Microtest CT-8750, CT-8700 User Manual

4-Wire Precision Cable/Harness Tester

8750

User Manual

MAR 2016

CT-8750 U ser’s Guide

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Professionalism and Technology Innovation are our

philosophy in designing and marketing our T&M

instruments in satisfying our customers. We

achieved ISO-9001 international quality standard

certification and also many patents as well.

We trust Microtest can be your best partner.

Thank you for purchasing
Microtest’s products!
Our Products include:

 Transformer Tester
 LCR Meter
 Cable/Harness Tester
 Power Cord Tester
 Universal Function Tester
 Network Device Tester
 ICT (In-Circuit Tester)
 DC Fan Tester
 Motor Tester

“Good tools are prerequisite the successful execution of a job”

read and follow all instructions and installation carefully,

the product can provide you the best!

Version (1.0)

CT-8750 User’s Guide

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CHAPTER I GENERAL EXPOSITION ................................................................................................................ 5

I.1 PACKAGE & EQUIPMENT ...................................................................................................................... 5

I.2 SYMBOL & WORD ................................................................................................................................. 5

I.3 GENERAL OPERATION GUIDELINES ...................................................................................................... 6

I.4 TESTER TOUR ........................................................................................................................................ 7

I.4.A THE FRONT PANEL ................................................................................................................................ 7

I.4.B THE POINTS ........................................................................................................................................... 8

I.4.C THE REAR PANEL ................................................................................................................................. 10

I.5 SYSTEM INSTALLATION ....................................................................................................................... 11

I.6 KEY DEFINITION .................................................................................................................................. 11

I.6.A SYSKEY GROUP .................................................................................................................................... 11

I.6.B FASTKEY GROUP .................................................................................................................................. 11

I.6.C EDITKEY GROUP .................................................................................................................................. 12

I.6.D [ENTER] CONFIRMATION ............................................................................................................... 12

I.6.E [TEST] TO START TEST .................................................................................................................... 12

I.6.F [RESET] SYSTEM WILL BE RE-STARTED WHEN PRESSED TO PERFORM THE ............................... 12

WARM STA R T. ..................................................................................................................................................... 12

I.6.G SOFTKEY GROUP ................................................................................................................................. 12

CHAPTER II SYSTEM FUNCTION AND CONFIGURATION ......................................................................... 13

II.1 SYSTEM FUNCTION ............................................................................................................................. 13

II.1.A SELFTEST .............................................................................................................................................. 14

II.1.B SYSTEM VERSION INFORMATION ....................................................................................................... 15

II.1.C CALIBRATION ....................................................................................................................................... 16

Contents

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II.1.C.A OPEN/SHORT CALIBRATION ............................................................................................................... 17

II.1.C.B C O ND UC TANC E CAL IB RAT ION ............................................................................................................ 18

II.1.C.C DC H//V CALIBRATION ........................................................................................................................ 19

II.1.C.D AC H/V CALIBRATION .......................................................................................................................... 20

II.1.C.E INSULATION CALIBRATION ................................................................................................................. 21

II.1.D PIN SEARCH ......................................................................................................................................... 22

II.2 SYSTEM SETUP .................................................................................................................................... 23

II.2.A SYSTEM ENVIRONMENTS SETUP ....................................................................................................... 23

II.2.A.A POWER ON SELF-TEST ........................................................................................................................ 24

II.2.A.B POWER LINE FREQUENCY................................................................................................................... 24

II.2.A.C KEY STROKE SOUND ............................................................................................................................ 24

II.2.A.D KEY OPERATION .................................................................................................................................. 25

II.2.A.E LCD CONTRAST .................................................................................................................................... 26

II.2.A.F LCD INVERSE........................................................................................................................................ 26

II.2.A.G LANGUAGE .......................................................................................................................................... 26

II.2.B TEST ENVIRONMENT SETUP ............................................................................................................... 27

II.2.B.A TEST ALARM ........................................................................................................................................ 27

II.2.B.B DISPLAY TEST DATA ............................................................................................................................. 28

II.2.B.C PRINTER DATA REPORT ....................................................................................................................... 28

II.2.C DATE & TIME SETUP ............................................................................................................................ 28

II.2.D PASSWORD SETUP .............................................................................................................................. 29

