Tegam 3550 Instruction Manual
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Tegam 3550 Instruction Manual

42.0hz-5.00mhz fully programmable lcr meter
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NOTE: This user's manual was as current as possible when this product was manufactured. However, products are
constantly being updated and improved. Because of this, some differences may occur between the descriptions in this
manual and the product received. Please refer to www.tegam.com for future updates of this manual.
Model 3550 Programmable LCR Meter Instruction Manual
TEGAM Inc.
Model 3550
42.0Hz-5.00MHz
Fully Programmable
LCR Meter
MODEL 3550
Instruction Manual
PN# 3550-900-01CD
Publication Date April 2004
REV. B
© Copyright 2004, TEGAM, Inc. All rights reserved.
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Summary of Contents for Tegam 3550

  • Page 1 NOTE: This user’s manual was as current as possible when this product was manufactured. However, products are constantly being updated and improved. Because of this, some differences may occur between the descriptions in this manual and the product received. Please refer to www.tegam.com for future updates of this manual. Model 3550 Programmable LCR Meter Instruction Manual...
  • Page 2 Model 3550 Programmable LCR Meter Instruction Manual...

  • Page 3: Table Of Contents

    Feature Overview ................... 1-1 3550 Options and Accessories ..............1-4 Performance Specifications ..............1-5 Table 1.1 – Model 3550 Measurement Range Limits ....... 1-5 Table 1.2 – Model 3550 Measurement Frequencies ......... 1-7 Table 1.3 – Model 3550 Measurement Amplitudes ........1-7 Table 1.4 –...
  • Page 4 Display A Parameter Selection Key............4-18 Display A ..................4-18 Bin Display LED................. 4-18 Comparator State Annunciators............4-19 Sample LED (Trigger Status)............... 4-19 Comparator ON/OFF Switch ..............4-19 Display B Parameter Selection Key............4-19 Display B ..................4-19 Model 3550 Programmable LCR Meter Instruction Manual...
  • Page 5 Percent Value Settings ............... 4-37 Bin Operation ................... 4-39 Figure 4.5 – Sequenced Bin Sorting ............. 4-39 Figure 4.6 – Nested Bin Sorting ............4-40 Outputting the Comparator’s Results............ 4-41 Audible Buzzer Operation ..............4-41 Model 3550 Programmable LCR Meter Instruction Manual...
  • Page 6 GPIB Switches .................. 5-31 Delimiter Output Formats ..............5-31 Output Status Bits for Service Requests..........5-31 Figure 5.5 – GPIB Status Bits .............. 5-31 Additional Notes for Using the GPIB Interface ........5-31 Programming Examples..............5-33 Model 3550 Programmable LCR Meter Instruction Manual...
  • Page 7 Preparation for Repair or calibration Service..........6-5 Expedite Repair and calibration Form ............6-6 Performance Verification Procedure............6-7 Model 3550 Calibration Adjustment Procedure ..........6-12 APPENDIX .......................A.1 Setting the Constant Voltage Mode ............A.3 To Enable the Constant Voltage Mode........... A.3 Calculating the maximum Allowable Constant Voltage Setting....
  • Page 8 Model 3550 Programmable LCR Meter Instruction Manual...

  • Page 9: Instrument Description

    Instrument Description INSTRUMENT DESCRIPTION PREPARATION FOR USE QUICK START INSTRUCTIONS OPERATING INSTRUCTIONS PROGRAMMING & INTERFACING SERVICE INFORMATION APPENDIX...

  • Page 10: Feature Overview

    Automatic adjustment for Zero Correction, Range Switching, and Series and Parallel Mode Switching. The basic comparator function of the 3550 is extended to allow sorting of components to up to 10 different bins. Up to 9 panels worth of measurement settings can be stored in the instrument’s non-volatile memory for convenient recall.
  • Page 11 Settings etc. are stored in non-volatile memory and are retained in the event of power loss. Remote Operation The TEGAM Model 3550 provides standard RS-232C and I/O Control Connector interfaces for remote operation. There is an optional GPIB (IEEE-488) interface available for purchase.

  • Page 12: Options And Accessories

    Available for performing three recommended for the following terminal measurements on surface component values: mount devices. Connects directly to the front panel of the 3550. Use the C<100pF; L < 100µH; R > 1M 3511 for medium and high impedance measurements.

  • Page 13: Performance Specifications

    Model 3550 LCR Meter Instruction Manual Performance Specifications The advertised specifications of the model 3550 are valid under the following conditions: 1. The instrument must be verified and/or adjusted using the methods and intervals as described in the calibration section of this user’s manual.
  • Page 14 Instrument Description Model 3550 LCR Meter Instruction Manual Performance Specifications cont’d: Basic Accuracy 0.1% Display Specifications: Numeric Display (DISPLAY A) L, C, R, |Z|, |Y| (4 digits) Numeric Display (DISPLAY B) D, Q, R , G, X, B, digits) Numeric Display (DISPLAY C)

  • Page 15: Table 1.2 – Model 3550 Measurement Frequencies

    Instrument Description Model 3550 LCR Meter Instruction Manual Performance Specifications cont’d: Measurement Frequency Table 1.2 – Model 3550 Measurement Frequencies Frequency Range Resolution 42.0Hz ~99.9Hz 0.1Hz Steps 100Hz~999Hz 1Hz Steps 1.00kHz~9.99kHz 10Hz Steps 10.0kHz~99.9kHz 100Hz Steps 100kHz~999kHz 1kHz Steps 1.00MHz~5.00MHz...

