East Tester ET3501 Operating Instructions Manual
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East Tester ET3501 Operating Instructions Manual

Lcr digital electricbridge
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ET3501/3502/3503/3505/3510
Operating Instructions for
LCR digital electric bridge
Hangzhou Zhongchuang Electronics Co., Ltd.

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Summary of Contents for East Tester ET3501

  • Page 1 ET3501/3502/3503/3505/3510 Operating Instructions for LCR digital electric bridge Hangzhou Zhongchuang Electronics Co., Ltd.
  • Page 2 Hangzhou Zhongchuang Electron Co., Ltd. Adress: NO. 3 Kangle Road, Gongshu District, Hangzhou,Chiaa Postcode: 310015 Telephone: 0086-571-56861333 Fax: 0086-571-56861355 Website: http://www.cnheader.com http://www.easttester.com QQ: 2853705707, 2853705708...

  • Page 3: Table Of Contents

    Contents I. Installation..........................1 1.1 Unpacking and checking..................1 1.2 Power connection...................... 1 1.3 Fuse..........................1 1.4 Environment....................... 1 1.5 Test fixture used......................2 1.6 Preheating and continuous working time.............. 2 1.7 Other features of the instrument................2 II. Introduction to the product....................2 2.1 Main Features......................

  • Page 4: Installation

    ET35 Series Digital Bridges（LCR）Operating Instructions I. Installation This chapter describes the checks you should do after receiving the instrument and the condition you should know and have before the installation. 1.1 Unpacking and checking Thank you for purchasing and using our products; before you use the instrument, please confirm in accordance with the last chapter “warranty”...

  • Page 5: Test Fixture Used

    ET35 Series Digital Bridges（LCR）Operating Instructions (4) If the instrument will not be used for a long time, place it in the original packing box or a similar box stored in a ventilated room with a temperature of 0°C ~ 4 °C and a relative humidity of less than 85% RH.

  • Page 6: Introduction To The Product

    ET35 Series Digital Bridges（LCR）Operating Instructions II. Introduction to the product This chapter describes the main features of the instrument, the front and back panels, boot order and connection with the fixture. 2.1 Main Features 10Hz ~ 1MHz of test frequency ...

  • Page 7: Introduction To The Front Panel

    ET35 Series Digital Bridges（LCR）Operating Instructions 2.2 Introduction to the front panel (1) Power switch It is used to select the status of ET35 power supply (power on or power off). When power is on, the switch is yellow-white, and all operating voltages are applied to the instrument.
  • Page 8 ET35 Series Digital Bridges（LCR）Operating Instructions [Meas Setup] key set measurement conditions, modification, limits of BIN classification and List sweep parameters. [System] key display the system information, set system parameters, self-test, Self correction and upgrades. [Save] key save, edit, or delete information, store measurements and screen images.

  • Page 9: Introduction To The Back Panel

    General Purpose Interface Bus (GPIB). Connecting an external controller and other devices with the connector will constitute automatic measurement system. Note: GPIB interface of ET3501 is optional. (2) RS232C serial interface With the serial communication interface, the instrument can be controlled by an external PC.

  • Page 10: Screen Area

    ET35 Series Digital Bridges（LCR）Operating Instructions 2.4 Screen area This section describes the name and function of each part of the 7-inch color screen of ET35. Screen display (1) Display area It states the name on the display screen. (2) Function key area It shows the mark of the function key as corresponding to the field.

  • Page 11: Basic Operations

    ET35 Series Digital Bridges（LCR）Operating Instructions (5) System message area It shows the system messages, warnings and error messages. (6) Status Indication It shows any status of the front panel when it is locked. 2.5 Basic Operations The basic operations of ET35 is described as follows: 1.
  • Page 12 ET35 Series Digital Bridges（LCR）Operating Instructions Steps of setting the function of measurement: 1. Press the [Display Format] key. 2. Press the [Measurement Display] key. 3. Use the arrow key to select the relevant parameter field such as "function" (part of the common parameters can be set by selecting the corresponding function shortcut key).
  • Page 13 ET35 Series Digital Bridges（LCR）Operating Instructions BIN Number Display Comparator function ON / OFF The internal comparator of ET35 can use up to nine pairs of primary parameter limit and a pair of auxiliary parameter limit, and classify the device into up to 10 kinds (binBIN1 ~ BIN9 and OUT OF BIN).
  • Page 14 ET35 Series Digital Bridges（LCR）Operating Instructions BIN Count display Counter function BIN can be counted by ET35. ET35 can classify the components into the appropriate BIN with the counter function when counting the components classified into each BIN. 999999. is the limit. When the count reaches the maximum value, counting stops and the message of overflow "----"...
  • Page 15 ET35 Series Digital Bridges（LCR）Operating Instructions List sweep Display Sweep mode The List sweep function of ET35 supports up to 100 settings of measurement frequency, test signal level and DC bias. List sweep is done in two ways: sequential mode and stepping mode.

