Agilent Technologies 4285A Started Manual Download Page 34 | Manualshive

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background image

DC

V

oltage

Biased

Measurement

When

the

4285A

is

equipped

with

Option

001

DC

Bias

,

640V

(100

mA)

DC

bias

can

be

applied

to

the

DUT

.

In

this

example

,

a

470

pF

capacitor

will

be

measured

under

the

following

conditions

.

DUT

:

470

pF

ceramic

capacitor

(Agilent

P

art

Number

0160-4808)

Measurement

Conditions

Function

:

C

p

-

D

Frequency

:

5

MHz

T

est

Signal

Level

:

1

V

(Constant)

DC

Bias

Level

:

5

V

Equipment

Required

4285A

with

Option

001

16047C

T

est

Fixture

Shorting

bar

(Agilent

P

art

Number

5000-4226)

or

equivalent

Preparation

Before

Measurement

Checking

the

Option

Installed

First

of

all,

conrm

that

your

4285A

is

equipped

with

the

Option

001.

T

o

do

this

,

press

4

CA

T

ALOG/SYSTEM

5

and

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

SYSTEM

CONFIG

,

and

check

the

DC

BIAS

(#001)

monitor

area.

When

INSTALLED

is

displayed

in

this

area,

your

4285A

is

equipped

with

Option

001.

Operation

Procedure

1.

Turn

the

4285A

ON.

2.

Set

the

4285A

to

the

normal

LCR

measurement

mode

which

uses

the

auto

balancing

bridge

measuring

method.

a.

Press

4

CA

T

ALOG/SYSTEM

5

and

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

SYSTEM

CONFIG

.

SY

STEM

CONFIG

page

will

now

be

displayed

b.

Move

the

CURSOR

to

the

CONFIG

eld.

NNNNNNNNNNNNNNNNNNNN

I

BIAS

,

NNNNNNNNNNNNNNNNNNNNNNNNNNNNN

Q

ADAPTER

,

and

N

NNNNNNNNNN

OFF

will

be

displayed.

c.

Press

NNNNNNNNNNN

OFF

to

perform

the

normal

LCR

measurement.

3.

Setup

the

4285A

measurement

conditions

by

modifying

the

elds

on

the

MEAS

DISPLA

Y

page

.

Set

FREQuency

to

5

MHz

and

LEVEL

to

a

constant

1

V

.

(The

other

functions

will

be

left

at

the

default

settings

.)

a.

Move

the

CURSOR

to

the

FREQ

eld.

The

current

measurement

frequency

,

1.0000MHz ,

will

be

displayed

in

this

eld.

b.

Press

4

5

5 .

5

will

be

displayed

on

the

system

message

line

,

and

the

softkey

lables

are

changed

to

the

available

units

(

NNNNNNNNNNN

kHz

and

NNNNNNNNNNN

MHz

).

Press

NNNNNNNNNNN

MHz

.

5.0000MHz

will

be

new

displayed

in

the

FREQ

eld.

c.

Press

4

MEAS

SETUP

5 .

The

MEAS

SETUP

page

will

be

displayed.

3-10

Basic

Measurement

Examples

«
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Summary of Contents for 4285A

Page 1: ... 4285A Precision LCR Meter Getting Started Guide SERIAL NUMBERS This manual applies directly to instruments with serial number pre x 3009J Agilent Part No 04285 90011 Printed in JAPAN March 2001 Fourth Edition ...

Page 2: ...copyright All rights are reserved No part of this document may be photocopied reproduced or translated to another language without the prior written consent of the Agilent Technologies Agilent Technologies Japan Ltd Component Test PGU Kobe 1 3 2 Murotani Nishi ku Kobe shi Hyogo 651 2241 Japan c Copyright 1990 1996 2000 2001 Agilent Technologies Japan Ltd ...

Page 3: ...ons and updates which are incorporated at reprint do not cause the date to change The manual part number changes when extensive technical changes are incorporated June 1990 First Edition part number 04285 90001 December 1996 Second Edition part number 04285 90011 March 2000 Third Edition part number 04285 90011 March 2001 Fourth Edition part number 04285 90011 iii ...

Page 4: ... de nite safety hazard Keep Away From Live Circuits Operating personnel must not remove instrument covers Component replacement and internal adjustments must be made by quali ed maintenance personnel Do not replace components with the power cable connected Under certain conditions dangerous voltages may exist even with the power cable removed To avoid injuries always disconnect power and discharge...

