MICROTEST 6370, 6371, 6372 LCR Meter User Manual

LCR METER

6370/6371/6372

User Manual

NOV 2011

© MICROTEST CORPORATION 2011

The copyright in this work is vested in MICROTEST CORPORATION and this document is issued for the purpose only for which it is supplied. No licence is implied for the use of any patented feature. It must not be reproduced in whole or in part, or used for tendering or manufacturing purposes except under an agreement or with the consent in writing of and then only on the condition that this notice is included in any such reproduction. Information furnished is believed to be accurate but no liability in respect of any use of it is accepted by

MICROTEST CORPORATION.

CONTENTS

1.

SAFETY ........................................................................................................................... 1–1

1.1

1.2

1.3

1.4

General ......................................................................................................................... 1–1

AC Power Supply......................................................................................................... 1–2

Adjustment, Maintenance and Repair .......................................................................... 1–2

Static Electricity........................................................................................................... 1–3

2.

INTRODUCTION........................................................................................................... 2–1

3.

INSTALLATION ............................................................................................................ 3–1

3.1 AC Line Connections................................................................................................... 3–1

3.2 Location ....................................................................................................................... 3–1

4.

OPERATION................................................................................................................... 4–1

4.1 The Rear Panel ............................................................................................................. 4–1

4.2 The Front Panel............................................................................................................ 4–2

4.3 Switching the unit on ................................................................................................... 4–2

4.4 Switching the unit off................................................................................................... 4–2

4.5 Indicators...................................................................................................................... 4–2

4.6 Measurement Connections........................................................................................... 4–3

4.7 Keys ............................................................................................................................. 4–3

4.7.1 Para...................................................................................................................... 4–3

4.7.2 Cal ........................................................................................................................ 4–3

4.7.3 Comp .................................................................................................................... 4–3

4.7.4 Mode .................................................................................................................. 4–3

4.7.5 Save/Rcl................................................................................................................ 4–3

4.7.6 Conf ...................................................................................................................... 4–4

4.7.7 Local..................................................................................................................... 4–4

4.7.8 Bias....................................................................................................................... 4–4

4.7.9 Numeric Keypad................................................................................................... 4–4

4.7.10 Navigation Keys ................................................................................................... 4–4

4.7.11 Enter ..................................................................................................................... 4–4

4.7.12 Trig ....................................................................................................................... 4–4

4.7.13 Soft keys................................................................................................................ 4–4

4.7.14 Reset ..................................................................................................................... 4–4

4.8 Instrument Set-up......................................................................................................... 4–4

4.8.1 System Configuration ........................................................................................... 4–4

4.8.2 Calibrate Mode..................................................................................................... 4–6

4.8.3 Parameters ........................................................................................................... 4–7

4.8.4 Comparator .......................................................................................................... 4–8

4.8.5 Deviation Mode .................................................................................................... 4–9

4.8.6 Trigger................................................................................................................ 4–10

4.8.7 Save/Rcl.............................................................................................................. 4–10

4.9 Measuring a Component ............................................................................................ 4–12

4.9.1 General............................................................................................................... 4–12

4.9.2 Examples ............................................................................................................ 4–12

5.

GENERAL PURPOSE INTERFACE BUS (GPIB) ..................................................... 5–1

5.1 Introduction .................................................................................................................. 5–1

5.1.1 Interface Specification .......................................................................................... 5–1

5.1.2 Changing the GPIB Address................................................................................. 5–1

5.2 Returning to Local Mode ............................................................................................. 5–2

5.3 Getting Data from the 6372.......................................................................................... 5–2

5.4 Numeric data NR1, NR2, NR3..................................................................................... 5–2

5.5 Control sequence .......................................................................................................... 5–2

5.6 Status Reporting ........................................................................................................... 5–3

5.6.1 Status Byte Register (SBR).................................................................................... 5–3

5.6.2 Service Request Enable Register (SRE)................................................................ 5–4

5.6.3 Standard Event Status Register (ESR) .................................................................. 5–4

5.6.4 Standard Event Status Enable Register (ESE)...................................................... 5–5

5.6.5 Standard Operation Status Register ..................................................................... 5–6

5.6.6 Operation Status Register..................................................................................... 5–6

5.6.7 Questionable Status Register................................................................................ 5–7

5.7 Command Summary..................................................................................................... 5–7

5.7.1 Common Commands............................................................................................. 5–7

5.7.2 Operation Status Commands ................................................................................ 5–8

5.7.3 Device-Specific Commands .................................................................................. 5–9

5.8 Error Massages........................................................................................................... 5–31

5.9 Programming Examples ............................................................................................. 5–31

5.9.1 Set the Power Line Frequency to 50 Hz ............................................................. 5–31

5.9.2 Select the Z and Phase Measurement Parameters.............................................. 5–31

5.9.3 Select 100 Hz as the Test Signal Frequency ....................................................... 5–31

5.9.4 Select 1V as the Test Signal Level ...................................................................... 5–32

5.9.5 Hold the Measurement Range ............................................................................ 5–32

5.9.6 Perform Short Circuit Correction ...................................................................... 5–32

5.9.7 Set the Measurement Speed to Slow ................................................................... 5–32

5.9.8 Save and Recall Instrument Settings................................................................... 5–32

5.9.9 Trigger and Retrieve a Measurement ................................................................. 5–32

6.

SERIAL BUS (RS-232) ................................................................................................... 6–1

6.1 Protocol ........................................................................................................................ 6–1

6.2 Serial Port Connections ................................................................................................ 6–1

6.3 Commands.................................................................................................................... 6–1

7.

SPECIFICATION ........................................................................................................... 7–1

7.1 Measurement Parameters………………………………………………. 7-1

7.2 Measurement ranges……………………………………………………. 7-1

7.3 Measurement Speeds…………………………………………………… 7-1

7.4 AC Frequency Range……………………………………………………7-2

7.5 AC Frequency Connection …..………………………………………….7-3

7.6 Measurement Accuracy …………………………………………………7-3

7.7 Measurement Speed ……………………………………………………. 7-6

7.8 Comparator test mode ………………………………………………….. 7-7

7.9 Ranging ………………………………………………………………… 7-7

7.10 Trigger ………………………………………………………………… 7-7

7.11 Display and indicators ………………………………………………… 7-7

7.12 Memory ……………………………………………………………….. 7-7

7.13 Interfaces ……………………………………………………………… 7-7

7.14 Power supply ………………………………………………………….. 7-7

7.15 Environmental ………………………………………………………… 7-7

7.16 Safety ………………………………………………………………….. 7-7

7.17 EMC ……………………………………………………………………7-7

7-18 Mechanical ……………………………………………………………. 7-7

8.

MAINTENANCE, SUPPORT AND SERVICES ......................................................... 8–1

8.1 Guarantee ..................................................................................................................... 8–1

8.2 Maintenance ................................................................................................................. 8–1

8.2.1 Cleaning ............................................................................................................... 8–1

8.2.2 Safety Checks........................................................................................................ 8–1

8.3 Support and Service ..................................................................................................... 8–2

ILLUSTRATIONS

Figure 2-1 6372 LCR Meter...................................................................................................... 2–1

Figure 4-1 Rear Panel................................................................................................................ 4–1

Figure 4-2 Front Panel.............................................................................................................. 4–2

Figure 4-3 System Configuration screen................................................................................... 4–5

Figure 4-4 Calibrate Mode screen............................................................................................. 4–6

Figure 4-5 Please Wait screen................................................................................................... 4–6

Figure 4-6 Out of Limit error .................................................................................................... 4–6

Figure 4-7 Primary and Secondary Parameters......................................................................... 4–7

Figure 4-8 Comparison with absolute resistance limits and reactance turned off.................... 4–8

Figure 4-9

Deviation Mode with absolute units for R, a 10Ω reference and X turned off....... 4–9

Figure 4-10 The Trigger Mode soft key.................................................................................. 4–10

Figure 4-11 Save/Recall .......................................................................................................... 4–10

Figure 4-12 Save set-up........................................................................................................... 4–11

Figure 4-13 Recall set-up ........................................................................................................ 4–11

Figure 4-14 Recall error .......................................................................................................... 4–11

Figure 4-15 Inductance Measurement..................................................................................... 4–13

Figure 4-16 Resistance Measurement ..................................................................................... 4–15

Figure 4-17 Impedance Measurement..................................................................................... 4–16

Figure 4-18 Capacitance Measurement................................................................................... 4–17

Figure 5-1 Status Byte Register ................................................................................................ 5–3

Figure 5-2 Status Byte Register ................................................................................................ 5–4

Figure 5-3 Standard Event Status Register................................................................................ 5–5

Figure 5-4 Event Status Byte Register ...................................................................................... 5–5

Figure 5-5 Standard Operation Status Group ............................................................................ 5–6

Figure 5-6 Operation Status Condition Register ....................................................................... 5–6

Figure 5-7 Operation Status Event Register.............................................................................. 5–7

Safety

1. SAFETY

1.1 General

This equipment has been designed to meet the requirements of EN61010-1 ‘Safety requirements for electrical equipment for measurement, control & laboratory use’ and has left the factory in a safe condition.

The following definitions in EN61010-1 are applicable:

1–1

OPERATOR

RESPONSIBLE BODY

Person operating equipment for its intended purpose.

Note: The OPERATOR should have received training appropriate for this purpose.

Individual or group responsible for the use and maintenance of equipment and for ensuring that operators are adequately trained.

The RESPONSIBLE BODY must ensure that this equipment is only used in the manner specified. If it is not used in such a manner, the protection provided by the equipment may be impaired.

This product is not intended for use in atmospheres which are explosive, corrosive or adversely polluted (e.g. containing conductive or excessive dust). It is not intended for use in safety critical or medical applications.

The equipment can cause hazards if not used in accordance with these instructions. Read them carefully and follow them in all respects.

Do not use the equipment if it is damaged. In such circumstances the equipment must be made inoperative and secured against any unintentional operation.

MICROTEST CORPORATION and the associated sales organizations accept no responsibility for personal or material damage, or for any consequential damage that results from irresponsible or unspecified operation or misuse of this equipment.

