Scientific SM6025 User Manual
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Scientific SM6025 User Manual

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LCR Meter SM6025
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  • Page 1 LCR Meter SM6025 User Manual...
  • Page 2 Information in this manual supercede all corresponding previous released material. Scientific continues to improve products and reserves rights to amend part or all of the specifications, procedures, equipment at any time without notice. Rev 1.00/ 0815 Scientific Mes-Technik Pvt.

  • Page 3: Table Of Contents

    LCR Meter SM6025 Table of Contents Introduction........................... 1.1 Technical Specifications ...................... 1.2 First time operation ...................... 1.3 Power connection......................... 1.4 Fuse ............................. 1.5 Environment ......................... 1.6 Use of Test Fixture ....................... 1.7 Warm-up ..........................Panel Controls ........................2.1 Front panel Controls ......................
  • Page 4 5.1.2 Point-frequency correction....................5.2 Correct connection of DUT..................... 5.3 Eliminate the influence of stray impedance ................5.4 Operation example for testing inductance with SM6025 A ............ 5.5 Operation example of testing capacitance by multi-frequency list sweep…………….... 5.6 Transformer Measurement...................... 5.6.1 Primary and secondary inductance L2A, L2B ..............
  • Page 5 6.6.8 Accuracy of L ......................6.6.9 Accuracy of Z ......................6.6.10 Accuracy of DCR ...................... Command Reference ...................... 7.1 Subsystem commands for SM6025 ................7.1.1 MEASlay subsystem commands ................7.1.2 FREQuency subsystem commands................7.1.3 VOLTage subsystem commands................. 7.1.4 CURRent subsystem commands ................

  • Page 6: Introduction

    LCR Meter SM6025 SM6025 Basic accuracy: 0.05% Maximum test frequency of 300kHz Resolution of 10 mHz Balance test function Transformer parameter test function Maximum test speed: 13 ms/time Automatic level control (ALC) function for V and I Test signal level monitor function for V and I...

  • Page 7: Technical Specifications

    30 W , 50 W & 100 W selectable Source Impedance (DCR) 30 W , 50 W & 100 W selectable Measuring time (> 10 kHz) Fast : 13 ms/time, Med : 67 ms/time, Slow : 187 ms/time Plus the refresh time of display character User Manual SM6025...
  • Page 8 230 V + 10 % , 50 Hz AC Power Consumption Max. 80 VA Dimensions (WxHxD) 325 x 90 x 370 mm , 370 x 108 x 410 mm (with handle & sheath) Weight Approx. 5.7 kg (subject to change without notice) User Manual SM6025...

  • Page 9: First Time Operation

    Please use the accessory test fixture or cable, the test fixture made by user or from other company may cause the incorrect measurement result. The test fixture or cable should be kept clean, as well as the pin of DUT, thus to guarantee the good connection between DUT and fixture. User Manual SM6025...

  • Page 10: Warm-Up

    Note: When test fixture or cable has not being installed, the instrument will display an unstable test result. Warm-up 1) To guarantee the accurate measurement, the warm-up time is no less than 15min. 2) Please not turn on or off instrument frequently, in order to avoid the inner data fluster. User Manual SM6025...

  • Page 11: Panel Controls

    Six soft keys are used to select parameters. The corresponding function of each soft key has been displayed on its left (the right part of LCD). The function definition varies with different pages. 18) LOG This key can record the measurement data automatically after User Manual SM6025...

  • Page 12: Rear Panel Controls

    24) [DC SOURCE] This key is reserved for future use of extension. 2.2 Rear Panel Controls Figure 2-2 shows the rear panel of SM6025 1) LAN interface LAN interface is used to realize the control and the communication of network system.

  • Page 13: Display Zone

    Be sure that the direction of fuse is accordant with power-supply voltage range before charging. 2.3 Display zone SM6025 applies a 65k, 4.3-inch TFT display. The display screen is divided into the following zones: Fig 2-3 Display Zones 1) Display page name Indicate the name of the currently displayed page.