  • Page 16: Basic Measurement

    ET35 Series Digital Bridges（LCR）Operating Instructions III. Basic measurement 3.1 Measurement Setup page Press the [Meas Setup] key to open the Measurement Setup page. Measurement Setup page In the measurement setup page, the user can move the cursor to the corresponding field to configure all of the following measurement control functions.
  • Page 17 ET35 Series Digital Bridges（LCR）Operating Instructions Some settings on the measurement setup page are the same as the page of component measurement shown as follows. test function (function)  option of internal and external DC bias (bias)  test range (range) ...
  • Page 18 ET35 Series Digital Bridges（LCR）Operating Instructions The page is shown below 3.1.2 Measurement Speed The measurement speed of ET35 mainly depends on the following factors: integration time (A / D conversion)  average number  measurement delay  measurement display time ...
  • Page 19 ET35 Series Digital Bridges（LCR）Operating Instructions The page is shown below Select [Customized] display 3.1.3 Measurement function Two parameters of the impedance component can be simultaneously measured in each cycle by ET35: main parameter and auxiliary parameter. Main parameters | Z | (impedance module) ...
  • Page 20 ET35 Series Digital Bridges（LCR）Operating Instructions Auxiliary parameters D (dissipation factor)  Q (quality factor)  G (conductance)  Rp, Rs, Xs (resistance)  θr, θd (impedance angle)  B susceptance  The measurement function can be set in the pages of component measurement and measurement setup.
  • Page 21 ET35 Series Digital Bridges（LCR）Operating Instructions 3.1.4 Measurement range Select the measurement range according to the impedance value of test LCR components. ET35 has nine AC impedance measurement range: 30Ω, 100Ω, 300Ω, 1kΩ, 3kΩ, 10kΩ, 30kΩ,100kΩ, and 300kΩ. The measurement range can be set in the pages of component measurement and measurement setup.
  • Page 22 ET35 Series Digital Bridges（LCR）Operating Instructions 3.1.5 Measruement frequency The measurement frequency of ET35 can be set within the range of 20Hz ~ 1MHz with the stepping of 1mHz and accuracy of 0.01%. The measurement frequency can be set in the pages of component measurement and measurement setup.
  • Page 23 ET35 Series Digital Bridges（LCR）Operating Instructions 3.1.6 Measurement level ET35’s measuring signal level will be set according to the effective value of the measuring sine wave signal. The frequency of the sine wave signal is the measureing frequency, generated by the instrument internal oscillator. Users can either set the oscillator voltage level or the oscillator current level.
  • Page 24 ET35 Series Digital Bridges（LCR）Operating Instructions When you enter the digital data with more than five digits (including decimal digits following the decimal point), it will be automatically set to the nearest measurement level. The page is shown below 3.1.7 DC bias ET35 has two ways of bias including internal and external DC bias.
  • Page 25 ET35 Series Digital Bridges（LCR）Operating Instructions Hangzhou Zhongchuang Electron Co., Ltd.
  • Page 26 ET35 Series Digital Bridges（LCR）Operating Instructions Set the bias voltage The steps of setting the external DC bias: 1. Connect the DC power to the input terminal of the external bias. 2. Press the [Meas Setup] key. 3. Use the arrow key to select the "offset", and press the [Enter] key. 4.
  • Page 27 ET35 Series Digital Bridges（LCR）Operating Instructions 1. Press the [Meas Setup] key. 2. Use the arrow key to select "constant level", and press the [Enter] key. 3. Press the [On] function key to open the automatic level control function. 4. Press [OFF] function key to turn off automatic level control function. The page is shown below 3.1.9 Delay time ET35 trigger delay means a delay from the time the instrument is triggered to the start...
  • Page 28 ET35 Series Digital Bridges（LCR）Operating Instructions The page is shown below 3.1.10 Output resistance ET35 offers 2 kinds of selectable output resistance: 30Ω, and 100Ω. When measuring the inductance, in order to compare with the data from other types of testers, we must ensure the same value of output resistance.
  • Page 29 ET35 Series Digital Bridges（LCR）Operating Instructions 3.1.11 Deviation measurement function The deviation measurement function enables the deviation value instead of the actual value to appear on the screen. The deviation value equal to the current actual measurement value less the reference value set in advance. This function is used to easily observe how the parameters of DUT vary with changes of temperature, frequency, offset and other conditions.