Page 5: ... This Warning sign denotes a hazard It calls attention to a procedure practice condition or the like which if not correctly performed or adhered to could result in injury or death to personnel This Caution sign denotes a hazard It calls attention to a procedure practice condition or the like which if not correctly performed or adhered to could result in damage to or destruction of part or all of t...

Page 6: ...c measurements and explains commonly used features The 4285A OPERATION MANUAL Agilent Part Number 04285 90020 provides general information speci cations GPIB programming information and in depth reference information The 4285A MAINTENANCE MANUAL Agilent Part Number 04285 90030 explains how to verify conformance to published speci cations The 4285A SERVICE MANUAL Agilent Part Number 04285 90031 exp...

Page 7: ...s calibration facility or to the calibration facilities of other International Standards Organization members Warranty This Agilent Technologies instrument product is warranted against defects in material and workmanship for a period of one year from the date of shipment except that in the case of certain components listed in Components not Covered by Warranty in Chapter 1 of this manual the warra...

Page 8: ...ilent Technologies speci cally disclaims the implied warranties of merchantability and tness for a particular purpose Exclusive Remedies The remedies provided herein are buyer s sole and exclusive remedies Agilent Technologies shall not be liable for any direct indirect special incidental or consequential damages whether based on contract tort or any other legal theory Assistance Product maintenan...

Page 9: ...d 1 5 Interconnecting Cables 1 5 2 Getting Acquainted with the 4285A Front Panel Description 2 1 LCD Panel and Softkey 2 1 MENU keys and Display Pages 2 2 CURSOR and CURSOR Keys 2 3 ENTRY Keys 2 4 GPIB Status Indicator and 4LCL5 Key 2 4 4TRIGGER5 Key 2 4 Memory Card Slot 2 5 4DC BIAS5 Key 2 5 Contrast Control Knob 2 5 Front Panel Operation 2 6 3 Basic Measurement Examples Introduction 3 1 Capacito...

Page 10: ...Preparation Before Measurement 3 27 Checking the Option Installed 3 27 Con gure the Precision Q measurement System 3 27 Operation Procedure 3 28 4 Instrument Feature Tutorial Memory Function 4 1 System Memory 4 1 Internal Non Volatile Memory External Memory Card 4 2 Automatic Level Control Function 4 3 ALC Theory of Operation 4 3 ALC Measurement Time 4 4 ALC Voltage Current Setting Range 4 4 Opera...

Page 11: ... 12 Connecting DUT 3 13 3 13 Voltage Biased Option 001 Measurement Results 3 13 3 14 Cable Correction Page 3 15 3 15 42102A 100 Resistor connection 3 15 3 16 OPEN Termination Connection 3 16 3 17 OPEN Termination Alternative 3 16 3 18 SHORT Termination Connection 3 17 3 19 SHORT Termination Alternative 3 18 3 20 100 Resistor Connection 3 18 3 21 42842C Bias Current Test Fixture Connection 3 21 3 2...

Page 12: ...Tables 1 1 Line Voltage Selection 1 2 1 2 Fuse Selection 1 3 4 1 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PRINT DISP and NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PRINT DATA Availability 4 9 Contents 4 ...

Page 13: ...surement Examples Memory Function Structure Automatic Level Control Function Operation List Sweep Function Operation Printing Measurement Result Performing Error Correction Function Initial Considerations The 4285A has been carefully inspected both electrically and mechanically before being shipped from the factory Verify this by carefully performing an incoming inspection to check the instrument ...

Page 14: ...Line Voltage Selector Caution Before connecting the instrument to the power source make sure that the correct fuse has been installed and the Line Voltage Selection Switch is correctly set Line Voltage Selection Select the proper voltage selector according to the Table 1 1 Table 1 1 Line Voltage Selection Voltage Selector Line Voltage 115 V 90 132 V 47 66 Hz 230 V 198 252 V 47 66 Hz Fuse Selection...

Page 15: ...to the device under test dut Equipment Required To perform high current biased impedance measurement the following equipment are required 4285A Precision LCR Meter with Option 002 42841A Bias Current Source 42842C Bias Current Test Fixture 16048A Test Leads Check the Option slots in the rear panel of the 4285A to con rm that Option 002 is installed Option 002 has a 50 pin Amphenol connector and is...

