Signametrics SMX2040 Manuel utilisateur

Operator's Manual

Model SMX2040 6½ Digit Digital Multimeter

Model SMX2042 6½ Digit Multi-Function Digital Multimeter

Model SMX2044 6½ Digit LCR Sourcing Digital Multimeter

Signametrics Corporation

July 2004

reproduced in any form without the permission of Signametrics Corporation.

Signametrics 2

CAUTION

In no event shall Signametrics or its Representatives be liable for any consequential damages whatsoever (including,

without limitation, damages for loss of business profits, business interruption, loss of business information, or other

loss) arising out of the use of or inability to use Signametric's products, even if Signametrics has been advised of the

possibility of such damages. Because some states do not allow the exclusion or limitation of liability for

consequential damages, the above limitations may not apply to you.

reproduced in any form without the permission of Signametrics Corporation.

3 Signametrics

TABLE OF CONTENTS

1.0 INTRODUCTION.................................................................................................................................................7

1.1 SAFETY CONSIDERATIONS..........................................................................................................................7

1.2 MINIMUM REQUIREMENTS .........................................................................................................................8

1.3 FEATURE SET .............................................................................................................................................8

2.0 SPECIFICATIONS...............................................................................................................................................9

2.1 DC VOLTAGE MEASUREMENT...................................................................................................................9

2.2 DC CURRENT MEASUREMENT ...................................................................................................................9

2.3 AC VOLTAGE MEASUREMENTS .................................................................................................................9

2.3.1 AC Voltage True RMS Measurement.......................................................................................9

2.3.2 AC Peak-to-Peak Measurement (SMX2044)..........................................................................10

2.3.3 AC Crest Factor Measurement (SMX2044)...........................................................................10

2.3.4 AC Median Value Measurement (SMX2044).........................................................................11

2.4 AC CURRENT MEASUREMENT, TRUE RMS .............................................................................................11

2.5 RESISTANCE MEASUREMENTS..................................................................................................................12

2.5.1 2-wire and 4-wire...................................................................................................................12

2.5.2 6-wire Guarded Resistance Measurement (SMX2044)..........................................................12

2.6 LEAKAGE MEASUREMENT (SMX2044)....................................................................................................12

2.7 RTD TEMPERATURE MEASUREMENT (SMX2044)...................................................................................12

2.8 ADDITIONAL COMPONENT MEASUREMENTS............................................................................................13

2.8.1 Diode Characterization .........................................................................................................13

2.8.2 Capacitance Measurement (SMX2042, 44)...........................................................................13

2.8.3 Inductance Measurement (SMX2044)....................................................................................13

2.8.4 In Circuit AC-Based Capacitance Measurements (SM2044) ................................................13

2.9 TIMING MEASUREMENTS (SMX2042, 44) ...............................................................................................14

2.9.1 Threshold DAC......................................................................................................................14

2.9.2 Frequency and Period Measurement.....................................................................................14

2.9.3 Duty Cycle Measurement.......................................................................................................14

2.9.4 Pulse Width............................................................................................................................14

2.9.5 Totalizer.................................................................................................................................15

2.10 TRIGGER FUNCTIONS .............................................................................................................................15

2.10.1 External Hardware Trigger (at DIN-7 connector) ..............................................................15

2.10.2 PXI Bus Hardware Trigger Inputs (at PXI J2)....................................................................15

2.10.3 PXI Bus Hardware Trigger Output (to PXI J2)...................................................................15

2.10.4 Analog Threshold Trigger....................................................................................................15

2.11 SOURCE FUNCTIONS (SMX2044)...........................................................................................................16

2.11.1 DC Voltage Source ..............................................................................................................16

2.11.2 AC Voltage Source...............................................................................................................16

2.11.3 DC Current Source..............................................................................................................16

2.12 ACCURACY NOTES.................................................................................................................................17

2.13 OTHER SPECIFICATIONS .........................................................................................................................18

3.0 GETTING STARTED.........................................................................................................................................19

3.1 SETTING THE DMM .................................................................................................................................19

3.2 INSTALLING THE DMM MODULE.............................................................................................................19

3.3 INSTALLING THE DMM SOFTWARE PACKAGE ..........................................................................................19

