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Microtest 6577 User Manual

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User Manual
Precision LCR Meter
6577
S/W Ver
Firmware Ver
Date
1.0

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  • Page 1 User Manual Precision LCR Meter 6577 S/W Ver Firmware Ver Date...

  • Page 2: Table Of Contents

    Table of Content 1. SAFETY REGULATIONS ....................1–1 1.1 Summary ......................... 1–1 1.2 AC Power Supply ......................1–1 1.3 Adjustment, Maintenance, and Repairs ................1–1 1.4 Static Electricity ......................1–2 2. DESCRIPTION ........................2–1 3. INSTALLATION ........................ 3–1 3.1 Connecting AC Power ....................3–1 3.2 Instrument Measurement Accessories ................
  • Page 3 6.1 GPIB Control ........................6–1 6.1.1 Summary ........................6–1 6.1.2 Interface Specifications .................... 6–1 6.1.3 Changing GPIB Address ..................6–1 6.1.4 Message Format ....................... 6–2 6.1.5 Transmit Data ......................6–5 6.1.6 Status Report ......................6–6 6.1.7 General Instruction Set ...................6–10 6.1.8 Standard Operation Status Instruction Set .............6–11 6.2 6420 Series Component Specification Instruction Set ...........6–12 6.2.1 Instructions Summary .....................6–12...
  • Page 4 8. THEORETICAL REFERENCE ..................8–1 8.1 Abbreviation ........................8–1 8.2 Formula ........................... 8–1 8.3 Serial/Parallel Connection Conversion ................8–2 8.4 Polarity Guidance ......................8–2 9. MAINTENANCE, SUPPORT, AND SERVICES ..............3 9.1 Guarantee ..........................3 9.2 Maintenance ........................3 9.2.1 Cleaning ........................3 9.2.2 Safety Confirmation .....................

  • Page 5: Safety Regulations

    Improper use of this instrument may result in the possibility of electric shocks. When the instrument malfunctions, please attach a malfunction label to it and strictly prohibit continual use. Microtest Electronics and the sales company are not responsible for personal injuries and component damage due to improper operations. 1.2 AC Power Supply...

  • Page 6: Static Electricity

    1–2 Only technical personnel who have had professional training are allowed to perform adjustment, maintenance, and repair tasks. 1.4 Static Electricity This instrument uses components that are very sensitive to static. 1) The desktop of the work table must be conductive material that is grounded. 2) When the soldering iron and tools are not in use, their contact terminals must be in contact with grounded conductors.

  • Page 7: Description

    2. DESCRIPTION Figure 2-1 6420 Series LCR Meter The 6577 series impedance analyzer provides a 4-point measurement function; the test signal provided is DC and 1MHz, and the drive voltage is from 10mV to 2V rms. The display and control functions of this instrument include: •...

  • Page 8: Installation

    3–1 3. INSTALLATION 3.1 Connecting AC Power This instrument is applicable for both 115V and 230V AC current; power cables that comply with the local country specifications must be used, and connectors applicable to IEC320 connectors must be used for the connection of this instrument. Users must ensure that the ground cable is properly grounded.

  • Page 9: Operations

    4–1 4. OPERATIONS WARNING! This instrument should be operated by personnel who have received training. If this product was not set up or operated according to specifications, it may result in the possibility of electric shocks (for example not properly grounded or touching the power components abnormally);...

  • Page 10: Dc 5V Out

    4–2 OPTIONAL - to interface Handler RJ45 connector to PASS /FAIL signal 4.1.4 DC 5V Out 4.1.4.1 Safety Key(A-B) The two points (A-B) should be short-circuited in order to output current. Figure 4-2 Contact Assignment of the Phone Jack 4.1.5 GPIB Connector This instrument provides a standard GPIB interface, allowing users to easily and quickly connect this instrument to a PC through this interface in order to achieve fast and automatic measurement functions.

  • Page 11: Booting

    Figure 4-2 The 6420 Series Front Panel 4.2.1 Soft Keys The 6577 series instrument has 10 soft key switches that will change with the different screens; their functions are displayed to the right of the screen at corresponding positions of the keys. When users press the soft key switch, the instrument will execute...

