to the I F cat egory layer I F BUS 7 Select T ONLY by using the an...

Page 107: ...ll Speed Connector USB B type female ID Any number from 1 to 127 can be set as USBid Remote Local Function is available Input command ASCII strings command which sets functions and the query command O...

Page 108: ...ntrol Signal 6 4 1 External Trigger Terminal TRIGGER IN This instrument can be triggered by inputting a negative logic pulse from the external trigger terminal TRIGGER IN on the rear panel Select EXTe...

Page 109: ...is output when the measurements set in sampling count are complete For more information refer to Measurement Timing according to the Trigger Source in Section 5 8 2 Trigger Source Selection Select Si...

Page 110: ...rigger terminal to the complete signal output Tc Tc Tin Sampling count 2 5 msec Tin The longest time in the followings Sampling interval SI Integration time IT 30 sec 310 sec Display OFF Measurement d...

Page 111: ...t Allowable contact voltage for break DC30 V Allowable contact current DC120 mA Withstand voltage between contact and GND 30 V Contact operating time 1 ms or less Contact output LO 4 pin and 8 pin HI...

Page 112: ...ELAY HI RELAY PASS TTL PASS RELAY LO TTL FAIL Hi make See Table 6 4 break See Table 6 4 Go break break Lo break make Table 6 4 Optical Semiconductor Relay Contact and TTL Logical Output b PASS conditi...

Page 113: ...mparator output is disabled Table 6 5 ADC Commands Command Description DO0 Digital output disabled Comparator output enabled DO1 Digital output enabled Comparator output disabled DO Query of digital o...

Page 114: ...output setting Controls arbitrarily the TTL signal or relay contact signal corresponding to 5 bits n 0 to 31 indicates a number that is converted from 5 bit binary to decimal Example DOUTput BITS 0 D...

Page 115: ...ess to enter in the entry layer 3 Select from SCPI ADC and R6552 by pressing and and press to apply the setting SCPI SCPI Command GPIB only ADC Command used in ADC CORPORATION GPIB USB only R6552 Comm...

Page 116: ...asurement data memory When two or more measurement results are output from the measurement data memory the comma is output as a data delimiter Z STP n RCLP n BZ n BZ Command Description ADC language s...

Page 117: ...I DC current measurement DCI ACI AC current measurement ACI ADV AC voltage AC DC coupling measurement ACV AC DC ADI AC current AC DC coupling measurement ACI AC DC DOD Diode measurement Diode R2L Low...

Page 118: ...riority O Error information Range over 1 O Calculation Scaling error 1 E Err D dB dBm calculation error 2 H Calculation result infor mation Comparator result HIGH 3 P GO 3 L LOW 3 M MAX data 4 I MIN d...

Page 119: ...DCV 100 mV ddd ddddE 03 DCV 300 mV ddd dddE 03 1000 mV dddd dddE 03 3000 mV dddd ddE 03 10 V dd dddddE 00 30 V dd ddddE 00 100 V ddd ddddE 00 300 V ddd dddE 00 1000 V dddd dddE 00 1000 V dddd ddE 00...

Page 120: ...300 k ddd dddE 03 1000 k dddd dddE 03 3000 k dddd ddE 03 10 M dd dddddE 06 30 M dd ddddE 06 100 M ddd ddddE 06 300 M ddd dddE 06 DCI 1000 A dddd dddE 06 DCI 3000 A dddd ddE 06 10 mA dd dddddE 03 30 mA...

Page 121: ...00 LP 4W 300 ddd dddE 00 1000 dddd dddE 00 3000 dddd ddE 00 10 k dd dddddE 03 30 k dd ddddE 03 100 k ddd ddddE 03 300 k ddd dddE 03 1000 k dddd dddE 03 3000 k dddd ddE 03 10 M dd dddddE 06 30 M dd dd...

Page 122: ...sistance measurement 4W F5 DC current measurement DCI F6 AC current measurement ACI F7 AC voltage AC DC coupling measurement ACV AC DC F8 AC current AC DC coupling measurement ACI AC DC F12 DC voltage...

Page 123: ...or ST1 IRDn m Readout range setting n m 0 to 9999 7451A 61A 0 to 19999 7461P Parameters cannot be omitted 0 0 IRO Data reading Reply See Section 6 7 2 Output Data Format IRPO Number of measurement re...