  • Page 30: Correction Page

    ET35 Series Digital Bridges（LCR）Operating Instructions The page is shown below Set the reference value Set the mode of deviation 3.2 Correction page Press the [Meas Setup] key and then press the [correction] function key to enter the user correction page. It allows the user to correct open / short / load to compensate for any errors due to interference factors such as stray admittance and residual impedance.
  • Page 31 ET35 Series Digital Bridges（LCR）Operating Instructions The following parameters can be set in the correction page open circuit correction (open)  short circuit correction (short circuit)  load correction (load)  select cable length (cable)  load correction measurement function (function) ...
  • Page 32 ET35 Series Digital Bridges（LCR）Operating Instructions open circuit correction for the following 49 fixed frequency points. In addition to the following 49 frequencies, the instrument will use the interpolation method to calculate the data of open circuit correction for different measurement range according to the data. The 49 fixed frequency points are shown below.
  • Page 33 ET35 Series Digital Bridges（LCR）Operating Instructions Press the [Means Open] function key, and the page is shown below The steps of open circuit correction based on specified frequency point: 1. Press the [Meas Setup] key. 2. Press [Correction] function key. 3. Use the arrow key to select Spot No to specifiy frequency point. 4.
  • Page 34 ET35 Series Digital Bridges（LCR）Operating Instructions the specified point. The page is shown below Specified frequency points Frequency of the specified point Hangzhou Zhongchuang Electron Co., Ltd.
  • Page 35 ET35 Series Digital Bridges（LCR）Operating Instructions Choose open circuit correction Course of open circuit correction Hangzhou Zhongchuang Electron Co., Ltd.
  • Page 36 ET35 Series Digital Bridges（LCR）Operating Instructions After the open circuit of one single point ends, the measurement result of open circuit correction is shown after "Open A" and "Open B", and the page is shown below 3.2.2 Short circuit correction The short circuit correction function of ET35 can erase the errors caused by spurious impedance (R, X) connected in series with DUT.
  • Page 37 ET35 Series Digital Bridges（LCR）Operating Instructions After the measurement, the system message area will show that the  correction is successful. When measuring, the "Cancel" function key is displayed. Press to cancel the  short circuit correction. 6. Press the [On] function key to initiate the short circuit correction in the continuous measurement.
  • Page 38 ET35 Series Digital Bridges（LCR）Operating Instructions The steps of short circuit correction based on all frequency points: 1. Press the [Meas Setup] key. 2. Press the [correction] function key. 3. Use the arrow key to select Spot No to specify the frequency. 4.
  • Page 39 ET35 Series Digital Bridges（LCR）Operating Instructions The page is shown below The specified frequency point Frequency of the specified frequency point Hangzhou Zhongchuang Electron Co., Ltd.
  • Page 40 ET35 Series Digital Bridges（LCR）Operating Instructions Enter 100 and press the [KHz] function key, and the page is shown below Select short circuit correction Hangzhou Zhongchuang Electron Co., Ltd.
  • Page 41 ET35 Series Digital Bridges（LCR）Operating Instructions After the short circuit correction ends, the measurement result of short circuit correction is shown after "Short A" and "Short B", and the page is shown below 3.2.3. Load correction The load correction function of ET35 uses the transfer coefficient between the actual measurement value and the standard reference value to eliminate the other measurement errors.
  • Page 42 ET35 Series Digital Bridges（LCR）Operating Instructions The page is shown below Choose the measurement function required by the user such as the Rs-Xs measurement function. Use the arrow key to select “Ref A” and press the [Enter] key, and the page is shown below Hangzhou Zhongchuang Electron Co., Ltd.
  • Page 43 ET35 Series Digital Bridges（LCR）Operating Instructions Use the arrow key to select “Ref B” and press the [Enter] key, and the page is shown below The specified frequency point Frequency of the specified frequency point Hangzhou Zhongchuang Electron Co., Ltd.
  • Page 44 ET35 Series Digital Bridges（LCR）Operating Instructions Enter 100 and press the [KHz] function key, and the page is shown below Hangzhou Zhongchuang Electron Co., Ltd.
  • Page 45 ET35 Series Digital Bridges（LCR）Operating Instructions To conduct load correction After the load correction ends, the measurement result of load correction is shown after "Load A" and "Load B", and the page is shown below Hangzhou Zhongchuang Electron Co., Ltd.
  • Page 46 ET35 Series Digital Bridges（LCR）Operating Instructions Use the arrow key to select “Load” and press the [Enter] key, and the page is shown below Press the [On] function key, and conduct load correction for the set frequency in every measurement, and the page is shown below Hangzhou Zhongchuang Electron Co., Ltd.
  • Page 47 ET35 Series Digital Bridges（LCR）Operating Instructions 3.2.4 Selection of cable length ET35 can choose from four lengths of cable: 0m, 1m, 2m and 4m. The steps of selecting the cable length: 1. Press the [Meas Setup] key. 2. Press the [Correction] function key. 3.

