Microtest 6632 Series User manual

Version
1.321
Firmware Ver
19.1101
Date
2020/01/09
Precision Impedance Analyzer
6632
User Manual

Copyright and Trademark
Do not attempt to reproduce any part of this publication or transmit it by any form or
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without the prior written permission of Microtest Co., Ltd. We shall neither be subjected
to any responsibilities or obligations for the information contained in this Manual nor do
bear damage responsibility resulting from the use of the information contained herein.
All brands and trademark are the properties of Microtest Co., Ltd.
Microtest Co., Ltd. and its affiliates shall not be liable for the damage, losses or costs
incurred due to the accidental use, misuse or abuse by the product buyer or the third
party; or the unauthorized modification, repairs or change of the product; or the failure
in following the operation and maintenance instructions established by Microtest.
The content and the product specifications shall be subject to change without further
notice.
2020 @ Microtest Corporation. All rights reserved.

INDEX
1. Safety Specification ...............................................................................................................2
2. Preface.......................................................................................................................................4
2.1 Introduction......................................................................................................................4
2.2 Key Feature.......................................................................................................................4
2.3 Specification.....................................................................................................................5
3. Description of Installation ....................................................................................................7
3.1 Package & Equipment....................................................................................................7
3.2 Description of function keys on front panel............................................................8
3.3 Description of function keys on back panel............................................................9
3.4 Hardware Installation...................................................................................................10
3.4.1 GPIB Connecting...................................................................................................10
3.4.2 RS232 Connecting.................................................................................................11
3.4.3 Handler Interface...................................................................................................12
3.4.4 Fixture Connecting................................................................................................14
3.4.5 LAN Port...................................................................................................................15
3.4.6 Power Cord Connecting ......................................................................................16
4. Basic Measuring....................................................................................................................17
4.1 Meter Mode .....................................................................................................................17
4.2 FREQ(Frequency)..........................................................................................................17
4.3 LEVEL...............................................................................................................................17
4.4 RANGE AC.....................................................................................................................17
4.5 SPEED..............................................................................................................................17
4.6 BIAS..................................................................................................................................18
4.7 RANGE DC.....................................................................................................................18
4.8 TRIG..................................................................................................................................18
4.9 COMP................................................................................................................................18
4.10 Parameters......................................................................................................................19
4.11 MEASURER MODE SETUP .........................................................................................20
4.11.1 TRIGGER DELAY...................................................................................................20
4.11.2 AC/DC DELAY.........................................................................................................20
4.11.3 AVERAGE................................................................................................................20
4.11.4 DISPLAY Vm/Im......................................................................................................20
4.11.5 BEEP WHEN............................................................................................................21
4.11.6 STATISTICS.............................................................................................................21
4.11.7 FONT SIZE...............................................................................................................21

4.12 TRIGGER MODE............................................................................................................22
4.13 LEVEL/RO/ALC ..............................................................................................................22
4.13.1 RO (Output Impedance).......................................................................................22
4.13.2 ALC (Auto Level Control)....................................................................................23
4.14 SET εr................................................................................................................................24
4.15 Dielectric Coefficient Measurement Method..........................................................24
4.16 SET μr...............................................................................................................................25
4.17 Magnetic Permeability Coefficient Measurement Method..................................25
4.18 COMP (Comparison) ....................................................................................................26
4.18.1 COMPARATOR SETUP ........................................................................................26
4.18.2 COMP (Comparator) MODE & DISP (Display) Mode.....................................27
4.18.3 UPPER......................................................................................................................28
4.18.4 LOWER.....................................................................................................................28
4.19 BIN SETUP......................................................................................................................28
4.19.1 PARAMETER and BIN NUMBER........................................................................28
4.19.2 BIN METHOD...........................................................................................................29
4.20 FILE...................................................................................................................................31
4.20.1 RECAL......................................................................................................................31
4.20.2 NEW...........................................................................................................................31
4.20.3 SAVE AS ..................................................................................................................31
4.20.4 DELETE....................................................................................................................31
4.20.5 USB FILE..................................................................................................................32
4.20.6 COPY>USB..............................................................................................................32
5. LIST TEST ...............................................................................................................................33
5.1 LIST SET..........................................................................................................................33
5.2 LIST MODE SETUP .......................................................................................................34
5.2.1 TRIGGER MODE.....................................................................................................34
5.2.2 TRIGGER DELAY...................................................................................................34
5.2.3 Automatic trigger determination point mode.................................................34
5.2.4 OUTPUT IMPEDANCE ..........................................................................................35
5.2.5 ALC............................................................................................................................35
5.2.6 BEEP WHEN............................................................................................................35
5.2.7 RANGE HOLD.........................................................................................................35
5.2.8 FAIL RETSET..........................................................................................................35
5.2.9 STATISTICS.............................................................................................................36
5.2.10 TERMINATED AT NG STEP.................................................................................36

