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Sourcetronic ST1952 User Manual

5 1/2 digit multimeter
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SOURCETRONIC − Quality electronics for service, lab and production
User Manual
5½ Digit Multimeter ST1952

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  • Page 1 SOURCETRONIC − Quality electronics for service, lab and production User Manual 5½ Digit Multimeter ST1952...
  • Page 2 ST1952 Operation Manual Manual Printing History The manual release data and version number indicate its current edition. The printing date changes when a new edition is released. The manual version number changes when extensive technical changes are incorporated. October 2015……………………………………………………………………………………………………………First Edition...

  • Page 3: Table Of Contents

    1.4 Safety symbols and Precautions ....................6 1.5 Incoming Inspection ........................6 1.6 Warranty ............................7 1.7 Limitation of Warranty ........................7 Chapter 2 ST1952 Overview ........................8 2.1 Brief introduction ........................... 8 2.2 Front Panel Summary ........................8 2.2.1 Annunciators on Screen ....................10 2.2.2 Front Panel Menu Reference ....................
  • Page 4 ST1952 Operation Manual 4.2.1 Trigger procedure ......................29 4.2.2 Measurement Sample ...................... 30 4.2.3 Reading Hold ........................30 4.2.4 External trigger ......................... 30 4.3 Limit Operations .......................... 30 4.4 System Operations ........................31 4.4.1 Beeper Control ........................31 4.4.2 Key Sound ........................32 4.4.3 Display ..........................

  • Page 5: Chapter 1 General Information

    Feature Overview The ST1952 is a 5½ digital multimeter with high accuracy, stability and speed. The digital multimeter provides a maximum measurement speed of 200 readings/sec. ST1952 has a 0.012% DC voltage basic accuracy, 0.05% basic resistance accuracy and other high performance features.

  • Page 6: Dimensions And Weight

    Such damage may invalidate the warranty. Incoming Inspection The ST1952 was carefully inspected mechanically and electrically before shipment. After unpacking all items from the shipping carton, please check for any obvious signs of physical damage that may have occurred during transportation.

  • Page 7: Warranty

    ST1952 Operation Manual Warranty Sourcetronic warrants this product to be free from defects in material and workmanship for a period of 1 year from the date of shipment. During the warranty period, we will, at our discretion, either repair or replace any product that proves to be defective.

  • Page 8: Chapter 2 St1952 Overview

    Limit test with HI/LO signal can help you select good products  Front Panel Summary The front panel of the ST1952 is shown in Figure 2-1. This figure includes some important abbreviated information that should be reviewed before operating the instrument.
  • Page 9 ST1952 Operation Manual Primary display Math function keys Function keys Test terminal Current Input fuse Speed Range Enter Switch Trig/Hold key Menu operation Secondary Direction Shift/local key display display key Figure 2-1 ST1952 Front Panel Function keys Select measurement function: DC voltage (DCV) / DC current (DCI), AC voltage (ACV) / AC current (ACI), resistance (Ω) / continuity ( ) / diode (...

  • Page 10: Annunciators On Screen

    ST1952 Operation Manual Select 4½ digit display. Shift Select 5½ digit display. Shift Menu operation keys Open/Close menu → Shift Move through selections within menu level, command level or parameter level Move through selections within menu level, command level or parameter level.

  • Page 11: Front Panel Menu Reference

    ST1952 Operation Manual 2.2.2 Front Panel Menu Reference A: MATH MENU 1: HI LIMIT Set the high limit for limit testing 2: LO LIMIT Set the low limit for limit testing 3: PERC REF Set the reference value for PERCENT function...

  • Page 12: Front Panel Menu Overview

    ST1952 Operation Manual 2.2.3 Front Panel Menu Overview The menu is organized in a top-down tree structure with three levels (menus, commands and parameters) as shown in Figure 2-3. You can use down ( ) or up ( ) to move menu tree from one level to another.

  • Page 13: Rear Panel Summary

    ST1952 Operation Manual Rear Panel Summary The rear panel of ST1952 is shown in Figure 2-4. This section includes important information that should be reviewed before operating the instrument. Figure 2-4 ST1952 Rear Panel 1. HANDLER interface Use a standard DB-9 hole-type connector. Use external signal to trigger test 2.

  • Page 14: Power Up

    2.4.1 Power Line Connection Follow the procedure below to connect the ST1952 to line power and turn on the instrument. Check to make sure that the line voltage is in the range of 110V/220V±10% and line frequency is in the range of 50Hz/ 60Hz±5% before connecting the power cord.