  • Page 48: Limit Table Setup Display

    ET35 Series Digital Bridges（LCR）Operating Instructions 3.3 Limit table setup display Press the [Meas Setup] key, and then press the [Limit] function key to enter into the limit table setup page. The limit table setup page helps users configure the built-in comparator of ET35.
  • Page 49 ET35 Series Digital Bridges（LCR）Operating Instructions 3.3.1. Swap parameters The Swap Parameter function can swap the main parameters with auxiliary parameters. For example, when the measurement function is: Cp-D, the swap parameters function changes the measured parameters to: D-Cp. Eight pairs of comparison limits can be set for D, and one pair for Cp.
  • Page 50 ET35 Series Digital Bridges（LCR）Operating Instructions 3.3.2. Modes of limit comparison function Users can use one of the following two ways to specify the limit of primary parameters tolerance mode: in the tolerance mode, the offset value to the  nominal value is set to a comparative limit. Deviation can be in two forms: percentage deviation and absolute deviation.
  • Page 51 ET35 Series Digital Bridges（LCR）Operating Instructions Function keys: DELTA switches the comparator to the tolerance mode based on absolute parameter values DELTA% switches the comparator to the tolerance mode based on percentage of tolerance deviations Seq switches the comparator to the sequential mode The page is shown below 3.3.3.
  • Page 52 ET35 Series Digital Bridges（LCR）Operating Instructions 3.3.4. Turn on/off comparator The built-in comparator of ET35 can use up to eight sets of primary parameter limits and a set of auxiliary parameter limits to classify the DUT into up to nine levels. In addition, when the main parameter is within the limits, but the auxiliary parameter outside the limits, the DUT can be classified into one auxiliary level.
  • Page 53 ET35 Series Digital Bridges（LCR）Operating Instructions 3.3.5. Turn on/off auxiliary level If the classification results depend on auxiliary parameter (secondary parameter), the user can set the auxiliary parameter limits. Users have two ways for classification based on the auxiliary parameter. Assign the auxiliary parameter limits and turn off the classification of the auxiliary ...
  • Page 54 ET35 Series Digital Bridges（LCR）Operating Instructions 4. Press the [On] function key to turn on the auxiliary level. 5. Press the [Off] function key to turn off the auxiliary level. The page is shown below 3.3.6 Upper limit and lower limit ET35 can set 8 main parameter limits and 1 auxiliary parameter limit.
  • Page 55 ET35 Series Digital Bridges（LCR）Operating Instructions function key to clear the limits. Follow steps 5 to 8 if the tolerance mode is selected; follow steps 9 to 13 if the sequential mode is selected. 5. Enter the lower limit with numeric input keys into level 1 "lower limit". After the data are entered, the function key can be used to enter the unit;...

  • Page 56: List Sweep Setup Display

    ET35 Series Digital Bridges（LCR）Operating Instructions The page is shown below 3.4 List Sweep Setup display Press the [Meas Setup] key, then press the [List sweep] function key to enter into the List Sweep Setup page. The List Sweep function of ET35 can automatically sweep measure, sweep the frequency of up to 10 points, and measure the level or bias voltage.
  • Page 57 ET35 Series Digital Bridges（LCR）Operating Instructions The following List sweep parameters can be set in the List Sweep Setup page. Sweep mode (Sweep mode)  sweep parameter setting (frequency [Hz], level [V], level [I], bias [V] and bias  [I]) sweep measurement point setting (sweep point) ...
  • Page 58 ET35 Series Digital Bridges（LCR）Operating Instructions The page is shown below Set the mode 3.4.2 List Sweep Parameters The sweep parameters in List sweep can be the frequency, signal level and DC bias. The steps of setting the List sweep parameters: 1.
  • Page 59 ET35 Series Digital Bridges（LCR）Operating Instructions The page is shown below Set the frequency 3.4.3 List upper limit/lower limit The steps of setting the list upper limit/lower limit: 1. Press the [Meas Setup] key. 2. Press [List sweep] function key. 3. Use the arrow key to select "LMT". 4.

