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7451A/7461A/7461P Digital Multimeter Operation Manual

5.3.2 Auto-range

5-12

5.3.2

Auto-range

When Auto-range is set to ON, the measurement range of this instrument automatically changes to the
optimum range depending on the input voltage.

The judgment value used when the range is changed

Range DOWN

When the displayed value is less than 10% of the displayed range (less than 300 V if
the DCV 1000 V range and ACV (AD+DC) 700 V range are both selected)

Range UP

When the displayed value exceeds the maximum display

Auto-range is set to OFF under the following conditions.

•

The sampling interval is set 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 performed.

For example, in the following measurements, set the range before performing any measurements.

• When measuring the average value of a pulse:

Set the measurement range so that the maximum value of the pulse can be measured.

• When acquiring the measurement data at a constant interval:

The measurement interval varies if the measurement range is changed.

• When setting the sampling count to two or more for one trigger

The measurement interval varies if the measurement range is changed.

• When performing the high-speed measurement:

It takes time to set the measurement range to the optimum range.

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Содержание 7451A

Страница 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...

Страница 2: ......

Страница 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...

Страница 4: ......

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 28: ......

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 208: ......

Страница 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...

Страница 210: ......

Страница 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...

Страница 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...

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