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ABM-4083 

10 
 

Chapter 2    DMM Overview 

2.1    Front Panel Summary 

The front panel of the DMM is shown in Figure 2-1. This figure includes some important abbreviated infor-

mation that should be reviewed before operating the instrument. 

 

Figure 2-1 

DMM Front Panel 

 

1.  Measurement function keys (shifted and unshifted) 

 

Select measurement function: DC voltage and current, AC voltage and current, 2-wire and 4-wire re-

sistance, frequency, period, continuity and diode test. 

2.  Math function keys 

Select the math function: mX+b, %, dB, dBm and Rel. 

3.  Menu operation keys 

Shift 

→

 

 

Open/Close menu 

Содержание ABM-4083

Страница 1: ...ABM 4083 61 2 Digital Multimeter USER S MANUAL www tmatlantic com...

Страница 2: ...ected to mains This equipment is POLLUTION DEGREE 2 INDOOR USE product Safety Precautions Users of this product must be protected from electric shock at all times The responsible body must ensure that...

Страница 3: ...est or power line earth ground Always make measurements with dry hands while standing on a dry insulated surface capable of withstanding the voltage being measured The instrument and accessories must...

Страница 4: ...e 16 2 6 3 High Energy Circuit Safety Precautions 16 2 6 4 Power on Defaults 17 2 6 5 Warm up time 19 2 7 Display 19 Chapter 3 Basic Measurements 20 3 1 Preparation 20 3 2 Measuring Voltage 20 3 2 1 C...

Страница 5: ...4 4 2 Setting Limit Values 42 4 5 System Operations 43 4 5 1 Beeper Control 43 4 5 2 Save Settings 43 4 5 3 Restore Settings 44 4 5 4 Display Control 44 4 5 5 Key Sound 45 4 5 6 Self test 45 4 5 7 Cal...

Страница 6: ...Command Structure 58 6 2 4 Multiple Command Rules 59 6 2 5 Command Path Rules 59 6 3 Command Reference 59 6 3 1 SCPI Signal Oriented Measurement Commands 59 6 3 2 DISPlay subsystem 62 6 3 3 CALCulate...

Страница 7: ...wo and four wire resistance from 0 1m to 120M Frequency from 5Hz to 1MHz Some additional capabilities of Model DMM Full range of functions In addition to those listed above The DMM functions include p...

Страница 8: ...instructions Such damage may invalidate the warranty 1 5 Incoming Inspection The DMM was carefully inspected mechanically and electrically before shipment After unpacking all items from the shipping c...

Страница 9: ...we will at our option either repair or replace any product that proves to be defective 1 7 Limitation of Warranty This warranty does not apply to defects resulting from product modification without o...

Страница 10: ...d be reviewed before operating the instrument Figure 2 1 DMM Front Panel 1 Measurement function keys shifted and unshifted Select measurement function DC voltage and current AC voltage and current 2 w...

Страница 11: ...surement speed to Slow 5 Trig Hold Key Trig Trigger a measurement from the front panel Shift Trig Hold a stable reading on the display when selected numbers of samples are within the selected toleranc...

Страница 12: ...MX B function 3 PERCENT Set the reference value for PERCENT function 4 dB REF Set the dB reference voltage value 5 dBm REF Set the dBm reference impedance value 6 LIMIT TEST Enable or disable the limi...

Страница 13: ...or RS 232C USB operation 4 PARITY Select the parity mode for RS 232C USB 5 TX TERM Select the terminal character for RS 232C USB communication 6 RETURN Enable or disable the command characters RETURN...

Страница 14: ...Messages Displayed During Menu Operation MESSAGES DESCRIPTION CHANGE SAVED The change made on the parameter level is saved This message will be displayed after you press Auto ENTER to execute the comm...

Страница 15: ...Chassis Grounding terminal 2 Power Line Fuse Holder Assembly DMM can be configured for line voltage of 110 220V 10 AC at line frequency of 50 60Hz 5 Power line fuse is used for instrument protection...