  • Page 16: Table 1.4 – Model 3550 Amplitude Accuracies

    Instrument Description Model 3550 LCR Meter Instruction Manual Performance Specifications cont’d: Monitor Functions Voltage Monitor 0.00V~5.00V Current Monitor 0.00mA~99.99mA Settings and Monitor Accuracy Table 1.4 – Model 3550 Amplitude Accuracies Frequency Range Test Voltage Test Current Accuracy Accuracy 42.0Hz~4.00MHz ±(10%+10mV) ±(10%+10µA) 4.01MHz~5.00MHz...

  • Page 17: Table 1.6 – Typical Analog Measurement Times

    Instrument Description Model 3550 LCR Meter Instruction Manual Performance Specifications cont’d: Measurement Time Open Terminal Voltage Mode When the Measurement Frequency is 10kHz, no averaging, the range is held constant, RS-232C is OFF and the Comparator is ON, the shortest measurement time is 18ms.
  • Page 18 Instrument Description Model 3550 LCR Meter Instruction Manual Performance Specifications cont’d: Measurement Terminals 2 – BNC Source Terminals 2 – BNC Detect Terminals 1 – Guard Banana/Binding Post Parasitic Impedance Correction Open Correction or higher Impedance Short Correction Less than 1k...

  • Page 19: Table 1.7A – Absolute Comparator Operation

    Instrument Description Model 3550 LCR Meter Instruction Manual Performance Specifications cont’d: Comparator/Binning: Absolute Limits Operation Table 1.7a – Absolute Comparator Operation Operation Function Bins 1~9 "LOW LIMIT" Measurement Value "HIGH LIMIT" Measurement Value < "LOW LIMIT" "HIGH LIMIT" < Measurement Value...
  • Page 20 Instrument Description Model 3550 LCR Meter Instruction Manual Performance Specifications cont’d: Digital Interfaces RS-232C Standard interface GPIB Optional Interface Control I/O Standard Interface Connector External Control Signals CONTROL PANEL/EXT, EXT TRIGGER, PANEL No. (Isolated) External Output Signals MEASURE END, ERROR, DISPLAY A HI, DISPLAY A LO, DISPLAY A GO, DISPLAY B LO, DISPLAY B HI,...

  • Page 21: I Instrument Description

    Generally speaking, the characteristics of circuit components can be evaluated in terms of impedance (Z). The 3550 LCR Meter measures the voltage and current components of the circuit in relation to the alternating signal of the measurement frequency, and uses these values to calculate impedance (Z) and phase angle ( ).

  • Page 22: Table 1.9 – Series And Parallel Equivalent Circuit Measurements

    Model 3550 LCR Meter Instruction Manual Formulas and Measurement Accuracy cont’d: The 3550 calculates the various measurement values using the inter-terminal voltage (V) applied to the DUT (device under test) terminals, the current (I) that occurs in relation to the voltage, the Phase Angle ( ) of (V) and (I), and the Angular Velocity ( ) of the measurement frequency.
  • Page 23 Instrument Description Model 3550 LCR Meter Instruction Manual Measurement Accuracy The impedance of the DUT is either the actual measured value or a value, which is derived from the formulas below: If =90° |Z| = If = -90° |Z| = 1/ C If =0°...
  • Page 24 Instrument Description Model 3550 LCR Meter Instruction Manual 1-16...
  • Page 25 Preparation for Use INSTRUMENT DESCRIPTION PREPARATION FOR USE QUICK START INSTRUCTIONS OPERATING INSTRUCTIONS PROGRAMMING & INTERFACING SERVICE INFORMATION APPENDIX Model 3550 LCR Meter Instruction Manual...

  • Page 26: Unpacking And Inspection

    Model 3550 LCR Meter Instruction Manual Unpacking & Inspection: Each 3550 is put through a series of electrical and mechanical inspections before shipment to the customer. Upon receipt of your instrument unpack all of the items from the shipping carton and inspect for any damage that may have occurred during transit.
  • Page 27 Preparation for Use Model 3550 LCR Meter Instruction Manual Safety Information & Precautions Cont’d: Symbols: As Marked in This Manual: This symbol denotes where precautionary information may be found. As Marked on Equipment: Caution – Risk of Danger Danger – Risk of Electric Shock...

  • Page 28: Servicing Safety Summary

    Refer fuse replacement to qualified service personnel. Do Not Use in Explosive Environments WARNING: The 3550 is not designed for operation in explosive environments. Do not Operate Without Covers WARNING: This device should be operated with all panels and covers in place. Operation with missing panels or covers could result in personal injury.

  • Page 29: Line Voltage And Fuse Selection

    CAUTION: DO NOT APPLY POWER TO THE INSTRUMENT BEFORE READING THIS SECTION: Unless other wise specified, the Model 3550 is delivered from TEGAM with its power supply set for 120V, 60 Hz operation. However, the 3550 design allows it to operate under 100, 120V, 220 or 240V @ 50/60 operation.
  • Page 31 Quick Start Instructions SPECIFICATIONS PREPARATION FOR USE QUICK START INSTRUCTIONS OPERATING INSTRUCTIONS PROGRAMMING & INTERFACING SERVICE INFORMATION APPENDIX Model 3550 LCR Meter Instruction Manual...

  • Page 32: Power The Unit

    Power the Unit The power supply of the Model 3550 is designed for 50-60 Hz operations and a voltage range of 90-250 VAC. It is assumed that the “Preparation for Use” section of this manual has been read an understood and the line voltage and fuse settings have been verified to be correct.
  • Page 33 Quick Start Instructions Model 3550 LCR Meter Instruction Manual Table 3.2a – Control Command Summary Change measure item of DISPLAY A Change measure item of DISPLAY B Show measure frequency on DISPLAY C FREQ Show terminal voltage on DISPLAY C Show measure.