  • Page 14: Setup]

    L, zero line N, ground line E should be the same as that of the instrument. Press the power switch at the left corner on the front panel and then a boot screen will appear which displays our company logo, instrument model (SM6025), and the version number of the software (Ver 1.00). User Manual SM6025...

  • Page 15: Measurement Control

    The test result/ condition display zone shows the information about test condition. These conditions can be set on <MEAS SETUP> page or <CORR> page. Signal source voltage/ current monitor (Vm, Im) Open, short, load correction ON/OFF status (CORR) User Manual SM6025...

  • Page 16: Test Function

    3.1.1 Test function In a measurement period, SM6025 can test two parameters for an impedance component: one primary parameter and one secondary parameter. Parameters that can be tested are as follows: Primary parameter |Z| (Module of impedance) |Y| (Module of admittance)
  • Page 17 Ls-Rs ← Press the soft key corresponding to your desired parameter. Then press ← to return to upper soft key menu. 6) Press ↓, another group of soft keys will be shown. Z—…→ Y—…→ R—…→ ↑ ↓ User Manual SM6025...
  • Page 18 10) Press ↓, the following parameters will be shown for your choice. L2A—…→ L2B —…→ ↑ 11) Press G-B, choose the desired parameter. 12) Press DCR, choose the desired parameter. 13) Press L2A-…→, the following parameters will be shown for your choice. L2A-N L2A-1/N L2A-M L2A-R2 ← User Manual SM6025...

  • Page 19: Test Range

    0.01Hz. When the test function is set as DCR, the FREQ zone will display “---”. Operation steps for setting test frequency: SM6025 provides two methods to set measurement frequency. The first one is to use soft keys and the other one is to input data by using numeric keys.

  • Page 20: Test Level

    Information. Operation steps for setting test level : SM6025 provides two methods to set the level of test signal source. The first one is to use soft keys, while the second one is to input data by numeric keys. 1) Move the cursor to LEVEL, the following soft keys will be displayed.

  • Page 21: Dc Bias

    DCR, the bias zone will display “---”. Operation steps for setting DC bias : SM6025 provides two methods to set the DC bias. The first one is to use soft keys, while the second one is to input data by numeric keys.

  • Page 22: Tools

    3.1.7 Tools The test result of SM6025 is displayed as 6 floating-point digits. Decimal point lock function can make SM6025 output the test result in fixed way. Meanwhile this function can change the displayed count of test result. This displayed result can be selected to be shown in large character or small character.

  • Page 23: Comparator Function

    Comparator function SM6025 has an inserted compare function which can divide DUT to up to 10 bins (from BIN1 to BIN9 and BIN OUT). Users can set 9 pairs of primary parameter limit and one pair of secondary bin limit. If the primary parameter of DUT is within the range of the bin limit but the secondary parameter is outside of the bin limit, the DUT will be sorted into the auxiliary bin.

  • Page 24: Param

    4) Press the soft key RESET, “☺ : Reset count, Sure?” will be displayed in the help zone. Then the following soft keys will be displayed. 5) Press the soft key YES to reset all bin counts to 0. 6) Press the soft key NO to cancel the reset operation. User Manual SM6025...

  • Page 25: List Sweep Disp

    The list sweep function of SM6025 can make automatic sweep test for up to 10 points’ test frequencies, test levels or DC bias. Two sweep modes are available on SM6025 : SEQ and STEP. In SEQ mode, each press of [TRIGGER] will direct SM6025 to automatically test all list sweep test points. In STEP mode, each press of [TRIGGER] will direct SM6025 to test one list sweep point.