II.3 PRINT FUNCTION ................................................................................................................................ 30

II.4 OPEN/SHORT SETUP & TEST .............................................................................................................. 31

II.4.A O/S THRESHOLD SETUP ...................................................................................................................... 31

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II.4.B O/S SCANNING SPEED ........................................................................................................................ 31

II.4.C O/S END DETECTION ........................................................................................................................... 32

II.4.D INT. S/O STOP MODE .......................................................................................................................... 32

II.4.E INT. O/S TIMER .................................................................................................................................... 32

II.5 STATISTIC REPORT ............................................................................................................................... 32

CHAPTER III SEQUENCE TEST SETUP ........................................................................................................ 34

III.1 TEST CONDITION SETUP ..................................................................................................................... 34

III.1.A OPEN/ SHORT ...................................................................................................................................... 34

III.1.B CONDUCTANCE SETUP ....................................................................................................................... 35

III.1.C R/L/C SETUP ........................................................................................................................................ 36

III.1.D TEST MODE EDIT ................................................................................................................................. 40

III.2 RUN THE SEQUENCE TEST .................................................................................................................. 41

III.2.A RUN THE REAL TIME SEQUENCE TEST ............................................................................................... 41

III.2.B RUN THE EXISTED SEQUENCE TEST ................................................................................................... 42

III.3 FILE MANAGEMENT ............................................................................................................................ 43

III.3.A OPEN FILE ............................................................................................................................................ 43

III.3.B OPEN NEW FILE................................................................................................................................... 44

III.3.C DELETE FILE ......................................................................................................................................... 44

III.3.D SORT FILE ............................................................................................................................................. 45

III.4 VIEW MODE ........................................................................................................................................ 46

APPENDIX A、 CT-8750 CABLE SETS ....................................................................................................... 47

APPENDIX B、 CT-8750 TEST RANGE AND FUNCTION .......................................................................... 49

APPENDIX C、 CT-8750 SPECIFICATION ................................................................................................. 50

CHAPTER I General Exposition

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Chapter I

General Exposition

I.1

Package & Equipment

Standard equipment included in the CT-8750 professional Cable/Harness Tester
are listed below:

 CT-8750 Pro. Cable/Harness Tester x1
 Power cord & Power line adapter x1
 User’s Guide x1
 Pin search probe x1
 Connection cables x2
 Test report x1
 Din to horn converter x2

I.2

Symbol & Word

 [xxxx] Fast Key (i.e. [TEST])
 Sy[xxxx] SoftKey, y is the no. of Softkey (1~6),

xxxx is the Function (i.e. S2[PROG])

 {xxxxxxxx} Message on LCD
 |xxxx| Selecting items on LCD ( i.e.|ON|)
 <Pxx> Reference pages (i.e.<P21>)
 (xxxx) English exposition



Operation Procedure

Notice/Attention

 Shortcuts

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I.3

General Operation Guidelines

 Alphanumeric Input: When save a file that need key in alphanumeric, this

series is use the Edit Key. The first time pressing is number, the second to
fourth pressing each meaning follow the number key from left to right side
of the top capital, For example as below:

Key Key Pressed LCD Display

1 1 1
 1 1
1 2 1A
 1 1A
1 3 1AB

 Move Click[←][↑][→][↓]to move cursor
 Confirmation Press [Enter]to confirm
 Tes t/Exit Press [TEST]to start test，[Exit] to exit

 Shift Press [Shift] to launch alternative function

CHAPTER I General Exposition

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I.4

Tes ter Tou r

I.4.A

The Front Panel

(1) LCD Display
(2) S1~S6 SoftKeys
(3) PASS & FAIL & HIPOT LED Indicator
(4) EditKey Group
(5) MoveKey Group
(6) Fastkey Group
(7) SysKey Group
(8) Power Switch
(9) HV Calibration Output
(10) Pin Search Connector
(11) 32 Pin Fixture Connector Slot (4 Slots are shown with 256 Pins. Only A and

B two slots equipped with standard 64 pins)

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I.4.B

The points

(1) This series is 4 Wire measurement, it can test micro-resistance, but each test

point must have 2 connected point with instrument.