Page 16: ... Bias Current System Con guration Setting Up the Precision Q Measurement System Combined with the 42851A the 4285A performs precision Q measurement using the resonant measurment method Equipment Required To perform precision Q measurement the following equipment are required 4285A Precision LCR Meter with Option 002 42851A Precision Q Adapter 10503A BNC Coaxial Cable 2 ea Interconnecting the Units...

Page 17: ...following equipment are required 4285A Precision LCR Meter with Option 002 42841A Bias Current Source 42842C Bias Current Test Fixture 42851A Precision Q Adapter 16048A Test Leads 10503A BNC Coaxial Cable 2 ea Interconnecting Cables Connect the cables between the 4285A the 42841A and the 42851A as shown in Figure 1 4 using the following procedure 1 Connect the ACCESSORY CONTROL INTERFACE connector...

Page 18: ...he TO UNKNOWN terminals of the 42851A using two 10503A BNC coaxial cables Figure 1 4 Chaining the 42841A and the 42851A To learn how to use the 4285A Precision LCR Meter and its accessories continue with the next chapter The 4285A has already passed its self test and is ready to make measurements If you want an electrical inspection incoming inspection for instance go through the 4285A Maintenance...

Page 19: ...or each of the many instrument functions the 4285A employes LCD Liquid Crystal Display displayed menus for operator input These menus list the possible choices for a particular function with each choice corresponding to one of the ve softkeys located to the right of the LCD screen In this guide the two types of keys are di erentiated in this way 4HARDKEY5 Keys on the front panel NNNNNNNNNNNNNNNNNN...

Page 20: ...nt when combined with the 42841A and 42842C These measurement modes can be changed on the CONFIG eld in SYSTEM CONFIG page under 4CATALOG SYSTEM5 The 4285A has three MENU keys and each MENU key has four display pages as follows Figure 2 2 MENU Keys 4DISPLAY FORMAT5 The display pages under this menukey are used to choose the measurement display format sorting and sweep results The 4285A performs me...

Page 21: ... page CABLE CORRECTION page SELF TEST page Note When the 42851A Precision Q Adapter is connected to the 4285A and activated all display pages format under 4DISPLAY FORMAT5 and 4MEAS SETUP5 will be changed For operation information refer to Precision Q Measurement in Chapter 3 Di erence between Field and Monitor Area A eld is an area on the LCD screen to set an instrument function A monitor area is...

Page 22: ...keys also teminate numeric input data and enters the displayed value on the input line in the speci ed unit Figure 2 3 Entry Keys GPIB Status Indicator and 4LCL5 Key The General Purpose Interface Bus gpib status indicators consist of the RMT remote TLK talk LTN listen and SRQ service request indicators These indicators are used to show the 4285A s GPIB status when it is connected to a controller c...

Page 23: ...y be lost Store memory cards in their furnished card cases when not in use The card case protects memory cards from contamination and electrostatic discharge Also store memory cards under the following environmental conditions Storage Temperature Range 030 C to 70 C Storage Humidity Range 30 to 85 50 C Do NOT shock or stress memory cards When storing or moving your 4285A be sure the memory card sl...

Page 24: ... Keys and Field Operation Example 3 Di erent softkeys will be displayed corresponding to the position of the CURSOR Select and press a softkey The numeric entry keys and 4ENTER5 are used to enter numeric data When one of the numeric entry keys is pressed the softkeys will change to the softkeys labeled by the unit names available You can use these unit softkeys instead of 4ENTER5 When 4ENTER5 is u...

Page 25: ... to the normal LCR measurement mode which uses the auto balancing bridge measuring method a Press 4CATALOG SYSTEM5 and NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN SYSTEM CONFIG SYSTEM CONFIG page will now be displayed b Move the CURSOR to CONFIG eld NNNNNNNNNNNNNNNNNNNN I BIAS NNNNNNNNNNNNNNNNNNNNNNNNNNNNN Q ADAPTER and NNNNNNNNNNN OFF will be displayed c Press NNNNNNNNNNN OFF to perform a normal LC...