5.2.11 PRESET....................................................................................................................36
5.3 CORR.(LIST CORRECTION)........................................................................................36
6. SWEEP.....................................................................................................................................37
6.1 SWEEP MODE SETUP .................................................................................................37
6.1.1 SWEEP DELAY.......................................................................................................38
6.1.2 OUTPUT IMPEDANCE ..........................................................................................38
6.1.3 KEEP PREVIOUS TRACE ....................................................................................39
6.1.4 TRACE A/B COLOR...............................................................................................39
6.1.5 PRESET....................................................................................................................39
6.1.6 CURSOR...................................................................................................................40
6.1.7 AUTO FIT .................................................................................................................40
6.1.8 TYPE .........................................................................................................................40
6.1.9 X-AXIS.......................................................................................................................41
6.1.10 START/STOP...........................................................................................................41
6.1.11 LEVEL.......................................................................................................................41
6.1.12 TRIG ..........................................................................................................................41
6.1.13 SPEED ......................................................................................................................42
6.1.14 FUNC.........................................................................................................................42
6.1.15 TRACE A/B PARA..................................................................................................42
6.1.16 TRACE A/B Y-AXIS................................................................................................43
6.1.17 TRACE A/B REF.....................................................................................................43
6.1.18 TRACE A/B POS.....................................................................................................43
6.1.19 TRACE A/B DIV/DECADE ....................................................................................44
6.2 Equivalent Circuit Analysis (option)........................................................................45
7. CORRECTION ........................................................................................................................47
7.1 Open Circuit Correction..............................................................................................48
7.2 Short Circuit Correction..............................................................................................49
7.3 HF LOAD..........................................................................................................................50
7.4 SPOT LOAD....................................................................................................................50
7.5 CABLE LENGTH............................................................................................................50
7.6 FIXTURE COMPENSATION.........................................................................................51
7.7 Spot. No...........................................................................................................................51
7.8 FREQUENNCY ...............................................................................................................51
7.9 LOAD FUNCTION ..........................................................................................................52
7.10 Reference........................................................................................................................52
7.11 Load..................................................................................................................................52

8. SYSTEM CNOFIG..................................................................................................................53
8.1 LANGUAGE.....................................................................................................................53
8.2 GPIB ADDRESS.............................................................................................................53
8.3 RS232 BAUD RATE.......................................................................................................53
8.4 RS232 EOI.......................................................................................................................53
8.5 LAN PORT.......................................................................................................................54
8.6 HANDLERINTERFACE.................................................................................................55
8.7 KEY BEEP .......................................................................................................................55
Appendix.........................................................................................................................................56
|Z| Accuracy Chart ...................................................................................................................56
Measurement accuracy..........................................................................................................57
Concept of Command .................................................................................................................59
Subsystem Command Tree ................................................................................59
Data Format.............................................................................................................60
Common Commands............................................................................................61
MEASure Subsystem............................................................................................65
LIST Subsystem.....................................................................................................73
SWEep Subsystem................................................................................................80
Read the measured value....................................................................................88
Measurement Basics...................................................................................................................89
Resistance (R) and Conductance (G)...............................................................90
Capacitance (C)......................................................................................................91
Inductance (L).........................................................................................................92
Reactance (X) and Susceptance (B).................................................................93
Impedance (Z) and Admittance (Y) ...................................................................94
Quality factor (Q) and Dissipation factor (D) ..............................................95
Phase angle (θ).......................................................................................................96
Overall Impedance Measurement Theory.......................................................97
Characteristics Example....................................................................................100
High and low impedance criteria.....................................................................101