3.4 DMM INPUT CONNECTORS......................................................................................................................19

3.5 STARTING THE CONTROL PANEL..............................................................................................................21

3.6 USING THE CONTROL PANEL....................................................................................................................22

4.0 DMM OPERATIONS AND MEASUREMENTS.............................................................................................24

4.1 VOLTAGE MEASUREMENT........................................................................................................................24

4.1.1 DC Voltage Measurements ....................................................................................................24

4.1.2 True RMS AC Voltage Measurements ...................................................................................25

Signametrics 4

4.1.3 AC Peak-to-Peak and Crest Factor Measurement (SMX2044).............................................25

4.1.4 AC Median Value Measurement (SMX2044).........................................................................26

4.2 CURRENT MEASUREMENTS......................................................................................................................26

4.2.1 Improving Current Measurements.........................................................................................26

4.2.2 Low Level DC Current Measurements...................................................................................27

4.2.3 Extended DC Current Measurements (SM2044) ...................................................................27

4.3 RESISTANCE MEASUREMENTS..................................................................................................................27

4.3.1 2-wire Ohm Measurements....................................................................................................27

4.3.2 4-wire Ohm Measurements....................................................................................................27

4.3.3 Using Offset Ohms function...................................................................................................28

4.3.4 6-wire Guarded Resistance Measurement (SMX2044)..........................................................28

4.3.5 Leakage Measurements (SMX2044) ......................................................................................29

4.3.6 Extended Resistance Measurements (SMX2044)...................................................................30

4.3.7 Effects of Thermo-Voltaic Offset............................................................................................31

4.3.8 Guarding High Value Resistance Measurements (SMX2044)...............................................32

4.4 RTD TEMPERATURE MEASUREMENT (SMX2044)...................................................................................32

4.5 INTERNAL TEMPERATURE (SMX2044)....................................................................................................32

4.6 DIODE CHARACTERIZATION.....................................................................................................................33

4.7 CAPACITANCE MEASUREMENT (SMX2044) ............................................................................................33

4.8 IN-CIRCUIT CAPACITANCE MEASUREMENT (SMX2044) .........................................................................33

4.9 INDUCTANCE MEASUREMENT (SMX2044)..............................................................................................34

4.10 CHARACTERISTIC IMPEDANCE MEASUREMENT (SMX2044)..................................................................34

4.11 TRIGGER OPERATION .............................................................................................................................34

4.11.1 External Hardware Trigger.................................................................................................34

4.11.2 Analog Threshold Trigger....................................................................................................35

4.11.3 Software Issued Triggered Operations................................................................................35

4.11.4 Using the PXI bus Trigger Facilities...................................................................................35

4.12 FREQUENCY AND TIMING MEASUREMENTS (SMX2042, 44) .................................................................36

4.12.1 Threshold DAC....................................................................................................................36

4.12.2 Frequency and Period Measurements .................................................................................37

4.12.3 Duty Cycle Measurement.....................................................................................................38

4.12.4 Pulse Width..........................................................................................................................38

4.12.5 Totalizer Event Counter.......................................................................................................38

4.13 SOURCING FUNCTIONS (SMX2044).......................................................................................................39

4.13.1 DC Voltage Source ..............................................................................................................39

4.13.2 AC Voltage Source...............................................................................................................40

4.13.3 DC Current Source..............................................................................................................40

4.13.4 Source Current - Measure Voltage......................................................................................40

4.14 SYNTHESIZING RESISTANCE (SMX2044)...............................................................................................41

4.15 INTERFACING TO THE SMX4032 SERIES RELAY SCANNERS...................................................................42

4.15.1 Triggering the SMX2040 DMMs .........................................................................................42

4.15.2 Multiplexing with the SMX2040 DMMs...............................................................................43

4.15.3 Interface Commands and Timing.........................................................................................43

5.1 DISTRIBUTION FILES ................................................................................................................................45

5.1.1 The SM40CAL.DAT file........................................................................................................46

5.2 USING THE SMX2040 DRIVER WITH C++ OR SIMILAR SOFTWARE.........................................................47

Multiple Card Operations Under Windows....................................................................................47

5.3 VISUAL BASIC FRONT PANEL APPLICATION.............................................................................................49