Страница 16: ...er up Sequence On power up Model DMM performs self tests on its EPROM and RAM and lights all segments and annun ciators for about 1 second If a failure is detected the instrument momentarily displays...

Страница 17: ...e and make measurements without disconnecting the digital multimeter 5 De energize the circuit using the installed connect disconnect device 6 Disconnect the test leads from the circuit under test WAR...

Страница 18: ...e DC Diode test Digits Range Rate Frequency and Period Digits Range Relative Value Rate Function GPIB Address Language Limits Beeper High limit Low limit mX b Scale factor Offset Percent Reference On...

Страница 19: ...rage Auto Off 0 0 Medium 10 PLC Medium 1 PLC 2 6 5 Warm up time Model DMM is ready for use as soon as the power up sequence has completed However to achieve rated accuracy and stability allow the inst...

Страница 20: ...oltage Voltage ranges 100 mV 1 V 10 V 100 V 1000 V 750 VAC Maximum resolution 0 1 V on 100mV range AC technique true RMS ac coupled 3 2 1 Connections Assuming Model DMM is under factory default condit...

Страница 21: ...voltage and current accuracies are affected by the crest factor of the waveform the ratio of the peak value to the RMS value Table 3 1 lists the fundamental frequencies at which the corresponding cre...

Страница 22: ...nt manual ranging use the RANGE and keys to select a measurement range consistent with expected current 4 Connect test leads to the source as shown in Figure 3 2 CAUTION Do not apply more than 2A betw...

Страница 23: ...0 range 3 4 1 Connections Assuming Model DMM is under factory default conditions the basic procedure is as follows 1 Connect test leads to the Model DMM as follows A For 2 wire connect the test leads...

Страница 24: ...e instrument electrically 3 5 Measuring Frequency and Period Model DMM frequency measurement range 5 Hz to more than 1MHz Model DMM period measurement range 0 2s to less than 1 s Input signal range 10...

Страница 25: ...le frequency or period readings When the Fast function is chosen Model DMM yield a gate time of ten millisecond the Med function yield a gate time of one hundred millisecond thus the settings of the S...

Страница 26: ...in Figure 3 5 4 Take a reading from the display Note Source current flows from the INPUT HI to INPUT LO terminals Figure 3 5 Continuity Measurement 3 6 2 Threshold resistance level You can define a th...

Страница 27: ...3 Connect test leads to the diode under test as shown in Figure 3 6 4 Take a reading from the display Note Source current flows from the INPUT HI to INPUT LO terminals Figure 3 6 Diode Measurement 3...

Страница 28: ...ll be displayed M 1 000000 2 Use the and keys to choose a numerical place and use and keys to in crement or decrement the digits Enter a value and units prefix 3 Press Auto ENTER to confirm the M valu...

Страница 29: ...user entered constant Percent is the displayed result To configure the percent calculation perform the following steps 1 Press Shift Rel for percent math operation and the present reference value disp...

Страница 30: ...uto ENTER to confirm the reference voltage the message CHANGE SAVED will be dis played for a moment DMM returns back to the measurement status 4 DMM will display the result of the dB calculation If yo...

Страница 31: ...sult of the dBm calculation If you want to change the impedance reference value after the dBm function is enabled you can take ac tions as below 1 Press Shift to enter the command level 5 dBm REF will...

Страница 32: ...ppropriate range for each measurement However you can use manual ranging for faster measurements since the digital multimeter doesn t have to determine which range to use for each meas urement The dig...

Страница 33: ...ves up a level to the command level 7 Use to move across to the filter type command on the command level 3 FILT TYPE will be displayed 8 Press to move down a level to the filter type parameter choice...

Страница 34: ...filter parameters have speed and accuracy tradeoffs for the time needed to display store or output a filtered reading These affect the number of reading conversions for speed versus accuracy and respo...

Страница 35: ...sured The integration time affects the usable digits the amount of reading noise as well as the ulti mate reading rate of the instrument The integration time is specified in parameters based on a numb...