  • Page 26: Freq (Hz)

    Auto Level Control (ALC) Delay Time (DELAY) Output Resistance (Rsou.) Average times (AVG) Voltage Level Monitor ON/ OFF (Vm) Current Level Monitor ON/ OFF (Im) Bias Current Isolation ON/ OFF (ISO) Deviation Test Mode A (DEV A) User Manual SM6025...

  • Page 27: Trigger Mode

    TRIGGER command, SM6025 will execute a test. The BUS mode cannot be set on the front panel. —————————————————————————————————————————————— Note: In the process of testing, when SM6025 receives a trigger signal, it will be ignored. So the trigger signal should be sent after the test is done. When optional HANDLER interface triggers SM6025 , the trigger mode is set as EXT.

  • Page 28: Bias Current Isolation Function

    Operation steps for setting test average times. 1) Move the cursor to the AVG zone, the following soft keys are displayed. ↑（+） This key is used to increase the average times. ↓（-） This key is used to decrease the average times. User Manual SM6025...

  • Page 29: Level Monitor Function

    3.5.6 Delay time SM6025 trigger delay means the delay time from triggering to test-start. Delay function can set the trigger delay time. When the list sweep test function is used, all set delay time will be delayed at each sweep test point. The range of the trigger delay time can be set from 0s to 60s with 1ms as the resolution.

  • Page 30: Deviation Test Function

    MEAS When the reference component is connected with the test terminal, you should press MEAS. Then SM6025 will test the reference component and the test result will be automatically input as the value of REF A. 2) Use MEAS or numeric keys to input the reference value of primary parameter.

  • Page 31: Correction

    MEAS When the reference component is connected to the test terminal, you should press MEAS. Then SM6025 will test the reference component and the test result will be automatically input as the value of REF B. 4) Use MEAS or numeric keys to input the reference value of the secondary parameter. If the reference values of primary and secondary parameters have been set in steps 2), you can skip this step.

  • Page 32: Open

    IEEE 488 interface. 3.6.1 OPEN The open correction function of SM6025 can eliminate the error caused by the stray admittance (G, B) parallel-connected with DUT, shown as figure 3-1. Figure 3-1 Stray Admittance...

  • Page 33: Short

    Figure 3-2 Spurious Inductance SM6025 adopts two kinds of short correction data. No matter what the current frequency is, SM6025 will execute short correction test on the 42 fixed frequency points. Except the 42 frequencies, the instrument will adopt embedding algorithm to calculate the short correction data of different test frequencies which correspond to different ranges.

  • Page 34: Load

    By using transport coefficient between the real test value and the standard reference value at the preset frequency (FREQ 1 or FREQ 2), the load correction of SM6025 can eliminate the test error. It is obvious that open, short, and load correction can be performed at preset frequencies. The 2 preset frequencies can be set in the setup zones of FREQ 1 and FREQ 2.
  • Page 35 The test parameters of reference value should conform with the preset load correction test function. Load correction function adopts the transport coefficient between the real test value of preset frequency and the standard reference value to eliminate the test error. Load correction function is only available for calculating transport coefficient. User Manual SM6025...

  • Page 36: Cable Length Selection

    OUT). If the primary parameter of DUT is within the limit range from BIN1 to BIN9, but the secondary parameter is out of the limit range, in this case the DUT will be sorted into aux bin. When SM6025 installs the HANDLER interface and it is used in automatic sorting system, the compare function will be especially useful.

  • Page 37: Limit Modes Of Compare Function

    Operation steps for setting the limit mode of the compare function : 1) Move the cursor to the MODE zone, the following soft keys will be displayed. %TOL This soft key is used to set the limit mode as the tolerance mode of percentage deviation (% TOL). User Manual SM6025...

  • Page 38: Set Nominal Value Of Tolerance Mode

    BIN 1 to BIN 9, but the secondary parameter is out of the limit range, in this case the DUT will be sorted into aux bin. When SM6025 installs the HANDLER interface and it is used in the automatic sorting system, the compare function will be especially useful.