Page 124: ...ddd 7461A 61P Reply TDLdddddd 7451A TDS0 NEGATIVE Negative slope TDS1 POSITIVE Positive slope TDS2 BOTH absolute value TDS Reply One of TDS0 to TDS2 TDC0 CONVERGE Convergence TDC1 EMISSION Divergence...

Page 125: ...L0 0 OFF PTL1 25 PTL2 50 PTL3 75 PTL Reply PTLd Complete signal output mode TRCM0 SINGLE TRCM1 MULTI TRCM Reply TRCM0 or TRCM1 Complete signal width CW0 Specifying the output signal width of the compl...

Page 126: ...0 M R Reply One of R0 R3 to R9 7451A DCV ACV ACV AC DC 2W 4W DCI ACI ACI AC DC LP 2W LP 4W Freq R0 AUTO AUTO AUTO AUTO AUTO AUTO AUTO AUTO AUTO AUTO AUTO R2 30 30 R3 300 mV 300 mV 300 mV 300 300 300 3...

Page 127: ...digit display 7461A 61P only RE Reply One of RE3 to RE6 7461A 61P One of RE3 to RE5 7451A AC filter 2 FL1 FAST FL2 MED FL3 SLOW FL Reply One of FL1 to FL3 Auto zero AZ0 OFF AZ1 ON AZ2 ONCE Auto zero...

Page 128: ...ply TIddd Scaling calculation SC0 OFF SC1 ON SC Reply SC0 or SC1 KAn Constant A Zero cannot be set n 9999999 E 6 to 9999999 E 6 7461A 61P n 999999 E 6 to 999999 E 6 7451A Setting resolution 0 000001E...

Page 129: ...Section 6 7 2 Output Data Format MN0 MAX MIN calculation OFF MN1 MAX MIN calculation ON MN Reply One of MN0 to MN1 MAX MAX value reading 3 Reply M d ddddddE dd 7461A 61P Reply M d dddddE dd 7451A MIN...

Page 130: ...alculation result HI is not specified as the PASS condition HIP1 Calculation result HI is specified as the PASS condition HIP Reply HIP0 or HIP1 Statistical calculation SIRDn m Statistical calculation...

Page 131: ...output enabled DO1 Digital output enabled comparator output disabled DO Query of digital output Reply DO0 or DO1 DOSn Controls arbitrarily the TTL signal or relay contact signal corre sponding to 5 bi...

Page 132: ...e to IDN OID Response OID0 or OID1 Instrument information For 7461P new model name response only IDN New model name response ADC Corp xxxxx nnnnnnnnn mmm xxxxx 7451A 7461A or 7461P Product model name...

Page 133: ...er QEER n 0 to 65535 QSE Reply ddddd OSR Reads the operation event register OER Reply ddddd OSEn Sets the operation event enable register OEER n 0 to 65535 OSE Reply ddddd PSCn n 32767 to 32767 If n i...

Page 134: ...characters one byte alphanumeric characters can be stored CMNT Reply CMNT xxxx xxx Setting parameter SAVn n 0 to 3 Saves the setting parameters in area n of the non volatile memory SINI Sets the valu...

Page 135: ...on and a parameter section The command and parameter sections are delimited by a space Commas are used to delimit two or more parameters The ellipsis displayed between commas shows that the parameters...

Page 136: ...e number of decimals str Shows a character string or alphanumeric symbols enclosed in quotation or double quotation marks func Shows the same character string as the query reply to the SENSe FUNCtion...

Page 137: ...Tage AC 2W RESistance 4W FRESistance DCI CURRent DC ACI CURRent AC ACV AC DC VOLTage ACDC ACI AC DC CURRent ACDC Diode DIODe LP 2W RESistance LPOWer LP 4W FRESistance LPOWer Continuity CONTinuity Freq...

Page 138: ...nction RANGe 0 Setting value Maximum value in the measurement range 750 V in the fre quency measurement real_6 7461A 61P real_5 7451A ACV ACV AC DC Freq 2W 4W DCI ACI ACI AC DC LP 2W LP 4W The setting...

Page 139: ...DC ACI and ACI AC DC functions SENSe Function FILTer FAST MED SLOW FAST MED SLOW Auto zero setting SENSe ZERO AUTO ON 1 OFF 0 ONCE 1 0 Continuity threshold constant SENSe CONTinuity THReshold 1 10 100...

Page 140: ..._5 7451A Constant B setting 4 CALCulate SCALing B Constant C setting 4 CALCulate SCALing C MAX MIN MAX MIN calculation setting CALCulate AVERage ON 1 OFF 0 1 0 MAX value reading CALCulate AVERage MAXi...