Страница 36: ...gger model because it is modeled after the SCPI commands used to control triggering count 1 Tri gger 1 count sam pl e M AN BUS I M M edi ate Tri gger source I ni ti ate Tri ggeri ng I N I Ti ate READ...

Страница 37: ...4W 100 3ms 1k 3ms 10k 13ms 100k 25ms 1M 100ms 10M 150ms 100M 250ms Continuity 1k 3ms Diode testing 1mA 1ms 100uA 1ms 10uA 1ms Take steps below for delay settings 1 Press Shift to enter the menu on th...

Страница 38: ...on versions to yield a single filtered reading Only one reading conversion is performed if the filter is disabled or after the specified number of reading conversions for a moving average filter is re...

Страница 39: ...to choose a numerical place and use and keys to increment or decrement the digits Enter a value of count from 2 to 100 11 Press Auto ENTER to confirm the count The message CHANGE SAVED will be display...

Страница 40: ...RDGS STORE function 6 Use or key to set reading store function to ON or OFF 7 Press Auto ENTER to confirm the ON OFF selection The message CHANGE SAVED will be dis played to show that the change is no...

Страница 41: ...ored reading n is the number of stored readings The STD value is the standard deviation of the buffered readings The equation used to calculate the standard deviation is Where is a stored reading n is...

Страница 42: ...ommand level within the MATH MENU 1 SET M will be dis played 4 Use or key to move across to the HIGH LIMIT command 7 HIGH LIMIT will be dis played 5 Press to move down a level to input the high limit...

Страница 43: ...e following steps to change the beeper s state 1 Press Shift to enter the menu on the menu level A MEAS MENU will be displayed 2 Use or key to move across to the SYS MENU on the menu level D SYS MENU...

Страница 44: ...Press to move down to the command level within the SYS MENU 1 RDGS STORE will be displayed 4 Use or key to move across to the LOAD CNFG command 6 LOAD CNFG will be dis played 5 Press to move down a le...

Страница 45: ...ting 1 Press Shift to enter the menu on the menu level A MEAS MENU will be displayed 2 Use or key to move across to the SYS MENU on the menu level D SYS MENU will be displayed 3 Press to move down to...

Страница 46: ...the calibration date to view the number of times calibration has been performed and to perform calibration Some of the items are password protected to prevent accidental or unauthorized calibration o...

Страница 47: ...panel The interface selection is stored in non volatile memory It does not change when power has been off or after a remote interface reset 5 1 1 USB You can operate the USB device interface as if it...

Страница 48: ...NTERFACE command 2 INTERFACE will be dis played 5 Press to move down a level to select an interface 6 Use or key to select GPIB interface 7 Press Auto ENTER to confirm the selection The message CHANGE...

Страница 49: ...n Table 5 2 Table 5 2 Signal Definition for 9 Pin Connector Function Code 9 Pin Connector Pin Number Transmitted Data TXD 3 Received Data RXD 2 Signal Ground Common GND 5 Figure 5 1 shows the rear pan...

Страница 50: ...ted to the controller is terminated with LF CR or LF CR 5 2 3 Selecting Baud Rate The baud rate is the rate at which Model DMM digital multimeter and the computer communicate Choose one of these avail...

Страница 51: ...ayed 4 Use or key to move across to the PARITY command 4 PARITY will be displayed 5 Press to move down a level to set the parity mode 6 Use or key to select a parity mode 7 Press Auto ENTER to confirm...

Страница 52: ...return method to eliminate the data losses and errors during communication Please refer to the content below before programming communication software 1 For command syntax and format refer to Chapter...

Страница 53: ...the next command being lost when DMM is executing the former com mand Please refer to Chapter 8 for serial interface program examples 5 3 GPIB interface operation This section contains information ab...

Страница 54: ...Addressing Model DMM digital multimeter ships from the factory with a GPIB address of 8 You can set the address to a value of 0 to 30 and the address is saved in the non volatile memory Do not assign...