2
1. Safety Specification
This instrument is designed according to EN61010-1 Specification. The main
purpose of this Specification is to ensure that the instrument will be used in the
laboratory or the factory safely; it is not suitable for outdoor applications,
especially the moistened or dusty locations. Abnormal use of this instrument may
cause the electrocution hazard. Before using this instrument, please read the
descriptions of this Specification carefully to avoid causing accident due to
incorrect or unintended use.
1.1 Safety marks (the following safety marks may appear in this Manual)
Caution :
Please read the content of this Manual carefully.
High-voltage
hazard symbol：
The output terminal may release lethal voltage. Please
read the safety instructions described in this chapter.
Grounding：
Before working with this tester, be sure to connect this
terminal with the ground to prevent from touching the
housing as to cause electrocution accident due to
current leakage.
Warning sign：
If the product is improperly used, it may cause adverse
result to the instrument or the Test Piece. If the product
is improperly used, it may cause injury or even death.
1.2 Electrocution
To prevent electrocution accident from occurring, it is suggested that the
operator wear insulating rubber globes before working with the machine and
then start the test-related activities.
1.3 Grounding
The back panel of the instrument is fitted with a safe ground terminal. Be sure to
connect this ground terminal to the ground to prevent the operator from touching
the housing as to cause the electrocution.
1.4 Power Source
The scope of power used by this instrument is 88~264Vac. To insert the power
source, please check if the power to be connected is identical with the power-
shifting sign indicated on the back panel. When changing the fuse, it is required
to use specific type of fuse designed in same ampere to prevent the electrical
wire from burning. Before making any replacement, please remove the plug to
prevent danger.

3
1.5 Warm-up
The instrument will operate normally upon starting the power. To achieve the
specified accuracy, it is suggested warming up the instrument for over 15
minutes
1.6 External control unit
This unit is able to execute the external control. For this purpose, please ensure
that the operator is not touching the signal output end and the Test Piece to
avoid causing hazard.
1.7 Machine failure
Stop using the instrument immediately when finding it is operating abnormally,
such as significant difference is existed between the current displayed on the
current meter and the design value; or the current is not supplied, but the
overlapping current indicator remains illuminated continuously. In this case,
please contact us or your dealer to provide technical support.
1.8 Ending the test
When not using the instrument, please shut off the Power Switch. To restart the
Power Switch after being disconnected, please wait for few seconds; however,
do not execute consecutive on/off action of the power.
1.9 Installation, storage
Normal operating temperature and humidity scope of the instrument is
5oC~40oC and 80% RH respectively, and the instrument may act abnormally if
exceeding such range. The storage temperature and humidity scope of the
instrument is -20oC~ 70oC and 80% RH respectively. To achieve correct testing
and to protect safety, do not install the instrument in the environment exposing
to direct sunshine or high temperature, high humidity, frequency oscillation and
rich dust.
1.10 Emergency treatment
Upon the occurrence of electrocution, burning of the Test Piece or the burning of
Main Unit, please disconnect the Power Switch and remove the power cord plug
immediately to avoid causing a hazard.
1.11 General instructions
Do not place any combustible or heavy object on the instrument.
Avoid heavy impact that may damage the machine.
When cleaning the instrument, remove the power plug first and then
wipe with the soft cloth soaked with mild cleanser and fresh water.
If the instrument presents any Tolerance sign, do not attempt to
dismantle it for making repairs; instead, send the instrument to our
professional maintenance personnel for solving the problem.