(2)

4 Wire measurement test

2 Wire measurement test

The 4 wire measurement greater the accuracy

(3) Wiring map

under impedance test

Error Source

Current Source Under Test

Measurement

Device

Current Source Under Test

Measurement

Device

CHAPTER I General Exposition

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(4) When change over from 4 wire to 2 wire measure mode, simply short 2

pins together then connect to DUT.

(5) When the 4 wire circuit connect incorrect that will lead to the unforeseen

test result.

(6) Please use the fixture wiring function to test the fixture wiring whether

correct or not.

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I.4.C

The Rear Panel

(12)

(13)

(14)

(15)

(16)

(17)

(12) RS-232 Port
(13) USB Port
(14) Remote Port
(15) Printer Port
(16) AC Power Input Port (220V/5A/50Hz)
(17) Fan

 Please make sure AC voltage setting is consistent with applied voltage.
 Please make sure the AC power is grounding.

CHAPTER I General Exposition

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I.5

System Installation



Operation Procedure

(a) Be sour the AC input voltage selecter on the rear panel, power supply is set

to the proper position (AC 115 or 230V)

(b) Connect the converter and DUT cable
(c) Turn on the power the system will process self –test
(d) After self-test, LCD will display the READY SCREEN as below

 Software Version



Current Time

(e) Press power switch to turn the system off if needed

 The self-test will be conducted right after the system is turned on. It will

take 60~80 seconds.

 At the {READY} status, (Ready Screen display), Softkey S1 to S6 have the

following functions.

 S1 Higher LCD contrast
 S2 Lower LCD contrast

 S5 Display current software version and time
 S6 Select English/Chinese

I.6

Key Definition

I.6.A

Syskey Group

[Func] Function Menu
[Sys] System Configuration Menu
[Print] Printing Menu

I.6.B

Fastkey Group

[O/S] Display the Open/Short Status
[Learn] Open/Short Auto Learning

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[File] File Management
[Stat] Display the statistic information
[Mode] Test Mode Setup
[Cond] Conductance Test Setup
[RLC] Resistance/Inductance/Capacitance/Diode Test Setup
[H.V. ] High Voltage Setup

I.6.C

EditKey Group

Alphanumeric key Use for key in alphanumeric, including 0~1 and A~Z,．/
[BS] () Back Space

Cursor Keys Use to move cursors, including[←] [→] [↑] [↓]

And [PgUp] [PgDn]

[Exit] Exit from current status/screen

I.6.D

[Enter] Confirmation

I.6.E

[TEST] To start test

I.6.F

[Reset] System will be re-started when pressed to perform the

warm start.

I.6.G

SoftKey Group

S1~S6 keys are located on the right side of LCD display and correspond for the

auxiliary setup/activate/switch function.

CHAPTER II System Function and Configuration

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Chapter II

System Function and Configuration

System Function and Configuration, including Main Function. System
Configuration Setup and Printing Function, is described detail as following.

II.1

System Function
Main function includes several advanced functions, which are described below:



Operation Procedure

(a) Press[Func]
(b) LCD display as following

(c) Press [↑] or [↓] to select the item needed
(d) Press [Enter] to confirm selection

(e) press[Exit] to return

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II.1.A

Selftest
The SELFTEST routine is to test the CPU, RAM, ROM, EEPROM, and CLOCK.



Operation Procedure

(a) Press [Func]

(b) Press [↑] or [↓] to select the item and press[Enter]
(c) The program is running self-Test function
(d) LCD display as following

←

Stop Self-Test

(e) Press [Exit] to return

CHAPTER II System Function and Configuration

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II.1.B

System Version information

This function provides the instrument information including Model/Test

Capability/Software Version/Edition/Released Date/ Total File Space and Free

File Space Operation Procedure

(a) Press [Func], useing [↑] or [↓] to select the item

(b) Press [Enter]，LCD diplay as following

(c) From LCD display shows, you can get the Model/Test Capability/Software

Version/Edition/Released Date/Taotal File Space and Free File Space

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II.1.C

Calibration



Operation Procedure

(a) Press [Func]

(b) Use [↑] or [↓] to select the item

(c) Press [Enter] to enter to the subordinate mune of calibration mode

(d) LCD display as following

(e) Change this function will influence the accuracy of the instrument,

password is require for entering this page.

