Chroma 3300 User manual

Automatic Transformer Test System
3300/3302
User’s Manual
Edition
September 2002
P/N A11 000320

ii
Legal Notices
The information in this document is subject to change without notice.
Chroma ATE INC. makes no warranty of any kind with regard to this manual, including, but
not limited to, the implied warranties of merchantability and fitness for a particular purpose.
Chroma ATE INC. shall not be held liable for errors contained herein or direct, indirect,
special, incidental or consequential damages in connection with the furnishing, performance,
or use of this material.
CHROMA ATE INC. 43Wu-Chuan Road, Wu-Ku Industrial Park, Wu-Ku, Taipei, Taiwan
Copyright Notices. Copyright 2002 Chroma ATE INC., all rights reserved. Reproduction,
adaptation, or translation of this document without prior written permission is prohibited,
except as allowed under the copyrightlaws.

iii
Warranty
All Chroma instruments are warranted against defects in material and workmanship for a
period of one year after date of shipment. Chroma agrees to repair or replace any assembly
or component found to be defective, under normal use during this period. Chroma's
obligation under this warranty is limited solely to repairing any such instrument, which in
Chroma's sole opinion proves to be defective within the scope of the warranty when returned
to the factory or to an authorized service center. Transportation to the factory or service
center is to be prepaid by purchaser. Shipment should not be made without prior authorization
by Chroma.
This warranty does not apply to any products repaired or altered by persons not authorized by
Chroma, or not in accordance with instructions furnished by Chroma. If the instrument is
defective as a result of misuse, improper repair, or abnormal conditions or operations, repairs
will be billed at cost.
Chroma assumes no responsibility for its product being used in a hazardous or dangerous
manner either alone or in conjunction with other equipment. High voltage used in some
instruments may be dangerous if misused. Special disclaimers apply to these instruments.
Chroma assumes no liability for secondary charges or consequential damages and in any
event, Chroma's liability for breach of warranty under any contract or otherwise, shall not
exceed the purchase price of the specific instrument shipped and against which a claim is
made.
Any recommendations made by Chroma for use of its products are based upon tests believed
to be reliable, but Chroma makes no warranty of the results to be obtained. This warranty is
in lieu of allother warranties, expressed or implied, and no representative or person is
authorized to represent or assume for Chroma any liability in connection with the sale of our
products other than set forth herein.
CHROMA ATE INC.
43 Wu-Chuan Road, Wu-Ku Industrial Park,
Wu-Ku, Taipei Hsien, Taiwan
Tel: [phone]
Fax: [phone]
http://www.chromaate.com

Automatic Transformer Test System 3300/3302 User’s Manual
v
Table of Contents
1. Introduction...................................................................................................................1-1
1.1 General................................................................................................................1-1
1.2 Brief Specifications..............................................................................................1-2
1.3 Incoming Inspection.............................................................................................1-3
2. Specifications (15 ℃〜 35 ℃ RH ≦ 75%).......................................................................2-1
2.1 Measurement Functions.......................................................................................2-1
2.2 Test Signals..........................................................................................................2-2
2.3 Measurement Range.............................................................................................2-2
2.4 Measurement Accuracy........................................................................................2-3
2.5 Accuracy..............................................................................................................2-3
2.6 Correction Functions............................................................................................2-5
2.7 List Sweep (3302 only)........................................................................................2-6
2.8 Comparator Function (3302 only) ........................................................................2-6
2.9 Interfaces.............................................................................................................2-6
2.10 Others..................................................................................................................2-6
3. Installation ..................................................................................................................3-1
3.1 Ambient Environment..........................................................................................3-1
3.2 Power-Line Connection ...................................................................................3-1
3.3 Fuse.....................................................................................................................3-2
3.4 Power Regulation .............................................................................................3-2
3.5 Connecting Unknown.......................................................................................3-2
3.6 The Contrast of LCD Display .........................................................................3-2
4. Panel Description...........................................................................................................4-1
4.1 Front Panel Description .......................................................................................4-1
4.2 Rear Panel Description.........................................................................................4-4
4.3 System Parameters Setting Description................................................................4-6
4.3.1 System Configuration...................................................................................4-6
4.3.2 System Time Setting Description................................................................4-11
4.3.3 Recall The Data From The Memory...........................................................4-12
4.3.4 Store The Data Into Memory......................................................................4-12
4.3.5 Memory Management Instruction...............................................................4-13
4.3.6 User Password Setting................................................................................4-13
4.3.7 Scan Test Box (Box Test)...........................................................................4-14
4.3.8 Memory Card Management Function.........................................................4-14
4.3.9 Print Testing...............................................................................................4-15
4.3.10 RS-232 Setup.............................................................................................4-15
4.4 Operation Instruction.........................................................................................4-16
4.4.1 Open Test...................................................................................................4-16
4.4.2 Short Test...................................................................................................4-18
4.4.3 Single Transformer Test .............................................................................4-20
4.4.4 Test Fixture (Scan Box) Operation .............................................................4-24
4.4.5 Test Procedure Description.........................................................................4-34
4.4.6 Different Frequency Setting In The Different Windings:.............................4-34
4.4.7 ACR Setting Description............................................................................4-35
4.4.8 Zx. Setting Description...............................................................................4-36