  • Page 60: System Configuration

    ET35 Series Digital Bridges（LCR）Operating Instructions The page is shown below Set the limit parameter Set the upper limit and lower limit IV. System configuration 4.1 System configuration display Press the [System] key to open the system configuration page. It displays the system information of ET35.
  • Page 61 ET35 Series Digital Bridges（LCR）Operating Instructions The page shows some system information of the instrument, such as "type", "SN", "firmware version", "firmware date" and "USB ID", and the information cannot be changed. Information on this page can be set as follows: bias current interface ...

  • Page 62: System Configuration Display

    ET35 Series Digital Bridges（LCR）Operating Instructions 4.2 System configuration display Press the [System] key and then press the [System Config] function key to open the system configuration page. System configuration page The system configuration page displays the status of LAN and GPIB interface; the user can place the cursor on the right field to configure the following controls.
  • Page 63 ET35 Series Digital Bridges（LCR）Operating Instructions 4.2.1 Language switching ET35 support 2 langueages—Chinese and English, and the page is shown below 4.2.2 Configuring system time ET35 has a built-in clock. The steps of configuring the system time: 1. Press the [System] key. 2.
  • Page 64 ET35 Series Digital Bridges（LCR）Operating Instructions 4.2.3 Turn on/off buzzer function ET35 has the voice prompt function and will issue voice prompt in the event of one or more of the following situations: display wrong message or warning message  the open / short circuit correction has been done for the instrument ...
  • Page 65 ET35 Series Digital Bridges（LCR）Operating Instructions 1.2.4.Configuring GPIB address The GPIB address of ET35 must be configured before it is controlled by the GPIB cammand issued from the external controller connected to the GPIB connector of ET35. Hangzhou Zhongchuang Electron Co., Ltd.
  • Page 66 ET35 Series Digital Bridges（LCR）Operating Instructions The steps of configuring GPIB address: 1. Press the [System] key. 2. Press the [System Config] function key. 3. Use the arrow key to select "GPIB Address", and press the [Enter] key. 4. Use numeric keys to input the value within the range from 0 to 30. The page is shown below 4.2.5 Configuring Baud rate The Baud rate of ET35 must be configured before it is controlled by the SCPI...
  • Page 67 ET35 Series Digital Bridges（LCR）Operating Instructions 4.2.5 Configuring LAN IP address To achieve the communication of ET35 through LAN, an IP address must be configured and LAN cable connected. The IP address can be automatically obtained or manually configured. Method of obtaining IP address Method Description DHCP...
  • Page 68 ET35 Series Digital Bridges（LCR）Operating Instructions The steps of manually configuring the IP address: 1. Press [System]. 2. Press the [System Config] function key. 3. Use the arrow key to select "DHCP", and press the [Enter] key. 4. Press the [Off] function key. 5.
  • Page 69 ET35 Series Digital Bridges（LCR）Operating Instructions The page is shown below Set IP Set subnet mask Hangzhou Zhongchuang Electron Co., Ltd.
  • Page 70 ET35 Series Digital Bridges（LCR）Operating Instructions Set gateway 4.2.6 Setting the backlight ET35 can set 32 grades of backlight: the greater the value is, the greater the intensity of the backlight is. The steps of setting the backlight: 1 Press [System]. 2 Press the [System Config] function key.
  • Page 71 ET35 Series Digital Bridges（LCR）Operating Instructions 4.2.8 Startup test ET35 allows the user to decide whether it is necessary to perform startup test after the power is on. STARTUP TEST can help detect failures of the equipment and help the user to find the problem. The steps of setting STARTUP TEST: 1 Press [System].

  • Page 72: System Self Test

    ET35 Series Digital Bridges（LCR）Operating Instructions 4.3 System self test ET35 can conduct self test, so that in case of failure, it can discover the problems and the source of the problems with self test. The page is shown below There are four kinds of self-test modes, which are front panel self-test, board self-test, startup test, and system self-test Front panel self-test helps check the level of the crystal liquid display of the front panel, Ethernet, and GPIB.
  • Page 73 ET35 Series Digital Bridges（LCR）Operating Instructions The self test is shown below Self test completed Hangzhou Zhongchuang Electron Co., Ltd.