CHAPTER II System Function and Configuration

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II.1.C.a Open/Short Calibration



Operation Procedure

(a) Press [Func] and useing [↑] or [↓] to select Calibration

(b) Press [Enter] to enter to the subordinate mune of calibration mode

(c) LCD display as following

(d) Use [↑] or [↓] to select to (1) O/S Cal. And press [Enter]
(e) LCD display as following

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(f) Prsee S1[UP] or S2[DOWN] to adjust code
(g) After Setup finished, press S5 [DONE] to save or S6 [QUIT] to exit without

saving the setup

II.1.C.b Conductance Calibration



Operation Procedure

(a) Opoeration the same O/S Cal. In the subordinate menu of calibration mode,

using [↑] or [↓] to select (2)Cond. Cal. Item, LCD display as following

(b) Press [Enter], LCD display as following

(c) Press S1[UP] or S2[DONT] to adjust code
(d) After setup finished, press S5 [DONE]

(e) If you want to abandon data, press S6[QUIT] to exit this screen

CHAPTER II System Function and Configuration

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II.1.C.c DC H//V Calibration



Operation Procedure

(a) Operation is the same before, in the subordinate mune of calibration mode,

using [↑] or [↓] to select (3) DC H/V Cal , LCD display as following

(b) Press [Enter], LCD display as following

(c) Press S1[UP] or S2 [DOWN] to adjust code, let the reading value match or

closer to the standard voltage as much as possiable

(d) Aslo you can press S4 [AUTO] adjust code automatically

(e) After setup finished, press S5 [DONE] to save
(f) If you want to abandon data, press S6[QUIT] to exit this screen

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II.1.C.d AC H/V Calibration



Operation Procedure

(a) Operation is the same before, in the subordinate menu of calibration, use

[↑] or [↓] to select (4) AC H/V Cal. LCD display as following

(b) Press [Enter] LCD display as following

(c) Press S1 [UP] or S2[DOWN] to adjust code, let the reading value match or

closer to the standard voltage as much as possiable

(d) Also you can press S4[AUTO] to automatica setup code

(e) After setup finished, press S5[DONE] to save

(f) If you want to abandon data, press S6[QUIT] to exit from this screen

CHAPTER II System Function and Configuration

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II.1.C.e Insulation Calibration



Operation Procedure

(a) Operation is the same before, in the subordinate menu of calibration, using

[↑] or [↓] to select (5) Insu.Cal. LCD display as following

(b) Press [Enter], LCD display as following

(c) Press S1[UP] or S2[DOWN] to adjust code, let the reading value match or

closer to the standard voltage as much as possiable

(d) After setup finished, press S5 [DONE] to save
(e) If you want to abandon data, press S6[QUIT] to exit from this screen

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II.1.D

Pin Search

The function can automatic show the pin address contacted that we select



Operation Procedure

(a) Press [Func]

(b) Using [↑] or [↓] to select this item

(c) LCD display as following

(d) Press [Enter] to start search for pin
(e) Connect with Pin Search Probe, fixture or cable, instrument will automatic

detect pin location

(f) LCD display as following, the A08/A09/A10/A25 locations were detected

CHAPTER II System Function and Configuration

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II.2

System setup

System Setup includes system configuration and test condition setup. The details

describe as following.



Operation Procedure

(a) Press [Sys]

(b) LCD display as following

(c) Using [↑] or [↓] to select item

(d) Press [Enter] to get in the indicate item to setup working

II.2.A

System Environments Setup



Operation Procedure

(a) Press [Sys]

(b) LCD display as following

(c) Using [↑] or [↓] to select (1)System Env. And press [Enter]

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(d) LCD display as following

(e) Use [↑] or [↓] to select a setup item
(f) If need, press S1[PROG] to change, after setup finished, press [Enter]
(g) Complete setup, press [Exit] to leave