  • Page 34: Table 3.3 – Shift Function Summary

    Quick Start Instructions Model 3550 LCR Meter Instruction Manual Table 3.2b – Control Command Summary cont’d Release Key Lock SHIFT ENTER Lock Key SHIFT ENTER No buzzer for decision SHIFT ENTER Buzzer for GO decision ON SHIFT ENTER Buzzer for NO GO decision ON...

  • Page 35: Instrument Setup For Basic Measurements

    Model 3550 LCR Meter Instruction Manual Instrument Setup for Basic Measurements To perform basic measurements with the Model 3550, perform the steps below: Refer to “Operating Instructions” for more details about specific commands or functions of the 3550. NOTE: The numerals in parentheses reference the Control Command Tables on the previous pages. The...

  • Page 36: Setting The Absolute Comparator

    The above procedure applies only to the Absolute Value Comparator. The procedure for setting the Percent Comparator is different. Before attempting to set the Absolute Comparator limits, verify that the 3550 is in the Absolute Comparator Mode. After setting the limit values for the comparator, the measurement parameters for DISPLAY A and DISPLAY B cannot be changed.

  • Page 37: Setting The Percent Comparator

    The upper and lower limit for the nominal value are the same. For the threshold values, different values for the upper and lower limit must be set. In order to proceed, the 3550 must be in the percent comparator mode.
  • Page 38 Quick Start Instructions Model 3550 LCR Meter Instruction Manual Setting the Percent Comparator Input the BIN No. After selecting the threshold value input mode, use the cursor key, [ ] to highlight the bin LED, and then press [1]~[9] to select the desired bin.
  • Page 39 Operating Instructions INSTRUMENT DESCRIPTION PREPARATION FOR USE QUICK START INSTRUCTIONS OPERATING INSTRUCTIONS PROGRAMMING & INTERFACING SERVICE INFORMATION APPENDIX Model 3550 LCR Meter Instruction Manual...

  • Page 40: Basic Operation

    3550 be manually set. In the event that AUTO Range must be used, then operation of the 3550 in the “Constant Current” or “Constant Voltage” Mode will maintain signal levels while allowing range adjustments.

  • Page 41: Measurement Circuit Modes

    Operating Instructions Model 3550 LCR Meter Instruction Manual Measurement Tips cont’d: Measurement Circuit Modes When the Measurement Circuit Mode is set to "AUTO", the Parallel Mode (PRL) or the Serial Mode (SER) is automatically selected by the instrument based on the Measurement Range. The measurement range is determined by the instrument by the magnitude of |Z| with no regards to D or Q of the DUT.

  • Page 42: Negative Capacitance Or Inductance Readings

    If a capacitor is connected to the 3550 while in the inductance measurement mode or if an inductor is connected to the 3550 while in the capacitance mode, a negative sign will appear in the display. The negative sign in the capacitance mode indicates an inductive measurement. The negative sign in the inductance mode indicates a capacitive measurement.

  • Page 43: Test Lead Requirements

    Measurement Tips cont’d: Test Lead Requirements Four-wire Kelvin-type cables or fixtures must be used with the 3550 in order to obtain accurate impedance measurements. The Kelvin measurement technique allows significant accuracy advantage over the two-wire method. This is because it virtually eliminates lead resistance and inductance and reduces stray capacitance between the source and sense leads.

  • Page 44: Measurement Signal Levels

    The "CIRCUIT MODE" should always be "AUTO" mode, unless there is a special circumstance that requires otherwise. The 3550 is in the AUTO circuit mode when the pushbutton’s LED is illuminated. Manually setting the circuit mode should only be done in special circumstances where series or parallel measurement is necessary even if some discrepancy is known to occur.

  • Page 45: Front Panel Description

    Operating Instructions Model 3550 LCR Meter Instruction Manual Front Panel Description Front Panel Layout Figure 4.2: Front Panel layout Except for the "POWER" switch, a buzzer will be sounded whenever the function of a switch is changed.

  • Page 46: Power Switch

    1 - [POWER] Switch – [POWER] With the power switch in the down state, power is applied to the 3550 and in the up state power is off. When the power is turned on, the remaining operational switches will retain the same status as they had before the power was previously turned off.

  • Page 47: Zero Panel

    [UP] - In the manual mode, pressing the [UP] key will raise the current range of the 3550. The [UP] key will flash to indicate when the current range is over ranged and needs to be raised in order for a reading to take place.

  • Page 48: Shift Key

    [SHIFT] [0]: Frequency Set Mode The 3550 test frequency settings may be programmed from 42.0Hz to 5.00 MHz with a resolution of three significant digits. If DISPLAY C is set to indicate test frequency and the 3550 is in the Measurement mode, the frequency can be adjusted changed by pressing the [UP] and [DOWN] keys in the DISPLAY C panel.

  • Page 49: Test Voltage Set Mode

    DISPLAY C to three significant digits. Refer to the Appendix to calculate the maximum voltage range of the constant voltage mode. If DISPLAY C is set to indicate test voltage and the 3550 is in the Measurement mode, the voltage amplitude can be incremented or decremented by pressing the [UP] and [DOWN] keys in the DISPLAY C panel.

  • Page 50: Averaging Set Mode

    [SHIFT] [2]: Test Current Set Mode cont’d: If DISPLAY C is set to indicate test current and the 3550 is in the Measurement mode, the current amplitude can be incremented or decremented by pressing the [UP] and [DOWN] keys in the DISPLAY C panel. If the [UP] and [DOWN] keys are held down the instrument will increase the speed at which the current is incremented or decremented.