5.3.1 Visual Basic Simple Application............................................................................................49

5.4 WINDOWS DLL DEFAULT MODES AND PARAMETERS .............................................................................50

5.5 USING THE SMX2040 DLL WITH LABWINDOWS/CVI®........................................................................50

5.6 WINDOWS COMMAND LANGUAGE ...........................................................................................................51

DMMArmAnalogTrigger ................................................................................................................51

DMMArmTrigger............................................................................................................................52

DMMBurstBuffRead .......................................................................................................................53

DMMBurstRead..............................................................................................................................54

DMMCalibrate................................................................................................................................55

DMMCleanRelay ............................................................................................................................55

DMMClearMinMax ........................................................................................................................56

DMMClosePCI ...............................................................................................................................56

5 Signametrics

DMMDelay .....................................................................................................................................57

DMMDisableTrimDAC...................................................................................................................57

DMMDisArmTrigger ......................................................................................................................58

DMMDutyCycleStr .........................................................................................................................58

DMMErrString................................................................................................................................59

DMMFrequencyStr.........................................................................................................................59

DMMGetACCapsR .........................................................................................................................60

DMMGetBusInfo.............................................................................................................................60

DMMGetCalDate............................................................................................................................61

DMMGetdB.....................................................................................................................................62

DMMGetdBStr................................................................................................................................62

DMMGetCJTemp............................................................................................................................63

DMMGetDeviation .........................................................................................................................63

DMMGetDeviatStr..........................................................................................................................64

DMMGetFuncRange.......................................................................................................................65

DMMGetFunction...........................................................................................................................65

DMMGetGrdVer.............................................................................................................................66

DMMGetHwVer..............................................................................................................................66

DMMGetID.....................................................................................................................................67

DMMGetManDate..........................................................................................................................67

DMMGetMax..................................................................................................................................68

DMMGetMaxStr .............................................................................................................................68

DMMGetMin...................................................................................................................................69

DMMGetMinStr..............................................................................................................................69

DMMGetRange...............................................................................................................................70

DMMGetRate..................................................................................................................................71

DMMGetSourceFreq ......................................................................................................................71

DMMGetTCType.............................................................................................................................72

DMMGetType .................................................................................................................................72

DMMGetVer ...................................................................................................................................73

DMMInit .........................................................................................................................................73

DMMIsAutoRange ..........................................................................................................................74

DMMIsInitialized............................................................................................................................74

DMMIsRelative...............................................................................................................................75

DMMLoadCalFile...........................................................................................................................75

DMMOpenPCI................................................................................................................................76

DMMOpenCalACCaps...................................................................................................................76

DMMOpenTerminalCal..................................................................................................................77

DMMPeriodStr ...............................................................................................................................78

DMMPolledRead ............................................................................................................................79

DMMPolledReadCmd.....................................................................................................................79

DMMPolledReadStr........................................................................................................................80

DMMRead.......................................................................................................................................81

DMMReadBuffer.............................................................................................................................82

DMMReadBufferStr........................................................................................................................83

DMMReadCJTemp .........................................................................................................................83

DMMReadCrestFactor ...................................................................................................................84

DMMReadDutyCycle......................................................................................................................85

DMMReadFrequency......................................................................................................................86

DMMReadFrequencyStr.................................................................................................................86

DMMReadInductorQ......................................................................................................................87

DMMReadMeasurement.................................................................................................................87

DMMReadMedian...........................................................................................................................88

DMMReadNorm..............................................................................................................................89

DMMReadPeakToPeak...................................................................................................................89

DMMReadPeriod............................................................................................................................90

DMMReadStr..................................................................................................................................90

DMMReadTotalizer ........................................................................................................................91

DMMReadWidth.............................................................................................................................92

DMMReady.....................................................................................................................................92

Signametrics 6

DMMSetACCapsDelay ...................................................................................................................93

DMMSetACCapsLevel....................................................................................................................93

DMMSetACVSource .......................................................................................................................94

DMMSetAutoRange ........................................................................................................................95

DMMSetBuffTrigRead ....................................................................................................................95

DMMSetCapsAveSamp...................................................................................................................96

DMMSetCJTemp.............................................................................................................................97