  • Page 15: High Energy Circuit Safety Precautions

    500V peak. Exceeding this value may cause a breakdown in insulation, creating a shock hazard. 2.4.4 Power-on Defaults Model ST1952 uses the factory default settings for the power-on settings. Since the basic measurement procedures in this manual assume the factory defaults, reset the...
  • Page 16 ST1952 Operation Manual instrument to the factory settings when following step-by-step procedures. Table below lists the factory default settings. Setting Factory Default Function Range Auto Range Rate FAST Remote/Local Local Digits 5½ Trigger Mode Immediate Relative Mode Compare Mode Hi Limit...

  • Page 17: Chapter 3 Basic Measurements

    ST1952 Operation Manual Chapter 3 Basic Measurements Preparation One of the first things you would like to do with your multimeter is to become acquainted with its front panel. We have provided some exercises in foregoing chapters about preparations for use and operations of front panel.

  • Page 18: Measuring Current

    RMS value. Waveform Crest factor CF AC RMS AC+DC RMS Table 3-1 Crest factors of some AC signal waveforms Measuring Current Model ST1952 current measurement ranges are: 1mA, 10mA, 100mA, 1A, 10A Maximum resolution: 10nA (on 1mA range)
  • Page 19 ST1952 Operation Manual Select the desired measurement function. select select ACI+DCI select NOTE: is effective when the current measurement function is current measurement. Connection manner If the current is less than 120mA, connect test leads to the sources as shown in Figure 3-2.

  • Page 20: Measuring Resistance

    Table 3-2 Sampling resistance by current measurement range Crest factor Refer to the crest factor of voltage. Measuring Resistance Model ST1952 resistance measurement ranges are: 100Ω, 1kΩ, 10kΩ, 100kΩ, 1MΩ, 10MΩ, 100MΩ; Maximum resolution: 1mΩ (on 100Ω range) 1. Select the desired measurement function. select 2.

  • Page 21: Measuring Continuity

    ST1952 Operation Manual Measuring Continuity  Connection manner Connect test leads to the sources the same as resistance measurement connections.  Entering to the measurement function If the current test function is DCR measurement, press If the current test function is not DCR measurement, press two times.

  • Page 22: Measuring Frequency

    The capacitance measurement ranges from 1nF to 10000µF with the maximum resolution ratio up to 1pF. ST1952 adopts DC constant current charge test. The capacitance is calculated by measuring the voltage change (△V) in an extremely short time (△t). The measurement period includes two sections: charging stage and discharging stage.

  • Page 23: Dbm Calculation

    1mW reference. With user-programmable reference impedance, Model ST1952 reads 0dBm when the voltage needed to dissipate 1mW through the reference impedance is applied. The relationship between dBm, reference impedance, and the voltage...

  • Page 24: Percent

    ST1952 Operation Manual Method 2: Press to enter into the menu setup interface. Shift keys to select the menu A:MATH MEU. key to enter into the next level menu and then use to select 5:dBm REF. key to enter into the parameter setup interface. Factory setting: 75Ω.

  • Page 25: Mx+B

    ST1952 Operation Manual 5. Use keys to enter the data. Use key to save the data and press key to cancel the current data. 6. Press for percent math operation and the present percent value is displayed in the Shift primary display and the current measurement result is displayed in the secondary display.
  • Page 26 ST1952 Operation Manual When enabling Min/Max operation, press key, the Max, Min, Avg and Num value will be displayed in the secondary display. The count value is displayed as integer before the maximum display is reaching 120000. Otherwise, the scientific notation format is displayed.

  • Page 27: Chapter 4 Measurement Options

    ST1952 Operation Manual Chapter 4 Measurement Options This chapter provides more in-depth description of features of ST1952. This chapter is organized as follows: Measurement Configuration – Describes Range, Relative readings, Digits of Resolution and  Measurement rate Triggering operations – Explains trigger sources ...

  • Page 28: Relative Operation

    The relative operation could be used to null offsets or subtract a baseline reading from present and future readings. When relative function is enabled, Model ST1952 uses the present reading as a relative value. Subsequent readings will be the difference between the actual input value and the relative value.

  • Page 29: Trigger Operations

    Event detection is satisfied for both kinds of triggers as below: 1. A bus trigger (*TRG) command is received. 2. The front panel key is pressed (ST1952 must be taken out of remote before it will Trig respond to key).