Page 141: ...Culate STATistics MAXimum Minimum value reading CALCulate STATistics MINimum Average value reading CALCulate STATistics AVERage Standard deviation value read ing CALCulate STATistics DEViation MAX MIN...

Page 142: ...N EXTernal EXT BUS BUS LEVel LEV DELTa DELT Trigger count TRIGger COUNt 1 1 50000 int_5 Trigger delay TRIGger DELay 0 0 3600 real_4 Sampling interval TRIGger TIMer 0 00005 0 5 3600 7461A 61P 0 0002 0...

Page 143: ...rement data display setting DISPlay ON 1 OFF 0 1 0 Measurement data memory TRACe STATe Store setting ON 1 OFF 0 1 0 Initialization TRACe CLEar Readout range setting TRACe NUMBer 0 0 9999 0 0 9999 7451...

Page 144: ...ter reading STATus MEASurement EVENt int_5 Function description SCPI Command Parameter Query reply Each status byte clear CLS Standard Event Status Enable Reg ister setting ESE 0 0 127 int_3 Standard...

Page 145: ...es correspondent to each event Sometimes the changes are retained Once this register is set the setting value is kept until it is read by a query or cleared by CLS Data cannot be written into the even...

Page 146: ...Digital Multimeter Operation Manual 6 7 5 Status Register Structure 6 46 The status register structure in this instrument is shown in Figure 6 4 and Figure 6 5 Figure 6 4 Status Register Structure 1 2...

Page 147: ...ure 2 2 2 Event enable register Each event register has an enable register that determines which bit is to be enabled The enable reg ister sets the corresponding bit in decimal Service Request Enable...

Page 148: ...erently than the status register structure This section describes the status byte register The status byte register structure is shown in Figure 6 6 Figure 6 6 Status Byte Register Structure This stat...

Page 149: ...e and no data has existed in Error Queue 3 QSB Questionable Sum mary Bit ON When any event of Questionable Event Register occurs and Questionable Event Register is set to 1 this bit is set to 1 if the...

Page 150: ...the power is turned on When the CLS command is executed However the MAV bit is not cleared if data exists in the output buffer The status byte register is not cleared by executing STB command Conditi...

Page 151: ...tion Complete ON This bit is set to 1 when all operations are complete after receiving the OPC command 1 Not used Always 0 2 QYE Query Error ON This bit is set to 1 under any of the following conditio...

Page 152: ...e FAIL conditions 1 PS PASS ON This bit is set to 1 when the comparator calculation result satisfies the PASS conditions 2 Not used Always 0 3 Not used Always 0 4 Not used Always 0 5 Not used Always 0...

Page 153: ...Voltage Overload ON This bit is set to 1 when OL occurs in the voltage or diode measurement 1 Current Overload ON This bit is set to 1 when OL occurs in the current measurement 2 Not used Always 0 3...

Page 154: ...register When the power is turned on When the STATus OPERation ENABle 0 command is executed When the OSE0 command is executed Table 6 11 Operation Event Register OER bit Name Description 0 Not used A...

Page 155: ...which depends on the multimeter Example 1 Measures a voltage in the DCV 10 V range and reads the measurement data from the 7461A The GPIB address of the 7461A is set to 1 Dim DMM_ADR As Integer Decla...

Page 156: ...S as the trigger Call ibwrt dmm CLS Chr 10 Clears the status byte Call ibwrt dmm TRG Chr 10 Triggers Do Reads the status byte of the measurement end Call ibwrt dmm STB Chr 10 Requests the contents of...

Page 157: ...0 Enables the measurement memory Call ibwrt dmm ICL Chr 10 Clears the measurement memory Call ibwrt dmm SPN1000 Chr 10 Sets the sampling counts per one trigger 1000 counts Call ibwrt dmm IRD0 999 Chr...

Page 158: ...nual 6 8 Sample Programs Command used in ADC CORPORATION 6 58 Call ibwrt dmm DS1 Chr 10 Sets the display to ON Call ibonl dmm 0 Terminates Note The GPIB hardware setting is changed Return to the origi...

Page 159: ...s Integer Declares the variable of the device descriptor Dim dt As String 100 Declares the variable of the buffer used for receiving the GPIB data DMM_ADR 1 The GPIB address of the 7461A Call ibdev 0...

Page 160: ...alizes the 7461A Call ibwrt dmm SENSE FUNCTION RESISTANCE Chr 10 Sets the measurement function to 2W Call ibwrt dmm SENSE RESISTANCE RANGE 1000 Chr 10 Sets the measurement range to 1k Call ibwrt dmm S...