4
2. Preface
In this chapter, we briefly introduce the characters, key features and specifications
of 6632 Precision Impedance Analyzer.
2.
2.1 Introduction
The test frequency of the 6632 Precision Impedance Analyzer is DC 10Hz-
30MHz and the test signal is 10mV-2Vrms (min. resolution 1mV), and is suitable
for the LCR and DCR testes of AC signals. The measurement in a continuously
changing environment can be executed stage-by-stage with the test frequency
and grade, and high-speed continuous tests can be performed under different
test and mode conditions. The machine also supports LAN, USB and GPIB PC
connection capabilities to improve the design and test efficiency significantly.
MICROTEST 6632 Impedance Analyzer also provides fixtures for material
dielectric permittivity measurement that allows PCB designed engineers to
reduce the faulty conditions with the comprehensive information of permittivity
while designing PCB layouts.
The performance, convenience and operation flexibility of the Precision
Impedance Analyzer have become indispensable tools for the professional
measuring technicians. In addition to providing full-range solutions for the testing
equipment over the past years, Microtest also developed the new model of
“6632 Precision Impedance Analyzer” that has contributed to more perfect
precision solutions for the test. Such analyzer can meet customer demands for
price, speed, capacity, accuracy and multi-function by its well-based flexibility in
combination and implementation. Therefore, it can be used in the testing of a
variety of components such as resister, capacitor, inductor, oscillator, sensor,
time-delay wire, filter and resonator.
2.2 Key Feature
Signal source frequency range: DC, 10Hz ~ 3/5/10/20/30MHz
Signal source grade: 10mV ~ 2V / 200μA ~ 20mA
Basic accuracy up to ±0.08% (Typical value ±0.05%)
ALC function
Output resistance 25Ω/100Ω, switchable
Wide resistance measurement range from 25 mΩ to 40
MΩ (measurement accuracy up to 10%)
Parameters: |Z|, |Y|, θ, R, X, G, B, L, C, D, Q, DCR, ESR, Vac, Iac, Vdc, Idc, etc.
Ultra-high measuring speed
Open circuit/short circuit/load calibration function
Electric meter mode, multistep list mode, scan & analyze mode
Up to four component parameters can be selected in the electric meter mode.
The induction and DCR values can be measured and displayed simultaneously
Auto component classification: Comparator function and Handler BIN
classification function
Up to 32 sets of multistep list programs can be stored in the permanent memory
and up to 16 test steps can be arranged in each program
Rapid automation and data access function is realizable for USB, LAN, GPIB
and RS232 interfaces
PC connection data analysis software is available optionally
7" 800*480 TFT LCD color screen

5
Ultra-light design: 344x145x343mm, 3kg
Ultra-low power consumption (<30W) without fans and zero noise
2.3 Specification
6632 Precision Impedance Analyzer
儀
Models
Frequency range
Meter mode
List mode
Sweep mode
Equivalent circuit analysis
6632-30S
10Hz~ 30MHz
√
√
√
√
6632-20S
10Hz ~ 20MHz
√
√
√
√
6632-10S
10Hz~ 10MHz
√
√
√
√
6632-5S
10Hz~ 5MHz
√
√
√
√
6632-3S
10Hz~ 3MHz
√
√
√
√
6632-30
10Hz~ 30MHz
√
√
√
6632-20
10Hz ~ 20MHz
√
√
√
6632-10
10Hz~ 10MHz
√
√
√
6632-5
10Hz~ 5MHz
√
√
√
6632-3
10Hz~ 3MHz
√
√
√
Resolution
100mHz, 6-bit Frequency Input
Accuracy
7 ppm±100mHz
Basic Accuracy
±0.08%
(Typical value ±0.05%)
Display Range
DCR
0.00mΩto99.9999MΩ
lZl
0.000mΩto9999.99MΩ
R,X
±0.000mΩto9999.99MΩ
lYl
0.00000μSto999.999kS
G, B
±0.00000μSto999.999kS
Cs, Cp
±0.00000pFto9999.99F
Ls, Lp
±0.00nHto9999.99kH
Q
0.00to9999.99
D
0.00000to9999.99
θ
DEG
±0.000°to180.000°
θ
RAD
±0.00000 to 3.14159
Δ%
±0.000%to999.999%