  • Page 51: Comparator Buzzer Function

    Operating Instructions Model 3550 LCR Meter Instruction Manual Front Panel Description cont’d: [SHIFT] [5]: Comparator Buzzer Function Press the [SHIFT] [5] keys to enter the Buzzer Settings Mode. The active setting, 0~2 will blink in DISPLAY B. Buzzer Function Value...

  • Page 52: Comparator Functions Mode

    Operating Instructions Model 3550 LCR Meter Instruction Manual Front Panel Description cont’d: [SHIFT] [7]: Comparator Functions Mode Press [SHIFT] [7] to access the Comparator Functions Mode. Either a flashing “0” or a “1” will appear on DISPLAY B. The meaning of the numbers is as follows:...

  • Page 53: Rs-232C Settings Mode

    Operating Instructions Model 3550 LCR Meter Instruction Manual Front Panel Description cont’d: [9]: RS-232C Settings Mode [SHIFT] For the RS-232C, the baud rate, data length, parity and stop bit can be defined by the user. Press the [SHIFT] [9] key to enter into the RS-232C setup mode.

  • Page 54: Correction Frequency Limit Setting Mode

    Operating Instructions Model 3550 LCR Meter Instruction Manual Front Panel Description cont’d: [SHIFT] [-]: Correction Frequency Limit Setting Mode As an alternative to zero correcting the entire frequency range 42Hz~5MHz, this function allows the user to set the correction frequency range in terms of upper and lower limits.

  • Page 55: Unknown Terminals Panel

    [0]~[9], [-], [D.P.], [UNIT], and [IGNORE] commands. NOTE: Only panels 1~9 can have comparator limit values assigned to them. The "GUARD" Terminal This terminal is connected to the chassis of the 3550. When measuring High-Impedance devices, connect the device’s shield to this binding post. 4-17...

  • Page 56: Remote Interface Status Leds

    Front Panel Description cont’d: Remote Interface Status LEDs – “SRQ” “LTN” “TLK” “RMT” These LEDs indicate the status of remote communications using the 3550’s standard RS-232C and optional GPIB (IEEE-488.2) interfaces All four annunciators are used for GPIB communications. If the RS-232C is the controller, then only the "RMT"...

  • Page 57: Comparator State Annunciators

    Operating Instructions Model 3550 LCR Meter Instruction Manual Front Panel Description cont’d: Comparator State Annunciators Located in the Comparator Panel there are three total comparator state annunciators. The annunciators become active when the comparator is on. The comparator is turned on by pressing the [ON] key in the Comparator Panel.

  • Page 58: Display C Measurement Panel

    Programmable test currents are available from 0.01mA~99.99mA for test frequencies of 42.0Hz~1.00MHz. For test frequencies above 1.00MHz, the current can be set between 0.01mA and 20.00mA. The 3550’s test current is adjustable in 0.01mA steps and is displayed to three significant digits.

  • Page 59: Table 4.4 – Cv/Cc Indicators

    Front Panel Description cont’d: Test Signal Modes - [CV/CC] Model 3550 is capable of three different measurement modes. These are Open Circuit Test Voltage Mode, Constant Voltage Mode, and Constant Current Mode. The active measurement mode can be confirmed by looking at the [V], [I], and [CV/CC] LED Keys in the DISPLAY C panel.

  • Page 60: Rear Panel Description

    GND Terminal Control I/O Holes Port Line Voltage Selector Plug – The Model 3550 is capable of 100/120/220/240 VAC 50/60 Hz Operation. To change the line voltage, remove the plug by pulling it Cooling Fan Ventilation Holes – To prevent from the rear panel.

  • Page 61: Making Accurate Measurements

    Operating Instructions Model 3550 LCR Meter Instruction Manual Making Accurate Measurements: Connections to the Device Under Test (DUT) The relationship between the connections schemes and impedance, |Z| ranges are shown in Table 5-1. It is extremely important, for measurement accuracy purposes, to observe appropriate connection methods for the subject test piece and measurement range.

  • Page 62: Test Fixture Selection

    Table 4.4 - Impedance and Frequency Limitations of Kelvin Klip Leads Frequency Measurement Range 42Hz ~ 10kHz 100m ~ 1M 10.1kHz ~100kHz ~ 100k 101kHz ~ 1.00MHz ~ 10k NOTE: Additional test voltage and current restrictions of the 3550 unrelated to test fixtures apply for measurements exceeding 1MHz. 4-24...

  • Page 63: Table 4.5 – Impedance And Frequency Limitations Of The Smd Test Fixture

    0.50 in. (12.7mm) long. The set includes a 5 ft. (1.5m) cable for connection to the 3550 47422 – Chip Tweezer Rebuild Kit Tweezer tips are intended to last from 100,000 to 500,000 operations.

  • Page 64: Zero Corrections

    Residual Impedance and Leakage of test fixtures exists for all types of test fixtures. To maintain the performance accuracy of the 3550 it is highly recommended that a zero correction be performed whenever a change in test fixture takes place. For test fixtures such as Kelvin Klip Leads where the positioning may vary, extra effort must be made to perform the zero correction while positioning the leads in the exact location, as the measurement will be taken.

  • Page 65: Figure 4.4 – Terminal Connections For Zero Correction

    Operating Instructions Model 3550 LCR Meter Instruction Manual Making Accurate Measurements cont’d: Zero Corrections cont’d NOTE: The parasitic impedance of test adaptors and measurement cables differ from cable to cable. Whenever a test adaptor or cable is changed, make sure that zero correction is performed again.

