Microtest 8751, 8761 User Manual

8751/8761

4-Wire Universal Cable/Harness Tester

User Manual

Version: 1.00

Issued Date: May, 2017

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Table of Contents

Chapter 1 Cautions ...................................................................................................................................... 3

1.1 Safety Symbols ................................................................................................................................ 3

1.2 A void Self-Modification or Calibration ........................................................................................... 3

1.3 Static Electricity ............................................................................................................................... 3

1.4 Ground ............................................................................................................................................. 3

1.5 Power Supply ................................................................................................................................... 3

1.6 Warming-Start .................................................................................................................................. 4

1.7 Device Malfunctions ........................................................................................................................ 4

1.8 Unexpected T ermination during Test Process .................................................................................. 4

1.9 Location and Storage ....................................................................................................................... 4

1.10 Troubleshooting for Urgent Conditions ......................................................................................... 4

Chapter 2 General Summary ..................................................................................................................... 5

2.1 Package and Accessories ................................................................................................................. 5

2.2 Description of Nouns and Symbols Used in this Manual ................................................................ 5

2.3 Operating Basics .............................................................................................................................. 6

2.4 Front and Rear Panel Displays ........................................................................................................ 7

2.4.1 Front Panel ............................................................................................................................ 7

2.4.2 Rear Panel ............................................................................................................................. 9

2.5 Block Diagram of Tester Functions ............................................................................................... 11

2.6 Installation ..................................................................................................................................... 12

2.7 Button Usage Instructions .............................................................................................................. 14

Chapter 3 Function Setting and System Setting ..................................................................................... 15

3.1 Function Menu ............................................................................................................................... 15

3.1.1 System Self-Test ................................................................................................................. 16

3.1.2 RAM Configuration Table .................................................................................................. 17

3.1.3 T est Parameter Calibration .................................................................................................. 17

3.1.4 Pin Search ........................................................................................................................... 21

3.1.5 Meter Mode ........................................................................................................................ 22

3.1.6 Networking Fixture Setting ................................................................................................ 26

3.2 System Setting (SYS) .................................................................................................................... 27

3.2.1 Setting the Operating Environment .................................................................................... 28

3.2.2 Setting the Testing Environment ......................................................................................... 30

3.2.3 Set System Time ................................................................................................................. 33

3.2.4 Change System Password ................................................................................................... 34

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3.3 Print Function Menu ...................................................................................................................... 35

3.4 Learning Short Circuit Setting and Edit ........................................................................................ 35

3.5 File Management (File) ................................................................................................................. 38

3.6 Statistical Data (Statistic) .............................................................................................................. 38

3.7 Mode Setting (Mode) ..................................................................................................................... 39

3.7.1 Multiple Simultaneous Test DUT (MiltiDut) ..................................................................... 48

3.7.2 T est Item (Item) .................................................................................................................. 50

Chapter 4 Comprehensive Test Mode ...................................................................................................... 50

4.1 Test Condition Setting ................................................................................................................... 51

4.1.1 Test Condition Setting O/S NET (OPEN/SHORT) ............................................................ 51

4.1.2 Conductance Test Edit (Conductance) ................................................................................ 51

4.1.3 R/C/D Component Setting Edit (Resistance) ..................................................................... 54

4.1.4 High Voltage Setting Edit (HV) .......................................................................................... 58

4.2 Comprehensive Te st Implementation ............................................................................................ 62

4.2.1 Real Time Test .................................................................................................................... 62

4.2.2 Existed Test ......................................................................................................................... 62

4.3 File Management ........................................................................................................................... 63

4.3.1 Select File ........................................................................................................................... 63

4.3.2 Step Setting ......................................................................................................................... 64

4.3.3 Create New File .................................................................................................................. 70

4.3.4 Upload File ......................................................................................................................... 70

4.3.5 Upload All ........................................................................................................................... 71

4.3.6 Delete File ........................................................................................................................... 71

4.3.7 File Sorting ......................................................................................................................... 72

4.3.8 Import File .......................................................................................................................... 74

APPENDIX A Cable Wiring Configuration ............................................................................................ 76

APPENDIX B Test Range and Functions ................................................................................................ 79

APPENDIX C Technical Specifications ................................................................................................... 80

APPENDIX D Version ............................................................................................................................... 81

Microtest Corporation all rights reserved.
Declaration: Microtest Corporation reserves the right to modify the contents of this manual
without further notic e !