DMMSetCompThreshold ................................................................................................................98

DMMSetCounterRng.......................................................................................................................98

DMMSetDCISource........................................................................................................................99

DMMSetDCVSource.....................................................................................................................100

DMMSetExternalShunt.................................................................................................................101

DMMSetFuncRange......................................................................................................................101

DMMSetFunction..........................................................................................................................102

DMMSetInductFreq......................................................................................................................102

DMMSetOffsetOhms.....................................................................................................................103

DMMSetRange..............................................................................................................................104

DMMSetRate.................................................................................................................................104

DMMSetRelative...........................................................................................................................105

DMMSetResistance.......................................................................................................................105

DMMSetRTD ................................................................................................................................106

DMMSetSensoreParams...............................................................................................................107

DMMSetSourceMode....................................................................................................................107

DMMSetSynchronized...................................................................................................................108

DMMSetTCType ...........................................................................................................................109

DMMSetTempUnits.......................................................................................................................109

DMMSetTrigRead.........................................................................................................................110

DMMSetTrimDAC ........................................................................................................................111

DMMStartTotalizer.......................................................................................................................112

DMMStopTotalizer .......................................................................................................................112

DMMTerminate.............................................................................................................................113

DMMTrigger.................................................................................................................................114

DMMWidthStr...............................................................................................................................115

6.0 MAINTENANCE ..............................................................................................................................................116

6.1 PERFORMANCE TESTS ............................................................................................................................117

6.2 DC VOLTAGE TEST................................................................................................................................117

6.3 RESISTANCE TEST, 2-WIRE.....................................................................................................................118

6.4 RESISTANCE TEST, 4-WIRE.....................................................................................................................118

6.5 AC VOLTAGE TEST................................................................................................................................120

6.6 DC CURRENT TEST................................................................................................................................121

6.7 AC CURRENT TEST................................................................................................................................121

6.8 CAPACITANCE TEST (SMX2044 ONLY) .................................................................................................122

6.9 FREQUENCY COUNTER TEST (SMX2044 ONLY) ....................................................................................123

6.10 CALIBRATION.......................................................................................................................................124

7.0 WARRANTY AND SERVICE.........................................................................................................................125

8.0 ACCESSORIES.................................................................................................................................................125

1.0 Introduction

Congratulations! You have purchased a PXI/CompactPCI Plug-in instrument with analog and systems performance

that rivals the best, all-in-one box instruments. The SMX2040 series digital multimeters (DMMs) are easy to setup

and use, have sophisticated analog and digital circuitry to provide very repeatable measurements, and are protected

to handle any unexpected situations your measurement environment may encounter. To get years of reliable service

from these DMMs, please take a few moments and review this manual before installing and using this precision

instrument.

This manual describes the SMX2040 and SMX2044 DMMs. Each DMM delivers unmatched breakthrough

performance in a PXI and CompactPCI plug-in instrument. With a rich repertoire of functions, the SMX2040 series

out performs all other plug-in DMMs, including the trusted Signametrics SM-2020CT, and most brand named

bench top units.

Note: In this manual, all references to the "SMX2040" and “DMM” apply to the SMX2040 and SMX2044.

Features unique to the SMX2044 will be identified as such.

1.1 Safety Considerations

Safety Considerations

The SMX2040 series of DMMs is capable of measuring up to 300 VDC or 250 VAC across the Volt HI

and LO terminals, and can also measure common mode signals that "float" the DMM above EARTH

ground by up to 300 VDC or 250 VAC. When making common mode measurements, the majority of the

circuits inside the DMM are at the common mode voltage. These voltages can be lethal and can KILL!

During and after installing your DMM, check to see that there are no wires or ribbon cables from

your PXI/CompactPCI chassis trapped inside the DMM.

The DMM comes installed with two shields (bottom and top) that must not be removed for performance

as well as safety reasons. Removal of these shields and/or improper assembly of the shields can result in

lethal voltages occurring within your chassis. Also make sure the chassis is 3U in size.

Warning

Check to see that no loose wires or ribbon cables infringe upon any of the internal circuits of the

DMM, as this may apply measurement voltages to your computer, causing electrocution and/or

damage to your PXI/CompactPCI chassis !