1–2 Safety

1.2 AC Power Supply

Power cable and connector requirements vary between countries. Always use a cable that conforms to local regulations, terminated in an IEC320 connector at the instrument end.

If it is necessary to fit a suitable AC power plug to the power cable, the user must observe the following colour codes:

WIRE

LIVE

NEUTRAL

GROUND

EUROPEAN

BROWN

BLUE

GREEN/YELLOW

N. AMERICAN

BLACK

WHITE

GREEN

The user must also ensure that the protective ground lead would be the last to break should the cable be subject to excessive strain.

If the plug is fused, a 3-amp fuse should be fitted.

If the power cable electrical connection to the AC power plug is through screw terminals then, to ensure reliable connections, any solder tinning of the cable wires must be removed before fitting the plug.

Before switching on the equipment, ensure that it is set to the voltage of the local AC power supply.

WARNING!

Any interruption of the protective ground conductor inside or outside the equipment or disconnection of the protective ground terminal is likely to make the equipment dangerous. Intentional interruption is prohibited.

1.3 Adjustment, Maintenance and Repair

WARNING!

The equipment must be disconnected from all voltage sources before it is opened for any adjustment, replacement, maintenance, or repair.

When the equipment is connected to the local AC power supply, internal terminals may be live and the opening of the covers or removal of parts (except those to which access can be gained by hand) is likely to expose live parts.

Safety

Capacitors inside the equipment may still be charged even if the equipment has been disconnected from all voltage sources.

Any adjustment, maintenance, or repair of the opened equipment under voltage must be carried out by a skilled person who is aware of the hazards involved.

Service personnel should be trained against unexpected hazards.

Ensure that only fuses with the required rated current and of the specified type are used for replacement. The use of makeshift fuses and short-circuiting of fuse holders is prohibited.

1.4 Static Electricity

The unit supplied uses static-sensitive devices. Service personnel should be alerted to components which require handling precautions to avoid damage by static electrical discharge.

Before handling circuit board assemblies containing these components, personnel should observe the following precautions:

1) The work surface should be a conductive grounded mat.

2) Soldering irons must be grounded and tools must be in contact with a conductive surface to

ground when not in use.

3) Any person handling static-sensitive parts must wear a wrist strap which provides a leaky

path to ground, impedance not greater th an 1MΩ.

4) Components or circuit board assemblies must be stored in or on conductive foam or mat

while work is in progress.

5) New components should be kept in the suppliers packaging until required for use.

1–3

2. INTRODUCTION

Introduction 2–1

Figure 2-1 6370 LCR Meter

The 6372 LCR Meter is suitable for the manufacturing environment and provides accurate fourterminal measurements of passive component primary and secondary parameters. Components may be measured over the frequency range 100Hz to 200kHz at a drive level of 50mV to 1V. A switch able 2V DC bias is also available. DC Resistance measurements are performed at a level of 500mV.

Component measurements include: Inductance (L), Capacitance (C), AC Resistance (R), DC

Resistance (DCR), Impedance (Z), Admittance (Y), Conductance (G), Quality Factor (Q).

The meter’s measurement, display and control facilities include:

φMemory for 127 set-up conditions

φDisplay of actual measurement values

φDisplay of the deviation from a user-set nominal value

φDisplay of measurement results in absolute terms or as the percentage difference from a

specified nominal value

φPass or Fail indication on both primary and secondary component parameters

Installation

3. INSTALLATION

3.1 AC Line Connections

The unit is provided with a power cable capable of carrying the input current for both 115V and

230V operation. This cable should be connected via a suitable connector to the local AC mains power supply. The colour code employed is as follows:

3–1

WIRE

LIVE

NEUTRAL

GROUND

EUROPEAN

BROWN

BLUE

GREEN/YELLOW

N. AMERICAN

BLACK

WHITE

GREEN

The supply voltage setting can be checked by looking on the rear panel above the power inlet connector. The supply voltage setting can be changed by first disconnecting the unit from the power supply and adjusting the switch to read the required voltage. Ensure that the fuse rating is correct:

3A–T for both 230V and 115V operation.

No adjustment is required for variation of supply frequency on installation, but for accurate measurements the line frequency must be selected in the system configuration, see section 4.8.1

System Configuration and 4.8.1.1 Line Frequency.

Before connecting the AC power, read the precautions listed under section 1.2 AC Power

Supply.

The instrument is not suitable for battery operation.

The power switch is located on the left of the front panel.

3.2 Location

The 6372 is intended for use on the bench. The power modules are convection cooled and care must be taken not to restrict any of the air paths.

Operation

4. OPERATION

WARNING!

This equipment is intended for use by suitably trained and competent persons.

This product is capable of having hazardous voltages (greater than 60V) on its terminals in normal use. Appropriate precautions should be taken for safety.

This product can cause hazards if it is not used in accordance with these instructions.

Read them carefully and follow them in all respects. Double check connections to the unit before use.

DO NOT USE THIS EQUIPMENT IF IT IS DAMAGED.

4–1

4.1 The Rear Panel

1) RS-232 Port

2) Handler Interface

3) GPIB Interface

4) Fuse (250V/3A)

5) Voltage Selector (115V/230V)

6) AC Mains Power Input (115V/230V)

Figure 4-1 Rear Panel

4–2

4.2 The Front Panel

Operation

1) Display

2) PASS, FAIL and BIAS indicators

3) Numeric Keypad

4) BNC Fixture/Test Lead Connectors

5) Soft Keys

6) Power Switch

Figure 4-2 Front Panel

4.3 Switching the unit on

With the instrument connected to the correct AC mains power supply, press the front panel

POWER switch. The unit will default to the last measurement type selected before the power was switched off. Bias is always off when the unit is powered up.

4.4 Switching the unit off

The power can be switched off at any time without damage to the instrument; however to avoid loss of data the unit should not be switched off while performing a test, or loading/saving a file.

4.5 Indicators

The PASS and FAIL indicators show the result of the last test.

The BIAS indicator lights when the 2V DC Bias is on.

Operation

4.6 Measurement Connections

Four BNC connectors are provided on the front panel for connection to the component to be tested. The following Kelvin clip leads and fixtures are available for use with the 6372.

Four-Terminal BNC Kelvin Clips (standard accessory—Part No. F423501)

General purpose four-terminal measuring leads for conventional components giving good accuracy except for measurement of very small capacitances or very small inductances where the use of a four-terminal component fixture will give more accurate results.

Four-Terminal Component Fixture (optional accessory—

Part No. F423503)

Four-terminal fixture with spring-loaded jaws to accommodate conventional leaded components. This fixture fits directly onto the front panel BNC connectors, removing inaccuracies associated with the movement of test leads. This is especially important when measuring low value inductors. This fixture will give the greatest accuracy for 4-terminal measurements of conventional components.

SMD Tweezers,

(optional accessory—

Part No. F423903)

Tweezers for use with surface-mount or leadless components. A cam is incorporated to set the jaw spacing to the width of the component to be tested so that open-circuit trim will trim out the residual capacitance of the tweezers.

4–3

4.7 Keys

4.7.1 Para

Use to set the primary and secondary measurement parameters to display.

4.7.2 Cal

Allows open- and short-circuit trimming to be carried out at the fixture or test lead jaws.

4.7.3 Comp

Use the Comp key to set upper and lower test measurement limits, on one or both parameters, to enable the instrument to indicate Pass or Fail when a component is measured.

4.7.4 Mode

Selects deviation display mode. In this mode the instrument displays the measurement with respect to the deviation reference setting.

4.7.5 Save/Rcl

Use the Save/Rcl key to save component set-up data to memory, and to recall it from memory.

4–4

4.7.6 Conf

Operation

Enters the system configuration menu to set up the line frequency, audible warning mode and

GPIB address.

4.7.7 Local

Switches between remote (GPIB) and local measurement modes.

4.7.8 Bias

Applies a 2V DC bias voltage to the measurement terminals.

4.7.9 Numeric Keypad

Use for entering characters: 0 – 9, decimal point, minus sign and backspace.

4.7.10 Navigation Keys

The and navigation keys are used to move the cursor between fields when using set up keys such as Para and Comp.

4.7.11 Enter

Press to confirm a menu selection.

4.7.12 Trig

Use to trigger a measurement when operating in manual measurement mode.

4.7.13 Soft keys

The soft keys are used to select the corresponding function on the display. The function of the soft keys change according to the mode selected.

4.7.14 Reset

Under normal operation this key should not need to be used. Pressing this key will reset the unit to the default state. Stored files are retained, but the current set-up will be lost.

4.8 Instrument Set-up

4.8.1 System Configuration

To select the System Configuration screen press the front panel Conf key to display the current configuration. Press the EXIT soft key to leave System Configuration.

Operation

Figure 4-3 System Configuration screen

The following parameters can be set:

Parameter

Line Frequency

Beep Function

GPIB Address

The frequency of the AC mains power supply

The ‘beep’ sound that is emitted when a test is passed or failed

Description

The address for GPIB operation.

Range

50Hz; 60Hz

OFF; PASS; FAIL

0 – 30

4.8.1.1 Line Frequency

1) Press the front panel Conf key.

2) Press the LINE soft key.

3) Select either 50Hz or 60Hz with the appropriate soft key: the instrument will set the

selected line frequency and will then start measuring the currently selected parameters

(see section 4.8.3 Parameters).

4.8.1.2 Beep Function


2) Press the BEEP soft key.

3) Select either OFF, PASS or FAIL with the appropriate soft key: the instrument will set

the selected beep function and will then start measuring the currently selected

parameters (see section 4.8.3 Parameters).

4.8.1.3 GPIB Address


2) Press the GPIB ADRS soft key.

3) Enter the required GPIB address from the keypad [Range: 0 – 30].

4) Press the front panel Enter key: the instrument will set the selected GPIB address and

will then start measuring the currently selected parameters (see section 4.8.3

Parameters).

4–5

4–6

4.8.2 Calibrate Mode

Operation

To select the Calibrate Mode screen press the front panel Cal key.