Page 161: ...to DCV Call ibwrt dmm SENSE VOLTAGE DC RANGE 10 Chr 10 Sets the measurement range to 10 V Call ibwrt dmm TRIGGER SOURCE BUS Chr 10 Specifies BUS as the trigger Call ibwrt dmm INITIATE CONTINUOUS ON C...

Page 162: ...l dmm 0 Terminates Exit Sub Else Call ibrsp dmm s Reads the status byte End If Call ibwrt dmm TRACE DATA Chr 10 Requests the measurement value data Call ibrd dmm dt Substitutes the measurement value f...

Page 163: ...5 0 5 0 5 0 5 0 7 0 1000 mV 1199 999 1 V More than 1 G 10 M 1 0 0020 4 0 0 0030 5 0 0 0040 5 0 5 0 1 0 5 0 5 0 10 V 11 99999 10 V More than 1 G 10 M 1 0 002 3 0 0 0030 3 0 0 0035 3 0 5 0 1 0 5 0 5 0 1...

Page 164: ...0 5 0 3000 mV 3199 99 10 V More than 1 G 10 M 1 0 0020 2 0 0 0060 3 0 0 0100 3 0 7 0 0 1 7 0 3 0 30 V 31 9999 100 V 10 M 1 0 0020 3 0 0 0070 6 0 0 0150 6 0 8 0 1 0 8 0 3 0 300 V 319 999 1 mV 10 M 1 0...

Page 165: ...ange Maximum display Resolution Input impedance Measurement accuracy 1 of reading digits 23 C 5 C 20 Hz 45 Hz 45 Hz 100 Hz 100 Hz 20 kHz 20 kHz 50 kHz 50 kHz 100 kHz 100 kHz 300 kHz 2 V COM 100 mV 119...

Page 166: ...9 99 10 mV 1 M 2 140 pF or less 0 28 4 0 1 4 0 06 4 0 12 5 0 6 8 4 50 700 V 749 9 100 mV 1 M 2 140 pF or less 0 28 3 0 1 3 0 06 3 0 12 4 0 6 6 4 35 1 AC filter SLOW Integration time 10 PLC Display dig...

Page 167: ...T 10 s In a 6 1 2 digit display 2 Input terminal Range Maximum display Resolution Input impedance Measurement accuracy 1 of reading digits 20 Hz 45 Hz 45 Hz 100 Hz 100 Hz 20 kHz 20 kHz 50 kHz 50 kHz 1...

Page 168: ...0 2 15 0 6 24 4 150 700 V 749 9 100 mV 1 M 2 140 pF or less 0 28 3 0 1 3 0 06 3 1 AC filter SLOW Integration time 10 PLC Display digit 4 1 2 Sinusoidal input voltage The input voltage is restricted t...

Page 169: ...ement cable resistance and 0 2 internal circuit resistance error are added to the digit error in 2W measurement 2 Relative value with respect to the calibration standard 3 15 ppm C is added to the tem...

Page 170: ...C Auto zero ON Auto zero OFF 30 31 9999 100 10 mA 0 0030 30 0 0 0100 40 0 0 0150 40 0 10 0 5 0 10 0 50 0 300 319 999 1 m 1 mA 0 0020 5 0 0 0080 11 0 0 0150 11 0 10 0 1 0 10 0 6 0 3000 3199 99 10 m 1...

Page 171: ...0 3000 k 3199 99 10 100 nA 0 0600 20 0 0 1800 33 0 0 2000 33 0 100 0 5 0 3 100 0 5 0 3 30 M 31 9999 100 10 nA 0 6000 20 0 1 7000 33 0 2 0000 33 0 1000 0 5 0 4 1000 0 5 0 4 1 Integration time 10 PLC Au...

Page 172: ...3 19999 10 A 0 5 0 1 15 0 1000 20 0 0 1000 30 0 50 0 20 0 50 0 30 0 1 Integration time 10 PLC Display digit 6 1 2 Auto zero ON 2 Relative value with respect to the calibration standard Integration ti...

Page 173: ...Integration time Additional error digit 100 s IT 200 s In a 3 1 2 digit display 2 200 s IT 2 ms Includes FAST1 and FAST2 In a 4 1 2 digit display 10 2 01 ms IT 9 99 ms In a 5 1 2 digit display 20 10...