  • Page 12: Navigation Keys

    4–4 Figure 4-3 The Soft Keys 4.2.2 Navigation Keys Figure 4-4 The Navigation Keys Press the left and right keys of the navigation key to switch the parameter setting position on the screen; press the up and down of the navigation keys to switch the parameter setting value in that field.

  • Page 13: Data Entry Keypad

    4–5 Figure –The 6420 Series Main Menu Single Measurement/Repetitive Measurement Sngl/Rep allows users to select whether only to measure once or repeat measurement continuously after being triggered. Figure 4-6 Single Shot Mode Figure 4-7 Repetitive Mode Pressing the Trigger key while the instrument is under single measurement status will acquire measurement results once, and the instrument will not perform measurements again.
  • Page 14 4–6 such as D/Q or V/A displayed on that key can be selected. Press the Enter key to end the unit selection function. When an invalid key is pressed, the data on that row will be cleared and an error message will be displayed as shown in Figure Figure 4-9.

  • Page 15: Trimming

    4–7 Key Operation Order Example (characters in Example 1: Provide a measurement parameter setting with an inductance value of 27.39mH. 1) MEASUREMENT MODE: AC Meas, L, Q, Parallel, Show Scale, %. 2) Use the keys to move to the measurement parameter position; the parameter where the cursor is located will be highlighted at this time.

  • Page 16: Executing O/C Trim Or S/C Trim

    4–8 When performing short-circuit trimming S/C Trim a conductive object must be clamped on the instrument clamp or fixture clamp and the clamp distance must be shortened as much as possible; do not clamp the instrument clamps together directly. Doing so will result in being unable to provide 4-cable 4-terminal measurement effects. Figure 4-10 Connections for O/C trimming of Kelvin clips Figure 4-11 Connections for S/C trimming of Kelvin clips 4.3.1 Executing O/C Trim or S/C Trim..

  • Page 17: Actual Measurement Components

    4–9 4.3.1.1 Trim Options Figure 4-13 Trim Options All frequency trims trims will complete the trimming action for all frequencies; this task has to be performed after the instrument clamp or fixture clamp has changed. Other trim options are only used for single tests and when the test frequency range is smaller (the smaller the frequency range the less time is needed for trimming).

  • Page 18: Actual Example

    4–10 Figure 4-14 Will be displayed. 3) Use the soft keys as shown in Figure Figure 4-2 and Figure 4-3 to set the measurement parameters needed; as described in section 4.4.2, do not set above the limit of the component specifications. 4) Connect the component to the fixture or test cable.

  • Page 19: Measurement Mode Parameters

    4–11 Parallel 5) Use the keys to move to the measurement parameter position; the parameter where the cursor is positioned will be highlighted. Use the keys to adjust the parameters so that the parameters are as described below 500mVac 1.5000 kHz Range Auto Speed Med 6) Connect the component to the fixture or test cable;...
  • Page 20 4–12 Q D R G and Parallel/Series will not be displayed on the screen. Q D R G Second Test Condition If the G parameter is selected, the Parallel/Series soft key must be set as Parallel. Parallel/Series Parallel or Series Equivalent Circuit When the first test condition is set so that Parallel or Series equivalent circuits can be selected, press this key to select Parallel or Series equivalent circuit.
  • Page 21 Frequency Frequency position, and then use or data input keys to set the value. 6577 20Hz to 1MHz Range Automatic or manual gear selection can be selected; use the cursor keys to move the cursor to the Range position, and then or data input keys to set the gear.
  • Page 22 4–14 • Use manual fixed gear when auto handler is used to save test time. Manual gear includes 1 to 7 gears. There are four measurement speeds: Slow, Med, Fast, and Max. Speed Selecting slower measurement speeds will increase the number of digits displayed;...

  • Page 23: Advanced Operations

    5–1 5. ADVANCED OPERATIONS This section will provide the user with a guide to: • two-, three- and four-terminal connections • measurement of very small capacitors • measurement of very small inductors • measurement of iron-cored and ferrite inductors 5.1 2, 3, 4 Wire Measurement Mode Wiring The meter has four front panel BNC sockets for screened cable connections to the device under test (DUT).