Figure 4-4 Calibrate Mode screen

This function ensures maximum measurement accuracy by setting the measurement reference point at the fixture or test lead jaws to 0mΩ (short circuit trim) and 0µF (open circuit trim).

For maximum measurement accuracy, the short- and open-circuit trims should be performed daily, whenever the measurement frequency is changed, and whenever the test leads or fixture are removed and refitted.

To leave the Calibrate Mode screen, press the EXIT soft key. The instrument will then start measuring the currently selected parameters (see section 4.8.3 Parameters).

4.8.2.1 Short Trim

1) Fit the test leads or fixture to be used.

2) Short the test leads or fixture contacts with a wire shorting link. For maximum

measurement accuracy the wire shorting link should be the same gauge and form as the

component to be tested.

3) Press the SHOR TRIM soft key from the Calibrate Mode menu: the following screen

will be displayed while the instrument measures the short circuit at the test frequency.

Figure 4-5 Please Wait screen

Note

If the shorting link is not fitted, or if either the shorting link or fixture contacts are dirty, the instrument will not be able to measure the short circuit and the following error will be reported.

Figure 4-6 Out of Limit error

Operation

4.8.2.2 Open Trim

1) Fit the test leads or fixture to be used.

2) Open-circuit the test leads or fixture contacts, that is, remove any component which may

be connected.

3) Press the OPEN TRIM soft key: the Please Wait screen shown in Figure 4-5 will be

displayed while the instrument measures the open circuit at the test frequency.

Note

If the test fixture contacts are shorted or have a component connected across them, the instrument will not be able to measure the open circuit and the Out of Limit error shown in

Figure 4-6 will be reported.

4–7

4.8.3 Parameters

Press the front panel Para key to select the primary and secondary measurement parameters. A

or symbol at the edge of the screen indicates that further parameters are available. Use the

or navigation key, as appropriate, to show the other parameters.

Figure 4-7 Primary and Secondary Parameters

Selection of the primary parameter will limit the available secondary parameter options: see table below.

Cp

R

Y

G

DCR

Primary Parameter

Z

Ls

Lp

Cs

Secondary Parameters available

OFF

Q; D; Rs; OFF

Q; D; Rp; G; OFF

D; Q; Rs; OFF

D; Q; Rp; G; OFF

X; OFF

OFF

B; OFF

—

4–8 Operation

1) Press the front panel Para key. The Primary Parameter menu will be displayed. To see

more parameters, press the navigation key.

2) Select the required primary parameter with the appropriate soft key. The Secondary

Parameter menu will be displayed.

3) Select the required secondary parameter with the appropriate soft key: the instrument

will then start measuring the parameters selected.

4.8.4 Comparator

The comparator screen is used to set measurement limits against which the device under test

(DUT) is compared. If the DUT measurement is within the comparator limits set, a Pass result will be indicated by the instrument; if the DUT measurement is outside of the comparator limits, a Fail result will be indicated.

Press the front panel Comp key to enter the comparator screen. The soft key values will reflect the parameter and deviation mode settings and may be shown as either absolute units or percentage limits.

Figure 4-8 Comparison with absolute resistance limits and reactance turned off

To leave the current setting unchanged, use the Enter key or the to move to the next deviation mode setting.

Either limit may be turned off with the soft key marked ‘OFF’.

1) Press the front panel Comp key: the comparator screen will be shown.

navigation keys

2) Use the keypad to type the numeric value of the primary parameter Hi limit, which may

be expressed in absolute or percentage limits, depending on the setting.

3) Use the appropriate soft key to select the primary parameter Hi limit unit. If the primary

parameter is set to show percentage deviation, then only the percentage (%) soft key will

be available. When the required soft key is selected the cursor will move to the primary

parameter Lo limit.

4) Type the numeric value of the primary parameter Lo limit.

5) Select the primary parameter Lo limit unit: the cursor will move to the secondary

parameter Hi limit.

6) Type the numeric value of the secondary parameter Hi limit.

7) Select the secondary parameter Hi limit unit: the cursor will move to the secondary

parameter Lo limit.

8) Type the numeric value of the secondary parameter Lo limit.

9) Select the secondary parameter Lo limit unit: the instrument will then start measuring

the currently selected parameters.

Operation

4.8.5 Deviation Mode

This function is used to set either absolute measurement units or percentage limits and can be used to set a reference level. For example if the reference level is set to 0, then the instrument will display the measurement value; if the reference level is set to the nominal value of the

DUT, then the instrument will display the deviation from the nominal value.

Hence:

Displayed value = Measured value – Deviation Mode reference level

Therefore:

If the Deviation Mode reference level is set at 10Ω and the instrument measures the DUT at

9.9

47Ω, then the displayed value will be:

9.947 – 10 = –

0.053Ω (–53mΩ)

4–9

Figure 4-9 Deviation Mode with absolute units for R, a 10

&

reference and X turned off

To leave the current setting unchanged, use the Enter key or the to move to the next deviation mode setting. navigation keys

If a deviation mode setting is set to OFF, the reference level setting is not applicable and will be omitted.

1) Press the front panel Mode key: the deviation mode screen will be shown with the

cursor at the primary parameter setting

2) Use the appropriate soft key to set the primary parameter to absolute units (ABS),

percentage limits (%) or OFF: the cursor will move to the primary parameter reference

level setting.

3) Use the keypad to type the numeric value of the reference level, and then press a soft

key to set the unit required: the cursor will move to the secondary parameter 

setting.

4) Use the appropriate soft key to set the secondary parameter to ABS, % or OFF: the

cursor will move to the secondary parameter reference level setting.

5) Use the keypad to type the numeric value of the reference level, and then press a soft

key to set the unit required: the instrument will then start measuring the currently

selected parameters.

4–10

4.8.6 Trigger

Operation

The front panel Trig key is used to manually initiate a measurement when the instrument is set to manual trigger mode. Figure 4-10, below, shows the trigger mode setting and trigger mode soft key; the table below outlines the trigger requirements of each trigger mode setting.

Figure 4-10 The Trigger Mode soft key

Trigger Mode

INT. (internal)

MAN. (manual)

EXT. (external)

BUS (GPIB bus)

Description

Measurements are automatically triggered.

A measurement is made each time the front panel Trig key is pressed.

Measurements are triggered by an external signal, for example from the

RS-232 port or Handler Interface.

Measurements are triggered via the GPIB bus.

4.8.7 Save/Rcl

Up to 127 different instrument set-up conditions can be saved in the instrument’s memory to enable fast recall of the test conditions required for a particular component type.

4.8.7.1 Save

To save an instrument set-up condition to memory:

1) Ensure that the instrument is set-up as required.

2) Press the front panel Save/Rcl key: the following screen will be displayed.

3) Press the SAVE soft key.

Figure 4-11 Save/Recall

Operation

4) Enter a number to save the set-up condition [range: 1 – 127], followed by the front panel

Enter key.

4–11

Figure 4-12 Save set-up

NOTE

Any previously saved set-up will be overwritten; therefore you are advised to keep a record of all the saved set-up conditions.

4.8.7.2 Recall

To recall an existing instrument set-up condition from memory:

1) Press the front panel Save/Rcl key: the screen shown in Figure 4-11, above, will be

displayed.

2) Press the RECALL soft key.

3) Enter the number of the previously saved set-up condition [range: 1 – 127], followed by

the front panel Enter key: the settings will be applied and the instrument will start

measuring using the recalled parameters.

Figure 4-13 Recall set-up

NOTE

If a number is entered for which no saved set-up exists, the following error will be reported.

Figure 4-14 Recall error

4–12

4.9 Measuring a Component

Operation

4.9.1 General

The general procedure for component measurement is shown below. For specific measurement examples see section 4.9.2 Examples.

1) Connect the test leads or fixture to the front panel BNC connectors.

2) Set the required calibration frequency.

3) Press the front panel Cal key to enter Calibrate Mode and perform short- and open-

circuit trims.

4) Press the EXIT soft key to exit Calibrate Mode: the measurement screen will be

displayed.

5) Set up the instrument as required (see section 4.8 Instrument Set-up). If a set-up

condition has been saved for the DUT, recall it from memory (see section 4.8.7

Save/Rcl).

6) If necessary, use the measurement screen soft keys to change the measurement

parameters, e.g. test frequency, voltage, speed, trigger mode, range.

7) Insert the DUT into the test lead or fixture jaws: if the instrument is set to internal

trigger, measurements of the DUT will now be made and displayed on the screen; if the

comparator has been set-up (see section 4.8.4 Comparator) the PASS or FAIL indicator

will light as appropriate.

4.9.2 Examples

4.9.2.1 Inductance Measurement



3) Press the front panel Cal key to enter Calibrate Mode.

4) Short the test leads or fixture contacts with a wire shorting link, preferably of the same

gauge and form as the DUT.

5) Press the SHOR TRIM soft key and wait while the instrument measures the short circuit

at the test frequency.

6) Remove the wire shorting link, and with the test leads or fixture contacts open circuit,

press the OPEN TRIM soft key and wait while the instrument measures the open circuit



displayed.

NOTE

The short- and open-circuit trims do not need to be done every time a component is measured. For maximum measurement accuracy, they should be performed daily,

Operation

whenever the measurement frequency is changed, or whenever the test leads or fixture are removed and refitted.



Save/Rcl). For this example, the following settings will be used to measure a 470µH

inductor.

Parameter

Primary

Secondary

Primary Hi limit

Primary Lo limit

Secondary Hi and Lo limits

Primary units

Primary deviation

Secondary units

Secondary deviation

Test Frequency

Test Voltage

Test Speed

Trigger Mode

Range

Setting

Ls

Q

495µH

445µH

Off

ABS

0µH

Off

1 n/a

10kHz

0.1V

SLOW

INT.

AUTO

Mode).

soft keys.

Information

Set with the front panel Para key

(see section 4.8.3 Parameters)

Set with the front panel Comp key

(see section 4.8.4 Comparator)

Set with the front panel Mode key (see section 4.8.5 Deviation

Set with the measurement screen

9) Connect the DUT to the test leads or fixture contacts: the measurement result will be

displayed and the PASS or FAIL indicator will light, as appropriate.