  • Page 66: Equivalent Circuits

    = tan = tan The measurable quantities of the 3550 are L, C, R, Z, Y, D, Q, G, Rp, Rs, X, B, and . The measured value of these parameters will change in value as the test frequency is increased or decreased.

  • Page 67: Table 4.7 – Equivalent Circuit Relationships

    (SER) C (PRL) The Series Equivalent Circuit Mode of the 3550 can be used for testing devices where series impedance has a great effect on the measurement. Parallel Equivalent Circuit Mode is used for testing devices with high reactance where parallel leakage becomes more significant. The formulae in Table 4.7 can be used to convert readings in one equivalent circuit mode to the other.

  • Page 68: Operating The 3550

    When the [POWER] Switch is turned ON the settings of the machine will be same as when the power was previously turned off. In order to reset the 3550, simply press [MAN/EXT] at the same time the [POWER] key is pressed. Resetting will clear the zero correction factors and return the instrument settings to factory defaults.
  • Page 69 8) Connect the DUT to the measurement terminals. The CIRCUIT MODE and RANGE will be automatically selected by the 3550. The L, C, or R reading will be shown on DISPLAY A. 4-31...
  • Page 70 Always make sure that capacitors are completely discharged before connecting to the 3550 measurement terminals otherwise erroneous readings or damage to equipment could result. Notes of Caution for Resistance (R) Measurement For low resistance measurements, 5 Terminal Measurements are required to minimize series resistance and inductance errors.

  • Page 71: Measuring |Z| And |Y|

    6) Press the [INT] key in the TRIGGER panel and verify that the “INT” LED is on. This will continuously trigger the 3550 and update the reading shown on DISPLAY A at a rate determined by measurement frequency, delay time, number of averages, and the time taken to auto range. If MAN/EXT trigger mode is selected the reading will not be updated until a new trigger is received from the front panel or remote interface.
  • Page 72 6) Press the [INT] key in the TRIGGER panel and verify that the “INT” LED is on. This will continuously trigger the 3550 and update the reading shown on DISPLAY A at a rate determined by measurement frequency, delay time, number of averages, and the time taken to auto range. If MAN/EXT trigger mode is selected the reading will not be updated until a new trigger is received from the front panel or remote interface.

  • Page 73: The Comparator

    Comparator settings can only be defined and stored into panels 1-9. Before a comparator setting can be defined, a panel, 1-9 must be recalled. This is done by pressing the [0-9] key until the desired panel is active while the 3550 is in the measurement mode.

  • Page 74: Absolute Value Settings

    Operating Instructions Model 3550 LCR Meter Instruction Manual The Comparator cont’d: Absolute Value Settings NOTE: A condensed version of this procedure can be found in the “Quick Start Section” 1) Make sure that panel 1~9 is selected. Do this by pressing the [0~9] key until the desired panel # appears on the Panel LED.

  • Page 75: Percent Value Settings

    Operating Instructions Model 3550 LCR Meter Instruction Manual The Comparator cont’d: Percent Value Settings NOTE: A condensed version of this procedure can be found in the “Quick Start Section” Set the Nominal Value 1) Make sure that panel 1~9 is selected. Do this by pressing the [0~9] key until the desired panel # appears on the Panel LED.
  • Page 76 Operating Instructions Model 3550 LCR Meter Instruction Manual The Comparator cont’d: Percent Value Settings cont’d 7) To input an upper limit threshold value, press the [HIGH] key. Press the [LOW] key to set the lower limit threshold value. Then, highlight the first digit of DISPLAY C and press [1].

  • Page 77: Bin Operation

    There are two common multi category BIN settings for sorting components. The first is Sequenced Sorting as illustrated in Figure 4-5. In this setting, the 3550 comparator will sort components based on their limit values where each BIN# will define a unique range of measured values. Any number of bins may be used for Sequenced Sorting.

  • Page 78: Figure 4.6 – Nested Bin Sorting

    BIN 1. If the measured value falls outside of the BIN 1 range then it is evaluated for BIN 2. If the component value falls within the BIN 2 range then it is sorted into BIN 2. If not, then the 3550 proceeds the evaluation to BIN 3 and so on.

  • Page 79: Outputting The Comparator's Results

    Operating Instructions Model 3550 LCR Meter Instruction Manual The Comparator cont’d: Outputting the Comparator’s Results There are two ways to determine the state of the comparator. The LEDs of the Comparator Panel, and the optically isolated, open collector outputs of the Control I/O Connector on the rear of the instrument.
  • Page 80 4-42...
  • Page 81 Programming and Interfacing INSTRUMENT DESCRIPTION PREPARATION FOR USE QUICK START INSTRUCTIONS OPERATING INSTRUCTIONS PROGRAMMING & INTERFACING SERVICE INFORMATION APPENDIX 3550 LCR Meter Instruction Manual...

  • Page 82: Interfacing To The 3550

    External Trigger (Pins 4 & 29) – Used with the CONTROL PANEL/EXT input. The 3550 will take measurements when the CONTROL PANEL/EXT input AND External Trigger are true.

  • Page 83: Outputs

    Control I/O Connector cont’d: Outputs The 3550 has 5 data output lines available for external monitoring. Each of the data outputs are optically isolated and current limited through the use of a constant current diode as shown in the illustration below: Figure 5.2 –...

  • Page 84: Timing Diagrams

    Programming and Interfacing 3550 LCR Meter Instruction Manual Control I/O Connector cont’d: Timing Diagrams Figure 5.3a – Test Busy Operation MEASURE START MEASURE TEST BUSY Figure 5.3b – Measure End Operation GO/NO-GO DATA OUT MEASURE Figure 5.3c - GO/NO-GO Operation...