II.2.A.a Power ON Self-Test

There are 2 selections, press S1[PROG] to shift, the pre-code is│ON│

 YES Power On Self-Test function is turn on

 NO Power On Self-Test function is turn off

II.2.A.b Power Line Frequency

There are 2 selections, Press S1 [PROG] to shift, the pre-code is│60Hz│

 50Hz Power Line Frequency setup is 50Hz

 60Hz Power Line Frequency setup is 60Hz

II.2.A.c

Key stroke Sound

This instrument can follow requirement to shift key sound to be ON/OFF, the

pre-code is |ON|

 ON Sound performed when any key pressed

 OFF Sound do not performed when any key pressed

CHAPTER II System Function and Configuration

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II.2.A.d Key Operation

This instrument provide key protection that to avoid any data be modified, the

default setup is |Unlock |

 If want to select key protective or remove it which have to enter passwords,

the detail please read User’s Guide



Operation Procedure

(a) Press [Sys] to enter System Enviroement setup

(b) Use [↑] or [↓] to select (4)Key Operation
(c) LCD display as following

(d) Enter passwords xxxx，LCD display as following

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(e) Press [Enter], LCD display as following

(f) Now the key protective has been removed and data can be modified, the

key operation setup from |LOCK | transform to|UNLOCK|.

 Remove the protection mode if forgotten the passwords, in the display

screen {enter old passwords} and press [Shift]+[BS] the original will be
shown, if want to change the passwords, please read above operation
procedure.

II.2.A.e LCD Contrast

This function provide LCD bright level control, There are 1~8 steps totally.

 1~8 Press S1[PROG] to adjust screen contrast, screen will follow

number to shift brighter or darker.

II.2.A.f LCD Inverse

Press S1[PROG] to change LCD inverse to be ON/OFF, screen will follows to shift

inverse or normal.

 ON LCD shows inverse screen

 OFF LCD shows normal screen

II.2.A.g Language

Press S1 [PROG] to change language to be Chinese or English

CHAPTER II System Function and Configuration

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II.2.B

Test Environment Setup



Operation procedure

(a) Press [Sys] and using [↑] or [↓] to select Test Env. item
(b) LCD display as following

(c) Press [Enter], LCD display as following

(d) Use [↑] or [↓] to select item which you are going to setup

(e) Press S1[PROG] to change
(f) Press [Enter] , after setup has been done

II.2.B.a Test Alarm

The function is able /unable to alarm performed during the sequence test. You

can set the proper selection depending on your need.

 ALL Both PASS/FAIL sound on.

 OFF Both PASS/FAIL sound off.

 PASS Alarm performed only PASS test occurred.

 FAIL Alarm performed only FAIL test occurred.

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II.2.B.b Display Test Data

The function is to activate/deactivate the display under the sequence test. When

you select, the display function of test data will be set simultaneously.

 ALL Both PASS/FAIL auto print on

 FAIL FAIL auto print process only

II.2.B.c Printer Data Report

The function is to change the printer Data Report whether Auto or not.

 AUTO The Printer Data Report auto print on

 MANUAL The Printer Data Report auto print off, you have to setup

by yourself.

II.2.C

Date & Time Setup



Operation Procedure

(a) Press [Sys] and use [↑] or [↓] to select item
(b) LCD display as following

(c) Press [Enter], LCD display as following

CHAPTER II System Function and Configuration

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(d) Press S1[SET]

(e) Key in a exact date and time

(f) Complete it then press [Enter] to leave

 Hour is 24-hours mode setting

II.2.D

Password Setup

You can set a system password to protect setting from revision.



Operation Procedure

(a) Press [Sys] and using [↑] or [↓] to select this item
(b) LCD display as following

(c) Press [Enter], LCD display as following

(d) Key in a initial password and press [Enter]

(e) Key in a new password and press [Enter]

(f) Key in new password again and press [Enter] to confirm, the screen will

display {success}

(g) When new password setup has been done the screen will return to the

selection menu

(h) Repeat (c)-(f) steps and input the proper password to protect data

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II.3

Print Function

This function is to print the test data through printer port. The operation and

functions exposition as following



Operation Procedure

(a) Press [Print]

(b) LCD display as following

(c) Use [↑] or [↓] to select data which you want to print

(d) Press [Print]

CHAPTER II System Function and Configuration

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II.4

Open/Short Setup & Test
This system designs to perform the O/S setup by automatic learning from the
existed connections. After the learning process, the LCD display will auto­matically show O/S status of DUT.