  • Page 24: Measuring Ferrite Inductors And Iron Cored Inductors

    5–2 a 5cm length of 1mm diameter wire has an inductance of 50nH a 5cm length of 2mm diameter wire has an inductance of 40nH The known inductance of the wire used for the S/C trim should be subtracted from the measured DUT inductance.

  • Page 25: Multi-Step Mode - Settings

    5–3 5.5.1 Multi-step Mode – Settings Figure 5-1 MULTI STEP – Set Display Up to 30 steps can be defined by highlighting the parameter, then entering the frequency with the data entry keypad. The navigation keys scroll through each entry in turn. 5.5.1.1 Multi-step Mode –...

  • Page 26: Status Page

    5–4 When the Start soft key or the Trigger key is pressed, the meter will measure the component step by step and the measurement values will be displayed. Also the meter will report PASS, HI or LO according to the table below. Figure 5-2 shows the results of running the multi-step test set up in section PASS Measurement result is within the limits set.

  • Page 27: Status

    5–5 Figure 5-3 The STATUS Page There are four parameters which may be altered from within the status page: Line frequency, Beep , External trigger delay and GPIB address. 5.6.1 Status Page Parameters Line frequency Selection of Either 50Hz or 60Hz power line frequency. Beep Sets the buzzer state.

  • Page 28: Universal Interface (Gpib)

    6–1 6. UNIVERSAL INTERFACE (GPIB) 6.1 GPIB Control 6.1.1 Summary The GPIB is a parallel port designed to be used for communication between instruments (listeners) and control devices (talkers) such as PCs fitted with a suitable interface card. The interface protocol is defined by the IEEE488.1 standard. Some additional generic capabilities of the listeners and talkers are defined by IEEE488.2.

  • Page 29: Message Format

    6–2 The GPIB address is stored in non-volatile memory. 6.1.4 Message Format A GPIB message is made up of one or more commands. Commands can be separated into two groups, common commands and subsystem commands. The available common commands are defined by IEEE488.2 and are primarily concerned with the instrument’s GPIB configuration, e.g.
  • Page 30 6–3 1) Discrete data This includes words like ON, OFF and ABS. 2) Real Number A floating point number that can be in engineering format or a number with a multiplier suffix K (kilo-), M (mega-) or G (giga-). For example: FREQ 1000.0 FREQ 1E+3 FREQ 0.1E4...
  • Page 31 6–4 :MEAS:FUNC:Z Note that the string starts with ‘:’. This tells the instrument to start from the ‘root’ path. Whenever a terminator is reached (line-feed and/or EOI) the path is reset to the root path, so each new GPIB command string must state the full path in order to work correctly, for example: To set a measurement frequency of 1kHz at a level of 1.0V, the following string can be used:...

  • Page 32: Transmit Data

    6–5 Summary: The following are the rules for negotiating the command hierarchy • On power-up or reset, the current path is set to the root. • Message terminator, line-feed (ASCII 0Ah) or EOI, sets the current path to the root. •...

  • Page 33: Status Report

    6–6 Figure 6-4 GPIB RMU Structure 6.1.5.2 Multiple Items Some commands will generate an RMU containing more than one item of data (e.g. TRIG will generate a first and second result). In this case, each item of response data will be separated by a comma. Note that the maximum number of characters that can be output is 256, any data beyond this will be lost.
  • Page 34 6–7 Meaning True = ‘1’ A summary bit from Questionable Data. This bit is not used, so is always 0. This is a summary bit of error and instrument status messages. True if any new status information is available. Always 0. Always 0.
  • Page 35 6–8 Meaning (True = ‘1’) Name Power On (PON) True when the instrument power supply has been turned OFF and then ON since the last time this register was read. User Request (URQ) Not used. Always 0. Command Error (CME) True if the following command errors occur: An IEEE 488.2 syntax error occurred.
  • Page 36 6–9 6.1.6.4 Event Status Allow Register The event status enable register (ESE) is a mask determining the conditions in which the ESR will set bit 5 of the SBR. It is bit-wise ANDed with the ESR and if the result is not zero then ESB (bit 5) of the SBR is set (see Figure 6-7).