  • Page 30: Measurement Sample

    ST1952 Operation Manual 4. Using to select IMM, MAN, BUS or EXT trigger source and press to save the setup. 4.2.2 Measurement Sample The primary measurement sample action is a measurement. However, the measurement sample action block could include the following additional actions: Hold —...

  • Page 31: System Operations

    System Operations This section describes some other operations of Model ST1952. 4.4.1 Beeper Control Normally, the multimeter will emit a tone whenever certain conditions are met. For example: the multimeter will beep when a stable reading is captured in reading hold.

  • Page 32: Key Sound

    4.4.2 Key Sound To avoid mis-operation, Model ST1952 has key sound function and you can enable or disable it. Factory default setting is enabled. The key sound state is stored in non-volatile memory and does not change when power has been off of after a reset.

  • Page 33: Chapter 5 Remote Operation

    ST1952’s serial port uses the transmit (TXD), receive (RXD), and signal ground (GND) lines of the RS232 standard. It does not use the hardware handshaking lines CTS and RTS. ST1952 only uses the smallest subset of the RS232C standard, the signal are listed in Table 5-2.

  • Page 34: Rs-232 Interface Operation

    Pin 4 and 6, pin 7 and 8 are shorted respectively at the end of controller. B. Sending and receiving data Model ST1952 transfers data using 8 data bits, 1 stop bit, and no parity. Each program message that is transmitted to the controller is terminated with <LF>.
  • Page 35 Before you choose a baud rate, make sure the programming terminal that you are connecting to the ST1952 can support the baud rate you selected. Both the multimeter and the other device must be configured for the same baud rate.

  • Page 36: Usb Interface

    The instrument is communicating through USB simulated Virtual Serial Port. Before using it, please install the driver on the PC. Also, the baud rate needs to be set in the driver. Handler Interface For convenience of industrial manufacture, ST1952 is provided with Handler interface. The interface definition is as follows:...
  • Page 37 ST1952 Operation Manual Signal Code External trigger signal START Sorting signal 1 Sorting signal 2 Sorting signal 3 Fail signal FALL Measurement end signal Internal voltage IN_VCC External ground EXT_GND External power EXT_VCC Handler is mainly used under Limit function. Each signal is described as follows:...
  • Page 38 ST1952 Operation Manual START signal: Low level valid pulse signal can trigger the multimeter. If using this signal to trigger, the trigger mode must be set as EXT. The time width of low level should not be less than 2μs.

  • Page 39: Chapter 6 Scpi Command Reference

    SCPI Command Reference Command structure ST1952 command system adopts SCPI commands. The SCPI commands are tree structured three levels deep. (The highest level commands are called the subsystem 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.
  • Page 40 ST1952 Operation Manual These brackets indicate that :UPPer is optional and does not have to be used. Thus, the above command can be sent in one of the two ways below: :RANGe <n> :RANGe:UPPer <n> NOTICE: When using optional command words in your program, do not include the brackets.

  • Page 41: Short-Form Rules

    ST1952 Operation Manual :CURRent[:DC]:NPLCycles 1 :CURRent[:DC]:NPLCycles DEFault :CURRent[:DC]:NPLCycles MINimum :CURRent[:DC]:NPLCycles MAXimum :CURRent[:DC]:NPLCycles PLAC4 :CURRent[:DC]:NPLCycles PLAC5 6.2.2 Short-form Rules Use the following rules to determine the short-form version of any SCPI command: If the length of the command word is four letters or less, no short form version exists. Example: ...

  • Page 42: Multiple Command Rules

    ●TRIGer ●FETCh ●CAPacitance ●SPEED ●RETURN Model ST1952 supports following common commands: ◆ *RST ◆ *TRG ◆ *IDN 6.3.1 DISPlay subsystem The DISPlay subsystem commands are mainly used to control the display of the ST1952. and are summarized in Table 6-1.
  • Page 43 ST1952 Operation Manual Table 6-1 DISPlay Subsystem Commands Summary Command Function Description :DISPlay Display control command :ENABle <b> Enable or disable front panel dispaly :ENABle? Query state of the display :DISPlay :ENABle <b> Command syntax: :DISPlay:ENABle <b> Command Parameter: <b> =...

  • Page 44: Function Subsystem

    ST1952 Operation Manual 6.3.2 FUNCtion subsystem The commands in this subsystem are used to configure the measurement function subsystems and are summarized in Table 6-2. Table 6-2 FUNCtion Subsystem Commands Summary Command Command Description Select measurement function: ‘VOLTage:AC’, ‘VOLTage:DC’, :FUNCtion <name>...