vi
4.4.9 Pins Parallel Test Description.....................................................................4-37
4.4.10 Pins Series Test Description .......................................................................4-37
4.4.11 How To Set Up 〝 DEVIATION 〞 Function ................................................4-38
4.4.12 LCRZ Parameter Analysis. (3302 only)......................................................4-39
4.4.13 Compare Test (3302 only) ..........................................................................4-40
4.4.14 BIN SET (3302 only).................................................................................4-40
4.4.15 Multi-frequency Scan Test (LIST SWEEP) (3302 only).............................4-41
4.4.16 Upload Calibration Explanation (3302 only) ..............................................4-44
4.4.17 33XX Fast Function Keys (Help Function).................................................4-45
4.4.18 33XX DCA New Additional Function & Operation (Option) .....................4-45
4.5 Low Impedance Measurement Application ........................................................4-46
4.6 Bias Current Source Connecting ........................................................................4-47
4.7 Test Application.................................................................................................4-47
4.7.1 Large Inductance Measurement..................................................................4-47
4.7.2 Low Coupling Coefficient Turn Ratio Measurement...................................4-47
4.7.3 Bias Current Connecting ............................................................................4-47
4.7.4 Nonlinear Inductor,Transformer Measurement ..........................................4-47
5. Application of Interface ................................................................................................5-1
5.1 Transformer Automatic Scan Interface (Scan Box)...............................................5-1
5.1.1 Description The Test Function......................................................................5-1
5.1.2 Notice before Using .....................................................................................5-1
5.1.3 Scan Box Front Panel Description................................................................5-2
5.1.4 Scan Box Rear Panel Description.................................................................5-4
5.1.5 Scan box Description ...................................................................................5-5
5.1.6 Test Fixture (Scan Box) Description.............................................................5-6
6. PRINT(OPTION) Operational Procedure...............................................................6-1
7. Handler Interface (Option)...........................................................................................7-1
7.1 General................................................................................................................7-1
7.2 Timing .................................................................................................................7-2
8. RS-232C Control Interface ...........................................................................................8-1
8.1 Overview.............................................................................................................8-1
8.2 RS-232C Specification.........................................................................................8-1
8.2.1 RS-232C Interface Connector.......................................................................8-1
8.2.2 Table of RS-232C Signal Line and Pin .........................................................8-1
8.3 Setting 33XX RS-232C Interface.........................................................................8-1
8.3.1 Setting BAUD RATE ...................................................................................8-2
8.3.2 Setting PARITY CHECK.............................................................................8-2
8.3.3 Setting WORD LENGTH.............................................................................8-2
8.3.4 Setting of DEFAULT....................................................................................8-2
8.3.5 RS-232 ON/OFF..........................................................................................8-2
8.4 Setting 33XX RS-232C Interface.........................................................................8-2
8.5 Data Output Format for 33XX .............................................................................8-5
8.5.1 Transformer Output Format..........................................................................8-5
8.5.2 Data Output Format for LCR (3302 only).....................................................8-6
8.5.2.1 LCR Pure Value Output Format................................................................8-6
8.5.2.2 BIAS SCAN Output Format.....................................................................8-7
8.6 Example Programs of RS-232C Interface Control................................................8-8
9. Additional Description of Memory Card......................................................................9-1