To avoid shock hazard, install the DMM only into a 3U PXI and CompactPCI chassis that has its

power connector connected to a power receptacle with an earth safety ground.

When making any measurements above 50 VDC or 40 VAC, only use Safety Test Leads. Examples of

these are the Signametrics Basic Test Leads and Deluxe Test Leads, offered as an optional accessory with

the Signametrics DMMs. Do not use these units in a 6U chassis as an electrocution hazard will be

present.

7 Signametrics

Signametrics 8

1.2 Minimum Requirements

The SMX2040 series of system DMMs are precision plug-in modules that are compatible with 3U PXI or

CompactPCI chassis. The processor type must be a Pentium or equivalent processor running MS Windows. The

DMM requires a single PXI or CompactPCI slot. A mouse must be installed when controlling the DMM from the

Windows Control Panel. The SMX2040 comes with a Windows' DLL, for operation with Windows' Version

95/98/Me/2000/XP and NT4.0.

1.3 Feature Set

The base unit, the SMX2040, has 6-1/2 digit performance and can be used as a general purpose DMM, giving very

accurate and stable readings. The SMX2044 adds to the SMX2040 additional measurement functions not found in

other DMMs such as inductance measurement and sourcing capabilities.

SMX2040, 42, 44 6½ Digit DMMs feature table:

Function SMX2040

DMM SMX2042

Multi-Function

DMM

SMX2044 LCR

Sourcing DMM

DCV 4 ranges, >10 GΩ& 10 MΩinput

resistance. √√√

ACV 4 ranges, 1 MΩinput √√√

2-Wire Ohms, six ranges 330 Ωto 33 MΩ√plus 33 Ω,

330 MΩplus 33 Ω,

330 MΩ

4-Wire Ohms, four ranges 330 Ωto 330 kΩ√plus 33 Ωplus 33 Ωrange

Offset Ohms √√√

DC current, four ranges 3.3 mA to 2.5 A √√√

AC current, four ranges 3.3 mA to 2.5 A √√√

Diode V/I characteristics at 100 ηA to 1mA √plus 10 mA plus 10 mA

Auto range, Relative √√√

Min/Max, dB and percent deviation functions √√√

On board measurement buffer √√√

Measurement rate: 0.2 to 1,000/sec √√√

External and threshold trigger √√√

Thermocouples √√√

High Dynamic range; +3,300,000 counts √√√

PXI Trigger In/Out √√√

Capacitance, seven ranges, 10 nF to 10 mF √√

Temperature (five basic RTD types) √√

Frequency / Period measurement √√

Pulse width, pos./neg., & duty cycle √√

Totalizer/event counter √√

Variable threshold DAC; all timing measure. √√

Peak to Peak, Crest factor, Median √√

Internal DMM temperature sensor √√

Six wire Ohms (with force/sense) √

Inductance, six ranges 33 µH to 3.3 H

√

DCV source 0 to +/-10.0 V √

ACV source 0 to 20 V pk-pk, 2 Hz to 75 KHz √

DC current source, 1 nA to 12.5 mA √

Leakage measurement √

Synthesized resistance source √

Extended Resistance measurements √

In Circuit Capacitance √

9 Signametrics

2.0 Specifications

2.1 DC Voltage Measurement

Input Characteristics

• Input Resistance 330 mV & 3.3 V Ranges: >10 GΩ,

• Input Resistance 33 V & 330 V Ranges: 10.0 MΩ

Accuracy ± (% of reading + Volts) [1]

Range Full Scale

6 ½ Digits Resolution 24 hours

23°C ±1°C 90 Days

23°C ±5°C One Year 23°C

±5°C

330 mV 330.0000 mV 100 ηV 0.003 + 4.5 µV 0.004 + 5.5 µV 0.007 + 8 µV

3.3 V 3.300000 V 1 µV 0.002 + 10 µV 0.0025 + 12 µV 0.0045 + 17 µV

33 V 33.00000 V 10 µV 0.003 + 250 µV 0.004 + 280 µV 0.007 + 330 µV

330 V 330.0000 V 100 µV 0.004 + 1 mV 0.005 + 1.2 mV 0.008 + 1.5 mV

[1] With reading rate set to 10 readings per second (rps) or slower, and within one hour of DCV

zero, using Relative control.