  • Page 74: System Update

    ET35 Series Digital Bridges（LCR）Operating Instructions 4.4 System update ET35 supports system update. Update the module of the front panel, measurement motherboards, DDS, and GPIB to improve the capacity of the insturment. The steps of system update 1. Put the system upgrade file ET35.Vx.xx.xxxx.xxx.upt into the file folder with the root directory /updatefile in the U-disc.
  • Page 75 ET35 Series Digital Bridges（LCR）Operating Instructions Updating Update completed Hangzhou Zhongchuang Electron Co., Ltd.

  • Page 76: Self Correction

    ET35 Series Digital Bridges（LCR）Operating Instructions 4.5 Self correction ET35 supports Self correction. The measurement errors of the instrument are corrected with the Self correction function so as to enhance the accuracy of the instrument. The steps of Self correction: 1. Press the [System] key. 2.
  • Page 77 ET35 Series Digital Bridges（LCR）Operating Instructions Hangzhou Zhongchuang Electron Co., Ltd.

  • Page 78: Save / Call

    ET35 Series Digital Bridges（LCR）Operating Instructions V. Save / call By the save / recall function, the user can not only save the configuration and measurement results to the internal memory of ET35 or external USB memory, but can recall them from the internal memory of ET35 or external USB memory. Methods of saving and the purposes Methods of saving Callable...
  • Page 79 ET35 Series Digital Bridges（LCR）Operating Instructions The save display is shown below The recall display is shown below Saving the configuration of the instrument to the internal memeory The steps of saving the configuration of the instrument to an existing file in the internal memeory: 1.
  • Page 80 ET35 Series Digital Bridges（LCR）Operating Instructions 1. Press the [Save] key. 2. Press the [New file] function key. 3. Enter the file name and press the [Enter] key to confirm the save. 4. Press the [Edit] to edit comments and then press the [Enter] key to confirm. 5.
  • Page 81 ET35 Series Digital Bridges（LCR）Operating Instructions 4. Prompt success. Loading the configuration file of the instrument from the USB memory The steps of loading the configuration file of the instrument from the USB memory: 1. Press the [Recall] key. 2. Press the [<-] key to switch to the option of media (the media will be highlighted in red).
  • Page 82 ET35 Series Digital Bridges（LCR）Operating Instructions Users can save up to 81,920 groups of measurement results at one time. Before saving the measurement results to a USB memory, the user needs to do some preparation work to start the measurement, so that the data buffer contains the required data.
  • Page 83 ET35 Series Digital Bridges（LCR）Operating Instructions Saving the snapshots of the screen on the USB memory Users can save the snapshots of the screen from ET35 as .png file to the USB memeory. Then the users can download the saved files to the application programs on the computer. The steps of saving the snapshots of the screen on the USB memory: 1.