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Chapter 1 Cautions

Do not use this instrument outside and avoid humid or dusty areas. Use of this instrument in an improper
setting can increase the risk of electrical shock. Carefully read all safety instructions before using the
device to prevent accidents due to misuse.

1.1 Safety Symbols

The following safety symbols may appear in this user manual and on the device itself.

Caution: Carefully read the user manual for detailed information.

Earthing Required: Check that this terminal is earthed before operating the device to

prevent electrical shocks due to leakage or contact with the housing.

: Improper use of the device may result in instrument or testing DUT malfunctions.

: Improper use of the device may result in injury or death.

1.2 A void Self-Modification or Calibration

Never install surrogate parts onto the machine or undertake any device modifications and internal
calibrations yourself without the express permission of Microtest, as you may increase the levels of
danger associated with the device or damage the device.

1.3 Static Electricity

Keep items bearing static electricity away from the device to prevent damage.

1.4 Ground

A safe ground terminal is located on the outer housing of the back panel of the device; check that
this terminal is properly grounded to prevent contact with the housing and risk of electrical shock.

1.5 Power Supply

You must use a power supply cable that meets local national specifications and an
IEC320-compatible connector to connect the cable to the instrument. The user must check that the
earth wire is properly earthed. If a fuse is included in the power supply plug it must be a 3.15A fuse

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compatible with relevant safety regulations. Always check before use to ensure A/C power supply
and voltage values are between 100V-240V @ 50/60Hz.

1.6 Warming-Start

The testing device can be used normally immediately after switching the power on, but will not
meet accuracy specifications unless allowed to warm up for 30 minutes.

1.7 Device Malfunctions

Return all malfunctioning instruments to the manufacturer for professional repair in order to ensure
the accuracy and operational safety of the instrument.

1.8 Unexpected T ermination during Test Process

Please turn the device off at the power source if it will not be used for a long period of time.

1.9 Location and Storage

The device may be operated normally in temperatures of 18-28°C with up to 80% RH. The device
may not operate in conditions exceeding these limits. The device should be stored at -20°C~70°C
with up to 80% RH. In order to ensure testing accuracy and safety, avoid installing the device
anywhere it would be exposed to direct sunlight, extreme heat, extreme humidity, vibration
frequencies, dust, or unstable power grids.

1.10 Troubleshooting for Urgent Conditions

Switch off the power supply and disconnect the power supply cable in the event of electrical shock,
test item combustion and device combustion.

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Chapter 2 General Summary

2.1 Package and Accessories

Standard accessories included in the 8751/8761 series tester package should include the following items:

 1 x 8751 4-Wire Universal Cable/Harness Tester
 2 x 64 moving needle type boxed connector (128P)
 1 x automatic pin search probe
 1 x power cable and power cable connector (3 pin to 2 pin)
 1 x user manual

2.2 Description of Nouns and Symbols Used in this Manual

 [xxxx] This represents the name of buttons on the tester; for example [TEST]
 [Sy[xxxx] This represents the buttons displayed on the LCD; y is the SoftKey number (1~6),

and xxxx is the button name. For example S1[PROG]

 {xxxxxxxx} This represents the text messages displayed on the LCD
 |xxxx| This represents the switching option name on the LCD; for example |ON|
 <Pxx> This represents related reference page; for example <P21>
 (xxxx) English description