  • Page 45: Function2 Subsystem

    ST1952 Operation Manual 6.3.3 FUNCtion2 subsystem The commands in this subsystem are used to configure the second measurement function subsystems and are summarized in Table 6-3. Table 6-3 FUNCtion 2 Subsystem Commands Summary Command Command Description Select measurement function: ‘VOLTage:AC’, ‘VOLTage:DC’, :FUNCtion 2 <name>...

  • Page 46: Calculate Subsystem

    ST1952 Operation Manual Command parameter: <name> = Set the measurement units as V Set the measurement units as dB Set the measurement units as dBm Query: :UNIT? Query the current measurement units NOTE: this command is only valid when in DCV, ACV, AC+DC, V function measurement.
  • Page 47 ST1952 Operation Manual :STATe? Query state of limit test :FAIL? Query test result (1=pass, 0=fail) :CALCulate[1] Use these commands to configure and control MXB and percent math calculations. :FORMat <name> Command syntax: :CALCulate[1]:FORMat <name> Command Parameter: <name> = NONE No calculations...
  • Page 48 ST1952 Operation Manual Query: :MBFactor? Query “b” factor Description: This command is used to define the “b” factor for the mx+b calculation. :PERCent <NRf> Command syntax: :CALCulate[1]:KMATh:PERCent <NRf> Command Parameter: <NRf> = -1e6 to1e6 Specify target value. Query: :PERCent? Query percent target value Description: This command is used to specify the target value for the percent calculation.
  • Page 49 ST1952 Operation Manual Description: This query command is used to read the result of the CALC1 calculation. If CALC1 is disabled or NONE is selected, the “raw” reading will be read. :CALCulate2 These commands are used to configure and control the CALC2 operations on readings stored in the buffer.
  • Page 50 ST1952 Operation Manual :DATA? Command syntax: :CALCulate2:DATA? Description: This query command is used to read the result of the CALC2 calculation. If CALC2 is disabled or NONE is selected, the “raw” reading will be read. :CALCulate3 These commands are used to configure and control the CALC3 limit test.

  • Page 51: Voltage Subsystem

    ST1952 Operation Manual Description: This command is used to enable or disable the LIMIT test. When enabled, the limit test will be performed. :FAIL? Command syntax: :CALCulate3:LIMit[1]:FAIL? Description: This command is used to read the results of the LIMIT1 test...
  • Page 52 ST1952 Operation Manual :VOLTage:AC Path to configure AC voltage :NPLCycles <n> Set the test speed and display digits SLOW :NPLCycles? Query line cycle integration rate :RANGe Path to set measurement range [:UPPer] <n〉 Select range (0 to 757.5) 757.5 [:UPPer]? Query range :AUTO <b>...
  • Page 53 ST1952 Operation Manual Command Parameter: <n> = (0.1,1,10,100,750) V (0.1,1,10,100,1000)V DEFault 0.1 (ACV) 0.1 (DCV) MINimum MAXimum 750(ACV) 1000(DCV) Query: :RANGe[:UPPer]? Query measurement range of the current function. Description: This command is used to manually select the measurement range for the specified measurement function.
  • Page 54 ST1952 Operation Manual Command parameter: <n> = -757.5 to 757.5 Reference for ACV -1010 to 1010 Reference for DCV DEFault 0 (All measurement functions) MINimum Mininum value for specified 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 function.
  • Page 55 ST1952 Operation Manual :VOLTage:DC:REFerence:ACQuire Acquire reference for DCV Description: When one of these commands is sent, the measurement input signal is acquired and established as the reference value. This command is typically used to zero the display. For example, if the instrument is displaying a 1μV offset, sending this command and enabling Reference zeroes the...

  • Page 56: Current Subsystem

    ST1952 Operation Manual 6.3.7 CURRent subsystem The commands in this subsystem are used to configure and control current measurement function and are summarized in Table 6-7. Table 6-7 CURRent Subsystem Commands Summary Command Function Description Default :CURRent:DC Path to configure DC current :NPLCycles <n>...
  • Page 57 ST1952 Operation Manual DEFault SLOW SLOW Set the test speed as SLOW FAST Set the test speed as FAST PLAC4 Set the display digits as 4½ PLAC5 Set the display digits as 5½ Query: :NPLCycles? Query the current test speed...
  • Page 58 ST1952 Operation Manual Description: These command are used to control auto ranging. With auto ranging enabled, the instrument automatically goes to the most sensitive range to perform the measurement. The auto range command (:RANGe:AUTO) is coupled to the command that manually selects the measurement range (:RANGe <n>).
  • Page 59 ST1952 Operation Manual : CURRent:DC:REFerence:STATe <b> Control reference for DCI Command parameter: <b> = 1 or ON Enable reference 0 or OFF Disable reference Query: :STATe? Query state of reference. Description: These commands are used to enable or disable Reference for the specified function.