  • Page 37: General Instruction Set

    6–10 Other bits are unused and are 0. 6.1.6.7 Standard Operation Status Event Register This is a 16-bit register; each event bit in the event register corresponds to a condition bit in the standard operation status condition register. According to SCPI recommendation, we define: Meaning (True = ‘1’) True when S/C trimming, O/C trimming, or calibration measurement is completed.

  • Page 38: Standard Operation Status Instruction Set

    6–11 Command Name Description *RST Reset Resets the instrument to a default setting. This command is equivalent to a power-up reset. *TRG Trigger Triggers a direct measurement, but does not return the results to the controller. This is the same as a GET (Group Execute Trigger) command.

  • Page 39: 6420 Series Component Specification Instruction Set

    6–12 6.2 6420 Series Component Specification Instruction Set The sub-system commands are grouped in different modes similar to the local operation. The recommended discipline to control the instrument under GPIB is to select the mode and the type of test first, then change the measurement conditions. Trying to change measurement conditions which are not in the present mode and type of test will be rejected and return an error flag.
  • Page 40 6–13 Command Summary Page :MEAS:NOMinal? Nominal query. 6-23 :MEAS:LIMIT <disc> Set percentage or absolute scale limits. 6-24 :MEAS:LIMIT? Limit type query. 6-24 :MEAS:HIgh-LIMit <real> Set scale high limit. 6-24 :MEAS:HIgh-LIMit? High limit query. 6-24 :MEAS:LOw-LIMit <real> Set scale low limit. 6-25 :MEAS:LOw-LIMit? Low limit query.
  • Page 41 6–14 Command Summary Page :MULTI:NEW <filename> Create a file under a new name. 6-31 :MULTI:SAVE Save currently edited file. 6-32 MULTI:LOAD <filename> Load an existed file to run or edit. 6-32 :CAL Select calibrate mode / path. 6-43 :CAL:OC-TRIM <integer> Perform open circuit trimming.
  • Page 42 6–15 MEASUREMENT MODE :MEAS Select measurement mode. Parameters: None. Response: None. :MEAS:TEST Select test sub-path within measurement mode. Parameters: None. Response: None. :MEAS:TEST:AC Select AC measurement. Parameters: None. Response: None. :MEAS:TEST:RDC Select Rdc measurement. Parameters: None. Response: None.
  • Page 43 6–16 MEASUREMENT MODE :MEAS:TEST? Measurement test query. Parameters: None. Response: 0 AC measurement type. 1 Rdc measurement type. :MEAS:TRIGger Trigger a measurement using the current settings. Parameters: None. Response: For AC measurements the response will be the first and second measurements separated by a comma.
  • Page 44 6–17 MEASUREMENT MODE :MEAS:LEVel <real> :MEAS:LEVel? Set drive level for currently selected Drive level query. test. Parameters: Parameters: None. The required level in Volt. The unit Response: suffix ‘V’ is optional. Returns the current test level in Example: MEAS:LEV 1.2V engineering format.
  • Page 45 6–18 MEASUREMENT MODE :MEAS:RANGE <disc> :MEAS:RANGE? Select the required measurement range Returns current measurement condition for AC and RDC tests. range. Parameters: Parameters: The following parameters are valid: None. AUTO Auto-ranging. Response: HOLD Hold current range. Returns the measurement range as an integer according to this table: 1 to 7 Range 1 to 7...
  • Page 46 6–19 MEASUREMENT MODE :MEAS:FUNC Select function sub-path within measurement mode. Parameters: None. Response: None. :MEAS:FUNC:C, L, X, B, Z, Y, Q, D, R, G Select first or second AC measurement function. Selecting first measurement: :MEAS:FUNC:C Capacitance. :MEAS:FUNC:L Inductance. :MEAS:FUNC:X Reactance. :MEAS:FUNC:B Susceptance.
  • Page 47 6–20 MEASUREMENT MODE :MEAS:FUNC:MAJOR? First AC function query. Parameters: None. Response: Returns the measurement type according to this table: Capacitance Inductance. Reactance. Susceptance. Impedance. Admittance. Example: 4 indicates that the first measurement is impedance (Z). :MEAS:FUNC:MINOR? Second AC function query. Parameters: None.
  • Page 48 6–21 MEASUREMENT MODE :MEAS:SCALE <disc> :MEAS:SCALE? Show / Hide the scale bar. Returns the current status of the scale bar. Parameters: Parameters: The following parameters are valid: None. Show scale. Response: Hide scale. Returns scale setting according to Example: :MEAS:SCALE OFF this table: will turn off the scale.