Operation Procedure

(a) Press [O/S], LCD display as following

(b) The O/S list come from learning, so press S3 [LEARN]

(c) Press S6 [O/S EDIT], LCD display as following

(d) Press S1[PROG] and key in alphanumeric what you want to setup

(e) Complete it and press [Exit] to leave

II.4.A

O/S Threshold Setup

Press S1 [PROG] to shift value in 2/5/10/20/50 kΩ

II.4.B

O/S Scanning Speed

Press S1 [PROG] to shift AUTO／FAST／MED／SLOW

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II.4.C

O/S End Detection

When run into the Open/Short whether to detect pins or not. If setup is NO that
speed would be faster, but do not detect the O/S end.
Press S1[PROG] to change setup to be YES／NO

II.4.D

Int. S/O Stop Mode

Press S1[PROG] to change setup to be AUTO／TIMER

AUTO：The system is repeatedly testing until the DUT cables completely take off

then stop automatically.

 TIMER：To follow the test time doing test

II.4.E

Int. O/S Timer

Use alphanumeric to key in Int. O/S timer, but if mode setup is AUTO and this

setting will not work

II.5

Statistic Report

You can view the statistics report by just press [Stat] key. The report includes

total test amounts, pass/fail amount and fail analysis in quantity/percentage.



Operation Procedure

(a) Press [Stat], LCD display as following

(b) Press S1[QTY.RATE] to display in percentage mode

CHAPTER II System Function and Configuration

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(c) LCDdisplay as following

(d) Press S4 [CLR] to clean the data of statistic

(e) Press [Exit] to leave

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Chapter III

Sequence Test Setup
Sequence test was designed by software programming to test DUT by multiple
test condition (setup) to complete the auto test in single routine by pressing just
one button. It saves time and effort effectively in mass production lines. It
includes three sessions.

 Test Condition Setup
 Run The Sequence Test
 File Management

III.1

Test Condition Setup

Test conditions setup are defined to setup the test signals, control limits, and
necessary items before preceding the sequence test routine. That includes O/S
/ Cond /RLC/HV …setup.

 The signs of test parameter (Frequency, voltage and Current)
 Control standard. specification standard and tolerate percentage

III.1.A Open/ Short



Operation Procedure

(a) Press [O/S]
(b) LCD display as following

(c) Open/Short list is from learning
(d) Complete it then press [Exit] to leave

CHAPTER III Sequence Test Setup

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III.1.B Conductance Setup



Operation Procedure

(a) Press [Cond]
(b) LCD display as following

(c) Use [↑] or[↓] to select the item needed
(d) Complete setup, press [Exit] to leave

 High limit use number key to enter value, the limit is 0~50Ω

 Low limit use number key to enter value, the limit is 0~50Ω
 Test Speed Press S1[PROG] to shift speed as FAST/LOWER/FMID/AUTO

When setting is AUTO, the system will automatically select

fastest and steadiest test speed to progress

 Int. Limit Spec Use numeric key to enter value, the limit is ±50Ω

This function provides the repeatedly test at one DUT

 Int. Stop Mode Use S1 [PROG] to change mode be AUTO/TIMER

AUTO: System will test repeated until DUT cable

completely take off then automatic stop

TIMER: Follow test time to do test

 Int. timer Use alphanumeric key to setup second, the limit is 0~99,

Ho we ver, when the Int. stop mode setting is auto, this function will not
work.

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III.1.C R/L/C Setup



Operation Procedure

(a) Press [RLC]
(b) LCD display as following

(c) Use S1 [HOME] move cursor to the first of R/L/C setup data.

(d) Press S2 [END] move cursor to the end of R/L/C setup data
(e) Press S4 [COPY] to copy a data from last row
(f) Press S6 [DEL.] to delete a data which you seleced
(g) Use alphanumeric keys to enter a name for the file. For example, enter 1

for the first data

(h) Press [Enter] to confirm

CHAPTER III Sequence Test Setup

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(i) Move cursor to T(Type)，LCD display as following

(j) Press S1[R ]/S2 [L]/S3[C ]/S4[D ] to select item which want to setup
(k) The symbol as follow:R-Resistance, L-Inductance, C-Capacitance, D-Diode
(l) After selected, Press [Enter] cursor will move to ”P+”, LCD display as

following

(m) Use S1[A] or S2[B] to select A/B, and use alphanumeric to enter setup pin

(n) Press [Enter] to confirm
(o) Cursor will move to “Std-Val”, LCD display as following