Introduction
1-1
1. Introduction
1.1 General
The 33XX AutomaticTransformerTest System is an automatic instrument which used for
testing and analyzing components. The main goal of design this unit is to solve the
problems of low labor efficiency and product quality which have occurred since the electronic
career flourishing. The model 33xx is to enhance the working efficiency and products
quality based on decade’s experience and efforts 33XX series including 3300, 3302. 3300
are transformer scan testing, 3302 is for transformer scan and single component test, for
convientert, we call 33XX series.
The testing functions including in this unit are: L, C, R, Z, DCR, PH, Turn-ratio, Lk, Ps and
BALANCE which supplied the perfect functions to the production line and Quality Control.
By using the internal microprocessor, the unit may supply fast, high accuracy and reliable
testing under low cost. The functions are following: Hi or Lo-limit comparator, testing
frequency, selector of testing voltage, upload calibration, multi-frequency scan testing, data
saved and recall and single unit scan testing. Also, the unit may be full function scan testing
by combining with scan box.
Memory card is using for recalling and saving data. The RS-232 interface is using for data
transfer and statistic analysis. The printer interface is to print out the testing result. The
unit may send the testing result to external for responding the componentby Handler
interface.
It also has provided a BIAS Current (I ≦ 1A) generator, can be cooperated with BIAS
Current generator to measure coils inductance value.
The multi-function testing device, humanization key board design, guidable panel operation,
extra large LCD, Locked key and password protection are making the 33XX unit easy to be
operate and ensure the high accuracy.
The accuracy is 0.1%. The measurement device (optional) may performing the calibration
by key-in the measuring parameter. The calibration procedure can finish easily by offering
OPEN and SHORT.
If the unit require the external or expend testing, please be aware the 4 connection points
should be correct. and in high frequency measuring need to consider of the high frequency
response.

Automatic Transformer Test System 3300/3302 User’s Manual
1-2
1.2 Brief Specifications
 Measurement Parameter:
First test parameters -- L, C, R, ｜ Z ｜ , △ , △ %, DCR, Turn-Ratio
Secondtest parameters-- Q, D, R, θ
 Basic Accuracy : Basic 0.1% （ 1kHz/1V rms ）
 Measurement Range : L – .0001uH 〜 9999.9H
C – .001pF 〜 999.99mF
R – .0001 Ω 〜 999.99M Ω
｜ Z ｜ – .0001 Ω 〜 999.99M Ω
Q – .0001 〜 99999
D – .0001 〜 99999
θ – ﹣ 90.00° 〜 ＋ 90.00°
DCR – .01m Ω 〜 99.999K Ω
Np – .01 〜 999.9Turn
Ns – .01 〜 999.9Turn （＋ , — ）
 Measurement Frequency : 20Hz to 1MHz
 Measurement Voltage : 10mV to 2Vrms, each step 10mV
 Equivalent Circuit : Series, Parallel
 Zeroing Calibration : Open, Short
 Turn-Ratio : 1kHz to 1MHz, 0.1V to 10Vrms
 Notice :
The maximum input voltage of this instrument is 10 Vpesk. Be sure.
that the secondary voltage is below 10Vpeak.
 Scan Test : Harmonize with scan control can test 20 points of
transformer scan test.
 Interfaces : Memory Card, Scanner Interface. RS-232 interface,
Printer interface, Handler interface.
DCA control interface (Option)

Introduction
1-3
Table 1-1 33XX Interface equipment
RS-232 Printer Handler Memory Card
Scanner DCA Bias
3300
     Option
3302
     Option
1.3 Incoming Inspection
Upon receipt of this instrument, please check the following items:
(1) Any damages or scratches on the surface of the product.
(2) Listed of Table 1-2 and 1-3 are accessories for this instrument.
If you have found any damages or accessories less, please contact our company,
branches, or agents for prompt service.
Table 1-2 Standard Accessories
Item Part No. Quantity Remark
Power Cord W12 010130 1 Power Cable
Adaptor N31 000039 1 for change power plug 3P to 2P
Test Cable (4-Terminal) 9 13300299 1 for clip of DUT
Test Cable (2-Terminal) W38 001630 1 for clip of Turn-Ratio
Power fuse slow 2A A21 018700 2 AC 115V used
Power fuse slow 1A A21 016600 2 AC 220V used
Operation Manual A11 000320 1 English
Ground lead W38 001660 1 80cm length