Page 26: ... INCR 1Hz and NNNNNNNNNNNNNNNNNNNNNNNNNN DECR 1Hz increment and decrement the current test frequency with the speci ed step value respectively The step value can be changed with NNNNNNNNNNNNNN 1kHz and NNNNNNNNNNNNNN 1MHz which will be displayed when the numeric value is entered from the entry keys The default step value is 100 Hz Note The measurement conditions can also be set on the MEAS SETUP p...

Page 27: ...OPEN measurement completed is displayed on the system message line e Press NNNNNNNN ON to set the OPEN correction function to ON f Connect a shorting bar to the 16047C to set up the SHORT condition as shown in Figure 3 2 Figure 3 2 Connecting a Shorting Bar g Move the CURSOR to the SHORT eld NNNNNNNN ON NNNNNNNNNNN OFF and NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN MEAS SHORT are displayed h Press NNNNNNNNN...

Page 28: ...h the 16047C s electrodes Figure 3 3 Connecting DUT to the 16047C 7 Perform the measurement Press 4DISPLAY FORMAT5 The internal trigger starts and continuously repeats the measurements The capacitor s measured Cp and D values are displayed in large characters as shown in Figure 3 4 Figure 3 4 Measurement Results for a 220 pF Capacitor 3 4 Basic Measurement Examples ...

Page 29: ...er functions will be left at the default settings a Move the CURSOR to the FUNC eld The Current measurement function Cp D is displayed in this eld and NNNNNNNNNNNNNN Cp D NNNNNNNNNNNNNN Cp Q NNNNNNNNNNNNNN Cp G NNNNNNNNNNNNNNNNN Cp Rp and NNNNNNNNNNNNNNNNNNNNNNNNNN more 1 6 are displayed b Press NNNNNNNNNNNNNNNNNNNNNNNNNN more X 6 until it is changed to NNNNNNNNNNNNNNNNNNNNNNNNNN more 4 6 and NNNN...

Page 30: ...est signal current level to be constant 4 Connect the test xture to the 4285A The 16034E chip Test Fixture for chip components is used for this measurement Connect the 16034E to the UNKNOWN terminals of the 4285A as shown in Figure 3 5 Figure 3 5 Connecting the 16034E 5 Perform OPEN SHORT correction OPEN SHORT correction is required to compensate the residual impedance and stray admittance of the ...

Page 31: ...NNNNNNNNNNNNNNNNNNNNNNNNNNN MEAS OPEN to perform the OPEN correction data measurement Wait approximately 50 seconds until the message OPEN measurement completed is displayed on the system message line e Press NNNNNNNN ON to set the OPEN correction function to ON f Connect the 16034E s two electrodes directly together to make a SHORT as shown in Figure 3 7 i Loosen the Knob ii Push the end of the h...

Page 32: ...NNNNNNNNNNNNNNNNNNNN MEAS SHORT to perform the SHORT correction data measurement Wait approximately 50 seconds until the message SHORT measurement completed is displayed on the system message line i Press NNNNNNNN ON to set the SHORT correction function to ON 6 Connect the DUT to the test xture Place the DUT on the 16034E s measurement block as shown in Figure 3 8 3 8 Basic Measurement Examples ...

Page 33: ...Ls and Rs values of the ferrite cored inductor are displayed in large characters as shown in Figure 3 9 MEAS DISPLAY SYS MENU FUNC Ls Rs RANGE AUTO FREQ 25 2000MHz BIAS 0 000 V LEVEL 10 0mA INTEG LONG L s 4 5 5 6 8 7 n H R s 1 6 6 4 1 9 Vm 957 5mV Im 10 01mA CORR OPEN SHORT CBL 0m Figure 3 9 Measurement Results of The Ferrite Cored Inductor Basic Measurement Examples 3 9 ...

Page 34: ... 4285A ON 2 Set the 4285A to the normal LCR measurement mode which uses the auto balancing bridge measuring method a Press 4CATALOG SYSTEM5 and NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN SYSTEM CONFIG SYSTEM CONFIG page will now be displayed b Move the CURSOR to the CONFIG eld NNNNNNNNNNNNNNNNNNNN I BIAS NNNNNNNNNNNNNNNNNNNNNNNNNNNNN Q ADAPTER and NNNNNNNNNNN OFF will be displayed c Press NNNNNNNNN...