DCV Noise Rejection Normal Mode Rejection, at 50, 60, or 400 Hz ± 0.5%, is better than 95 dB

for reading rates of 10 rps or lower. Common Mode Rejection (with 1 kΩlead imbalance) is better

than 120 dB for these conditions.

2.2 DC Current Measurement

Input Characteristics

• Burden Voltage < 350 mV for all ranges

• Protected with 2.5A fuse ( 5x20mm, 250 V Fast)

Accuracy ± (% of reading + Amps) [1]

Range Full Scale

5 ½ Digits Resolution 24 hours

23°C ±5°C 90 Days

23°C ±5°C One Year 23°C

±5°C

3.3 mA 3.30000 mA 10 ηA 0.052 + 200 ηA 0.07 + 350 ηA 0.1 + 400 ηA

33 mA 33.0000 mA 100 ηA 0.04 + 1 µA 0.06 + 2 µA 0.1 + 3 µA

330 mA 330.000 mA 1 µA 0.05 + 30 µA 0.055 + 40 µA 0.075 + 60 µA

2.5 A 2.50000 A 10 µA 0.55 + 50 µA 0.6 + 200 µA 0.65 + 350 µA

[1] With reading rate set to 10 rps or slower, and within one hour of DCI zero, using Relative control.

2.3 AC Voltage Measurements

Input Characteristics

• Input Resistance 1.0 MΩ, shunted by < 100 pF, all ranges

• Crest Factor 3 at Full Scale, increasing to 7 at Lowest Specified Voltage

• AC coupled Specified range: 10 Hz to 100 kHz

• Typical Settling time < 0.5 sec to within 0.1% of final value

2.3.1 AC Voltage True RMS Measurement

Range Full Scale 6 ½ Digits Lowest specified Voltage Resolution

330 mV 330.0000 mV 5 mV [1] 100 ηV

3.3 V 3.300000 V 10 mV 1 µV

33 V 33.00000 V 100 mV 10 µV

250 V [2] 250.0000 V 1 V 100 µV

[1] Between 5 mV and 10 mV, add 100 µV additional error to the accuracy table below. In many

computer installations, if the DMM is not near a noisy board, usable voltage measurements of 1 mV

can be obtained.

[2] Signal is limited to 8x106Volt Hz Product. For example, the largest frequency input at 250 V is

32 kHz, or 8x106Volt x Hz.

Signametrics 10

Accuracy ± (% of reading + Volts) [1]