  • Page 49 6–22 MEASUREMENT MODE :MEAS:LIMIT <disc> :MEAS:LIMIT? Set percentage or absolute scale limits. Limit type query. Parameters: Parameters: The following discrete parameters None. are valid: Response: Absolute limits. Returns scale limits PERC Percentage limits. according to this table: Example: :MEAS:LIMIT PERC Absolute scale.
  • Page 50 6–23 MEASUREMENT MODE :MEAS:LOw-LIMit <real> :MEAS:LOw-LIMit? Set scale low limit. Returns current scale percentage low limit. Parameters: Parameters: The required low limit. No unit should be supplied: the nominal unit None. is used. Response: Example: :MEAS:LO-LIM -5.0 The current low limit in engineering will set a low limit of -5.0% of format.
  • Page 51 6–24 MULTI-STEP MODE :MULTI Select multi-step mode / path. Parameters: None. Response: None. :MULTI:SET Switch to the multi-step set-up page. Parameters: None. Response: None. :MULTI:RUN Switch to the multi-step run page. Parameters: None. Response: None. :MULTI:TEST :MULTI:TEST? Select the step to edit. Return the number of the step that is currently being edited.
  • Page 52 6–25 MULTI-STEP MODE :MULTI:FUNC :MULTI:FUNC? Set measurement function for currently Parameters: selected step. None. Parameters: Response: The following discrete parameters Returns measurement type are valid: according to LS, LP, Q, CS, CP, D, Z, PHASE, This table: RS, RP, X, G, B, Y, RDC. Response: None.
  • Page 53 6–26 MULTI-STEP MODE :MULTI:LEVel <real> :MULTI:LEVel? Set drive level for currently selected Drive level query of currently selected step. step. Parameters: Parameters: The required level in Volt. The unit None. suffix ‘V’ is optional. Response: Example: MULTI:LEV 1.2V Returns the current test level in MULTI:LEV 200m engineering format.
  • Page 54 6–27 MULTI-STEP MODE :MULTI:HIgh-LIMit <real> :MULTI:HIgh-LIMit? Set the higher test limit of the currently Returns the high limit value of the selected step. currently selected step. Parameters: Parameters: The required higher limit. None. example: :MULTI:HI-LIM 10.0 Response: will set a high limit to 10. The high limit value in engineering format.
  • Page 55 6–28 MULTI-STEP MODE :MULTI:DEL Remove the current step. Parameters: The step number in the range 1 to 30 Example: MULTI:DEL 1 will delete the top step. Response: None. :MULTI:TRIGger Starts a run of multi-step measurements. Parameters: None. Response: None. :MULTI:RES? Query the results of the multi-step test.
  • Page 56 6–29 MULTI-STEP MODE MULTI:NEW <filename> Create a file under a new name to store the multi-step data. Parameters: A File name, 8 characters at most. Example: :MULTI:NEW DEMO will create a new file with the name DEMO. Response: None. MULTI:SAVE Store current multi-step data to currently selected file.
  • Page 57 6–30 CALIBRATE MODE :CAL Select calibrate mode / path. Parameters: None. Response: None. :CAL:OC-TRIM <integer> Perform open circuit trimming. Parameters: The required trim type. Spot trim. Up to 10kHz. Up to 100kHz. All frequency. Example: :CAL:OC-TRIM 4 would perform an open circuit trim across the whole frequency range of the unit. Response: None.
  • Page 58 6–31 CALIBRATE MODE :CAL:SC-TRIM <integer> Perform short circuit trimming. Parameters: The required trim type. Spot trim. Up to 10kHz. Up to 100kHz. All frequency. Example: :CAL:SC-TRIM 1 would perform a short circuit trim at the current frequency. Response: None. :CAL:RES? Returns the result of the most recent trim or calibration performed.
  • Page 59 6–32 ROOT COMMANDS :TRIGger Trigger a measurement in the current mode. Parameters: None. Response: The measurement result depending on the mode. :TRIGger:DELAY <real> :TRIGger:DELAY? Set the trigger delay time for the Query the external trigger delay time. external Parameters: trigger. None.
  • Page 60 6–33 ROOT COMMANDS :LOC-TRIG <disc> :LOC-TRIG? Select local trigger condition. When Query the local trigger condition. local trigger is ON the trigger button on Parameters: the front panel can be used to take a None. measurement, all other functions being under remote control.
  • Page 61 6–34 ROOT COMMANDS :MODE? Query the currently selected operating mode. Parameters: None. Response: The current mode: Main menu. Measurement. Multi-step. Calibrate. Status. Example: 1 would indicate that Measurement Mode is selected. :DUMP-BMP Returns the display as a windows compatible bitmap. The data conforms to IEEE 488.2 or SCPI ‘Indefinite Length Arbitrary Block Response Data’.