Страница 55: ...meter REM REMOTE 8 Goes into effect when next addressed to listen IFC ABORT 8 Goes into talker and listener idle states LLO LOCAL LOCKOUT LOCAL keys locked out GTL LOCAL 8 Cancel remote Restore front...

Страница 56: ...m commands in this manual So the lower level commands are legal only when the subsystem commands have been selected A colon is used to separate the higher level commands and the lower level commands S...

Страница 57: ...LD STATe 1 Parameter types The following are some of the more common parameter types b Boolean Used to enable or disable an instrument operation 0 or OFF disables the opera tion and 1 or ON enables th...

Страница 58: ...the fourth letter of the command word is a consonant retain it but drop all the letters after it Example format form If the command contains a question mark query or a non optional number included in...

Страница 59: ...egin with the root command unless it is optional e g SENSe If the root is optional simply treat a command word on the next level as the root The colon at the beginning of a program message is optional...

Страница 60: ...esting CONTinuity Continuity test Description This command combines all of the other signal oriented measurement commands to perform a one shot measurement and acquire the reading When this command is...

Страница 61: ...selected All controls related to the selected function are defaulted to the RST values Continuous initiation is disabled The control source of the Trigger Model is set to Immediate The count values of...

Страница 62: ...g of the Trigger Model If the instrument is in the idle state INITiate takes the instrument out of the idle state If continuous in itiation is enabled INITiate CONTinuous ON then the INITiate command...

Страница 63: ...ay circuitry When disabled the instrument operates at a higher speed While disabled the display is frozen All front panel controls except LOCAL are disabled Normal display operation can be resumed by...

Страница 64: ...et target value for PERCent calculation 100e6 100e6 Use input signal as target value Query percent Enable or disable KMATh calculation Query state of KMATh calculation Read result of KMATh calculation...

Страница 65: ...erformed With MXB or PERCent selected and enabled the result of the calcu lation is displayed The calculated reading is refreshed every time the instrument takes a reading KMATh Commands MMFactor NRf...

Страница 66: ...l reading and use it as the target value for the PERCent calculation STATe b Command syntax CALCulate 1 STATe b Command Parameter b 0 or OFF Disable CALC1 calculation 1 or ON Enable CALC1 calculation...

Страница 67: ...in the buffer PIONts NRf Command syntax CALCulate2 TRACe POINts NRf Command Parameter NRf 2 to 512 Specify buffer size Query POINts Query buffer size Description This command is used to specify the bu...

Страница 68: ...STATe Query state ON or OFF of CALC2 Descriptioon This command is used to enable or disable the CALC2 calculation When enabled the selected CALC2 format will be calculated when the IMMediate or IMMed...

Страница 69: ...ange sensitive A limit of 1 for DCV is 1V on all measurement ranges STATe b Command syntax CALCulate3 LIMit 1 STATe b Command Parameter b 0 or OFF Disable limit test 1 or ON Enable limit test Query ST...

Страница 70: ...HOLD VOLT DC 1 5 OFF CURRent AC NPLCycles n NPLCycles RANGe UPPer n UPPer AUTO b AUTO REFerence n STATe b STATe ACQuire REFerence DIGits n DIGits AVERage TCONtrol name TCONtrol COUNt n COUNt STATe b...

Страница 71: ...Query filter type Specify filter count 1 to100 Query filter count Enable or disable filter Query state of digital filter 1 3 ON 0 OFF 6 10 OFF VOLTage AC NPLCycles n NPLCycles RANGe UPPer n UPPer AUT...

Страница 72: ...Query filter type Specify filter count 1 100 Query filter count Enable or disable filter Query state of digital filter 1 1000 ON 0 OFF 6 10 OFF RESistance NPLCycles n NPLCycles RANGe UPPer n UPPer AUT...

Страница 73: ...pe Specify filter count 1 to 100 Query filter count Enable or disable filter Query state of digital filter 1 100e6 ON 0 OFF 6 10 OFF FREQuency THReshold VOLTage RANGe n RANGe REFerence n STATe b STATe...