Range Frequency 24 hours

23°C ±1°C 90 Days

23°C ±5°C One Year

23°C ±5°C

10 Hz - 20 Hz 3.0 + 350 µV 3.1 + 380 µV 3.2 + 430 µV

20 Hz - 47 Hz 0.92 + 150 µV 0.93 + 170 µV 0.95 + 200 µV

47 Hz - 10 kHz 0.13 + 100 µV 0.14 + 110 µV 0.15 + 120 µV

10 kHz - 50 kHz 0.55 + 160 µV 0.6 + 200 µV 0.63 + 230 µV

330 mV

50 kHz - 100 kHz 5.3 + 350 µV 5.4 + 370 µV 5.6 + 400 µV

10 Hz - 20 Hz 3.0 + 2 mV 3.1 + 2.2 mV 3.2 + 2.5 mV

20 Hz - 47 Hz 0.93 + 1.3 mV 0.96 + 1.5 mV 1.0 + 1.7 mV

47 Hz - 10 kHz 0.05 + 1 mV 0.055 + 1.1 mV 0.065 + 1.2 mV

10 kHz - 50 kHz 0.62 + 1.2 mV 0.65 + 1.3 mV 0.70 + 1.5 mV

3.3 V

50 kHz - 100 kHz 5.1 + 1.5 mV 5.2 + 1.7 mV 5.3 + 2 mV

10 Hz - 20 Hz 3.0 + 14 mV 3.1 + 16 mV 3.3 + 20 mV

20 Hz - 47 Hz 0.93 + 12 mV 0.96 + 14 mV 1.0 + 16 mV

47 Hz - 10 kHz 0.06 + 10 mV 0.065 + 11 mV 0.073 + 13 mV

10 kHz - 50 kHz 0.31 + 18 mV 0.33 + 21 mV 0.35 + 25 mV

33 V

50 kHz - 100 kHz 2.0 + 30 mV 2.2 + 35 mV 2.4 + 40 mV

10 Hz - 20 Hz 3.0 + 140 mV 3.1 + 160 mV 3.3 + 200 mV

20 Hz - 47 Hz 0.93 + 120 mV 0.96 + 130 mV 1.0 + 150 mV

47 Hz - 10 kHz 0.04 + 100 mV 0.045 + 110 mV 0.06 + 130 mV

10 kHz - 50 kHz 0.32 + 150 mV 0.4 + 170 mV 0.45 + 200 mV

250 V

50 kHz - 100 kHz 2.5 + 200 mV 2.8 + 240 mV 3.2 + 300 mV

ACV Noise Rejection Common Mode rejection, for 50 Hz or 60 Hz with 1 kΩimbalance in either lead, is better

than 60 dB.

2.3.2 AC Peak-to-Peak Measurement (SMX2044)

• Measures the peak-to-peak value of a repetitive waveform

ACV

Range Lowest specified

input voltage

(Vp-p)

Full Scale

reading (Vp-p) Resolution Typical Accuracy 23°C ±5°C

One Year [1]

330 mV 0.1 V 1.85 V 1 mV 1.5 ±10 mV

3.3 V 1.0 V 18.5 V 10 mV 1.4 ±70 mV

33 V 10 V 185.0 V 100 mV 1.0 ±700 mV

250 V 100 V 850.0 V 1 V 1.0 ± 6 V

[1] Specified from 30Hz to 10 kHz. Input signal frequency of 30 Hz to 30 kHz.

2.3.3 AC Crest Factor Measurement (SMX2044)

• Measures the crest factor (peak / RMS) of a repetitive waveform

ACV

Range Lowest specified

input voltage

(Vp-p)

Highest specified input

voltages (Vp-p) Resolution Typical Accuracy 23°C ±5°C

One Year [1]

330 mV 0.1 V 1.8 V 0.01 2.2 ±0.3

3.3 V 1.0 V 18 V 0.01 2.1 ±0.1

33 V 10 V 180 V 0.01 2.0 ±0.1

250 V 100 V 700 V 0.01 2.0 ±0.1

[1] Crest factor measurement requires signal frequency of 30 Hz to 30 kHz.

Autres manuels pour SMX2040

Ce manuel convient aux modèles suivants

Table des matières

Autres manuels Signametrics Multimètre

Signametrics

Signametrics SM2060 Manuel utilisateur

Signametrics

Signametrics SMX2040 Manuel utilisateur

Signametrics

Signametrics SMX2055 Manuel utilisateur

Manuels Multimètre populaires d'autres marques

Agilent Technologies

Agilent Technologies 34420A Manuel utilisateur

Fluke

Fluke 83 Manuel utilisateur

Hameg

Hameg HM 8012 Manuel utilisateur

Mastech

Mastech MY70 Manuel utilisateur

Steren

Steren MUL-300 Manuel utilisateur

Somogyi Elektronic

Somogyi Elektronic home SMA 92 Manuel utilisateur

Gossen MetraWatt

Gossen MetraWatt METRAmax 6 Manuel utilisateur

PeakTech

PeakTech 4000 Manuel d'utilisation et d'entretien

YOKOGAWA

YOKOGAWA 90050B Manuel utilisateur

Gossen MetraWatt

Gossen MetraWatt METRALINE DMM16 Manuel utilisateur

Fluke

Fluke 8846A Manuel d'utilisation et d'entretien

Tempo Communications

Tempo Communications MM200 Manuel utilisateur

Elenco Electronics

Elenco Electronics CM-1555 Manuel utilisateur

Mastech

Mastech MS8238C Manuel utilisateur

SDAR

SDAR 830A, 830B, 830D, 830C Manuel utilisateur

RS PRO

RS PRO RS-9519BT Manuel utilisateur

BGS technic

BGS technic 8890 Manuel utilisateur

Amprobe

Amprobe Hexagon 60 Manuel utilisateur