  • Page 62: Program Example

    6–35 ROOT COMMANDS :BEEP <disc> :BEEP? Set the buzzer function. Query the buzzer condition. Parameters: Parameters: The required state: None. OFF Buzzer is disabled. Response: PASS Turns on the buzzer if test The buzzer condition. result is pass. PASS FAIL Turns on the buzzer if test FAIL result is fail.

  • Page 63: Example 2

    6–36 ' Platform : QuickBasic 4.5 ' Description : ' This program will ask the instrument to identify itself. ' It assumes the instrument is called 'WK' in the National ' Instruments configuration. ' ************************************************************** ' $INCLUDE: 'QBDECL.BAS' ' National Instruments include file. buf$ = SPACE$(200) ' Buffer for GPIB response.

  • Page 64: Example 3

    6–37 ' Platform : QuickBasic 4.5 ' Description : ' This program will set-up and run a single Z+Angle measurement ' on a component. ' This program assumes that the GPIB configuration is correct ' enough to be able to run example program 1 correctly. ' ************************************************************** ' $INCLUDE: 'QBDECL.BAS' ' National Instruments include file.
  • Page 65 6–38 ' of the unit. ' This program assumes that the GPIB configuration is correct ' enough to be able to run example program 1 correctly. ' ************************************************************** ' $INCLUDE: 'QBDECL.BAS' ' National Instruments include file. CLS ' Clear the screen. ' Initialise the GPIB CALL IBFIND("WK", wk%) ' Look for 'WK'.

  • Page 66: Example 4

    6–39 6.3.4 Example 4 DECLARE FUNCTION GPIBQuery$ (id%, Query$) ' ************************************************************** ' Program 4 : Multi-step mode Version 1.0 ' Platform : QuickBasic 4.5 ' Description : ' This program sets up and runs a simple 4 frequency measurement ' in Multi-step mode ' ************************************************************** ' $INCLUDE: 'QBDECL.BAS' ' National Instruments include file.

  • Page 67: Series Specifications

    7–1 7. 6420 SERIES SPECIFICATIONS Wayne Kerr Electronics Limited reserves the right to change specification without notice 7.1 Measurement Parameters Any of the following parameters can be measured and displayed: DC Function Resistance (Rdc). AC Functions Capacitance (C), Inductance (L), Resistance (R), Conductance (G), Susceptance (B), Reactance (X), Dissipation Factor (D), Quality Factor (Q),...

  • Page 68: Measurement Speed

    7–2 7.2.1.2 Drive Level (AC & DC Measurements) Open circuit voltage:10mV to 2V for AC Open circuit voltage:100mV to 2V for DC Short circuit current: 20mA Signal source impedance:100Ω nominal Resolution:10mV Accuracy:2%±5mV 7.3 Measurement Speed Four selectable speeds for all measurement functions. Selecting slower measurement speed increases reading resolution and reduces measurement noise by averaging.