6
Range
10mV~2Vrms
Resolution
1mV
Voltage Signal Level
Accuracy
4-Terminal test fixture
± [(10 + 0.05 × f )% + 1 mV]
*f : frequency [MHz]
Cable length > 0m
± [(15 + 0.1 × f )% + 1 mV]
Range
200µA~ 20mArms
Resolution
10µA
Accuracy
4-Terminal test fixture
Current Signal Level
at ≦ 15MHz
+[10% + 50 μA], –[(10 + 0.2 × f 2 )% + 50 μA]
at ＞ 15MHz
± [(10 + 0.3 × f )% + 50 μA]
Cable length > 0m
at ≦ 5MHz
+[10% + 50 μA], –[(15 + 1.5 × f 2 )% + 50 μA]
*f : frequency [MHz]
at ＞ 15MHz
± [(20 + 0.3 × f )% + 50 μA]
Measurement Time
<3ms(The fastest)
Output Resistance
25Ω/100Ω, switchable
Parameter
|Z| 、 |Y| 、 θ 、 X 、 R 、 G 、 B 、 L 、 D 、 Q 、 DCR 、 C 、 Vdc-Idc 、 ESR 、
ε 、 µ
Calibration
Open Circuit/ Short Circuit/Load Calibration
Measurement Circuit
Series/Parallel
Multi-steps Mode
50 setup groups (with each group containing 15 measuring steps)
PCLINK
CPK
Equivalent Circuit
Analysis
Option
Flash Memory
100 LCR-measure Mode setup documents& 50 Multi-steps Mode setup
documents
USB Memory
LCR-measure Mode setup document 、 Multi-steps Mode setup document 、
BMP graphics 、
Test result data 、 Sweep Mode BMP graphics& result data
Interface
I/O Interface
Handler
USB 、 RS232
Parallel interface
Serial interface
GPIB
Display
7.0”TFT, 800*480color screen
Environment
10°C~40°C,≤80%RH
Power Supply
Voltage
90~264Vac
Frequency
47~63Hz
Power Consumption
Low power consumption: Maximum 30W (Nominal value)
Dimension(W*H*D)
336x147x340mm
Weight
3kg

7
3. Description of Installation
Thank you for using Microtest 6632 Precision Impedance Analyzer as your
testing instrument. This Manual contains the detailed installation steps. To ensure
personnel safety and to protect your equipment and data, please check if the
following accessories are fully supplied before starting the installation.
3.1 Package & Equipment
Standard:
If you are missing the following standard accessories, please contact your
purchase manufacturer before installation.
6632 Precision Impedance Analyzer x 1
User’s Guide CD x 1
Power cord & Power line adapter x 1
FX-000C19 High frequency DIP fixture x1
Optional:
F423906A (Kelvin Clip Leads with BNC Box)
F663001A/B/C (BNC Test Leads)
FX-000C6 (High frequency DIP fixture)
FX-0000C7 (Dielectric Material Test Fixture)
FX-0000C8 (Magnetic Material Test Fixture)
FX-0000C9 (Material Test Fixture)
FX-000C10 Bottom (Bottom Electrode SMD Test
Fixture)
FX-000C11 Bottom SMD Tweezers Test Leads
FX-000C12 Bottom SMD Test Fixture
FX-000C20 (Liquid Dielectric Material Test Fixture)

8
3.2 Description of function keys on front panel
*Rear view (millimeters)
Push Key and Port
Function
1. Enter
Enter key
2. Exit
Exit key
3. Number key
Input value
4. Menu
For selecting Meter, Multi-step, Trace, Trim and
System modes, etc.
5. Local
GPIB computer remote control wire. Such key will be
locked to prevent from controlling the push key and
the computer by both sides. To use the keypad again,
press this key again.
6. Bias
For connecting the Bias unit and for executing on/off.
7. Trigger
For starting the test. When the instrument is under
single-mode testing status, press “Trigger” to obtain
the result of such test and the instrument will stop the
testing action, waiting for next starting or other function
change.
8. Direction
For selecting menu items. The “Up/Down/Left/Right”
key set and control the cursor movement on the
screen.
9. Function
For executing the function indicated for the position
corresponding to the Function key.
10.LCUR (BNC)
BNC terminal
11.LPOT (BNC)
12.H POT (BNC)
13.H CUR (BNC)
14.Ground Terminal
Grounding
15.LCD
Display
16.USB
For accessing data and image.
17.Power
Power Switch