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2.3 Operating Basics

 Alphanumeric input Alphanumeric characters need to be inputted when saving files; the design

used for this system is EditKey. The first time it is pressed, it will be numbers,
and the 2nd~4th time will be the capital English letter from the left to the right
on top of the number buttons respectively; examples are as follows:

Button name Number of times pressed LCD display

1 1 1



1

1

1 2 1A



1 1A

1 3 1AB

 Moving You can use [←][↑][→][↓] to move the cursor
 Confirm [Enter] is the general confirm button
 Test/Exit [TEST] is the start testing button, and [Exit] is the exit button

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2.4 Front and Rear Panel Displays

2.4.1 Front Panel

64 and 128 models:

(1) LCD display
(2) S1~S6 operation auxiliary buttons (Soft Key)
(3) PASS & FAIL & HIPOT LED
(4) Control button (Edit Key) group
(5) Test shortcut button group
(6) System reset (Reset) button
(7) Power switch
(8) Pin Search connector
(9) 128Pin has 2 slots and 256 Pin has 4 slots
(10) Test button [TEST]
(11) System button (Sys Key) group
(12) USB flash drive

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256 model:

(1) LCD display
(2) S1~S6 operation auxiliary buttons (Soft Key)
(3) PASS & FAIL & HIPOT LED
(4) Control button (Edit Key) group
(5) Test shortcut button group
(6) System reset (Reset) button
(7) Power switch
(8) Pin Search connector
(9) 256Pin has 8 slots
(10) Test button [TEST]
(11) System button (Sys Key) group
(12) USB flash drive
(13) High voltage calibration output connector

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2.4.2 Rear Panel

128 model:

(1) Serial port (RS-232 Port)
(2) Remote control port (Remote Port)
(3) Printer Port
(4) High voltage calibration output connector
(5) AC power input (230/115 VAC)
(6) 115/230V switch
(7) Fuse holder 250V/3A
(8) Audio output socket

Note:

1. Please confirm whether the AC input voltage setting is the same as the
voltage used.

2. The input power must be grounded when using the machine.

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256 model:

(1) Serial port (RS-232 Port)
(2) Remote control port (Remote Port)
(3) Printer Port
(4) AC power input (230/115 VAC)
(5) 115/230V switch
(6) Fuse holder 250V/3A
(7) Audio output socket

Note:

1. Please confirm whether the AC input voltage setting is the same as the
voltage used.

2. The input power must be grounded when using the machine.

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2.5 Block Diagram of Tester Functions

Main screen

[Mode]

[TEST]

Test mode setting

Comprehensive

test

[Func] Mode

Function setting

Conduction

setting

Test

Yes/No

[Setup] Mode

System setting

DC insulation

setting

Test

AC tolerance

setting

Yes/No

[Stat]

Statistical data

R setting

Test

Yes/No

[Print]

Print setting

C setting

Test

Yes/No

[TEST]

Comprehensive

test

Diode setting

Test

Yes/No

[File]

File

management

O/S setting

Test

Yes/No

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2.6 Installation

(1) Please confirm the power of the power supply and that the power source connected is AC 115V or

230V.

(2) Connect the connector and test cable according to usage needs.
(3) Turn on the power; the system will execute the self-test program.
(4) When the execution of the self-test is completed, it will officially enter the 8751/8761 system; the

LCD display will be as follows:

(5) To end the system, please press the [Power switch] to end.