4–13

Figure 4-15 Inductance Measurement

4.9.2.2 Resistance Measurement




1

The instrument defaults to absolute units.

4–14 Operation









displayed.

NOTE

The short- and open-circuit trims do not need to be done every time a component is measured. For maximum measurement accuracy, they should be performed daily, whenever the measurement frequency is changed, or whenever the test leads or fixture are removed and refitted.



Save/Rcl). For this example, the following settings will be used to measure a 10Ω

resistor.

Parameter

Primary

Secondary

Primary Hi limit

Primary Lo limit


Primary units

Primary deviation

Secondary units

Secondary deviation

Test Frequency

Test Voltage

Test Speed

Trigger Mode

Range n/a

1kHz

1V

SLOW

INT.

AUTO

Setting

R

X

11Ω

9Ω

Off

ABS

0mΩ

Off

2

Information






Mode).

Set with the measurement screen soft keys.

2


Operation



4–15

Figure 4-16 Resistance Measurement

4.9.2.3 Impedance Measurement












displayed.

NOTE

The short- and open-circuit trims do not need to be done every time a component is measured. For maximum measurement accuracy, they should be performed daily, whenever the measurement frequency is changed, and whenever the test leads or fixture are removed and refitted.



Save/Rcl). For this example, the following settings will be used to measure a complex

impedance.

4–16

Parameter

Primary

Secondary

Primary Hi and Lo limits


Primary units

Primary deviation

Secondary units

Secondary deviation

Test Frequency

Test Voltage

Test Speed

Trigger Mode

Range

Operation n/a

Off n/a

100kHz

0.25V

FAST

INT.

AUTO

Z

Setting



Off

Off

Off

3

Information






Mode).



displayed, but because there are no comparator test limits set, there will be no PASS or

FAIL indication.

Figure 4-17 Impedance Measurement

4.9.2.4 Capacitance Measurement











3


Operation


displayed.

NOTE

The short- and open-circuit trims do not need to be done every time a component is measured. For maximum measurement accuracy, they should be performed daily, whenever the measurement frequency is changed, and whenever the test leads or fixture are removed and refitted.

4–17



Save/Rcl). For this example, the following settings will be used to measure a 680nF

capacitor.

Primary

Parameter

Secondary

Primary Hi limit

Primary Lo limit

Secondary Hi limit

Secondary Lo limit

Primary units

Primary deviation

Secondary units

Secondary deviation

Test Frequency

Test Voltage

Test Speed

Trigger Mode

Range

BIAS

Setting

Cp

D

+20%

–20%

0.1

Off

%

0nF

ABS

0

1kHz

1V

SLOW

INT.

AUTO

Off

Information






Mode).


A 2V DC bias can be switched on and off with the front panel BIAS key.



Figure 4-18 Capacitance Measurement

General Purpose Interface Bus (GPIB)

5. GENERAL PURPOSE INTERFACE BUS (GPIB)

5.1 Introduction

The GPIB is a parallel port designed to be used for communication between instruments and control device such as PCs fitted with a suitable interface card. The interface protocol is defined by the IEEE 488.1 standard. Some additional generic capabilities of the listeners and talks are defined by IEEE 488.2. The SCPI standard defines the highest level of command structure including a number of standard commands for all instruments.

5–1

5.1.1 Interface Specification

The IEEE 488.1 bus standard and the IEEE 488.2 code standard are fully supported. The command set has also been designed to the SCPI standard.

The IEEE 488.1 functions supported

LE0

SR1

DC1

RL1

PP0

DT1

C0

SH1

AH1

T6

TE0

L4

Full source handshake

Full acceptor handshake

Basic talker, serial poll, no talk only, untalk if MLA

No talker with secondary addressing

Basic listener, no listen only, unlisten if MTA

No listener with secondary addressing

Full service request

Full device clear

Full remote/local compatibility

No parallel poll

Full device trigger compatibility

No controller

5.1.2 Changing the GPIB Address

Each instrument on the GPIB requires a unique address and this can be set to any address in the range 0 to 30.

The default address for the 6372 is 6 and this may be changed from System Configuration menu as follows:-.

1) Press the Conf front panel key.

2) Select GPIB ADRS using the soft key.

3) Enter the new GPIB address using the numeric keypad,

4) Press the Enter key to confirm the change.

5–2 General Purpose Interface Bus (GPIB)

The GPIB address is stored in non-volatile memory.

5.2 Returning to Local Mode

Any GPIB command sent to the 6372 will put the instrument into remote mode. Once in remote mode none of the front panel keys will function with the exception of the LOCAL key.

To restore control of the instrument to the front panel keyboard press the LOCAL key.

5.3 Getting Data from the 6372

There are several GPIB commands that end with a question mark. These commands are called query commands and return data from the 6372.

5.4 Numeric data NR1, NR2, NR3

These three numeric data types are defined in IEEE 488.2

NR1: Integer e.g.

10

+10

-10

NR2: Fixed point e.g.

10.1

+10.1

-10.1

NR3: Floating point e.g.

1.23E+3

12.3E-6

5.5 Control sequence

A Typical control sequence example for 6372 is

1. Set up the 6372.

2. Trigger the measurement.

3. Retrieve the data.

Programming example in the C language: int ud; char bfr[32];

General Purpose Interface Bus (GPIB) ud = ibfind("DEV6"); ibwrt(ud, "*RST"); ibwrt(ud, ":TRIG:SOUR INT"); ibwrt(ud, ":CALC1:FORM LP");

// 6372's address is 6

// Resets the 6372

// Trigger source is internal trigger

// Primary parameter is LP ibwrt(ud, ":CALC2:FORM Q"); ibwrt(ud, ":SOUR:VOLT 1V"); delay(500); ibwrt(ud, ":FETCH?"); ibrd(ud, bfr); ibwrt(ud, ":SOUR:FREQ 10kHZ");

// Secondary parameter is Q

// Test signal frequency is 10kHz

// Test signal level is 1 volt

// Wait until the internal trigger is complete

// Retrieve reading from output buffer

5.6 Status Reporting

5.6.1 Status Byte Register (SBR)

The status byte is used to summarize information from the other status groups. The SBR can be read by the query command *STB? or by performing a serial poll on the instrument.

5–3

Bit Description

1

0

3

2

7

6

Operation Status Event Register summary bit.

This bit serves two functions, Request Service (RQS) and Master Summary (MSS).

RQS

If this bit is read in serial polling process, it is treated as the RQS bit and is reset during the serial polling process.

MSS

If this bit is read by using the *STB? query, it is treated as the MSS bit and its value is not changed after read.

5 Event Summary Bit (ESB). When unmasked by ESE register, this bit will be set whenever the corresponding bit or bits are set in the Event Status Register.

4 Message Available bit (MAV). The output queue has data available to read. This bit is cleared when the data is read.

Questionable Status Register Summary bit. This bit is not used and is always 0.

Always 0

Always 0

Always 0

Figure 5-1 Status Byte Register


Figure 5-2 Status Byte Register

5.6.2 Service Request Enable Register (SRE)

The SRE register is a mask determining the conditions in which the SBR will generate a service request. It is bit-wise ANDed with the SBR and if the result is not zero then bit 6 of SBR is set.

The SRE register is set by the *SRE command and read by the *SRE? command.

5.6.3 Standard Event Status Register (ESR)

The standard ESR contains the 8 bits of the operation status report which is defined in IEEE

488.2, If one or more event status bit is set to "1" and their enable bits are also "1", bit 5 (ESB) of the SBR is set to "1".

Bit Description

7 Power ON bit (PON). This bit is set when the instrument power has been turned OFF and then ON since the last time this register was read.

User Request (URQ). Not used, always 0.

6

5 Command Error (CME). Error Nos. -100 to -178. This bit is set if the following command errors occur:

1. An IEEE 488.2 syntax error occurred.

2. The device received a Group Execute Trigger (GET) inside a program message.

4 Execution Error (EXE). Error Nos. -211 to -230. This bit is set when a parameter following a header of a GPIB command was evaluated by the instrument as being outside of its legal input range or is otherwise inconsistent with the instrument's capabilities.


3 Device Dependent Error (DDE). Error Nos. -310 to -311. This bit is set when any bit is set in the Encoded Message Register.

2 Query Error (QYE). Error Nos. -400 to -440. This bit is set when attempting to read data from the output buffer in which no data was present, or when the data was lost.

1 Request Control (RQC). Not used, always 0.

0 Operation Complete (OPC). This bit is set when the instrument has completed all selected pending operations before sending the *OPC command.

Figure 5-3 Standard Event Status Register

5–5

Figure 5-4 Event Status Byte Register

5.6.4 Standard Event Status Enable Register (ESE)

The standard ESE register is a mask determining the conditions in which the standard ESR will set bit 5 of the SBR. It is bit-wise ANDed with the standard ESR and if the result is not zero the

ESB (bit 5) of SBR is set. Thus any event affecting the ESR can be made to generate a service request in conjunction with the ESE and SRE. The standard ESE is set by the *ESE command and read by the *ESE? command.


5.6.5 Standard Operation Status Register

The 6372 provides two standard operation status groups. Each group includes a condition register, event register and enable register which can be accessed through the STATus subsystem.

5.6.6 Operation Status Register

The standard operation status group provides information about the state of the measurement system in the instrument.

Figure 5-5 Standard Operation Status Group

Bit

15-5

4

3-1

0

Description

Always 0.

This bit is set when the measurement is in progress.

Always 0

This bit is set when the open trim or the short trim is in progress.

Figure 5-6 Operation Status Condition Register

Bit

15-5

4

3-1

0

Description

Always 0

This bit is set when a measurement has been completed.

Always 0

This bit is set when the open trim or the short trim has been completed.

Figure 5-7 Operation Status Event Register


Note: Once the event register's bits are set to 1, the bits are kept at 1 before the data has been read.

5.6.7 Questionable Status Register

The 6372 has no operation to report the event to the questionable status register group, so they are always 0. This register is available to keep consistency with other SCPI compatible instrumentation.