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(p) In this item, use the alphanumeric to setup stand value as weel
(q) After, useS1[Ω]/S2[KΩ]/S3[MΩ] to select a unit of Std-Val unit
(r) Press[Enter] to confirm, cursor will move to “Tol%” display as following

(s) Use alphanumeric to setup tolerate
(t) Use S1[>=STD]/S2[<=STD]/S6[ALL SAME] to shift tolerate setup

(u) Following this way to setup test condition what you needed, LCD display as

following

(v) Press [ Enter ] to confirm, LCD display as following

CHAPTER III Sequence Test Setup

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(w) Complete it then press [ Exit] to leave

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III.1.D Test Mode Edit

Test Mode Setup is to set the related action during the sequence test routine.



Operation Procedure

(a) Press [Mode]
(b) LCD display as following

(c) Use [↑] or [↓] to move cursor to the item you want to setup
(d) Use alphanumeric to enter setup value, or press S1[PROG] to change

setup of the test items.

(e) Press S6 [PARA] to select item which you want to test

(f) Press S6 [PARA], LCD display as following

(g) Use [↑] or [↓] to move cursor to an item which you want to setup

(h) Press S1[PROG] to change that item whether process test or not

CHAPTER III Sequence Test Setup

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(i) The Items Exposition
 Trigger Mode

Press S1[PROG] to shift setting to be MANUAL／AUTO.
When this function is ON, the system will scan cable whether connect with

fixture or not. If so, the system will start testing automatically, when the
setting is OFF, you can only use [Test] to start test.

 Trigger Delay Use alphanumeric to enter delay times.
 Break Point

Press S1[PROG] to shift test setting to be OFF／O/S／L/V.

 Repeat Test Press S1[PROG] to shift setting to be ON／OFF.
 Repeat Count

Use alphanumeric to enter repeated test count. When the setting is ON,
the test count setting is 0, the system will test repeatedly until run against a
fail.

 Repeat interval Use alphanumeric to enter repeated test interval time.

III.2

Run The Sequence Test
After the setup completion of all items you needed, the system is ready to
proceed and run the sequence test routine. For the two occasions will occur
description as below:

III.2.A Run The Real Time Sequence Test

This routine is called in applying the setups stored in system memory to process
the sequence test.



Operation Procedure

(a) Check out all of test setup
(b) Press [Mode] will display test mode setup
(c) Check out and confirm the test mode setup whether correct or not, and

modify if needed.

(d) Press [EXIT] to return to the main screen
(e) Press [TEST] to start test

(f) When finish or need discontinue test, press [EXIT] to leave.

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III.2.B Run The Existed Sequence Test

You can load existed file from storage memory to main memory to run the
sequence test routine.



Operation Procedure

(a) Press[File]
(b) Use [↑] or [↓] to move cursor to the file you needed

(c) Press [Enter] to confirm selection and call the file load routine
(d) LCD will return to main screen and the file shows that file name you have

selected

(e) Press [EXIT]to return to main screen
(f) Press [Mode] display the test mode setup screen
(g) Check out all test setup previously before saving
(h) Press [EXIT] to return to main screen
(i) Press [TEST] and start testing
(j) Press [EXIT] to leave when the test finish or discontinue

CHAPTER III Sequence Test Setup

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III.3

File Management
You can call the Load; Sort or Del routines to proceed file management for
running the EXISTED SEQUENCE TEST implementation:

III.3.A Open File

Open File is to load a file in storage memory to main memory, which completes
the preparation for the running of sequence test.



Operation Procedure

(a) Press[File]
(b) LCD display as following

(c) Use [↑] or [↓] move cursor to the item you needed
(d) Press [Enter] to start loading file
(e) The tester start to load file from those files have been selected into main

memory.

(f) LCD display will return to main screen, the present file will show the files

name as you have selected, now then, the files load are completive.

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III.3.B Open New File



Operation Procedure

(a) Press [File], and press S1[NEW] to open an new file
(b) LCD display as following

(c) Enter an name for new file
(d) Confirm the file which you are going to setup and press [Enter] the

file has been done.

III.3.C Delete File

Delete File routine is to delete the file in storage memory parentally to save
the space of storage memory.



Operation Procedure

(a) Press [File] and use [↑] or [↓] to select the item you want to delete.