  • Page 60: Resiister Subsystem

    ST1952 Operation Manual 6.3.8 RESIister subsystem The commands in this subsystem are used to configure and control resistance measurement function and are summarized in Table 6-8. Table 6-8 RESIister Subsystem Commands Summary Command Function Description Default :RESistance Path to configure resistance :NPLCycles <n>...
  • Page 61 ST1952 Operation Manual :RANGe Commands :[UPPer] <n> Command syntax: :RESistance:RANGe[:UPPer] <n> Set measurement range for Ω Command Parameter: <n> = (100,1k,10k,100k,1M,10M,100M) Ω Expected reading is ohms DEFault 100 (Ω) MINimum MAXimum 100M Query: :RANGe[:UPPer]? Query measurement range of the current function.
  • Page 62 ST1952 Operation Manual :RESistance:REFerence <n> Specify reference for Ω Command parameter: <n> = 0~10e6 Reference for Ω DEFault MINimum Mininum value for specified 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 function. When reference...

  • Page 63: Frequency And Period Subsystem

    ST1952 Operation Manual the reference value. This command is typically used to zero the display. For example, if the instrument is displaying a 0.1Ω offset, sending this command and enabling Reference zeroes the display. This command is functional only if the instrument is on the specified measurement function.
  • Page 64 ST1952 Operation Manual :REFerence <n> Commands :REFerence <n> Command syntax: :FREQuency:REFerence <n> Specify reference for FREQ Command parameter: <n> = 0 to 1.0e6 Reference for FREQ DEFault 0 (All measurement functions) MINimum Mininum value for specified function MAXimum Maximum value for specified function...

  • Page 65: Capacitance Subsystem

    ST1952 Operation Manual :ACQuire Command syntax: :FREQuency:REFerence:ACQuire Acquire reference for FREQ Description: When one of these commands is sent, the measurement input signal is acquired and established as the reference value. This command is typically used to zero the display. For example, if the instrument is displaying a 10Hz offset, sending this command and enabling Reference zeroes the display.
  • Page 66 ST1952 Operation Manual :RANGe Commands :[UPPer] <n> Command syntax: :CAPacitance:RANGe[:UPPer] <n> Set measurement range for capacitance Command Parameter: <n> = 1n,10n,100n,1u,10u,100u,1000u,10000u) Expected reading is F DEFault MINimum MAXimum 10000µF Query: :RANGe[:UPPer]? Query measurement range of the current function. Description: This command is used to manually select the measurement range for the specified measurement function.
  • Page 67 ST1952 Operation Manual :CAPacitance:REFerence <n> Specify reference for capacitance Command parameter: <n> = 0~10000uF Reference for capacitance DEFault MINimum Mininum value for specified 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 function. When reference...

  • Page 68: Hold Subsystem

    ST1952 Operation Manual the reference value. This command is typically used to zero the display. For example, if the instrument is displaying a 0.1Ω offset, sending this command and enabling Reference zeroes the display. This command is functional only if the instrument is on the specified measurement function.

  • Page 69: Trigger Subsystem

    ST1952 Operation Manual Query: :COUNt? Query HOLD count. Descripton: This command is used to specify the count for HOLD. COUNt is the number of readings that are compared to the “seed” reading during the HOLD process. :STATe <b> Command syntax: :HOLD:STATe <b>...

  • Page 70: Fetch Subsystem

    ST1952 Operation Manual Triggered by Handler inetreface Query: :SOURce? Query control source Description: These are used to select the event control source. 6.3.13 FETCH Subsystem FETCh? Command Command syntax: :FETCh? Description: This query command is used to obtain the lastest post-processed reading. This command does not affect the configuration of the instrument.

  • Page 71: Common Commands

    ST1952 Operation Manual confirm whether the function is ON. 6.3.16 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 Description:...
  • Page 72 SOURCETRONIC GMBH Fahrenheitstrasse 1 28359 Bremen Germany T +49 421 2 77 99 99 F +49 421 2 77 99 98 info@sourcetronic.com www.sourcetronic.com skype: sourcetronic www.sourcetronic.com...

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