Automatic Transformer Test System 3300/3302 User’s Manual
1-4
Table 1-3 Optional Accessories
Item Part No. Quantity Remark
Test box (1) 9 11000199 1 Test box
Test box (3) 9 11000399 1 Test box
SMD Test cable 9 13300399 1 SMD Test cable
SMD Test box 9 13300499 1 SMD Test box
RS232 link cable W38 000420 1 RS232 link cable
BIAS current device 9 13300699 1set Current Max. to 1A
Expanded memory interface 9 11080199 1set Expanded memory storage
function
Memory card A92 000001 1 2M SRAM CARD
Scan Box 3001A 9 13250199 1 20 pin scan box
Test Cable (4-Terminal) 9 13300599 1 In use at ESR < 10m
Ω
BIAS current expanded
interface 8 13301200 1 Capable control Zentech1320 20A current
Note: To get the missing or purchasing accessories, just name Part No. to us.

Specifications
2-1
2. Specifications (15 ℃〜 35 ℃ RH ≦ 75%)
2.1 Measurement Functions
 Measurement Parameters:
｜ Z ｜ : Absolute value of impedance
｜ Y ｜ : Absolute value of admittance
L : Inductance
C : Capacitance
R : Resistance
D : Dissipation factor
Q : Quality factor
Rs : Equivalent series resistance
Rp : Parallel resistance
X : Reactance
θ : Phase angle
△ :DeviationofL/C/R/ ｜ Z ｜
△ % : Deviation percentage of L/C/R/ ｜ Z ｜
DCR : DC Resistance
Np/Ns : Turn-Ratio
Vp/Vs : Volt-Ratio
Ns :Turn
Vs :Voltage
 Combinations:
｜ Z ｜ , ｜ Y ｜ L, C R
θ (deg)/ θ (rad) D, Q, Rs, Rp, Q, X,
 Deviation Function:
The deviation and the Percent of Deviation of measurement values from a
programmable reference value.
 Equivalent Measurement Circuit: Parallel and Series
 Ranging: Auto and Manual (Hold/Up/Down)
 Trigger mode: Internal, Manual and External (RS-232, Handler Interface).

Automatic Transformer Test System 3300/3302 User’s Manual
2-2
 Measurement terminals: Four-terminal pair for L, C, R, ｜ Z ｜ , DCR.
Six-terminal pair for Turn-Ratio.
 Integration Time: Fast, Middle and Slow.
2.2 Test Signals
 Frequency:
3300,3302 : 20 〜 1MHz
Accuracy : ± (0.01% ± 0.01Hz)
 Signal Level:
Range Setting Accuracy
Voltage 10mVrms to 2 Vrms
± (10% ＋ 1mVrms)
 Output Impedance: 100 Ω , ± 3% （ CONST Rsou.: 320X ）
 Test Signal Level Monitor:
Mode Range Accuracy
Voltage110mVrms to 2 Vrms
±（ 3% of reading ＋ 0.5mVrms ）
1: Add the impedance measurement accuracy (%) to the voltage level monitor
accuracy when the DUT’s impedance is < 100 Ω .
2.3 Measurement Range
Parameter Range
｜ Z ｜ , R, X
0.1 mΩ to 999.999 MΩ
｜ Y ｜ 0.1 nS to 99.9999 S
C 0.001 pF to 999.99 mF
L 0.1 nH to 9.9999 kH
D 0.0001 to 99999
Q 0.0001 to 99999
θ -90.00 ° to 90.00 °
△ % -100.00% to 100.00 %
DCR 0.01 mΩ to 99.999 kΩ
Np/Ns 100 : 1
Vs 10V max