  • Page 85: Table 5.1 – Connector Pin Designations

    Programming and Interfacing 3550 LCR Meter Instruction Manual Control I/O Connector cont’d: Table 5.1 - Connector Pin Designations Signal Name Signal Name EXT POWER EXT POWER EMITTER COMMON EMITTER COMMON CONTROL PANEL/EXT (A) CONTROL PANEL/EXT (K) EXTERNAL TRIGGER (A) EXTERNAL TRIGGER (K)

  • Page 86: Table 5.2 – Control I/O Function Summary

    Programming and Interfacing 3550 LCR Meter Instruction Manual Control I/O Connector cont’d: Table 5.2 - Control I/O Function Summary Item PIN No. Functions 5, 30 *PANEL 6, 31 7, 32 8, 33 PANEL *CONTROL PANEL/EXT 3, 28 *EXTERNAL TRIGGER ON (5~15ms)

  • Page 87: Sample Diagram Of External Connections To Sequencer

    Programming and Interfacing 3550 LCR Meter Instruction Manual Control I/O Connector cont’d: Figure 5.4 - Sample Diagram of External Connections to Sequencer CONTROL PANEL EXT (A) 5~24 VDC CONTROL PANEL OUTPUT UNIT EXT (K) EXTERNAL TRIGGER (A) EXTERNAL TRIGGER(K) INPUT UNIT...

  • Page 88: Rs-232C

    3550 LCR Meter Instruction Manual RS-232C Interface Cable The interface is based on RS-232C. The 3550 is designed to act as the DTE side, so please use a cross cable when connecting with a personal computer or other controller unit. Input Format Remote In-Commands To activate the RS-232C, send the "REN"...
  • Page 89 "LEV1.248E00" (Set the Measurement Voltage to 1.24V) The 3550 will automatically reassign voltage levels if the absolute maximum levels are exceeded. As shown above, any voltage defined with less than 0.01V resolution will automatically be truncated to 0.01V resolution. Voltage levels exceeding 5.00V will automatically become 5.00V.
  • Page 90 100kHz ~ 999kHz "FRE1.00E6" ~ "FRE5.00E6" 1.00MHz ~ 5.00MHz Because the 3550 uses exponential number formatting for the test frequency, variations of the above format may be used. To set 100kHz, the following methods are also valid: e.g.) "FRE1.00E5" –OR- "FRE10.0E4"...

  • Page 91: Table 5.3A – Command Summary

    Programming and Interfacing 3550 LCR Meter Instruction Manual RS-232C Table 5.3a – Command Summary Program Function Content Remarks Code *PAN0 Panel Panel Number PAN9 Measurement Item "L" *FA1 Measurement Item "C" DISPLAY A Measurement DISPLAY A Measurement Item "R" Function Measurement Item Change Measurement Item "|Z|"...

  • Page 92: Table 5.3B – Command Summary Cont'd

    Programming and Interfacing 3550 LCR Meter Instruction Manual RS-232C Table 5.3b – Command Summary cont’d Program Remarks Function Content Code Service Request SRQ Settings for GPIB Internal Trigger Address Command GET Start Measurement Start-Up External Trigger Start by "MAN" Trigger...

  • Page 93: Table 5.3C – Command Summary Cont'd

    Programming and Interfacing 3550 LCR Meter Instruction Manual RS-232C Table 5.3c – Command Summary cont’d Program Remarks Function Content Code Information on the Software Soft Version Version Spot Correction Input Spot Correction Select from “SP1” Number 1 to 3 Spot Correction...

  • Page 94: Table 5.4 - Comparator Instructions

    Programming and Interfacing 3550 LCR Meter Instruction Manual RS-232C Table 5.4 - Comparator Instructions Function Program Code Content Remarks Comparator OFF Comparator Comparator ON Absolute Value Setting Absolute Value Setting Comparator Comparator Mode % Setting % Setting Comparator Bin Number Sorting Category BIN No.(1 9)

  • Page 95: Data Output Format For Measurement Settings

    Programming and Interfacing 3550 LCR Meter Instruction Manual RS-232C Data Output Format for Measurement Settings Output Format Sample 0000 _ P1 _ 1.00 E03 Hz _ OV _ +1.0795 E00 V _ +1.0771 E-03 A, R P _+1.0022 E03 R, GO, N _ A0 _ -1.1874 E03 R, GO, BIN1, GO...

  • Page 96: Table 5.5A – Data Output Code Functions

    Programming and Interfacing 3550 LCR Meter Instruction Manual RS-232C Table 5.5a - Data Output Code Functions Number Output Code Content **** Index Number (0001~9999) Panel Number (0~9) **.* Measurement Frequency Temp. Value *.** ***. e.g.) 42.0Hz "42.0": 100Hz "100.": 1.00kHz "1.00"...

  • Page 97: Table 5.5B – Data Output Code Functions Cont'd

    Programming and Interfacing 3550 LCR Meter Instruction Manual RS-232C Table 5.5b - Data Output Code Functions cont’d: Number Output Code Content DISPLAY A Display Unit For Inductance Measurement For Capacity Measurement For Resistance, Impedance Measurement For Admittance Measurement LOW NO-GO...