  • Page 84: Technical Indicators And Performance Test

    Technical indicators performance test 6.1 Technical indicators The difference between the technical indicators of all types of the ET35 series. Model ET3510 ET3505 ET3503 ET3502 ET3501 Test signal frequency 10Hz-1MHz 10Hz-500kHz 10Hz-300kHz 10Hz-200kHz 10Hz-100kHz range Frequency resolution 、 Resolution:1mHz，Accuracy:0.01% accuracy Test parameters Cp-D，Cp-Q，Cp-G，Cp-Rp，Cs-D，Cs-Q，Cs-Rs，...
  • Page 85 Lp-D, Lp-Q, Lp-G, Lp-Rp, Ls-D, Ls-Q, Ls-Rs, Rs-Xs, |Z|-θr, |Z|-θd, |Y|-θr, |Y|-θd, G-B. 6.1.2 Test signal （1）Test frequency 10Hz-1MHz(ET3510) 10Hz-500kHz(ET3505) Test 10Hz-300kHz(ET3503) frequency 10Hz-200kHz(ET3502) 10Hz-100kHz(ET3501) Resolution 1mHz Accuracy 0.01% （2）Test level Voltage Range 10mVrms~2Vrms Rated value Resolution 1mVrms Hangzhou Zhongchuang Electron Co., Ltd.
  • Page 86 ET35 Series Digital Bridges（LCR）Operating Instructions Accuracy ±(5%+5mVrms) Range 10mVrms~1Vrms Constant Resolution 1mVrms value Accuracy ±(2%+2mVrms) Current Range 100μArms~20mArms Rated value Resolution 10μArms Accuracy ±(5%+50μArms) Range 100μArms~10mArms Constant Resolution 10μArms value Accuracy ±(2%+20μArms) （3）Bias voltage Range -2V~2V Internal Resolution Accuracy ±(2%+5mV) Range -60V~60V External...
  • Page 87 Medium: 100ms. Fast: 20ms for ET3502, ET3503, ET3505, ET3510; 50ms for ET3501. Custom: 5ms to 2s for ET3502, ET3503, ET3505, ET3510; 20ms to 2s for ET3501. The measurement time must be an integer multiple of the measurement signal cycle, so the actual measurement time is related to the frequency of the measurement signal.
  • Page 88 ET35 Series Digital Bridges（LCR）Operating Instructions Lower limit 100ms 20ms 20ms 20ms 20ms 20ms 6.1.4 Measurement display range Parameter Measurement display range Cp, Cs 0.001000pF~99.9999F Lp, Ls 0.001000nH~99.9999kH Rp, Rs, |Z|, Xs 0.001000mΩ~999.999MΩ G, B, |Y| 0.001000μS~999.999kS Θr ±0.000001rad~3.14159rad Θd ±0.000001deg~179.9999deg ±0.000001~9.99999 ±0.001~99999.9 Hangzhou Zhongchuang Electron Co., Ltd.
  • Page 89 ET35 Series Digital Bridges（LCR）Operating Instructions 6.1.5 Measurement accuracy Measurement accuracy includes the errors in measurement stability, temperature coefficient, linearity, and repeatability measurement. The test of measurement accuracy of the instrument shall be conducted under the following conditions: preheating time: ≥30 minutes. ...
  • Page 90 ET35 Series Digital Bridges（LCR）Operating Instructions  [deg]    Ae the relative accuracy of | Z |, | Y |, L, C, R, X, G, and B Accuracy of Rp (when Dx≤0.1) The accuracy of Rp—Rpe is:   Ω...
  • Page 91 ET35 Series Digital Bridges（LCR）Operating Instructions 100k to 300k Slow, medisum Range of impedance Test 1Ω 10Ω 100kΩ Larger frequency Smaller than (Hz) than 1Ω 10Ω 100kΩ 1MΩ 1MΩ 10 to 30 0.15 0.15 30 to 10k 0.05 10k to 100k 0.05 0.15 100k to 300k...
  • Page 92 ET35 Series Digital Bridges（LCR）Operating Instructions  Larger than    100k Note: fm in the table represents the test signal frequency (unit: Hz), Zm is the impedance (unit: Ω), Vs is the test level (unit: mV) Temperature factor Kc ...
  • Page 93 ET35 Series Digital Bridges（LCR）Operating Instructions Hangzhou Zhongchuang Electron Co., Ltd.
  • Page 94 ET35 Series Digital Bridges（LCR）Operating Instructions 6.1.6 Correction function ET35 Series digital bridge provides three types of correction: open circuit correction, short circuit correction and load correction. Type of Description correction Open circuit Compensate erros caused by stray admittance correction of the test fixture Short circuit Compensate erros caused by residual correction...
  • Page 95 ET35 Series Digital Bridges（LCR）Operating Instructions (2) Limit setup You can set absolute value, deviation value and percentage deviation value. (3) Bin Count From 0 to 999999. 6.1.9 Auxiliary fuction of measurement (1) Data buffering function 20k sets of measurement data (2) Save / Recall The user can write 10 setting conditions into the built-in non-volatile memory, or read 10 setting conditions from the built-in non-volatile memory.

  • Page 96: Components

    ET35 Series Digital Bridges（LCR）Operating Instructions 6.2 Components 6.2.1 Standard accessories Three-core power cord  4-terminals of kelvin testing cable  Lead-type kelvin testing fixture( (only ET3510, 3505, 3503, three types is  standard) Gilded short circuit bar  6.2.2 Optional accessories GPIB cable ...

  • Page 97: Performance Test

    ET35 Series Digital Bridges（LCR）Operating Instructions Humidity：15-85%  Altitude：0 m to 2k meters  6.3.4 External dimensions  330mm*285mm*136mm (L * W * H) 6.3.5 Display  7 inch TFT LCD screen with a resolution of 800 * 480 6.4 Performance test The following content describes the test method of the technical specifications in this section.
  • Page 98 ET35 Series Digital Bridges（LCR）Operating Instructions Resistance measuring accuracy Capacitance measuring accuracy Inductance measurement accuracy 6.4.4 Steps of measurement Frequency accuracy Test point: 10Hz, 100Hz, 1kHz, 10kHz, 50kHz 1. Mount the test fixture on the output port of ET35, clamp the two probes of the multimeter with its two clips;...
  • Page 99 ET35 Series Digital Bridges（LCR）Operating Instructions 5. Repeat step 4 until the test on all points is completed; 6. Compare to see if the actual accuracy meets the requirement. Resistance accuracy measurement Test point: 10Ω, 100Ω, 1kΩ, 10kΩ, 100kΩ Measuring frequency: 1kHz 1.