  • Page 39: High/Low

    3.7.6 HIGH/LOW SM6025 can set bin limits of 9 primary parameters and one secondary parameter. The test results can be sorted into 10 bins at most (BIN 1 to BIN 9 and BIN OUT). The high/low limits of primary parameters can be set in high limit and low limit of bins from BIN 1 to BIN 9.

  • Page 40: List Sweep Setup

    Press [SETUP] and then LIST SWEEP to enter into the <LIST SWEEP SETUP> page as shown below. The list sweep function of SM6025 can perform auto sweep test for the test frequency, test level or bias voltage of 10 points. On <LIST SWEEP SETUP> page, the following list sweep parameters can be set.

  • Page 41: Sweep Parameter Setup

    This soft key is used to select high and short beep. LOW LONG This soft key is used to select low and long beep. TWO SHORT This soft key is used to select two low and short beeps. User Manual SM6025...

  • Page 42: Fail Beep

    Press MODIFY to input a new password. After inputting, the prompt information will appear on the screen to prompt you to confirm the new password. Input the new password again till the modification finishes. ———————————————————————————————————————————— Note: The default password is 2827. ———————————————————————————————————————————— User Manual SM6025...

  • Page 43: Bus Mode (Reserved Function)

    The standard DC bias voltage source is from -10V to +10V and the DC bias current source is from 0 to 100mA. —————————————————————————————————————————————— NOTE: When the DC bias source is in use, only the output impedance of 100 can be used. —————————————————————————————————————————————— User Manual SM6025...

  • Page 44: Baud Rate

    4.2 LCR <FILE MANAGE> SM6025 series instrument can save the user-set parameter to the nonvolatile memory in the form of file, so when use the same setting next time user can load a corresponding file to obtain the parameter set and used last time.

  • Page 45: U-Disk Manage Performance

    4.2.2 U-disk manage performance As described above, SM6025 has a standard configuration of USB HOST interface, so the external U-disk can be used as the memory media. In this condition, it breaks the memory limit of 40 groups of *.LCR files. Meanwhile those files can be copied to IBM PC or compatible desk-top computer, laptop with USB interface to reach the infinite extension.

  • Page 46: Operation Steps For File Management

    5) Press No to cancel the current save operation and return step 2. 6) Press Yes, and “☺：Input LCR file name：” will be displayed. 7) Use numeric keys to input the current file name and press [ENTER]. Then SM6025 will save the control and setting parameters as a file in this name.

  • Page 47: Execute Lcr Operation And Some Examples

    Press the menu key [SETUP] and then CORRECTION, then instrument will display the <CORRECTION> function. b) Move the cursor to the Open zone, ON, OFF and MEAS OPEN will be displayed in the soft key zone. User Manual SM6025...

  • Page 48: Correct Connection Of Dut

    3. Short and open must be available between contact points. Open and short correction can easily reduce the influence of distribution impedance of the test fixture on measurement. For open correction, the clearance between test terminals should be the same with that when they connects with DUT. For User Manual SM6025...

  • Page 49: Eliminate The Influence Of Stray Impedance

    When the DUT is low impedance (such as small inductance, large capacitance), a large current will flow through test leads Hc and Lc. In this case, electromagnetic coupling between test leads becomes the main source of test errors except the influence of the contact resistance on test terminals. If this User Manual SM6025...

  • Page 50: Operation Example For Testing Inductance With Sm6025 A

    100 , 50 , 30 and 10 will be displayed in the soft key zone. k) Press 100 to select 100 as the signal internal impedance. 3) Connect the test fixture to the test terminals of SM6025 A. 4) Execute correction (To avoid the influence of stray impedance on measurement accuracy, Open/ Short correction must be operated) (refer to 5.1.2 “Point-frequency correction”)

  • Page 51: Operation Example Of Testing Capacitance By Multi-Frequency List Sweep

    µ, m and k. Press [ENTER], this zone will be changed as 100.000µ and the cursor will automatically move to the high limit zone of sweep point 2. User Manual SM6025...