(b) Press S3 [DEL.] to delete file
(c) LCD display as following

(d) Confirm the file’s name and press [Enter], the file will be deleted.

CHAPTER III Sequence Test Setup

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III.3.D Sort File

Save File routine is to save the file in main memory to storage memory for the
application of editing, monitoring, and running of sequence test.



Operation Procedure

(a) Press [File]
(b) LCD display as following

(c) Press S5[SORT] to sort files depend on your selection

 Descending by name
 Ascending by name
 Ascending by sequence of stored date
 Descending by date
 Ascending by date

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III.4

View Mode
This function display the mode of the files record.



Operation Procedure

(a) Press [File]
(b) LCD display as following

(c) Use S6[VIEW MODE] to shift files management screen to be simple sort

files, display as following.

APPENDIX

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APPENDIX A、 CT-8750 Cable sets

1.

RS-232C CABLE

9-PIN connector (Female) 25-PIN connector (Female)

2. PRINTER CABLE

25-PIN

connector

(Male)

36-PIN connector

(Male)

Symbol

1

1

STROBE 2 2

DATA 0

3

3

DATA 1

4

4

DATA 2 5 5

DATA 3 6 6

DATA 4 7 7

DATA 5 8 8

DATA 6 9 9

DATA 7

10

10

ACKNLG

11

11

BUSY

13

13

SLCT

18 ~ 25

19 ~ 30, 33

GND

1

2
3
4
5
6
7
20

NC 1

RxD 2
TxD 3
DSR 4
GND 5
CTS 6
CTS 7
RTS 8
GND 9

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3. CT-8750 REMOTE

15-PIN Connector

1

CTL0

9

IPC∅

2

CTL1

10

GND

3

CTL2

11

4 CTL3

12

RESET

5

CTL4

13

+5D

6

CTL5

14

+12D

7

CTL6

15

GND

8

CTL7

IPC∅+GND define as [TEST ] input (short these two pins )

On testing status, the CTL 0, CTL 2, CTL 3, are the output signal which are defined as bellow:

CTL0

Testing…

CTL1

HV output

CTL2

“PASS” status

CTL3

”FAIL” status

CTL0 ~ CTL7 Inside circuit diagram listed as following

APPENDIX

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APPENDIX B、 CT-8750 Test Range and Function

ITEM SYMBOL TEST RANGE

Open/Short O/S 2KΩ~100KΩ

Intermittent O/S 2KΩ~100KΩ

O/S End judgement

Conductance COND Max. 50.0Ω

Intermittent Cond. Max. 50.0Ω

Resistance R Max. 20.0MΩ

Capacitance

C

10pF~1000µF

Zener Zener 0.0~7.5V

Insulation IR 0.1MΩ~1000MΩ

Hipot Hipot Max. 10mA

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APPENDIX C、 CT-8750 Specification

Advanced Functions

4-Wire Measurement

Programmable Sequential Test

Auto Pin Search

Self Diagnostic / Self Calibration

Scanning Mode

Auto/Short Switchable

Test Single Information

Output Rating: 5Vdc

DC Hiport / Insulation 50~1000Vdc/50~1000Vac(/FA)

50V Resolution

±1% Accuracy

Display and Sound

320 x 240 Graphic LCD Display

Pass/Fail LED Indicator/LCD Display

Internal Speaker

Connections

64 Test Points

128 Test Points (Optional)

Hipot Calibration +/- Output

Auto Pin Search Jack

Front Panel Control Buttons

Syskey / Fastkey / Editkey

I/O Interface

RS-232 Port

Printer Port

Remote Control Port

Memory

56 Setup Files

Max. 120 Setup Files (Optional)

Power Supply

115/230Vac ± 10% Switchable

60/50Hz

Accessory

Remote Control Cable (Optional)

RS-232 Cable (Optional)

Power Cord

User's Guide

Temperature & Humidity

15ºC~35ºC

RH≦75%

Dimension (WxHxD)

425 x 190 x 350mm

Weight

Approx, 15kgs (w/o Accessory)

Cable Capacitance Limit

1µF Max.

Ordering Information

CT-8750
/64P
/128P

/256P

4- Wire Universal Cable / Harness Tester
64 Test Points
128 Test Points

256 Test Points