Specifications
2-3
2.4 Measurement Accuracy
Measurement accuracy is specified when all of the following conditions are
satisfied:
(1) Warm-up time: ≧ 30 minutes
(2) OPEN and SHORT corrections have been performed.
2.5 Accuracy
 Within 1 year after factor calibration.
 Temperature : 23 ℃± 5 ℃
 Relative humidity : 80% maximum
 Warm up : 30 minutes minimum.
 Zero calibrated under conditions above.
1. •｜ z ｜ - θ Accuracy
The basic accuracy is listed in table 2-1
 For Fast rate, on all range, the accuracy must be doubled.
2. L, C, R Accuracy
For Q ≧ 10 (D ≦ 0.1), correspond to accuracy of ｜ Z ｜ , where
｜ ZL ｜ = ｜ 2 π fL ｜
｜ ZC ｜ = ｜ 1/(2 π fC) ｜
Refer to conversion chart between LC and ｜ Z ｜ in Figure 2-1.
If Q <10(D > 0.1), multiply L accuracy by (1 ＋ 1/Q) and multiply C accuracy by (1 ＋ D).
3. D, Q, R Accuracy
For all D value
Accuracy of D = ± [ tan θe．(1+D
2)]/[1-D．
ta nθe]
For Q ≧ 10
Accuracy of Q = ± [tan θe．(1+Q2)]/[1-Q． tan θe ]
If Q < 10, multiply accuracy Q by (1 ＋ 1/Q)
< where θ e is accuracy error of phase angle θ >

Automatic Transformer Test System 3300/3302 User’s Manual
2-4
4. R (ESR, EPR) Accuracy
For Q ≦ 0.1
Accuracy of R = Accuracy of ｜ Z ｜
If Q ≧ 0.1, multiply accuracy by (1+Q)
5. DCR Accuracy : ± (0.5% + 0.2m Ω ) > 10m Ω
± (1% + 0.2m Ω ) < 10m Ω
6.Turn-Ratio Accuracy : ± (0.5% + 0.2T)

Specifications
2-5
2.6 Correction Functions
Zero open:
Eliminates measurement errors due to parasitic stray impedances of the test fixture.
Zero short:
Eliminates measurement errors due to parasitic residual impedances of the test
fixture.
Load:
Improves the measurement accuracy by using a working standard (calibrated device)
as a reference.

Automatic Transformer Test System 3300/3302 User’s Manual
2-6
2.7 List Sweep (3302 only)
A maximum of 9 frequencies or test signal levels can be programmed. Single or
sequential test can be performed.
2.8 Comparator Function (3302 only)
Ten bin sorting for the primary measurement parameter, and IN/OUT decision
output for the secondary measurement parameter.
Sorting Modes:
Sequential mode: Sorting into unnested bins with absolute upper and lower limits.
Tolerance mode: Sorting into nested bins with absolute or percent limits.
Bin Count:
0 to 999999
List Sweep Comparator:
HIGH/PASS/LOW decision output for each point in the list sweep table.
2.9 Interfaces
Printer Interface : Standard Printer Interface.
RS-232 Interface : Standard RS-232 Interface.
Handler Interface: PASS/FAIL/Ext Trig.
2.10 Others
 Display : 320x240 Graphic LCD Display.
 Power: 100V 〜 120V AC, 50Hz/60Hz. Power consumption is 140VA, maximum.
220V 〜 240V AC, 50Hz/60Hz. Power consumption is 140VA, maximum.
 Environment : Operating -- 0 ℃ to 40 ℃ , 10 to 85% relative humidity.
Storage -- -10 ℃ to 50 ℃ , 10 to 90% relative humidity.
 Dimensions : 430(W) x 177(H) x 300(D)
 Weight : 8.5Kg.

Installation
3-1
3. Installation
3.1 Ambient Environment
(1).Don’t use the meter in a dusty or vibrating
location. Don’t expose it under sunlight,
or corrosive gas. Be sure that the ambient
temperature is 0 〜 40 ℃ and that the relative
humidity is below 85%.
(2).The meter is equipped in the back panel with
a fan-out cooling fan to keep from internal
temperature increase. Make sure of good
ventilation. The meter should be located at over
10cm distance from any object or wall in the
behind. Don’t block the left and right ventilation
holes to keep the meter in good precision.
(3).The meter has been carefully designed to
reduce the noise from the AC power source.
However, it should be used in anise environment
as low as possible. If the noise is inevitable,
please install some power filter.
(4).The meter should be stored within the
temperature range -25 ℃〜 +70 ℃ . In case it is
not to be in use for a long time, please store it
in the original or similar package, and keep it
from direct sunlight and humidity, to ensure a
good condition for later use.
3.2 Power-Line Connection
Before plug in power cord, make sure power is off state, and the voltage in rear
panel is meet required voltage. The power supply frequency please use the 50 Hz
or 60Hz.