  • Page 100: Instruction On The Use Of Handler Interface

    ET35 Series Digital Bridges（LCR）Operating Instructions VII. Instruction on the use of Handler interface ET35 digital bridge provides the user with Handler interface, which is mainly used for the output of the sorting of the instrument. When the instrument is used in an automatic component test system, the interface provides the signal to the system and the output of the sorting results.
  • Page 101 ET35 Series Digital Bridges（LCR）Operating Instructions /EXT.TRIG (External trigger signal) and / Keylock (keylock). PIN No. Signal name Description /BIN1 Level classification result: so /BIN output is open collector output /BIN2 /BIN3 /BIN4 /BIN5 /BIN6 /BIN7 /BIN8 /BIN9 /OUT /AUX /EXT.TRIG External trigger: when the triggering mode is set to EXT.TRIG (external trigger), ET35 is triggered by the rising edge pulse signal imposed on the...
  • Page 102 ET35 Series Digital Bridges（LCR）Operating Instructions /KEY LOCK When the line is valid, all function keys on the front panel of ET35 are locked and do not work. EXT.DCV1 External DC voltage 1: DC supply pin of the photocoupling signal instrument (/EXT.TRIG, /KeyLock, /ALARM,...
  • Page 103 ET35 Series Digital Bridges（LCR）Operating Instructions Sequence chart Time Minimum value Maximum value T1 trigger pulse ---- T2 delay time from the start 200uS Display time +200uS of measurement T3 /EOM trigger latency time ---- after output Refer to the operating instruction on ET35 for measurement time The typical comparison time is about 1ms Definition of the signal line of the List sweep comparator The definition of the List sweep comparison function signal differs from that of the...
  • Page 104 ET35 Series Digital Bridges（LCR）Operating Instructions completed. /EOM is output after all measurements end for each stepping in the sweep cycle. Layout of List sweep comparator pins PIN No. Signal name Description /BIN1 Sweep point 1 exceeds the limit /BIN2 Sweep point 2 exceeds the limit /BIN3 Sweep point 3 exceeds the limit /BIN4...
  • Page 105 ET35 Series Digital Bridges（LCR）Operating Instructions /KEY LOCK When the line is valid, all function keys on the front panel of ET35 are locked and do not work. EXT.DCV1 External DC voltage 1: DC supply pin of the photocoupling signal instrument (/EXT.TRIG, /KeyLock, /ALARM, /INDEX, /EOM）...

  • Page 106: Circuit Theory And Formulas

    ET35 Series Digital Bridges（LCR）Operating Instructions VIII. Circuit theory and formulas Series / parallel circuit model The models and formulas of six types of series and parallel equivalent circuits are shown below: capacitance, inductance and resistance. The formulas include all types of primary and secondary measurements.
  • Page 107 ET35 Series Digital Bridges（LCR）Operating Instructions flow through the two terminals. The conductance and resistance are reciprocal. The former measures the degree of ease for the current to flow through the two terminals. Resistance Conductance Series resistance Rs Parallel conductance Gp（=1/Rp） Parallel resistance Rp ...
  • Page 108 ET35 Series Digital Bridges（LCR）Operating Instructions           Xs  Bp  Formula to calculate the impedance (Z) and admittance (Y=1/Z) Impedance measures the overall inhibiton by the two terminals to the AC. The admittance and the impedance are reciprocal.
  • Page 109 ET35 Series Digital Bridges（LCR）Operating Instructions   CsRs       CsRs     CpRp   LpGp Formula   tan(        tan(    Formula to calculate the phase angle (θ) Phase angle (φ) refers to the phase of measured impedance (Z), admittance (Y), quality factor (Q) and dissipation factor (D).
  • Page 110 ET35 Series Digital Bridges（LCR）Operating Instructions    Short circuit measurement： Correction model is as follows  Zdut  Correction formula：   Dut: impedance of DUT Zxm: impedance value measured by the instrument Yo: stray capacitance admittance Zs: impedance value of the remaining impedance Hangzhou Zhongchuang Electron Co., Ltd.

  • Page 111: Notes And Warranty

    ET35 Series Digital Bridges（LCR）Operating Instructions IX. Notes and warranty 9.1 Packaging The measuring instrument with its accessories, components, instruction, and production qualification certification should be placed in the plastic bag and stored in the solid box against dust, vibration and moisture. 9.2 Transport Handle the measuring instrument with care during transport.

This manual is also suitable for:

Et3502Et3503Et3505Et3510

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