  • Page 98: Monitor Output Format

    Programming and Interfacing 3550 LCR Meter Instruction Manual RS-232C Monitor Output Format Output in Relation to Monitor Command "MON" For all 10 panels, (0~9) the PANEL No., DISPLAY A Function, DISPLAY B Function, CIRCUIT MODE, RANGE, Measurement Signal Frequency and Measurement Signal Voltage will be outputted and divided by spaces.
  • Page 99 Programming and Interfacing 3550 LCR Meter Instruction Manual RS-232C Monitor Output Format Output in Relation to Limit Monitor Command "LIM" Absolute Value Settings Mode This will output the PANEL No., BIN No., LOW LIMIT, and HIGH LIMIT for BIN No.1 No.9 in the order of DISPLAY A and then DISPLAY B.
  • Page 100 Programming and Interfacing 3550 LCR Meter Instruction Manual RS-232C Monitor Output Format Output in Relation to Limit Monitor Command "LIM" % Setting Mode Output Format Sample P1_BIN1_CP1_+10.000E-03H_005.00%/006.00%_+1.0000E00R_010.00%/010.00% P1_BIN2_CP1_+10.000E-03H_010.00%/010.00%_+1.0000E00R_020.00%/020.00% P1_BIN3_CP1_+10.000E-03H_020.00%/020.00%_+1.0000E00R_030.00%/030.00% P1_BIN4_CP1_+0.0000E-00H_-------/-------_+0.0000E00R_-------/------- P1_BIN5_CP1_+0.0000E-00H_-------/-------_+0.0000E00R_-------/------- P1_BIN6_CP1_+0.0000E-00H_-------/-------_+0.0000E00R_-------/------- P1_BIN7_CP1_+0.0000E-00H_-------/-------_+0.0000E00R_-------/------- P1_BIN8_CP1_+0.0000E-00H_-------/-------_+0.0000E00R_-------/------- P1_BIN9_CP1_+0.0000E-00H_-------/-------_+0.0000E00R_-------/------- 16 21 16 21 1 - Panel Number...
  • Page 101 Programming and Interfacing 3550 LCR Meter Instruction Manual RS-232C Table 5.6a - Monitor Output Code Functions Number Output Code Content Panel Number( * :1~9) Inductance Measurement (L) Capacity Measurement (C) Resistance Measurement (R) Impedance Measurement (|Z|) Admittance Measurement (|Y|) Loss Coefficient Measurement (D)

  • Page 102: Table 5.6B – Monitor Output Code Functions Cont'd

    Programming and Interfacing 3550 LCR Meter Instruction Manual RS-232C Table 5.6b - Monitor Output Code Functions cont’d Number Output Code Content Limit Values( 15 Minimum, 16 Maximum ) (Inductance Measurement) (Capacity Measurement) (Resistance, Serial Equivalent Resistance, Parallel ±**.***E+**XX Equivalent Resistance, Reactance)

  • Page 103: Rs-232C Hardware And Computer Settings

    1030 is the setting for the "break-in" (interruption) action by the computer. When the power for the 3550 is turned on, the 3550 sends the text signal "3550" to the computer in order to determine whether a control device exists on the computer. The computer receives the signal, and then sends signals to establish the necessary basic settings within the 3550 main unit.
  • Page 104 1180 IF LOC(1) <> 0 THEN GOTO 1200 1190 GOTO 1290 1200 GOSUB *WAIT10 1210 W$ = INPUT$(LOC(1),#1) 1220 D$ = LEFT$(W$,6):F = 1 1230 IF(D$ = "3550" AND KAN = 0)THEN GOTO 1260 1240 PRINT LEFT$(W$,LEN(W$)-3) 1250 GOTO 1290 1260 PRINT#1,"E3 REN O1" 1270 PRINT D$...
  • Page 105 232C, panel 2, TO trigger 01. The 3550 can store 10 pages of settings. However, the initial setting of the trigger is the internal trigger for EO, so it is necessary to change the trigger mode to the mode of the external TO command immediately after changing the panel number.
  • Page 106 1280 IF LOC(1) <> 0 THEN GOTO 1300 1290 GOTO 1390 1300 GOSUB *WAIT10 1320 D$ =INPUT$(LOC(1),#1):PRINT D$ 1330 D$=LEFT$(D$,6):F = 0 1340 IF D$ = "3550" THEN GOTO 1360 1350 GOTO 1390 1360 PRINT#1,"E3 REN O1" 1380 KAN = 1:GOSUB *WAIT10 1390 COM ON: RETURN...
  • Page 107 Programming and Interfacing 3550 LCR Meter Instruction Manual RS-232C Sample programs for RS-232C SAMPLE2.BAS cont’d: Note 1: In Line 1400, WAIT10 may need be adjusted according to the speed of the computer. This program was tested on a Epson PC 486 Note AU DX4. Make adjustments for your computer if necessary.

  • Page 108: The Gpib Interface (Optional)

    Part #3505, is the optional GPIB communications board offered with the 3550 LCR Meter. Installing the board onto the main unit of the 3550 LCR Meter makes remote control and data output possible. After the 3505 has been installed into the 3550, it will have the capability to perform both "talker"...

  • Page 109: Installation Of The Gpib Board

    When installing this option board onto the main unit, follow the following directions: 1. Turn OFF the power of the 3550 and remove the AC line cord. Remove screws “1” and “2” of the cord hook on the upper part of the rear side, and proceed to remove the top cover by pulling it rearward.

  • Page 110: Figure 5.4B – Side View

    Programming and Interfacing 3550 LCR Meter Instruction Manual The GPIB Interface Installation of the GPIB Board, Option #3505 cont’d: Figure 5.4b – Side View Slide the GPIB card into the slot and tighten screws “3” and “4” . 4. Then, connect the cable “6” of the GPIB board with the connector of the Control Board “5”.

  • Page 111: Local Key Switch

    On the front of the main unit, there are 4 LED's displaying the interface status of GPIB. They light up under the following circumstances: [SRQ]: An SRQ (service request) is being sent from the 3550 to the GPIB bus line. [LTN]: The 3550 is set to be the Listener [TLK]: The 3550 is set to be the Talker [RMT]: The 3550 is being controlled remotely.