5.7 Command Summary

5.7.1 Common Commands

5–7

*CLS

Command

Clear Status

Name

*ESE <numeric val> Event Status Enable

Description

Clears the Status Byte Register and the Standard Event

Status Enable Register.

Sets the Event Status Enable Register to the value of the data following the command.

*ESE?

*ESR?

*IDN?

*LRN?

*OPT ?

Event Status Enable Query

Event Status Register Query

Identification Query

Status

Option Identification Query

Returns the current contents of the Standard Event Status

Enable Register as an integer in the range 0 to 255.

Returns the current contents of the Standard Event Status

Register as an integer in the range 0 to 255.

Returns the data identifying the instrument. (e.g. the data output will be: ‘MICROTEST,6372,0,1.0’ where the first field is the manufacturer, then the model number, then a zero followed by the software revision number: here represented as Issue 1.0).

Returns 6372 state

Returns the hardware options installed in the instrument. 0 = no options installed, 1=GPIB interface.

*OPC

*OPC?

Operation Complete Command Sets the 0 (OPC) bit of the Standard Event Status Register when all pending operations are complete.

Operation Complete Query Always returns 1 as instrument commands are always processed sequentially.

*RCL <numeric val> Recall

*RST

*SAV <numeric val> Save

Reset

Loads the instrument settings stored in the specified memory locations. 128 memory locations (1-128) are available.

Resets the instrument to a default setting. This command is equivalent to a power-up reset. This command has same effect as :SYSTem:PRESet.

Saves the instrument settings in the specified memory number. 128 memory locations (1-128) are available.


*SRE?

*STB?

*TRG

*TST

*WAI

Command Name

*SRE <numeric val> Service Request Enable

Description

Sets the Service Request Enable Register to the value following the command. The register is set except that bit 6 is ignored.

Service Request Enable Query Returns the current contents of the Service Request Enable

Register as an integer in the range 0 to 63 and 128 to 255.

Status Byte Query Returns the current contents of the Status Byte with the

Master Summary bits as an integer in the range 0 to 255. Bit 6 represents Master Summary Status rather than Request

Service.

Trigger Triggers a measurement when the Trigger source is set to

BUS, but does not return the results to the controller. This is the same as a GET (Group Execute Trigger) command.

Sending the *TRG command when the current trigger mode is not set to the BUS mode will generate an error.

Self test.

Wait-to-continue

Executes an internal self-test function. Always returns 1.

Makes the 6372 wait until all previously sent commands are executed completely.

5.7.2 Operation Status Commands

Refer to section 5.6 for an explanation of the following commands.

Command

:STATus:OPERation:CONDition?

Name

Status Operation Condition

Register query.

:STATus:OPERation:EVENt?

:STATus:OPERation:ENABle?

:STATus:OPERation:ENABle <numeric val>

:STATus:QUEStionable:CONDition?

Status Operation Event register query

Register

Status Operation Enable

Status Operation Enable

Register query

Status Questionable

Condition Register query

Description

Returns the content of the condition register of the operation status register group. Reading the register does not clear it.

Returns the contents of the event register of the operation status register group.

Sets the enable register of the operation status register group.

Returns the current contents of the enable register of the operation status register group.

Always returns 0


Command

:STATus:QUEStionable:ENABle <numeric_value> Status Questionable Enable

Register

Name

:STATus:QUEStionable:ENABle?

:STATus:QUEStionable:EVENt?

Status Questionable Enable

Register query

Status Questionable Event

Register query

5–9

Description

Sets the enable register of the questionable status register group.

Returns the enable register of the questionable status register group.

Always returns 0.

5.7.3 Device-Specific Commands

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.

5.7.3.1 Command Summary

Command

:ABORt

:CALCulate1:FORMat

:CALCulate1:FORMat?

:CALCulate2:FORMat

:CALCulate2:FORMat?

:CALCulate1:LIMit:UPPer

:CALCulate1:LIMit:UPPer?

:CALCulate1:LIMit:LOWer

:CALCulate1:LIMit:LOWer?

:CALCulate1:LIMit:UPPer:STATe

:CALCulate1:LIMit:UPPer:STATe?

:CALCulate1:LIMit:LOWer:STATe

:CALCulate1:LIMit:LOWer:STATe?

:CALCulate1:LIMit:FAIL?

:CALCulate2:LIMit:UPPer

:CALCulate2:LIMit:UPPer?

:CALCulate2:LIMit:LOWer

Summary

Stop all pending GPIB commands.

Sets the primary measurement parameter.

Queries the primary measurement parameter

Sets the secondary measurement parameter.

Queries the secondary measurement parameter.

Sets the primary parameter upper limit value.

Queries the primary parameter upper limit value.

Sets the primary parameter lower limit value.

Queries the primary parameter lower limit value.

Enables/disables the primary parameter upper limit.

Queries if the primary parameter upper limit is enabled.

Enables/disables the primary parameter lower limit.

Queries if the primary parameter lower limit is enabled.

Returns the comparison result for the primary parameter.

Sets the secondary parameter upper limit value.

Queries the secondary parameter upper limit value.

Sets the secondary parameter lower limit value.

Page

5–12

5–12

5–16

5–16

5–16

5–16

5–17

5–17

5–17

5–13

5–14

5–15

5–15

5–15

5–17

5–18

5–18

5–10

Command

:CALCulate2:LIMit:LOWer?

:CALCulate2:LIMit:UPPer:STATe

:CALCulate2:LIMit:UPPer:STATe?

:CALCulate2:LIMit:LOWer:STATe

:CALCulate2:LIMit:LOWer:STATe?

:CALCulate2:LIMit:FAIL?

:CALCulate1:MATH:EXPRession:MODE

:CALCulate1:MATH:EXPRession:MODE?

:CALCulate2:MATH:EXPRession:MODE

:CALCulate2:MATH:EXPRession:MODE?

:FETCh?

:SENSe:CORRection OPEN

:SENSe:CORRection SHORt

:SENSe:CORRection:OPEN:DATA?

:SENSe:CORRection:SHORt:DATA?

:SENSe:CORRrction:STATe

:SENSe:CORRrction:STATe?

:SENSe:APERture

:SENSe:APERture?

:SENSe:RANG:HOLD

:SENSe:RANG:HOLD?


:CALCulate1:MATH:EXPRession:REFerence

:CALCulate1:MATH:EXPRession:REFerence?

:CALCulate2:MATH:EXPRession:REFerence

:CALCulate2:MATH:EXPRession:REFerence?

Summary

Queries the secondary parameter lower limit value.

Enables/disables the secondary parameter upper limit.

Queries if the secondary parameter upper limit is enabled.

Enables/disables the secondary parameter lower limit.

Queries if the secondary parameter lower limit is enabled.

Returns the secondary parameter comparison result.

Sets the expression used for the primary parameter deviation measurement

Queries the expression used for the primary parameter deviation measurement.

Sets the expression used for the secondary parameter deviation measurement.

Queries the expression used for the secondary parameter deviation measurement.

Sets the reference value for the primary parameter deviation measurement.

Queries the reference value for the primary parameter deviation measurement.

Sets the reference value for the secondary parameter deviation measurement.

Queries the reference value for the secondary parameter deviation measurement.

Returns the measurement data form the output buffer.

Performs an OPEN circuit correction.

Performs a SHORT circuit correction.

Returns the OPEN correction data

Returns the SHORT correction data

Enables the measurement error correction function.

Queries if measurement error correction is enabled.

Sets the measurement speed.

Queries the measurement speed.

Sets the range hold function.

Queries whether the range hold function is enabled or disabled.

5–21

5–21

5–21

5–22

5–23

5–23

5–23

5–24

5–24

5–22

5–22

5–22

5–22

5–23

5–24

Page

5–18

5–18

5–19

5–19

5–19

5–19

5–20

5–20

5–20

5–21

Command

:SOURce:FREQuency

:SOURce:FREQuency?

:SOURce:VOLTage

:SOURce:VOLTage?

:SOURce:VOLTage:BIAS:STATe

:SOURce:VOLTage:BIAS:STATe?

:SYSTem:ERRor?

:SYSTem:KLOCk

:SYSTem:KLOCk

:SYSTem:LFRequency

:SYSTem:LFRequency?

:SYSTem:PRESet

:SYSTem:VERSion

:SYSTem:BEEPer

:SYSTem:BEEPer?

:TRIGger

:TRIGger:SOURce

:TRIGger:SOURce?


Summary

Sets the test signal frequency.

Queries the test signal frequency.

Sets the test signal voltage level.

Queries the test signal voltage level.

Enables the DC bias voltage.

Queries whether the internal DC bias voltage is enabled.

Queries the GPIB error message in the error queue.

Locks or unlocks the front panel keys.

Queries if the front panel keys are locked.

Sets the power line frequency compensation.

Queries the power line frequency compensation.

Reset the 6372 to the default state.

Returns the software version.

Sets the audible warning mode.

Queries the audible warning mode.

Execute a measurement

Sets the trigger mode.

Queries the trigger mode.

5–11

5–28

5–28

5–29

5–29

5–29

5–30

5–30

5–30

5–27

5–27

Page

5–25

5–25

5–25

5–26

5–26

5–26

5–28

5–28


5.7.3.2 Measurement Commands

MEASUREMENT COMMANDS

:ABORt

The ABORt command resets the trigger system immediately, ignoring all pending GPIB commands.

Parameters:

None.

Response:

None.

:CALCulate1:FORMat {Z|LS|LP|CS|CP|R|Y|G}

Sets the primary measurement parameter. Once the primary measurement parameter has been set, then the system will use the default parameter for the secondary measurement parameter.

Parameters:

Selecting the primary measurement parameter:

:CALCulate1:FORMat Z Impedance

:CALCulate1:FORMat LS Inductance (Series)

:CALCulate1:FORMat LP Inductance (Parallel)

:CALCulate1:FORMat CS Capacitance (Series)

:CALCulate1:FORMat CP Capacitance (Parallel)

:CALCulate1:FORMat R Resistance

:CALCulate1:FORMat Y

:CALCulate1:FORMat G

Admittance

Conductance.

Response:

None.