Страница 74: ...AC Select AC Current CURRent DC Select DC Current RESistance Select 2 wire Resistance FRESistance Select 4 wire Resistance FREQuency Select Frequency PERiod Select Period DIODe Select Diode Testing C...

Страница 75: ...E 01 Notice that the measurement function is not included in the response message Thus you may want to perform a function query after a reading query HOLD Command The following commands are used to co...

Страница 76: ...MINimum 0 1 MAXimum 10 Query NPLCycles Query programmed NPLC value Description The integration period measurement speed for the basic measurement functions except Frequency and Period is set using the...

Страница 77: ...the parameter n 0 05 or 50e 3 in order to select the 100mV range AUTO b Command syntax SENSe 1 CURRent AC RANGe AUTO b Set auto range for ACI SENSe 1 CURRent DC RANGe AUTO b Set auto range for DCI SEN...

Страница 78: ...pecified function MAXimum Maximum value for specified function Query REFerence Query reference for relative function Descripton These commands are used to establish a reference value for the specified...

Страница 79: ...ance REFerence ACQuire Acquire reference for 4 SENSe 1 FREQuency REFerence ACQuire Acquire reference for FREQ SENSe 1 PERiod REFerence ACQuire Acquire reference for PER Description When one of these c...

Страница 80: ...configure and control the filter STATe b Command syntax SENSe 1 CURRent AC AVERage STATe b Control filter for ACI SENSe 1 CURRent DC AVERage STATe b Control filter for DCI SENSe 1 VOLTage AC AVERage S...

Страница 81: ...r count for DCI SENSe 1 VOLTage AC AVERage COUNt n Specify filter count for ACV SENSe 1 VOLTage DC AVERage COUNt n Specify filter count for DCV SENSe 1 RESistance AVERage COUNt n Specify filter count...

Страница 82: ...iode test current to 1mA 10 10 A Specify diode test current to 10 A 100 100 A Specify diode test current to 100 A Query UPPer Query selected range Description There are three current ranges available...

Страница 83: ...multimeter out of remote and restore operation of front panel RS232 only ON ON PRESet Command PRESet Command Syntax SYSTem PRESet Description This command returns the instrument to factory defaults s...

Страница 84: ...or OFF Disable beeper Query STATe Query state of beeper Description This command is used to enable or disable the beeper for limit tests RS 232 Interface Commands LOCal Command syntax SYSTem LOCal Des...

Страница 85: ...ance Query ACV units Select DCV measurement units V DB DBM Path to set DB reference voltage Specify reference in volts 0 to 1000 Query DB reference voltage Path to set DBM reference impedance Specify...

Страница 86: ...x UNIT VOLTage AC DBM IMPedance n Command parameter n 1 9999 Specify reference impedance Query DBM IMPedance Query reference impedance Description This command is used to specify the dBm reference imp...

Страница 87: ...he DB unit is selected DCV dB measure ments are made using the specified dB reference level The reference level is specified in volts and is not range dependent For example a dB reference level of 1 i...

Страница 88: ...trigger system Select control source Query control source Set delay time Enable or disable auto delay Query state of delay Query delay Set measure count Query measure count Specify sample count Query...

Страница 89: ...of trigger mode trigger delay and trigger a measurement SOURce name Command Syntax TRIGger SOURce name Command parameter name IMMediate instrument default setting is internal trigger BUS Triggered via...

Страница 90: ...INimum Set trigger count of 1 MAXimum Set trigger count of 9999 Query COUNt Query trigger count Description Specify the trigger count before the digital multimeter go back to idle Parameter INFinite i...

Страница 91: ...ry 6 3 9 Common Commands Common commands can be used to all equipments We provide some common commands as below RST Command Syntax RST Description Reset the instrument TRG Command Syntax TRG Descripti...

Страница 92: ...C to 18 C and 28 C to 40 C Relative Humidity Up to 80 for 0 C to 28 C 75 RH for 10M and above ranges of resistance measurement Up to 70 for 28 C to 40 C Displayed Readings and Reading rates Full Scal...