Automatic Transformer Test System 3300/3302 User’s Manual
3-2
3.3 Fuse
It has one fuse installed in rear panel, replace the fuse and please watch for.
(1) Please turn off power and pull off power cord.
(2) Fuse spec. AC 100V 〜 120V → T2A 250V
AC 220V 〜 240V → T1A 250V
For the reason of safety and noise, it must use the power card with figure 3-1:
3.4 Power Regulation
As this instrument is belong to precision electronically test device, so the accuracy is passable
to be influenced lower by input power unstable after testing. There is ±10% changeable
power even in the laboratory, so we suggest that use the regulator in power and test devices
the only one way to avoid the reasons that cause by power unstable.
3.5 Connecting Unknown
For connecting 33XX LCZ to D.U.T (Unknown device) can through the BNC connector that
marks HCUR, HPOT, LPOT, LCUR. (If want to measure the PH and Turn Ratio of transformer
must use the terminator of Sec(+) and Sec(-), so usually need external test device. Notice
the LCUR and LPOT connect to DUT should be at the same terminal, HCUR and HPOT connect to
another terminal, when test transformer, the LCUR and LPOT connect to the Np-side of
transformer, HCUR and HPOT connect Np +side, Sec(+) connects to Ns +side and Sec(-) to
Ns-side.
3.6 The Contrast of LCD Display
To adjust the comparison of LCD can be usedby the system configuration this function, but
be careful that the adjusting should be depended on personal acceptable brightness.

Panel Description
4-1
4. Panel Description
4.1 Front Panel Description
(1) LCD Display
The resolution of this instrument display is 320x240 Graphic mode LCD, and including "cold
CRT" back-light adjusting, so all the measurements and setting values can be shown clearly,
and the functions of back-light and comparison can fit all different environments.
(2) Guard
This guard terminal directly connects the cover of test instrument, then connects to the
isolation of this unknown component. By doing this is to avoid the atmosphere or exterior
signal obstructing accuracy.
(3) Unknown measurement connectors
Four individual BNC sockets connect an external test device or wire for unknown testing.
HCUR : Current drive terminal, high.
HPOT : Potential detector terminal, high.
LPOT : Potential detector terminal, low.
LCUR : Current drive terminal, low
 Notice :
That "high" terminals for (
＋
) and "low" terminals for (
－
) polarity as marked on the
front panel while polarized component is under test.
 Beware : Please discharge the unit before measure the pole components to avoid
shock the instrument.

Automatic Transformer Test System 3300/3302 User’s Manual
4-2
(4) Secondary Turn-Ratio and Phase appropriate terminal
2 individual BNC sockets, in testing PH and turn ratio period connect an external test device
or wire to transformer secondary side for unknown measurement.
Sec(+) : voltage inspector terminal, high voltage.
Sec(-) : voltage inspector terminal, low voltage.
(5) Selective key
The major function is to show the different conditions of each function or other options which
need to be selected according to the user’s requirement.
(6) The functions of measure display (3302 only)
After press this key then the instrument is in basic component measure & analysis condition.
Under this screen each test parameter can be changeddirectly and the value can be read out.
For example, test voltage, parameter, speedy, series or parallel…etc.
(7) Main function key
Press this key for entering the main index screen. In this screen you may select what you
want to test, for example, transformer test function, the analysis of unknown test result,
statistic of unknown test result, multi-frequencies scan test, open test, short test,…and so on.
(8) System parameter setup key
Press this key for entering the main system parameters setup, each system parameters can be
changed directly under this screen. For example, the function of calibration in this
instrument, set the store data function, set the data recall function, set the system data and
time function, select and set the each system reveal able parameter and measure parameter
(the function of calibration entrance need password)
(9) Cursor key
There are up, down, left, rightfour keys, these keys are for display in difference kinds
condition, to control cursor can be useful to input each parameter, can also be selective keys,
for example, change value like setting frequency or voltage.
(10) Start/Trig key
Start to test the unknown, when the measure condition of instrument is external trigger or
manual trigger, press this key to measure.
(11) Numbers and symbol key (0…9.-)
These numbers and symbols are for each setting condition that need to input value and
symbol.