Page 35: ... the 16047C in an OPEN condition as shown in Figure 3 10 b Press 4MEAS SETUP5 and NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN CORRECTION The CORRECTION page will now be displayed c Move the CURSOR to the OPEN eld NNNNNNNN ON NNNNNNNNNNN OFF and NNNNNNNNNNNNNNNNNNNNNNNNNNNNN MEAS OPEN will be displayed d Press NNNNNNNNNNNNNNNNNNNNNNNNNNNNN MEAS OPEN to perform the OPEN correction data measurement Wait until t...

Page 36: ...NNNNNNNNNNNNNNNNNNN MEAS SHORT to perform the SHORT correction data measurement Wait until the message SHORT measurement completed will be displayed on the system message line i Press NNNNNNNN ON to set the SHORT correction function to ON 6 Connect a DUT to the test xture Insert the DUT into the 16047C s measurement contacts deeply as shown in Figure 3 12 3 12 Basic Measurement Examples ...

Page 37: ...citors measured Cp and D values are displayed as large characters as shown in Figure 3 13 MEAS DISPLAY SYS MENU FUNC Cp D RANGE AUTO FREQ 5 0000MHz BIAS 5 000 V LEVEL 1 00 V INTEG MED C p 3 8 9 8 1 8 p F D 0 5 2 3 0 7 Vm 1 001 V Im 12 70mA CORR OPEN SHORT CBL 0m Figure 3 13 Voltage Biased Option 001 Measurement Results Basic Measurement Examples 3 13 ...

Page 38: ...tion described below to adopt the 4285A to the individual 16048A D test leads Once this cable correction is performed the measured cable correction data is stored in non volatile memory and is not lost when the 4285A is turned OFF Equipment Required 42100A or the following equivalents 100 Resister Box Furnished to the 4285A Agilent Part Number 04285 61001 BNC female female Adapter Furnished to the...

Page 39: ...85 61001 can be used as a substitute Figure 3 15 42102A 100 Resistor connection 5 Press NNNNNNNNNNNNNNNNNNNNNNN REF 0m REF measurement will be displayed on the system message line Wait until the 4285A beeps and displays the REF measurement complete An will be displayed on the left side of NNNNNNNNNNNNNNNNNNNNNNN REF 0m 6 Connect 16048A D Test Leads to the UNKNOWN terminals of the 4285A Basic Measu...

Page 40: ...female female adapters Agilent Part Number 1250 0080 as shown in Figure 3 16 Figure 3 16 OPEN Termination Connection If you don t have the 42090A OPEN Termination con gure as shown in Figure 3 17 using the furnished BNC f f adapters Figure 3 17 OPEN Termination Alternative 3 16 Basic Measurement Examples ...

Page 41: ...on the left side of NNNNNNNNNNNNNN OPEN 9 Connect the 42091A SHORT Termination of the 42100A and the 16048A D test leads with the furnished BNC f f adapters as shown in Figure 3 18 Figure 3 18 SHORT Termination Connection If you don t have the 42091A SHORT Termination con gure as shown in Figure 3 19 with a BNC T m f f adapters and the furnished BNC f f adapters Basic Measurement Examples 3 17 ...

Page 42: ...until the 4285A beeps and displays the SHORT measurement completed An will be displayed on the left side of NNNNNNNNNNNNNNNNN SHORT 11 Connect the 42102A 100 Resistor or the furnished 100 Resistor Box and the 16048A D test leads with the furnished BNC f f adapters as shown in Figure 3 20 Figure 3 20 100 Resistor Connection 3 18 Basic Measurement Examples ...

Page 43: ... An will be displayed on the left side of NNNNNNNNNNNNNN LOAD 13 Press NNNNNNNNNNNNNN SAVE Saving cable correction data will be displayed in the system message line Wait until the 4285A beeps and displays the CABLE CORRECTION page Note When di erent 16048A D test leads are to be used the cable correction measurement procedure must be redone Basic Measurement Examples 3 19 ...

Page 44: ...rement First of all performed the cable correction if you have already performed the cable correction procedure described in Measurements Using 1m 2m Test Leads skip to Checking the Option Installed Checking the Option Installed First of all con rm that your 4285A is equipped with Option 002 To do this press 4CATALOG SYSTEM5 and NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN SYSTEM CONFIG and check the...

Page 45: ... the guide rods of the 42842C into the guide holes on the front of the 42841A 2 Connect the input terminal of the 42842C to the output terminal of the 42841A pressing the 42842C toward the 42841A 3 Rotate retaining screws clockwise in front of the 42842C until it rocks Basic Measurement Examples 3 21 ...