  • Page 52: Transformer Measurement

    NOTE: where, “2” in L2A, L2B, R2 indicates two terminal measurement method to differ from four-terminal measurement in LCR. SM6025 A is designed to provide easy and cheap transformer measurement method. Limited to the test Figure 5-15 Schematic diagram for transformer and its parameter terminal, transformer measurement can only adopt two-wire method.

  • Page 53: Primary And Secondary Inductance L2A, L2B

    Turn ratio and polarity measurement N, 1/N SM6025 adopts the method of voltage ratio to measure the turn ratio directly. When the secondary parameter selects N or 1/N, it can measure the turn ratio. When N or 1/N appears to be negative, indicating that it is the non-dotted terminal of the transformer connected to Hcur and Hpot terminal.

  • Page 54: Mutual Inductance M

    When the measurement parameter is L2B-N, N is the turn ratio of secondary to primary. * NOTE: SM6025 is suitable for the measurement of turn ratio when N≥1. If N<1, it may results in measurement error due to large amplitude of the sampled signal. Therefore, please select L2A or L2B reasonably before measurement.

  • Page 55: Winding Capacitance Co

    Figure 5-21Capacitance measurement of transformer winding Setup example of comparator SM6025 A provides complete comparator function. It is convenient for component measurement and judgment, incoming and outgoing quality inspection in production line. Standard configuration of HANDLER interface makes it realize automatic sorting measurement system.

  • Page 56: Operation Example Of Load Correction

    Ls—…→，Z—…→，↓ will be displayed in the soft key zone. j) Press Cp-D to select the Cp-D function. k) Move the cursor to FREQ 1 zone, the following soft keys will be displayed in the soft key zone: ON, User Manual SM6025...

  • Page 57: Performance And Test

    Lk: leakage inductance DCR: DC resistance Test combination Parameters described above are combined in the following modes: Primary parameter Z，Y L，C θ （deg phase） ，θ（rad radian） D，Q，R ，R ，G Secondary parameter There is no combination for DCR. Mathematical operation User Manual SM6025...

  • Page 58: Equivalent Mode

    Delay time: time from trigger to start. 0 to 60s are programmable with a resolution of 1ms. 6.1.6 Connection modes of test terminals SM6025 adopts 4-terminal test method. HD(Hcur): current sample high terminal LD(Lcur): Current sample low terminal HS(Hpot)：voltage sample high terminal LS(Lpot): Voltage sample low terminal 6.1.7...

  • Page 59: Signal Mode

    Rad -3.14159 ～ 3.14159 6.2.7 DC bias voltage source 0V— ± 10V Minimum resolution: 0.5mV, Accuracy: 1% x preset voltage+5mV 0mA—± 100mA Minimum resolution: 5µA Measurement accuracy Test accuracy includes stability、temperature coefficient、linear degree、test repeatability and calibration inter-error. User Manual SM6025...

  • Page 60: Accuracies Of │Z│,│Y│, L, C, R, X, G, B

    The accuracy of Q is given by the formula below： Qe = + —————— 1 u Q  Where，Q is the value of the tested Q. is the accuracy of D Above formula should be used when Q ×D <1. User Manual SM6025...

  • Page 61: Accuracy Of Θ

    The accuracy of R （value of tested D）≤0.1 When D The accuracy of Rs is given by the formula below： ×D = 2πfL —— π f C Where, X is the value of test X with the unit [S]. User Manual SM6025...

  • Page 62: Accuracy Factor

    In this figure, the basic accuracy value A can be obtained by the following methods: 0.1---When 0.4Vrms≤Vs≤1.2Vrms, the test speed is the value A of medium, slow and fast. 0.1---When 0.4Vrms≤Vs≤1.2Vrms, the test speed is the value A. User Manual SM6025...
  • Page 63 The unit of the tested impedance is [ ]. The unit of the test signal voltage is [mV When the impedance is smaller than 500 , K is unavailable. When the impedance is larger than 500 , K is unavailable. User Manual SM6025...