Note:

1. Self-test will be executed after powering on, which will take approximately
60~80 seconds.

2. Under the {READY} status, the operation auxiliary buttons S1~S6 will
have the following adjustment functions.

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Power on screen shortcut buttons:

S1 Makes the backlight of the LCD brighter
S2 Makes the backlight of the LCD darker
S3 Increases the volume level
S4 Decreases the volume level
S5 Software version and update date display
S6 Switch between Chinese/English
1 Quickly switches to the short circuit table function (same as [O/S])
2 Quickly switches to the learning function (same as [Learn])
3 Quickly switches to file manager (same as [File])
4 Quickly switches to conductance edit function (same as [Cond])
5 Quickly switches to the component edit function (same as [R/C/D])

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2.7 Button Usage Instructions

【1】

System (Sys Key) button group
[Func] System function menu

[Sys] System setting menu
[Print] Print function menu

【2】

Test shortcut (Fast Key) button group

[File] File manager setting
[Learn] Short circuit learning
[Stat] Display test statistics data
[Mode] Test mode setting
[O/S] Short circuit table display
[Cond] Conductance test edit
[R] Resistance setting edit
[C] Capacitor setting edit
[D] Diode setting edit
[H.V.] DC insulation/AC tolerance setting edit

【3】

Control button (Edit Key) group
Alphanumeric buttons Used to enter alphanumeric characters, including 0~1, A~Z and ．/

[BS] () Back Space
Direction buttons Used to move the cursor; includes [←] [→] [↑] [↓]
[PgUp] [PgDn] makes it easier to edit data
[Exit] Makes the system exit the current status and return to the previous

status

【4】

[Enter] Confirm button

【5】

[TEST] Start test button

【6】

Operation auxiliary button (Soft Key) group, S1~S6 are located to the right of the LCD, which
are used for auxiliary operation/setting

【7】

[Reset] System reset button, which works the same as warm start

【8】

[Save] Save file button

【9】

[Shift] Switch button function button

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Chapter 3 Function Setting and System
Setting

The function settings and analysis modes include main system functions [Func], system settings [Setup]
and print function [Print]; descriptions are as follows:

3.1 Function Menu

Provides the main function menu for the system; its operations and function descriptions are as follows:

(1) Press [Func].
(2) The LCD screen will display as follows:

(3) Please use the [↑] or [↓] buttons to select the item needed.
(4) Press [Enter] to enter the selected item function.
(5) Press [Exit] to return to the previous screen.

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3.1.1 System Self-Test

This function allows the setting for whether this machine will execute the self-test function immediately
upon powering on.

(1) Press [Func]; please use [↑] or [↓] to select system self-test and then press [Enter].
(2) The system will now execute the self-test function.
(3) The LCD screen will display as follows:

(4) Press [Exit] to exit.

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3.1.2 RAM Configuration Table

This item allows the viewing of the 8751/8761 machine and version information; it lists the machine’s
model number, test pins, total space used by files and the total remaini ng space etc. And it can perform
system update.

(1) Press [Func]; please use [↑] or [↓] to select RAM configuration table and then press [Enter].
(2) The LCD screen will display as follows:

3.1.3 Test Parameter Calibration

This function includes DC high voltage calibration, AC high voltage calibration and internal resistance
offset.

(1) Press [Func].
(2) Please use [↑] or [↓] to select test parameter calibration and then press [Enter].
(3) The LCD screen will display as follows:

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(4) Press [Exit] to exit.

DC High Voltage Calibration

The DC high voltage calibration is used to adjust the Read (test value) closest to the DC setting value.

(1) Press [Func].
(2) Please use [↑] or [↓] to select test parameter calibration and then select DC high voltage calibration

and press [Enter].

(3) The LCD screen will display as follows:

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(4) Press S 1 [increase] or S2 [ decrease] t o adjust the Read (test v alue) clo sest to t he DC setti ng value.

Or S5 for automatic adjustment.

(5) When setting is complete, please press S4 [Save].
(6) To cancel the set data, simply press S6 [Cancel].

AC High Voltage Calibration

The AC high voltage calibration is used to adjust the Read (test value) closest to the AC setting value.

(1) Press [Func].
(2) Please use [↑] or [↓] to select test parameter calibration, then select AC high voltage calibration and

press [Enter].

(3) The LCD screen will display as follows:

(4) Press S1 [UP] or S2 [DOWN] to adjust the Read (test value) closest to the AC setting value. Or S5

for automatic adjustment.