Page 174: ...9 100 nA 103 0 45 4 0 25 4 0 11 4 10 mA 11 999 1 A 10 5 0 45 4 0 25 4 0 11 4 100 mA 119 99 10 A 1 5 0 45 4 0 25 4 0 11 4 1000 mA 1199 9 100 A 0 5 0 45 4 0 25 4 0 11 4 3 A 3 199 1 mA 0 5 0 45 1 2 0 25...

Page 175: ...0 nA 10 5 0 45 200 0 25 200 0 2 200 30 mA 31 9999 100 nA 10 5 0 45 200 0 25 200 0 2 200 300 mA 319 999 1 A 1 5 0 45 200 0 25 200 0 2 200 3000 mA 3199 99 10 A 0 5 0 45 200 0 25 200 0 2 200 1 AC filter...

Page 176: ...estricted to the maximum allowable applied voltage Frequency bandwidth Additional error of reading Response time 1 20 Hz 45 Hz 45 Hz 100Hz 100 Hz 1 kHz More than 1 kHz SLOW 20 Hz 5 kHz 0 0 0 0 3 s MED...

Page 177: ...splay Resolution Measurement current 1000 mV 1199 999 1 V 1 mA The specifications other than the above are the same as those of 1000 range in 2W measurement However the offset error which is calculate...

Page 178: ...or K Range Maximum display Resolution Measurement current 1000 1199 999 1 m 1 mA Specifications not described above are the same as those in the 1000 range in the 2W measurement Continuity judgment s...

Page 179: ...es s 3 times s 1 PLC ON SLOW1 4 5 times s 4 5 times s 4 5 times s 2 times s 5 PLC ON SLOW2 2 times s 2 times s 2 times s 1 time s 10 PLC ON 1 Under the following conditions Trigger source BUS EXT MAN...

Page 180: ...10 s 200 s 6 s to 10 s 200 s 0 02 PLC to 100 PLC 0 01 PLC 0 02 PLC to 100 PLC 0 01 PLC Sampling interval SI Sampling interval SI Setting range Setting range 50 s to 3600 s 200 s to 3600 s Function DC...

Page 181: ...starts Display value AVE Arithmetic mean after the calculation starts Remote output only dB and dBm calculation dB display 20 log Measurement value D dBm display value 10 log Measurement value 2 D 10...

Page 182: ...tor output Output signal TTL Output PASS FAIL Comparator output TTL output PASS FAIL Relay output PASS Hi Lo PASS FAIL output can be set individually Digital output TTL output 2 outputs Relay contact...

Page 183: ...rear Can be switched manually and remotely Front V HI 4W Bch LO 4W Bch mA and COM terminals Rear V HI 4W Bch LO 4W Bch and COM ter minals Memory Data memory Up to 10 000 data 7451A 61A Up to 20 000 da...

Page 184: ...al 7 4 Options 7 22 7 4 Options Table 7 1 Options Option Description OPT32 Changing the power supply voltage For 120 V OPT42 Changing the power supply voltage For 220 V OPT44 Changing the power supply...

Page 185: ...eplace with a fuse listed in Table 8 1 Never use an incompatible fuse and short circuit the fuse holder 2 Whether a fuse has blown cannot be checked by observation Measure the resistance of the fuse a...

Page 186: ...hanging the Power Supply Voltage 8 1 2 Replacing a Protection Fuse To prevent fire and burns when an overcurrent is supplied in the current input terminal a fast blow fuse is included on the rear pane...

Page 187: ...this instrument 8 2 1 Cleaning the Outside Use a soft or damp cloth to clean this instrument NOTE 1 Do not allow water inside this instrument or lint on this instrument 2 Do not use an organic solvent...

Page 188: ...rform calibration after allowing a warm up time of 60 minutes or more Sufficient warm up time is also required for the instrument used for calibration 8 3 2 Calibration Standards Calibration standard...

Page 189: ...nd full scale points 7 In the ACV AC DC and ACI AC DC measurements no calibration is required because the instru ment is calibrated when the calibration is performed in the DC voltage and AC voltage m...

Page 190: ...ort 10 k 100 k Short 100 k 1000 k Short 1000 k 10 M Short 10 M 100 M Short 100 M Table 8 3 Calibration Point 7451A 1 of 2 Measurement function Range Zero Calibration point1 Calibration point2 Calibrat...