  • Page 64: Accuracy Of Dcr

    Under reference working condition，the insulation resistance between power terminal and instrument jacket should not be smaller than 50M . Under humility condition, the insulation resistance between voltage terminal and instrument jacket should not be smaller than 2 M . User Manual SM6025...

  • Page 65: Insulation Intensity

    The used instruments and devices Instrument and Device Specification Standard capacitor 100pF 0.02％ 1000pF D is known 10000pF 10nF 0.1uF 0.02％ standard resistor 100k 0.02％ standard resistor 100k 100µH 0.02% Standard inductor 100mH 10mH 100mH （0～1000）MHz Frequency counter User Manual SM6025...

  • Page 66: Function Check

    Connect frequency meter to ground terminal. The test terminal of the frequency meter is connected with HCUR. Change the frequency as: 20Hz, 100Hz, 1kHz, 10kHz, 100kHz, 200kHz, 300kHz（SM6025 A is 300kHz）. The reading of frequency meter should meet the demand of the test signal frequency in this section.

  • Page 67: Accuracy Of Z

    The signs in this manual are as follows: NR1: integer, e.g.:123 NR2: fix-point number, e.g.: 12.3 NR3: floating-point number, e.g.: 12.3E+5 NL: carriage key, ASCII code: 10 ˆEND: EOI signal in IEEE-488 7.1 Subsystem commands for SM6025 ● DISPlay ● FREQuency ●...

  • Page 68: Measlay Subsystem Commands

    Return format: <page name><NL^END> <page name> can be set as the following items: <LCR MEAS MEAS> The current page is the LCR measurement display page. <BIN No. MEAS> The current page is the bin number display page. User Manual SM6025...

  • Page 69: Frequency Subsystem Commands

    <value> NR1, NR2 or NR3 data format followed by Hz, kHz, MHz. Set the measurement frequency as 20Hz. Set the measurement frequency as 200kHz (The maximum frequency of SM6025 is 300kHz) For example: WrtCmd(“FREQ 1KHZ”) Set the frequency as 1000Hz.

  • Page 70: Voltage Subsystem Commands

    ON or OFF. The :AMPLiture? query returns the current status of the ALC function. Command systax: AMPLitude: ALC OFF Where, Character 1 (49) is equal to ON. Character 0 (48) is equal to OFF. For example: WrtCmd (“AMPL:ALC 0”) Set the ALC function as OFF. Query syntax: AMPLitude:ALC? User Manual SM6025...

  • Page 71: Output Resister Subsystem Commands

    The :DC:ISOLation command is used to set the DC isolation function of the 100mA/10V DC bias source as ON or OFF. The :DC:ISOLation? query returns the current status of the DC isolation function. Command syntax: OUTPut:DC:ISOLation Where, User Manual SM6025...

  • Page 72: Bias Subsystem Commands

    <value> NR1, NR2 or NR3 data format. Set the bias voltage as 0V. Set the bias voltage as 10V. For example: WrtCmd (“BIAS:VOLT MIN”) Set the DC bias voltage as 0V. Query syntax: BIAS:VOLTage? Return format: <NR3><NL^END> User Manual SM6025...