Page 46: ... Setup The 4285A the 42841A and the 42842C must be connected with a bias current interface cable and 16048A test leads as shown in Figure 3 22 using the following procedure 1 Connect the UNKNOWN terminals of the 4285A and the TO UNKNOWN terminals of the 42842C using the 16048A test leads 2 Connect the ACCESSORY CONTROL INTERFACE connector of the 4285A and the BIAS CONTROL INPUT A connector of the ...

Page 47: ...g the elds on the MEAS DISPLAY page Set the frequency to 25 2 MHz and the DC bias level to 1A Other settings are left at the default settings a Move the CURSOR to the FREQ eld The current measurement frequency 1 0000MHz will be displayed in this eld b Press 425 455 4 5 and 425 25 2 is displayed on the system message line and the softkey labels change to the available units NNNNNNNNNNN kHz and NNNN...

Page 48: ...C c Move the CURSOR to the OPEN eld NNNNNNNN ON NNNNNNNNNNN OFF and NNNNNNNNNNNNNNNNNNNNNNNNNNNNN MEAS OPEN are displayed d Press NNNNNNNNNNNNNNNNNNNNNNNNNNNNN MEAS OPEN to perform the OPEN correction data measurement Wait approximetory 50 seconds until the message OPEN measurement completed will be displayed on the system message line e Press NNNNNNNN ON to set the OPEN correction function to ON ...

Page 49: ...NNNNNNNN ON to set the SHORT correction function to ON 5 Connect the DUT to the test xture Connect the DUT to the 42842C measurement terminals and close the test xture protective cover 6 Enable the DC bias output Press 4DC BIAS5 on the 4285A front panel to turn the DC bias ON The DC bias on o LED indicators of the 4285A and the 42841A will come ON simultaneously 7 Perform the measurement Press 4DI...

Page 50: ...mV Im 15 73mA CORR OPEN SHORT CBL 1m Figure 3 25 Ferrite Cored Inductor Measurement Results 8 Disable DC bias output When the measurement is nished turn the DC bias OFF by pressing 4DC BIAS5 to prevent the DUT from overheating The DC bias on o LED indicators of the 4285A and the 42841A will go o simultaneously 3 26 Basic Measurement Examples ...

Page 51: ...at your 4285A is equipped with Option 002 To do this press 4CATALOG SYSTEM5 and NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN SYSTEM CONFIG and check the ACCESSORY I F 002 monitor area When the INSTALLED is displayed in this area your 4285A is equipped with the Option 002 Con gure the Precision Q measurement System The 4285A and the 42851A Precision Q Adapter must be connected with a interface cable a...

Page 52: ...he 4285A measurement conditions by lling in the elds on the MEAS DISPLAY page 4 Set FREQ to 2 52 MHz Other functions are left as the default settings a Move the CURSOR to the FREQ eld The default measurement frequency 1 0000 MHz will be displayed in this eld b Press 425 4 5 455 and 425 2 52 will be displayed on the system message line and the softkey labels change to the available units NNNNNNNNNN...

Page 53: ...message line Wait approximetory 20 seconds until the message SHORT measurement completed will be displayed on the system message line d Press NNNNNNNN ON to set the SHORT correction function to ON 6 Connect the SMD Test Fixture 42851A Option 001 to the HIGH and LOW binding post measurement terminal of the 42851A as shown in Figure 3 28 Note Residual impedance and stray capacitance of the SMD Test ...

Page 54: ...RIGGER5 The 42851A will make a small buzzing sound during the automatic tuning operation and Q and L values of the chip inductor are displayed in large characters as shown in Figure 3 30 If the 42851A doesn t stop the tuning operation try changing the measurement frequency or check to see if the DUT is properly connected to the HIGH and LOW terminals or check the cable connection 3 30 Basic Measur...

Page 55: ...RIGger mode is set to MANual Q MEAS DISPLAY SYS MENU FUNC DIRECT RANGE Q L FREQ 2 5200MHz BIAS 150 mV TUNE AUTO AVG 1 Q 3 6 4 1 L 1 0 1 4 0 0 u H TUNING C 392 9pF V 114 9mV CORRECT SHORT Figure 3 30 Inductor Precise Q Measurement Results Basic Measurement Examples 3 31 ...