:CALCulate1:FORMat?

Queries the primary measurement parameter.

Parameters:

None

Response:

Returns the primary measurement type.

Z Impedance

LS Inductance (Series)

LP Inductance (Parallel)

CS Capacitance (Series)

CP Capacitance (Parallel)

R Resistance

Y

G

Admittance

Conductance

5–13



:CALCulate2:FORMat {PHAS|Q|D|RS|RP|G|X|B|OFF}

Sets the secondary measurement parameter.

Parameters:

Selecting the secondary measurement parameter:

:CALCulate2:FORMat PHAS Phase

:CALCulate1:FORMat Q Quality factor

:CALCulate1:FORMat D

:CALCulate1:FORMat RS

Dissipation factor

Resistance (Series)

:CALCulate1:FORMat RP

:CALCulate1:FORMat G

:CALCulate1:FORMat X

:CALCulate1:FORMat B

Resistance (Parallel)

Conductance

Reactance

Susceptance

:CALCulate1:FORMat Off No Secondary parameter

The following primary and secondary parameter combinations may be set.

Primary

Z

LS

LP

CS

CP

R

Y

G

Secondary

PHAS, OFF

Q, D, RS, OFF

Q, D, RP, G, OFF

D, Q, RS, OFF

D, Q, RP, G, OFF

X, OFF

PHAS, OFF

B, OFF

Response:

None.



:CALCulate2:FORMat?

Queries the secondary measurement parameter.

Parameters:

None

Response:

Returns the secondary measurement parameter.

Θ

Phase

Q Quality factor

D

RS

RP

Dissipation factor

Resistance (Series)

Resistance (Parallel)

G

X

B

Off

Conductance

Reactance

Susceptance

No Secondary parameter

:CALCulate1:LIMit:UPPer <numeric_val>

Sets the upper limit value of the primary parameter.

Parameters:

The primary parameter upper limit value.

Response:

None

:CALCulate1:LIMit:UPPer?

Queries the upper limit value of the primary parameter.

Parameters:

None

Response:

Upper limit value of the primary parameter in <NR3> format.

5–15



:CALCulate1:LIMit:LOWer <numeric_val>

Sets the lower limit value of the primary parameter.

Parameters:

The primary parameter lower limit value.

Response:

None

:CALCulate1:LIMit:LOWer?

Queries the lower limit value of the primary parameter.

Parameters:

None

Response:

Lower limit value of the primary parameter in <NR3> format.

:CALCulate1:LIMit:UPPer:STATe {OFF|ON}

Enables or disables the upper limit for the primary parameter.

Parameters:

:CALCulate1:LIMit:UPPer:STATe OFF

:CALCulate1:LIMit:UPPer:STATe ON

Response:

None

Upper limit disabled.

Upper limit enabled.

:CALCulate1:LIMit:UPPer:STATe?

Queries the status of the upper limit for the primary parameter

Parameters:

None

Response:

1 Enabled

0 Disabled



:CALCulate1:LIMit:LOWer:STATe {OFF|ON}

Enables or disables the lower limit for the primary parameter.

Parameters:

:CALCulate1:LIMit:LOWer:STATe OFF

:CALCulate1:LIMit:LOWer:STATe ON

Response:

None

Lower limit disabled.

Lower limit enabled.

:CALCulate1:LIMit:LOWer:STATe?

Queries the status of the lower limit for the primary parameter

Parameters:

None

Response:

1 Enabled

0 Disabled

:CALCulate1:LIMit:FAIL?

Returns the comparison result for the primary parameter.

Parameters:

None

Response:

1 FAIL

0 PASS

:CALCulate2:LIMit:UPPer <numeric_val>

Sets the upper limit value of the secondary parameter.

Parameters:

The secondary parameter upper limit value.

Response:

None

5–17



:CALCulate2:LIMit:UPPer?

Queries the upper limit value of the secondary parameter.

Parameters:

None

Response:

Upper limit value of the secondary parameter in <NR3> format.

:CALCulate2:LIMit:LOWer <numeric_val>

Sets the lower limit value of the secondary parameter.

Parameters:

The secondary parameter lower limit value.

Response:

None

:CALCulate2:LIMit:LOWer?

Queries the lower limit value of the secondary parameter.

Parameters:

None

Response:

Lower limit value of the secondary parameter in <NR3> format.

:CALCulate2:LIMit:UPPer:STATe {OFF|ON}

Enables or disables the upper limit for the secondary parameter.

Parameters:

:CALCulate2:LIMit:UPPer:STATe OFF

:CALCulate2:LIMit:UPPer:STATe ON

Response:

None

Upper limit disabled.

Upper limit enabled.



:CALCulate2:LIMit:UPPer:STATe?

Queries the status of the upper limit for the secondary parameter

Parameters:

None

Response:

1 Enabled

0 Disabled

:CALCulate2:LIMit:LOWer:STATe {OFF|ON}

Enables or disables the lower limit for the secondary parameter.

Parameters:

:CALCulate2:LIMit:LOWer:STATe OFF

:CALCulate2:LIMit:LOWer:STATe ON

Response:

None

Lower limit disabled.

Lower limit enabled.

:CALCulate2:LIMit:LOWer:STATe?

Queries the status of the lower limit for the secondary parameter

Parameters:

None

Response:

1 Enabled

0 Disabled

:CALCulate2:LIMit:FAIL?

Returns the comparison result for the secondary parameter.

Parameters:

None

Response:

1 Fail

0 Pass

5–19



:CALCulate1:MATH:EXPRession:MODE {OFF|ABS|PCNT}

Sets the primary measurement deviation parameter.

Parameters:

:CALCulate1:MATH:EXPRession:MODE OFF Disabled

:CALCulate1:MATH:EXPRession:MODE ABS Absolute deviation

:CALCulate1:MATH:EXPRession:MODE PCNT Percentage deviation

Response:

None

:CALCulate1:MATH:EXPRession:MODE?

Queries the deviation parameter type for the primary measurement.

Parameters:

None

Response:

OFF Disabled

ABS Absolute deviation

PCNT Percentage deviation

:CALCulate2:MATH:EXPRession:MODE {OFF|ABS|PCNT}

Sets the secondary measurement deviation parameter.

Parameters:

:CALCulate2:MATH:EXPRession:MODE OFF Disabled

:CALCulate2:MATH:EXPRession:MODE ABS Absolute deviation

:CALCulate2:MATH:EXPRession:MODE PCNT Percentage deviation

Response:

None



:CALCulate1:MATH:EXPRession:MODE?

Queries the deviation parameter type for the secondary measurement.

Parameters:

None

Response:

OFF Disabled

ABS Absolute deviation

PCNT Percentage deviation

:CALCulate1:MATH:EXPRession:REFerence <numeric_val>

Sets the deviation reference value for the primary measurement.

Parameters:

The reference value for the primary measurement.

Response:

None

:CALCulate1:MATH:EXPRession:REFerence?

Queries the deviation reference value for the primary measurement.

Parameters:

None

Response:

The reference value for the primary measurement in <NR3> format.

:CALCulate2:MATH:EXPRession:REFerence <numeric_val>

Sets the deviation reference value for the secondary measurement.

Parameters:

The reference value for the secondary measurement.

Response:

None

5–21



:CALCulate2:MATH:EXPRession:REFerence?

Queries the deviation reference value for the secondary measurement.

Parameters:

None

Response:

The reference value for the secondary measurement in <NR3> format.

:FETCh?

Retrieves the last measurement result from the 6372.

Parameters:

None

Response:

<data1>,<data2>

<data1> Measurement data of the primary parameter in <NR3> format.

<data2> Measurement data of the second parameter in <NR3> format.

:SENSe:CORRection {OPEN|SHORt}

Performs an open or short circuit trim.

Parameters:

:SENSe:CORRection OPEN

:SENSe:CORRection SHORt

Response:

None

:SENSe:CORRection:OPEN:DATA?

Returns the open circuit trim correction data.

Parameters:

None

Response:

Open circuit trim correction in <NR3> format.



:SENSe:CORRection:SHORt:DATA?

Returns the short circuit trim correction data.

Parameters:

None

Response:

Short circuit trim correction in <NR3> format.

:SENSe:CORRrction:STATe {OFF|ON}

Enables or disables the measurement error correction.

Parameters:

:SENSe:CORRrction:STATe OFF Trim values ignored.

:SENSe:CORRrction:STATe ON Measurements corrected using last trim values.

Response:

None

:SENSe:CORRrction:STATe?

Returns the status of the measurement correction facility.

Parameters:

None

Response:

1 Enabled

0 Disabled

:SENSe:APERture {SLOW|MEDium|FAST}

Sets the measurement speed.

Parameters:

:SENSe:APERture SLOW Slowest measurements speed selected.

:SENSe:APERture MEDium Measurement speed set to medium.

:SENSe:APERture FAST Fastest measurement speed selected.

Response:

None

5–23



:SENSe:APERture?

Returns the measurement speed.

Parameters:

None

Response:

SLOW

MED

FAST

Measurement speed set to slow.

Measurement speed set to medium.

Measurement speed set to fast.

:SENSe:RANG:HOLD {OFF|ON}

The set measurement range is held or auto ranging is used.

Parameters:

:SENSe:RANG:HOLD OFF Auto ranging is used to select the measurement range.

:SENSe:RANG:HOLD ON The set measurement range is held.

Response:

None

:SENSe:RANG:HOLD?

Returns the range hold setting.

Parameters:

None

Response:

0 Auto ranging is used to select the measurement range.

1 The current measurement range will be used for all measurements.



:SOURce:FREQuency <numeric_val|MAX|MIN>[HZ|K|KHZ]

Sets the test frequency.

Parameters:

:SOURce:FREQuency <numeric_val>

:SOURce:FREQuency <numeric_val>HZ

:SOURce:FREQuency <numeric_val>K

Set test frequency <numeric_val>Hz.

Set test frequency <numeric_val>Hz.

Set test frequency <numeric_val>KHz.

:SOURce:FREQuency <numeric_val>KHZ Set test frequency <numeric_val>KHz.