  • Page 73: Function Subsystem Commands

    ON/OFF, deviation display mode, nominal setting. Command tree: FUNCtion :IMPedance CPRP CSRS LPRP LSRS :RANGe <value> :AUTO ON (1) OFF (0) :Source MONitor :VAC ON (1) OFF (0) :IAC ON (1) OFF (0) :DEV1 :MODE ABSolute PERcent :REFerence <value> :FILL User Manual SM6025...
  • Page 74 For example: WrtCmd (“FUNC:IMP:RANG:AUTO ON”) Set the automatic range as ON. Query syntax: FUNCtion:IMPedance:RANGe:AUTO? Return format: <NR1><NL^END> The FUNCtion:Source MONitor:VAC command is used to set the voltage monitor ON or OFF. The FUNCTtion:Source MONitor:VAC? query returns the current voltage monitor status. User Manual SM6025...
  • Page 75 Or character 2 (50) is equal to the nominal value of the secondary parameter. For example: WrtCmd (“FUNC:DEV1:MODE ABS”) Query syntax: FUNCtion:DEV<n>:MODE? Return format: PERC <NL^END> The FUNCtion:DEV<n>:REFerence<value> command is used to set the nominal value of the deviation. The FUNCtion:DEV<n>:REFernece<value>? query returns the current nominal value of the deviation. User Manual SM6025...

  • Page 76: List Subsystem Commands

    <value> should be set from 20HZ to 200KHZ, or return format will report errors. For example: WrtCmd(“LIST:FREQ 1E3, 2E3, 3E3, 4E3”) Set the frequency of the sweep point 1 as 1kHZ; Set the frequency of the sweep point 2 as 2kHZ; User Manual SM6025...
  • Page 77 The LIST:BIAS:VOLTage command is used to clear the original DC bias voltage of each sweep point and reset the voltage. The LIST:BIAS:VOLTage? query returns the current DC bias voltage of each sweep point. Command syntax: LIST:BIAS:VOLTage<value>[,<value>*] User Manual SM6025...
  • Page 78 NOTE: SM6025 series instrument has installed a 10V/100mA internal DC bias current source. If 1A DC source is required, please install an external source. SM6025 can be used with suitable DC Bias Source. (not all DC bias source are compatible , please check before connections, DC current from 0 to 10A ).

  • Page 79: Aperture Subsystem Commands

    For example: WrtCmd (“APER MED, 55”) Query syntax: APERture? Return format: FAST , <NR1><NL^END> SLOW 7.1.12 TRIGger subsystem commands The TRIGger subsystem commands are mainly used to set the instrument trigger source, trigger delay and trigger measurement. Command tree: User Manual SM6025...
  • Page 80 <value> In NR1, NR2 or NR3 data format, from 0 to 60s with 1ms as the resolution. MIN Set the delay time as 0s. MAX Set the delay time as 60s. For example: WrtCmd (“TRIG:DEL 5s”) Set the delay time as 5s. User Manual SM6025...

  • Page 81: Fetch? Subsystem Commands

    Query syntax: TRIGger:DELay? Return format: <NR3><NL^END> 7.1.13 FETCh? subsystem commands The FETCh? subsystem commands are mainly used to direct SM6025 to input a measurement result. Command tree: FETCh [:IMP]? :Source MONitor :VAC? :IAC? :fres :acur? :bcur? The FETCh[:IMP]? query directs SM6025 to input the last measurement result to the output buffer zone.
  • Page 82 Pass high When the compare function of the list sweep measurement is turned off, the output result of <Input/Output> is 0. <Input/Output> data output format applies 2-digits ASCII format: SN (S: +/_, N: from 0 to 1) User Manual SM6025...