9
3.3 Description of function keys on back panel
*Rear view (millimeters)
PORT
FUNCTION
1. Handler
Pass/Fail signal (see3.4.3 Hander Interface)
2. RS232
For connecting to software port(see3.4.2 RS232
Connecting)
3. GPIB
Remote control port: 24-pin block (see3.4.1 GPIB
Connecting)
4. EXT. I/O
For expanding Bias Input/Output port
5. Trigger
Pedal Switch port
6. USB
For software copying and upgrading
7. LAN
Network port
8. Power jack
Fuseblock
AC power for 90~264V / 47~63Hz
The fuse block contains input power fuse T3A/250V
1 2 3
7
4
65
8

10
3.4 Hardware Installation
3.4.1 GPIB Connecting
The computer and the measuring instrument are connected with GPIB
(General-Purpose Interface Bus) cable, and the Test Piece will be tested
or trimmed on the computer through GPIB.
Definition of GPIB Pin
Pin
Definition
Pin
Definition
1
Dataline1
13
Dataline5
2
Dataline2
14
Dataline6
3
Dataline3
15
Dataline7
4
Dataline4
16
Dataline8
5
EOI
17
REN
6
DAV
18
Ground
7
NRFD
19
Ground
8
NDAC
20
Ground
9
IFC
21
Ground
10
SRQ
22
Ground
11
ATN
23
Ground
12
Shield
24
Signalground
Restrictions of GPIB:
1. At most, 15 units of equipment can be connected at the same
time. The total length of connecting cable will be 20m, and the
connecting cable between each equipment is 2m long.
2. Each piece of equipment will be allocated with a specific position.
3. Min. 2/3 of equipment will be operating.
4. The equipment will be connected by non-loop or parallel
method.

11
3.4.2 RS232 Connecting
The computer and the measuring instrument are connected through
RS232, and the Test Piece will be tested or trimmed on the computer
through RS232.
Definition of RS232Pin
Pin
Definition
Pin
Definition
1
Non-connection
6
Non-connection
2
RXD (receiving data)
7
Non-connection
3
TXD (transmitting data)
8
Non-connection
4
Non-connection
9
Non-connection
5
GND

12
3.4.3 Handler Interface
You may control the test function of your machine with an external signal
through the Handler Interface and Handler I/O port in its back panel.
Please set the Handler Interface ON in SYSTEM menu to enable remote
control and set the dip switch to on (both switches are pull down).
Pins in Handler I/O port：

13
Handler I/O timing diagram：
NOTE:
1. PIN1(trigger) + PIN5(gnd) Start testing after short circuit,
the shorting time must be greater than 100uS.
2. The other output pins are photo coupler circuit, output
signal is low level.The output is as a high resistance
floating circuit when it without action.
3. /EOM and /INDEX will be clean after the /TRIGGER
executed.

14
3.4.4 Fixture Connecting
When connecting the fixture, it is required to discharge the power of Test
Piece thoroughly. Turn the latches on both sides of the fixture to left until
aligning with the small protruding point on the BNC port. Push the fixture
down to the end and then rotate the latch rightward for fixing the fixture.
Next, execute O/C and S/C trimming (See 7. Correction) and load the
measured Test Piece in-between both locking plates on the fixture. Then
fasten the screws to secure the Test Piece and the measuring process
can be started.
Turn the knob to the right
Insert the fixture FX-00C19
Press the open
correction
Measure the DUT
Press the short
correction

15
3.4.5 LAN Port
The instrument will be connected to the LAN (Local Area Network) ports.
Can be selected as Auto or Manual Manual requires entering of network
settings and IP configuration
MAC ADDRESS: Sets the MAC address
LAN STATUS: Displays the current network connection status
PORT: Fixed as 111
CURRENT IP ADDRESS: The IP address of the instrument.
CURRENT SUBNET MASK: Sets the network subnet mask.
CURRENT GETAWAY: Sets the gateway
CURRENT DNS SERVER: Sets the DNS.