:SOURce:FREQuency MAX

:SOURce:FREQuency MIN

Set test frequency 200KHz.

Set test frequency 100Hz.

Response:

None

5–25

:SOURce:FREQuency?

Returns the test frequency.

Parameters:

None

Response:

Test frequency in <NR3> format.

:SOURce:VOLTage <numeric_val|MAX|MIN>[V|MV]

Sets the test signal level.

Parameters:

:SOURce:VOLTage <numeric_val>

:SOURce:VOLTage <numeric_val>V

Set test level <numeric_val>V.

Set test level <numeric_val>V.

:SOURce:VOLTage <numeric_val>MV Set test level <numeric_val>mV.

:SOURce:VOLTage MAX

:SOURce:VOLTage MIN

Set test level 1V.

Set test level 50mV.

Response:

None



:SOURce:VOLTage?

Returns the test signal level.

Parameters:

None

Response:

Test signal level in <NR3> format.

:SOURce:VOLTage:BIAS:STATe {OFF|ON}

Controls the DC bias voltage.

Parameters:

:SOURce:VOLTage:BIAS:STATe OFF Removes the DC bias voltage.

:SOURce:VOLTage:BIAS:STATe ON Applies the DC bias voltage.

Response:

None

:SOURce:VOLTage:BIAS:STATe?

Returns the status for the DC bias voltage.

Parameters:

None

Response:

1 Bias applied

0 Bias removed

:TRIGger

Make a measurement.

Parameters:

None.

Response:

None.



:TRIGer:SOURce {INTernal|MANual|EXTernall|BUS}

Sets the trigger mode.

Parameters:

:TRIGer:SOURce INTernal Internal mode.

:TRIGer:SOURce MANual Manual mode using keyboard

:TRIGer:SOURce EXTernal External mode.

:TRIGer:SOURce BUS Bus mode.

Response:

None.

:TRIGer:SOURce?

Returns the trigger mode.

Parameters:

None

Response:

INT Internal mode.

MAN

EXT

BUS

Manual mode.

External mode.

Bus mode.

5–27

5–28

5.7.3.3 System Commands


SYSTEM COMMANDS

:SYSTem:ERRor?

Returns the GPIB error message in the 6372 error queue.

Parameters:

None

Response:

Error number.

:SYSTem:KLOCk {OFF|ON}

Locks or releases the front panel keys.

Parameters:

:SYSTem:KLOCk OFF Front panel keys can be operated by user.

:SYSTem:KLOCk ON Front panel keys are locked.

Response:

None

:SYSTem:KLOCk?

Returns the status for the front panel keys.

Parameters:

None

Response:

1 Front panel keyboard locked.

0 Front panel keyboard unlocked.

:SYSTem:LFRequency {50|60}

Sets the power line frequency compensation.

Parameters:

:SYSTem:LFRequency 50 Use with 50Hz power line frequency.

:SYSTem:LFRequency 60 Use with 60Hz power line frequency.

Response:

None


SYSTEM COMMANDS

:SYSTem:LFRequency?

Returns the setting for power line compensation.

Parameters:

None

Response:

50 50Hz power line.

60 60Hz power line.

:SYSTem:PRESet

Sets the 6372 to the following default states.

Parameter

Test signal frequency

Test signal level

Primary parameter

Secondary parameter

Measurement speed

Trigger mode

Deviation reference

Comparator limits

Comparator state

Deviation measurement

Range hold function

DC bias state

Beep mode

Correction state

Correction data

Power line frequency

GPIB address

Key lock function

Parameters:

None

Response:

None

:SYSTem:VERSion?

Default

1kHz

1V

LP

Q

Slow

Internal

Cleared

OFF

No effect

5–29


SYSTEM COMMANDS

Returns the 6372 system software version number.

Parameters:

None

Response:

Version number.

:SYSTem:BEEPer {OFF|PASS|FAIL}

Sets the system audible warning mode when making a comparative measurement.

Parameters:

:SYSTem:BEEPer OFF Audible warning turned off.

:SYSTem:BEEPer PASS Audible warning when comparison passes.

:SYSTem:BEEPer FAIL Audible warning on failure

Response:

None.

:SYSTem:BEEPer?

Returns the audible warning mode set.

Parameters:

None

Response:

OFF Audible warning is turned off.

PASS Audible warning is given when comparison passes.

FAIL Audible warning is given when comparison fails.


5.8 Error Massages

-100 Command error

-101 Invalid character

-102 Syntax error

-103 Invalid separator

-108 Parameter not allowed

-109 Missing parameter

-112 Program nmemonic too long

-113 Undefined header

-115 Unexpected number of parameter

-141 Invalid character data

-160 Block data error

-211 Trigger ignored

-222 Data out of range

-223 Too much data

-224 Illegal parameter value

-410 Query interrupted

-420 Query unterminated

5.9 Programming Examples

5.9.1

Set the Power Line Frequency to 50 Hz

:SYST:LFR 50

5.9.2

Select the Z and Phase Measurement Parameters

:CALC1:FORM Z

:CALC2:FORM PHAS

5.9.3

Select 100 Hz as the Test Signal Frequency

:SOUR:FREQ 100

5–31


5.9.4 Select 1V as the Test Signal Level

:SOUR:VOLT 1

5.9.5 Hold the Measurement Range

:SENS:RANG:HOLD ON

5.9.6

Perform Short Circuit Correction

:SENS:CORR SHOR

5.9.7

Set the Measurement Speed to Slow

:SENS:APER SLOW

5.9.8

Save and Recall Instrument Settings

*SAV 10

*RCL 20

5.9.9

Trigger and Retrieve a Measurement

5.9.9.1 Internal Trigger

:TRIG:SOUR INT delay

:FETC?

(Set internal trigger as trigger source)

(Wait until measurement is complete)

(Retreieve data from 6372 output buffer)

5.9.9.2 Bus Trigger

:TRIG:SOUR BUS

*TRG

(Set the GPIB bus as trigger source)

(Trigger the measurement and retrieve data from buffer)

Serial Bus (RS-232)

6. SERIAL BUS (RS-232)

6.1 Protocol

Baud rate: 9600bps

Character length: 8bits

Stop bit: 1bit

Parity: Non-parity

Character: ASCII character

6.2 Serial Port Connections

Function

RxD

TxD

GND

RTS

CTS

6372

Pin 2

Pin 3

Pin 5

Pin 7

Pin 8

Controller

Pin 3

Pin 2

Pin 5

Pin 8

Pin 7

6.3 Commands

All the RS-232 commands and functions are totally the same as the GPIB command except the

SRQ function.

The command is terminate by LF Line Feed (ASCII code 10); only the LF is effective as the terminator.

6–1

Specification

7–1

7. SPECIFICATION

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), Impedance (Z), Admittance (Y) and Phase Angle (θ).

The following display formats are available:

C+R, C+D, C+Q, L+R, L+Q, L+D, R+X, Y + Phase Angle, Y + Phase Angle, G+B

7.2 Measurement ranges

|Z| R X

0.01 mΩ to 100.0 MΩ

|Z| G B 0.0001 nS to 1000.0 S

C

s

C

p

0.01 pF to 1 F

L

s

L

p

1 µH to 100 kH

D 0.0001 to 9.9999

Q 0.1 to 9999.9

Ø -180° to +180°

Δ -999.99% to 999.99%

DCR

0.01 mΩ to 100.00 MΩ

7.3 Measurement Speeds

Fast 5 measurements per second

Medium 3 measurements per second

Slow 2 measurements per second

Specification

7.4 AC Frequency Range:

100Hz to 200KHz , Accuracy of set frequency ±0.01%

Frequency Steps (Unit=KHz)

0.10 0.11 0.12 0.13 0.14 0.15 0.16 0.17 0.18 0.19

0.20 0.21 0.22 0.23 0.24 0.25 0.26 0.27 0.28 0.29

0.30 0.31 0.32 0.33 0.34 0.35 0.36 0.37 0.38 0.39

0.40 0.41 0.42 0.43 0.44 0.45 0.46 0.47 0.48 0.49

0.50 0.51 0.52 0.53 0.54 0.55 0.56 0.57 0.58 0.59

0.60 0.61 0.62 0.63 0.64 0.65 0.66 0.67 0.68 0.69

0.70 0.71 0.72 0.73 0.74 0.75 0.76 0.77 0.78 0.79

0.80 0.81 0.82 0.83 0.84 0.85 0.86 0.87 0.88 0.89

0.90 0.91 0.92 0.93 0.94 0.95 0.96 0.97 0.98 0.99

1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09

1.10 1.11 1.12 1.13 1.14 1.15 1.16 1.17 1.18 1.19

1.20 1.21 1.22 1.23 1.24 1.25 1.26 1.27 1.28 1.29

1.30 1.31 1.32 1.33 1.34 1.35 1.36 1.37 1.38 1.39

1.40 1.41 1.42 1.43 1.44 1.45 1.46 1.47 1.48 1.49

1.50 1.51 1.52 1.53 1.54 1.55 1.56 1.57 1.58 1.59

1.60 1.61 1.62 1.63 1.64 1.65 1.66 1.67 1.68 1.69

1.70 1.71 1.72 1.73 1.74 1.75 1.76 1.77 1.78 1.79

1.80 1.81 1.82 1.83 1.84 1.85 1.86 1.87 1.88 1.89

1.90 1.91 1.92 1.93 1.94 1.95 1.96 1.97 1.98 1.99

2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09

2.11 2.12 2.13 2.14 2.15 2.16 2.17 2.19

2.20 2.21 2.22 2.23 2.25 2.26 2.27 2.29

2.30 2.31 2.33 2.34 2.35 2.37 2.38

2.40 2.41 2.42 2.44 2.45 2.47 2.48

2.50 2.52 2.53 2.55 2.56 2.58

2.60 2.61 2.63 2.65 2.67 2.68

2.70 2.72 2.74 2.76 2.78

2.80 2.82 2.84 2.86 2.88

2.90 2.92 2.94 2.96 2.99

3.01 3.03 3.05 3.08

3.10 3.12 3.15 3.17

3.20 3.23 3.25 3.28

3.31 3.33 3.36 3.39

3.42 3.42 3.45 3.48

3.51 3.54 3.57

3.60 3.64 3.67

3.70 3.74 3.77

3.81 3.85 3.88

3.92 3.96

4.00 4.04 4.08

4.12 4.17

4.21 4.26

4.30 4.35

4.40 4.44 4.49

7–2

4.55

4.60 4.65

Specification

4.71 4.76

4.82 4.88

4.94

5.00 5.06 5.13 5.19 5.26 5.33 5.41 5.48 5.56 5.63 5.71 5.80 5.88 5.97

6.06 6.15 6.25 6.35 6.45 6.56 6.67 6.78 6.90

7.02 7.14 7.27 7.41 7.55 7.69 7.84

8.00 8.16 8.33 8.51 8.70 8.89

9.09 9.30 9.52 9.76

10.00 1.26 10.53 10.81

11.11 11.43 11.76

12.12 12.50 12.90

13.33 13.79

14.29 14.81

15.38 16.00 16.67 17.39 18.18 19.05

20.00 21.05 22.22 23.53 25.00 26.67 28.57

30.77 33.33 36.36 40.00 44.44 50.00 57.14 66.67 80.00

100.00 133.33 200.00

Drive Level (AC & DC Measurements)