Страница 93: ...0 0005 0 0001 0 0005 0 0001 Med 100 000mV 1 00000 V 10 0000 V 100 000 V 1000 00 V 2 1 V 10 V 100 V 1 mV 10 mV 10G 10G 10G 10M 1 10M 1 0 0065 0 0090 1 0 0040 0 0018 1 0 0035 0 0010 0 0045 0 0012 0 0055...

Страница 94: ...0 020 0 002 0 020 0 002 0 080 0 002 1 200 0 020 0 0006 0 0005 0 0006 0 0001 0 0006 0 0001 0 0006 0 0001 0 0010 0 0002 0 0030 0 0004 0 1500 0 0002 Fast 100 00 1 0000 k 10 000 k 100 00 k 1 0000 M 10 00...

Страница 95: ...20 0 002 0 0005 0 005 0 0010 0 005 0 0020 Fast 10 000mA 100 00mA 1 0000 A 10 000 A 1 A 10 A 100 A 1mA 0 15V 10 1 1 5V 10 1 0 3V 0 1 0 15V 0 01 0 10 0 015 2 0 10 0 015 2 0 15 0 015 0 25 0 015 0 002 0 0...

Страница 96: ...100 V 1 mV 1 50 0 20 1 50 0 20 1 50 0 20 1 50 0 20 1 50 0 20 0 50 0 10 0 50 0 10 0 50 0 10 0 50 0 10 0 50 0 10 0 10 0 03 0 10 0 03 0 10 0 03 0 10 0 03 0 10 0 03 0 05 0 03 0 05 0 03 0 05 0 03 0 08 0 0...

Страница 97: ...0 0 08 0 6 0 08 4 00 0 50 4 00 0 50 4 00 0 50 Fast 100 00 mV 1 0000 V 10 000 V 100 00 V 750 0 V 2 10 V 100 V 1 mV 10 mV 100 mV 0 25 0 05 0 25 0 05 0 25 0 05 0 25 0 05 0 60 0 08 0 60 0 08 0 60 0 08 0 6...

Страница 98: ...w 10 00000mA 1 000000 A 10 00000 A 10 nA 1 A 10 A 0 05 0 03 0 10 0 04 0 12 0 04 0 10 0 03 0 50 0 03 0 60 0 05 0 20 0 03 2 00 0 10 2 50 0 10 Med 10 0000mA 1 00000 A 10 0000 A 100nA 10 A 100 A 0 05 0 05...

Страница 99: ...nput Sensitivity Sine Wave 100mV to 750V 1 10 s 1 10 s 10ms 10ms 100ms 100ms 200ms 0 001ns 0 1ns 0 1 s 1 s 9 999 999 9 999 999 99 999 99 199 999 9 0 005 0 005 0 01 0 05 100mVrms 40mVrms 40mVrms 200mVr...

Страница 100: ...ev of stored reading dBm dB Limit Test and mX b dBm Reference Resistance 1 to 9999 1 step size default is 75 Standard Programming Languages SCPI Standard Commands for Programmable Instruments Remote I...

Страница 101: ...port unsigned char code int check_stat int port read serial port state 16bit void send_port int port char c send a character to serial port char read_port int port receive a character form serial por...

Страница 102: ...ps else printf nE10 Serial Port Write Echo Error exit 1 send_port PORT n send command end symbol delay 2 while check_stat PORT 256 read_port PORT read string from serial port void string_rd char ps u...

Страница 103: ...h ah 2 int14 function2 read character int86 0x14 r r if r h ah 128 if ah 7 be set mean trans error printf nE01 Serial port read error exit 1 return r h al check the status of serial port int check_st...

Страница 104: ...R 303 Ram self check failed DCV Calibrate Data is lost DCV Short Data is lost ACV Calibrate Data is lost ACV Short Data is losed DCI Calibrate Data is lost DCI open Data is lost ACI Calibrate Data is...

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