Page 56: ......

Page 57: ...ters Such as Control settings on the CORRECTION page OPEN SHORT LOAD correction of ON OFF state OPEN SHORT correction data for all test frequencies OPEN SHORT LOAD correction data from FREQ1 to FREQ7 OPEN and SHORT correction data at speci ed frequencies and LOAD correction reference data and actual data at spci ed frequencies Control settings on the SYSTEM CONFIG page Beeper ON OFF state GPIB add...

Page 58: ...memory card record numbers from 10 to 19 can be set When the 4285A is turned on with the memory card inserted into the MEMORY card slot the 4285A s Auto Load function will load the control settings stored in record number 10 If there are no control settings stored in record number 10 or the stored con guration mode Normal LCR I Bias or Precision Q is di erent from the current con guration mode the...

Page 59: ...is achieved using feedback control loop with the level monitor function as shown in Figure 4 1 Figure 4 1 Feedback Control Circuit The feedback operation performs a level measurement OSC level adjustment 2 to 6 times per measurement The required time depends on the device being tested The more non linear the device is the greater the time required When the ALC function can t regulate the level wit...

Page 60: ...et to OFF and the entered value is set as a normal test signal level On the other hand if the ALC function has been already turned on when the LEVEL setting is out of the ALC s available range the LEVEL setting is automatically changed to be within the ALC s available range Operation Procedure of the ALC Function Perform the following steps to set the automatic level control function ON or OFF 1 P...

Page 61: ...on 002 Accessory control interface 42841A and 42842C are required The LIST SWEEP function can sweep parameters listed above and the measurement results can be compared to speci ed limits These comparison results can be output to the handler interface Structure of LIST SWEEP function The LIST SWEEP function consists of the following two pages LIST SWEEP DISPLAY page under 4DISPLAY FORMAT5 LIST SWEE...

Page 62: ...splayed 3 Press NNNNNNNNNNN OFF to perform the normal LCR measurement 4 Press 4MEAS SETUP5 MEAS SETUP page will be displayed 5 Move the CURSOR to the FUNC eld 6 Press NNNNNNNNNNNNNNNNNNNNNNNNNN more X 6 until it is changed to NNNNNNNNNNNNNNNNNNNNNNNNNN more 5 6 and NNNNNNNNNNNNNNNNNNNNNNNNNNNNN Z deg is displayed Note Any other measurement conditions set on the LIST SWEEP SETUP page are set on the...

Page 63: ...ftkeys will be displayed NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LIMIT DATA A This key is used to set the high low limit for the primary parameter of the measurement function When this softkey is pressed the CURSOR moves to the LOW eld NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LIMIT DATA B This key is used to set the high low limit for the secondary parameter of the measurement function When this soft...

Page 64: ...NNNNNNNNNNN MHz NNNNNNNNNNN OFF 495 NNNNNNNNNNN MHz NNNNNNNNNNN OFF 415 405 NNNNNNNNNNN MHz NNNNNNNNNNN OFF Now the LIST SWEEP setting is complete 14 Press 4DISPLAY FORMAT5 and NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LIST SWEEP to display the measurement results Sweep points and measurement results will be displayed in tabular format and updated continously 4 8 Instrument Feature T utorial ...

Page 65: ...NNNNN PRINT DATA continuously outputs the measurement result status and comparison result if required to the printer NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PRINT DISP NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PRINT DATA capabilities are available in the following pages Table 4 1 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PRINT DISP and NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PRINT DATA Availability Page Name NNNNNNNNNNNNNNNNNNNN...

Page 66: ...ion manual Agilent part number 04285 90000 2 Make sure the printer is plugged in turned on connected to the 4285A and loaded with paper 3 Make sure the printer is set to the listen always state Note Some printers read the switch settings only when they are rst turned on Therefore if you change any of the switch settings you must turn the printer o for several seconds and back on before printing 4 ...

Page 67: ...t by the resonant method with the 42851A refer to 42851A OPERATION MANUAL Agilent Part Number 42851 90010 This manual provides general information speci cations front panel operation GPIB programming information and in depth reference information If you want to perform the high DC current biased measurement by combining with the 42841A and 42842C refer to 42841A OPERATION MANUAL Agilent Part Numbe...

Page 68: ......

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