C Open circuit voltage: 0.05V, 0.1V, 0.25V, 0.5V, 1V

C Open circuit voltage: 0.5V

(Simulated Rdc measurement using 5 Hz square wave)

Signal source impedance:100Ω nominal

Accuracy: 10%

Bias Voltage 2V

7.5 Measurement Connections

4 front panel BNC guarded connectors with the screens at ground potential.

Terminals withstand connection of charged capacitor up to 5V, either polarity.

7–3

7.6 Measurement Accuracy

The accuracy statements given apply when the instrument is used under the following measurement conditions.

Slow speed, 4-terminal measurement. The instrument must have warmed up for at least 30 minutes at a steady ambient temperature of between 18°C and 28°C. The instrument must have been trimmed with its measuring leads and fixture at the measurement frequency.

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.

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 LCR meter has been trimmed at the frequency and level used for measurements, factory calibration are valid and that the component under test is pure.

|Z| Accuracy Chart

Specification

7–4

|Z| vs L, C Chart

Specification

7–5

|Z|, |Y|, L, C, R, X, G, B and Rdc Accuracy

For high impedance ( >10kOhm) value:

Ae[%] = ±((A + 0.0000001*Zx) * Kv * Kt)

For low impedance ( <1kOhm) 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)

Specification

L, C, X, and B accuracy apply when D < 0.1

R, G accuracy apply when Qx < 0.1

When D ≧ 0.1, multiply Ae by √ 1 + D

² for L, C, X and B accuracies.

When Q≧ 0.1, multiply Ae by √1 + Q

² for R, and B accuracies

Rdc accuracy: Refer to the Z accuracy at 100Hz.

D Accuracy

De = ±(Ae / 100)

If D > 0.1, multiply D accuracy by (1+D

²)

Q Accuracy

Qe = ±((Qx

²

*De) /

(

1

±

Qx*De))

Where, Qx is the measured Q value,

De is the relative D accuracy.

Accuracy applies when Qx * De < 1

1V

1

0.5V

1

0.25V

1

0.1V 1.5

0.05V 2.5

Table A. Test voltage factor

Temperature(°C

) Kt

8-18 2

18-28 1

28-35 2

Table B Temperature factor

7.7 Measurement speed

Update rate for trigger mode = Internal

Fast: 5 times per second.

Medinum: 3 times per second.

Slow: 2 times per second.

Update rate for tigger mode= Manual, External, Bus

Fast: 2.5 times per second.

Medinum: 1.5 times per second.

Slow: 1 time per second.

7–6

Specification

7.8 Comparator test mode

Upper and lower test limits in units and percentage

7.9 Ranging

Auto and Hold

7.10 Trigger

Internal, Manual, External and Bus

7.11 Display and indicators

240 x 64 pixel dot matrix LCD

PASS, FAIL and BIAS LED indicators

Internal loudspeaker

7.12 Memory

127 instrument set-up conditions can be saved

7.13 Interfaces

RS232 port, Handler Interface, GPIB

7.14 Power supply

Input voltage 90 to 132 V AC, 198 to 264 V AC (selectable)

Frequency 47 to 66 Hz

Power 45 VA typical

7.15 Environmental

Installation category II in accordance with IEC664

Temperature range Operating: 10°C to 40°C

Relative humidity Up to 90% non-condensing

Pollution degree 2 (mainly non-conductive)

Altitude Up to 2000 m

7.16 Safety

Complies with the requirements of EN61010-1

7.17 EMC

Immunity EN61326-1

Emissions EN55022 Class A

7.18 Mechanical

Height 150 mm

Width 320 mm

Depth 300 mm

Weight 6 kg without accessories

7–7

Maintenance, Support and Services

8. MAINTENANCE, SUPPORT AND SERVICES

8–1

8.1 Guarantee

The equipment supplied by MICROTEST CORPORATION 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.

The equipment has been carefully inspected and submitted to comprehensive tests at the factory prior to dispatch. If, within the guarantee period, any defect is discovered in the equipment in respect of material or workmanship and reasonably within our control, we undertake to make good the defect at our own expense subject to our standard conditions of sale. In exceptional circumstances and at the discretion of the service manager, a charge for labour and carriage costs incurred may be made.

Our responsibility is in all cases limited to the cost of making good the defect in the equipment itself. The guarantee does not extend to third parties, nor does it apply to defects caused by abnormal conditions of working, accident, misuse, neglect or wear and tear.

8.2 Maintenance

8.2.1 Cleaning

The body of the equipment can be cleaned with a damp lint-free cloth. Should it be required, weak detergents can be used. No water must enter the equipment. Do not attempt to wash down internal parts.

8.2.2 Safety Checks

Each year the equipment should be given a simple safety check.

8.2.2.1 Equipment required

25A ground bond tester (e.g. Megger PAT 2)

Insulation tester @ 500V DC (e.g. Megger BM 7)

8.2.2.2 Tests

5) DISCONNECT THE INSTRUMENT FROM THE AC MAINS POWER SUPPLY!

6) 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.

7) Ground Bond: Ensure that 25A DC can flow from exposed metal parts of the unit (not connectors) to ground with an impedance of less than 100mΩ.

8) Insulation Test: Connect the Live and Neutral of the power cable together and test the insulation between this point and the ground at 500V DC. Readings greater than 1MΩ are

acceptable.

8–2 Maintenance, Support and Services

8.3 Support and Service

In the event of difficulty, or apparent circuit malfunction, it is advisable to contact the service department or your local sales engineer or agent (if overseas) for advice before attempting repairs.

For repairs and recalibration it is recommended that the complete instrument be returned to one of the following:

Taiwan (R.O.C.)

Microtest

14F-6, No.79, Hsin Tai Wu Road, Sec. 1,

Hsi-chih, Taipei 221, Taiwan, R.O.C.

Tel: +886-2-2698-4104

Fax: +886-2-2698-0716

Email: [email protected]

www.microtest.com.tw

When returning the instrument please ensure adequate care is taken with packing and arrange insurance cover against transit damage or loss. If possible re-use the original packing box.

MICROTEST 6370, 6371, 6372 LCR Meter User Manual 76 Pages

MICROTEST 6370, 6371, 6372 LCR Meter User Manual

User Manual

NOV 2011

CONTENTS

ILLUSTRATIONS

1. SAFETY

1.1 General

1.2 AC Power Supply

1.3 Adjustment, Maintenance and Repair

1.4 Static Electricity

2. INTRODUCTION

3. INSTALLATION

3.1 AC Line Connections

3.2 Location

4. OPERATION

4.1 The Rear Panel

4.3 Switching the unit on

4.4 Switching the unit off

4.5 Indicators

4.6 Measurement Connections

Four-Terminal Component Fixture (optional accessory—

(optional accessory—

4.7 Keys

4.7.1 Para

4.7.2 Cal

4.7.3 Comp

4.7.4 Mode

4.7.5 Save/Rcl

4.7.6 Conf

4.7.7 Local

4.7.8 Bias

4.7.9 Numeric Keypad

4.7.10 Navigation Keys

4.7.11 Enter

4.7.12 Trig

4.7.13 Soft keys

4.7.14 Reset

4.8 Instrument Set-up

4.8.1 System Configuration

4.8.1.1 Line Frequency

4.8.1.2 Beep Function

4.8.1.3 GPIB Address

4.8.2 Calibrate Mode

4.8.2.1 Short Trim

4.8.2.2 Open Trim

4.8.3 Parameters

Press the front panel Para key to select the primary and secondary measurement parameters. A

or symbol at the edge of the screen indicates that further parameters are available. Use the

or navigation key, as appropriate, to show the other parameters.

1) Press the front panel Para key. The Primary Parameter menu will be displayed. To see

more parameters, press the navigation key.

4.8.4 Comparator

To leave the current setting unchanged, use the Enter key or the to move to the next deviation mode setting.

navigation keys

4.8.5 Deviation Mode

To leave the current setting unchanged, use the Enter key or the to move to the next deviation mode setting. navigation keys

4.8.6 Trigger

4.8.7 Save/Rcl

4.8.7.1 Save

4.8.7.2 Recall

4.9 Measuring a Component

4.9.1 General

4.9.2 Examples

4.9.2.1 Inductance Measurement

4.9.2.2 Resistance Measurement

4.9.2.3 Impedance Measurement

4.9.2.4 Capacitance Measurement

5. GENERAL PURPOSE INTERFACE BUS (GPIB)

5.1 Introduction

5.1.1 Interface Specification

5.1.2 Changing the GPIB Address

5.2 Returning to Local Mode

5.3 Getting Data from the 6372

5.4 Numeric data NR1, NR2, NR3

5.5 Control sequence

5.6 Status Reporting

5.6.1 Status Byte Register (SBR)

5.6.2 Service Request Enable Register (SRE)

5.6.3 Standard Event Status Register (ESR)