  • Page 69: Display Range

    7–3 7.4 Display Range 0.01mΩ to 1GΩ R, Z , X G, Y, B 0.001nS to 1kS 0.1nH to 100kH 0.001pF to 1F 0.00001 to 1000 0.01 to 1000 0.01mΩ to 100MΩ 7.5 Operation Mode 7.5.1 Measurement Mode Selection of any measurement parameter and test condition. Single-level function-menu controlled by keypad and soft keys.
  • Page 70 7–4 Except on the highest and lowest hardware measurement ranges, the accuracy chart also apply to medium speed. For maximum and fast speed, the figure must be doubled. Measurement accuracy for the multi-step mode conforms to the maximum speed setting.

  • Page 71: Precision Map

    7–5 7.8 Precision Map Accuracy chart define the measurement ranges available, at specified accuracies, over the available frequency band. All curves assume that Slow measurement speed is used, that the meter has been trimmed at the frequency and level used for measurements, factory calibration are valid and that the component under test is pure.

  • Page 72: Z| Vs L, C Chart

    7–6 7.8.2 |Z| vs L, C Chart...

  • Page 73: Z|, |Y|, L, C, R, X, G And B Accuracy

    7–7 7.8.3 |Z|, |Y|, L, C, R, X, G and B Accuracy For high impedance value: Ae[%] = ((A + 0.0000001*Zx) * Kv * Kt) For low impedance value Ae[%] = ((A + 0.1/Zx) * Kv * Kt) Where, A= Accuracy from accuracy chart Zx= Measured value of unknown component Kv= Test voltage factor (Refer to Table A) Kt= Temperature factor (Refer to Table B)
  • Page 74 7–8 Table A. Test voltage factor Level ≧ 1.250 ≧ 0.625 ≧ 0.313 ≧ 0.156 ≧ 0.078 ≧ 0.039 ≧ 0.02 ≧ 0.010 Table B Temperature factor Temperature(°C) 8-18 18-28 28-35...

  • Page 75: Universal Specifications

    7–9 7.9 Universal Specifications 7.9.1 Power Input Voltage 115V AC ±10% or 230V AC ±10% (selectable) Frequency 50/60Hz VA rating 150VA max Input fuse rating 115/230V operation: 3AT The input fuse is in the fuse holder drawer integral to the IEC input connector.

  • Page 76: Installation Details

    7–10 7.10.4 Installation Details II in accordance with IEC664. 7.10.5 Pollution Level 2 (mainly non-conductive). 7.10.6 Safety Complies with the requirements of EN61010-1. 7.10.7 EMC Complies with EN61326 for emissions and immunity.

  • Page 77: Theoretical Reference

    8–1 8. THEORETICAL REFERENCE 8.1 Abbreviation Susceptance (= 1/X) Resistance Capacitance Reactance Dissipation factor (tan δ) Admittance (= 1/Z) Voltage Impedance Ω 2π x frequency Conductance (= 1/R) Current Inductance Subscript s ( ) = series Quality (magnification) factor Subscript p ( ) = parallel 8.2 Formula ...

  • Page 78: Serial/Parallel Connection Conversion

    8–2 8.3 Serial/Parallel Connection Conversion Conversions using the above formulae will be valid only at the test frequency. 8.4 Polarity Guidance Note that, by convention, +ve angle indicates an inductive impedance or capacitive admittance. If capacitance is measured as inductance, the L value will be –ve. If inductance is measured as capacitance, the C value will be –ve.

  • Page 79: Maintenance, Support, And Services

    9. MAINTENANCE, SUPPORT, AND SERVICES 9.1 Guarantee The equipment supplied by is guaranteed against defective material and faulty manufacture for a period of twelve months from the date of dispatch. In the case of materials or components employed in the equipment but not manufactured by us, we allow the customer the period of any guarantee extended to us.

  • Page 80: Support And Services

    2) Inspect the unit and associated wiring for damage e.g. dents or missing parts which might impair the safety or function of the equipment. Look for any signs of overheating or evidence that objects might have entered the unit. 3) Ground Bond: Ensure that 25A DC can flow from exposed metal parts of the unit (not BNC connector outers) to ground with an impedance of less than 100m.
  • Page 81 Headquarters Tel: 886-2-26983877 Fax: 886-2-26984089 Email: marketing@microtest.com.tw sales@microtest.com.tw Suzhou Tel: 86-512-66578260 Fax: 86-512-66578260 Dongguan Tel: 86-769-88482136 Fax：86-769-88482135...

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