  • Page 83: Correction Subsystem Commands

    :SHORt :STATe ON (1) OFF (0) :LOAD :STATe ON (1) OFF (0) :TYPE CPD CPRP CSRS LPRP LSRS :SPOT1 :STATe ON (1) OFF (0) :FREQuency <value> :OPEN :SHORt :LOAD :STANdard <REF.A>,<REF.B> :USE <channel number> :DATA? <channel number> User Manual SM6025...
  • Page 84 Return format: SINGle <NL^END> MULTi The CORReciton:OPEN command is used to execute open correction for 43 preset test points (SM6025 A has 41 preset test points). Command syntax: CORRection:OPEN For example: WrtCmd (“CORR:OPEN”) The CORRection:OPEN:STATe command is used to set the open correction ON or OFF. The CORReciton：OPEN:STATe? query returns the current open correction status.
  • Page 85 Set the function as G-B Set the function as Lp-D YTD Set the function as Y-θ◦ Set the function as Lp-G YTR Set the function as Y-θr For example: WrtCmd (“CORR:LOAD:TYPE CPD”) Query syntax: CORRection:LOAD:TYPE? Return format: <function><NL^END> User Manual SM6025...
  • Page 86 3 refers to frequency spot 3. For example: WrtCmd (“CORR:SPOT1:FREQ 2KHZ”) Set the frequency of frequency spot 1 as 2KHZ. NOTE: <value> should be ranged from 20HZ to 300KHZ (SM6025 A), or return format will report errors. Query syntax: CORRection:SPOT<n>:FREQuency? Return format: <NR3><NL^END>...
  • Page 87 <open1/2/3 B> is NR3 data format and the secondary open correction data at frequency spot 1/2/3. <short 1/2/3 A> is NR3 data format and the primary short correction data at frequency spot 1/2/3. <short 1/2/3 B> is NR3 data format and the secondary short correction data at frequency spot 1/2/3. User Manual SM6025...

  • Page 88: Comparator Subsystem Commands

    1 (decimal 49) is equal to ON. 0 (decimal 48) is equal to OFF. For example: WrtCmd (“COMP ON”) Query syntax: COMParator[:STATe]? Return format: <NR1><NL^END>. The COMParator:MODE command is used to set the comparator mode. The COMParator:MODE? query returns the current mode. User Manual SM6025...
  • Page 89 …, <BINn high limit> Where, <BIN1 low limit> is the low limit of BIN 1 in NR1, NR2 or NR3 data format. <BIN1 high limit> is the high limit of BIN1 in NR1, NR2 or NR3 data format. User Manual SM6025...
  • Page 90 On the contrary, If OFF is selected, the comparison will be made according to the original sequence. The COMParator:SWAP? query returns the current state of the swap function. Command syntax: COMParator:SWAP Where, 1 (decimal 49) is equal to ON. 0 (decimal 48) is equal to OFF. User Manual SM6025...

  • Page 91: Mass Memory Subsystem Commands

    :STATe <record number> :STORe :STATe <record number>,“<string>” The MMEMory:LOAD:STATe command is used to load the existed file. Command syntax: MMEMory:LOAD:STATe<value> Where, <value> is the file number ranging from 0 to 39 (NR1). For example: WrtCmd (“MMEM:LOAD:STAT 1”) User Manual SM6025...

  • Page 92: Gpib Common Commands

    <firmware> Firmware Version (VER1.0.0) For example: WrtCmd(“*IDN?”); The *TST? query executes an internal self test and returns the test result as the sum of all existing errors codes. If there are no error SM6025 returns 0. Query syntax: *TST? Return format: 0<NL^END>...

  • Page 93: Maintenance, Dispatch Procedure For Service &Warranty Conditions

    Descriptions for each bit of the standard event status register Bit number Description Bit number Description Power On(PON) Bit User Request(URQ) Bit Command Error(EME) Bit Execution Error(EXE) Bit Device Dependent Error(DDE) Bit Query Error(QYE) Bit Request Control(RQC) Bit Operation Complete(OPC) Bit User Manual SM6025...
  • Page 94 The *OPC command equals to set the OPC bit of the standard event status register when SM6025 finishes all parameter measurements. Ever since all pending operations have been completed, this command will inform the instrument to add a ASCII number “1” (decimal number: 49) into the output buffer.
  • Page 95 Service Center listed on last page of this manual, nearest to you. Warranty Conditions Scientific warrants all its Instruments to be free from defects in material and workmanship when used under normal operating conditions in accordance with the instructions given in the manual for a period of 12 (Twelve) months from date of purchase from Scientific or its authorized dealers.

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