  • Page 112: Output Status Bits For Service Requests

    Bit0: When data to be output is ready to go, this will become "1". Additional Notes for Using the GPIB Interface 1) Almost all of the switches on the front and rear panel of the 3550 can be controlled remotely through an external controller.

  • Page 113: Programming Examples

    The GPIB Interface Programming Examples Below is a sample program for remotely controlling the 3550 using the GPIB controller. In this program, measurement is carried out while changing the frequency. The example here is based on the commonly used PC-9801(NEC).
  • Page 114 Programming and Interfacing 3550 LCR Meter Instruction Manual The GPIB Interface Programming Examples GET Trigger 110 CLS 120 ISET IFC 130 FOR I=0 TO 100000! : NEXT I 140 ISET REN 150 CMD DELIM = 0 160 PRINT @5;"ren"@ 170 PRINT @5;"s0 e1 o2"@...
  • Page 115 Service Information INSTRUMENT DESCRIPTION PREPARATION FOR USE QUICK START INSTRUCTIONS OPERATING INSTRUCTIONS PROGRAMMING & INTERFACING SERVICE INFORMATION APPENDIX Model 3550 LCR Meter Instruction Manual...

  • Page 116: Warranty Limitations

    TEGAM service center with shipping charges prepaid. TEGAM Inc. shall pay for the return of the product to the customer if the shipment is to a location within the country in which the TEGAM service center is located. The customer shall be responsible for paying all shipping, duties, taxes, and additional costs if the product is transported to any other locations.

  • Page 117: Repair Parts

    Service Information Model 3550 LCR Meter Instruction Manual Repair Parts The Model 3550 has no user replaceable parts. Available accessories are listed in Section I.

  • Page 118: Troubleshooting

    3550 are specially designed to minimize the effects of external noise to the measurement signal. Verify that there are no sources of noise in close proximity to the 3550, test leads, power leads, or test fixture. Sources of noise such as CRTs, relays, and other switching devices are primary causes for erratic readings.

  • Page 119: Preparation For Repair Or Calibration Service

    Model 3550 LCR Meter Instruction Manual Preparation for Repair or Calibration Service: Once you have verified that the cause for 3550 problem cannot be solved in the field and the need for repair and calibration service arises, contact TEGAM customer service to obtain an RMA, (Returned Material Authorization), number.

  • Page 120: Expedite Repair And Calibration Form

    Service Information Model 3550 LCR Meter Instruction Manual Expedite Repair & Calibration Form Use this form to provide additional repair information and service instructions. The completion of this form and including it with your instrument will expedite the processing and repair process.
  • Page 121 Service Information Model 3550 LCR Meter Instruction Manual Model 3550 Verification Procedure: EQUIPMENT NEEDED MODEL NUMBER DESCRIPTION REQUIREMENTS Four terminal BNC male Agilent 42033A 100m STANDARD RESISTOR connectors. .863in centers Four terminal BNC male Agilent 42034A STANDARD RESISTOR connectors. .863in centers...
  • Page 122 Model 3550 Verification Procedure cont’d: PREPARATION FOR TEST: A. SET UP THE TEGAM 3550: 1. Cycle power on the 3550 and depress MANUAL to obtain manufacturer’s default. 2. Set Display A to |Z|. 3. Set Display B to 4. Verify that the frequency is set to 1KHz.
  • Page 123 2. Press TRIGGER, when the measurement changes, record the values for impedance and phase in the 4284A column. 3. Move the standard to the 3550, and press MAN/EXT. Wait for the reading to display and press MAN/EXT again. Record the values for impedance and phase in the 3550 column.
  • Page 124 Service Information Model 3550 LCR Meter Instruction Manual Model 3550 Verification Procedure cont’d: TEGAM 3550 AND AGILENT 4284A MEASUREMENTS STANDARD FREQ LEVEL PARAMETER 4284A 3550 ERROR TOL. VALUE (Hz) (CTS) 100m =(1000A-B)*100 1400 100m =(A-B) *100 =(A-B) *10k =(A-B) *100...
  • Page 125 Service Information Model 3550 LCR Meter Instruction Manual Model 3550 Verification Procedure cont’d: TEGAM 3550 AND AGILENT 4284A MEASUREMENTS STANDARD FREQ LEVEL PARAMETER 4284A 3550 ERROR TOL. VALUE (Hz) (CTS) .1µF 100k =(A-B) *100 .01µF =(A-B) *10k .01µF =(A-B) *100 .1µF...

  • Page 126: Model 3550 Calibration Adjustment Procedure

    Model 3550 Calibration Adjustment Procedure: Please contact TEGAM in order to obtain Calibration or Repair Service for your Instrument. 6-12...
  • Page 127 Appendix SPECIFICATIONS PREPARATION FOR USE QUICK START INSTRUCTIONS OPERATING INSTRUCTIONS PROGRAMMING & INTERFACING SERVICE INFORMATION APPENDIX...

  • Page 129: Setting The Constant Voltage Mode

    Calculating the Maximum Allowable Constant Voltage Setting The figure bellow is an equivalent circuit of the Output Oscillator of the 3550. When connected to a DUT of a known impedance, |Z| and known phase angle, theta; the constant voltage maximum limit for a defined impedance and theta may be determined by using formula 1.

  • Page 130: Setting The Constant Current Mode

    Calculating the Maximum Allowable Constant Current Setting The figure bellow is an equivalent circuit of the Output Oscillator of the 3550. When connected to a DUT of a known impedance, |Z| and known phase angle, theta; the constant current maximum limit may be determined by using formula 2.

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