Page 191: ...en 3000 A 1 kHz 30 mA 1 kHz 300 mA 1 kHz 3000 mA Open 30 mA 1 kHz 300 mA 1 kHz 3000 mA 1 kHz LP 4W LP 2W zero 300 Short 300 3000 Short 3000 30 k Short 30 k 300 k Short 300 k 3000 k Short 3000 k 30 M S...

Page 192: ...nt panel 7 Calibrate the full scale point in a function and range to be calibrated 8 Calibrate the zero point for the input terminal on the rear panel The input termi nal on the front panel is still s...

Page 193: ...nect the calibration standard to the input terminal on the front panel 14 Set a range to be calibrated 15 Input a voltage equivalent to the calibration point 16 Pressing the key displays the measureme...

Page 194: ...n the record and the ERR indicator lights Canceling the calibration mode 24 Select OFF from CAL in in 25 Press to determine the setting The CAL indicator is turned off and indicates that the calibrati...

Page 195: ...hat the life span may be shorter than that described depending on the operating environment frequency of use and storage environment MEMO The table shows the life spans of parts and the number of time...

Page 196: ...ce Component Used Not used Location Unit Component Quantity in maximum configuration Polychlorinated biphenyls PCB containing capacitors Not used Mercury containing compo nents Not used Batteries Not...

Page 197: ...ain frame BLL 031484X05 04 03 Photo coupler and logic IC 2 Nickel and Nickel com pounds Used Main frame Electronic components and mechanical parts Nickel plated parts Lead and Lead compounds Used Main...

Page 198: ...the carton case and cover all sides of this instrument with cushioning materials 2 Place accessories in the carton case and then place the cushioning materials 3 Close the carton case and bind it wit...

Page 199: ...rmation on how to initialize the parameters refer to Section 5 10 Sav ing and Loading the Measurement Condition Settings Initial value when shipping The following shows how to set all parameters excep...

Page 200: ...OFF HIGH value 0 0 Saved value 0 Selecting USER0 3 0 LOW value 0 0 Saved value 0 Selecting USER0 3 0 MAX MIN calculation OFF OFF Saved value OFF Selecting USER0 3 OFF Selecting the MAXIMUM and MINIMU...

Page 201: ...ecting USER0 3 SINGLE Input terminal Front Front Saved value Front Selecting USER0 3 Front PASS FAIL buzzer OFF OFF Saved value OFF Selecting USER0 3 OFF Buzzer OFF OFF Saved value OFF Selecting USER0...

Page 202: ...0 0 0 Status register SESER 0 0 0 Status register MEER 0 0 0 Status register SRER 0 0 0 Status register QER 0 0 0 0 Status register SESR 0 0 0 0 Status register STB 0 0 0 0 Status register OER 0 0 0 0...

Page 203: ...light Pressing panel keys display their names Test according to the following procedure Table 8 7 Self Test Items Item Can be performed from the Panel or by Remote Can be performed when the power is...

Page 204: ...KEY ENTER 5 Press All segments of the display are turned on The display changes after a few seconds KEY Push 6 Press a key to be checked KEY Key name to be pressed 7 To quit the key test press KEY SH...

Page 205: ...ion 7 Err16 FLASH memory writing error FLASH memory error No solution 8 Err101 The function cannot be set Inhibited function Solution1 9 Err150 USB communication error Illegal packet received Solution...

Page 206: ...Is1 mA 1 measurement test error in analog operation OhmIs 1mA_1 Check No solution 28 Err223 Is1 mA 2 measurement test error in analog operation OhmIs 1mA_2 Check No solution 29 Err224 Is100 A measurem...

Page 207: ...utside the setting range or lacking for nec essary parameters Data out of range Solution7 44 Err 313 Calibration data is lost Calibration memory lost Solution8 45 Err 314 Parameters saved by SAV comma...

Page 208: ......

Page 209: ...L OUTLINE DRAWING Unit mm NOTE This drawing shows external dimensions of this instrument The difference in products and options used can cause a change in the appearance of the instrument DIMENSIONAL...

Page 210: ......

Page 211: ...and dBm calculation 5 37 DC Current Measurement DCI 7 10 DC Voltage Measurement DCV 5 9 7 1 DC Voltage Measurement DCV Bch 5 9 Digital Output 7461P Only 6 13 Diode Measurement 7 15 Disabling Function...

Page 212: ...h Limited Life 8 11 Resistance Measurement 2W LP 2W 4W LP 4W 7 7 Response to the IDN Command 7451A 61A Only 6 1 S Sample Programs Command used in ADC CORPORATION 6 55 Sample Programs SCPI command 6 59...