(5) When setting is complete, please press S4 [Save].
(6) To cancel the set data, simply press S6 [QUIT].

Internal Conduc t a nce Offset

This function can execute the internal resistance offset action of the machine.

(1) Press [Func].
(2) Please use [↑] or [↓] to select test parameter calibration, then select intern al resistance offset and

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press [Enter].

(3) The LCD screen will display as follows; skip directly to Step (6) for 8761.

(4) Press [Enter] to execute the internal resistance offset action (when you want to execute internal

resistance offset, please first insert the COND. OFFSET board).

(5) If PORT A (slot A) completed internal resistance offset, the LCD will display a message asking

whether to continue to offset the internal resistance of PORT B (slot B). If the machine you
purchased is 256PIN, it will offset the internal resistance all the way to PORT H in sequence.

(6) Change the offset board to the COND. offset board for PORT A (slot A) for execution.

Current Expand Box Calibration (Optional Fixture)

The current expand box calibration is used to adjust the Read (test value) closest to the current output
setting value.

(1) Press [Func]
(2) Please use [↑] or [↓] to select test parameter calibration, then select curren t expand box calibration

and press [Enter].

(3) The LCD screen will display as follows:

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(4) Press S1 [UP] or S2 [DOWN] to adjust the Read (test value) closest to the current output setting

value.

(5) When setting is complete, please press S4 [OK].
(6) To cancel the set data, simply press S6 [QUIT].

3.1.4 Pin Search

This function can display which is the current output pin.

(1) Press [Func].
(2) Please use [↑] or [↓] to select pin search and then press [Enter].
(3) Connect the probe to the Pin Search connection, and point the probe to the pin you want to find

out.

(4) The LCD screen will display as follows:

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(5) A20 in the figure represents the 20th pin of slot A.

3.1.5 Meter Mode

This function allows selecting of Conductance, R/L/C/D, Insulation, Withstanding, and use the meter
mode to perform continuous tests.

(1) Press [Func].
(2) Please use [↑] or [↓] to select meter mode and then press [Enter].
(3) Select the test item (Conductance, R/L/C/D, Insulation, Withstanding) and press [Enter].

The LCD screen will display as follows:

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3.1.5.1 Meter Mode - Conduction

This function allows performing of conduction test.

pin+: connected pin + selection.

pin-: connected pin - selection.

OFFS: Compensation value setting.

The LCD screen will display as follows:

3.1.5.2 Meter Mode - Component

This function allows performing of component (R: resistance L: inductance C: capacitance D: diode)
measurement.

FUNC: Selects component type (R: resistance L: inductance C: capacitance D: diode).

pin+: connected pin + selection.

pin-: connected pin - selection.

OFFS: Compensation value setting.

D-Para: Test current setting (1-20mA).

The LCD screen will display as follows:

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3.1.5.3 Meter Mode - Insulation

This function allows performing of insulation test (one to other); press the high voltage switch to send
high voltage and perform test.

※Beware high voltage: Press the high voltage switch and the Vdc shows ON, and the
H.V. s ignal on the panel turns on, which means that high voltage is bein g sent to the straight box ed output
terminal and the high voltage calibration terminal. During this time, there is the danger of electrification;
do not touch the high voltage sending terminal and the connected test DUT and fixture.

VOLT: Sets the DC test voltage.

Vdc: High voltage sending display.

Pin: Sets the test pin.

The LCD screen will display as follows:

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3.1.5.4 Meter Mode - Tolerance

This function allows performing of tolerance test (one to other); press the high voltage switch to send
high voltage and perform test.

※Beware high voltage: Press the high voltage switch and the Vac shows ON, and the H.V.
signal on the panel turns on, which means that high voltage is being sent to the straight boxed output
terminal and the high voltage calibration terminal. During this time, there is the danger of electrification.
Do not touch the high voltage sending terminal and the connected test DUT and fixture.

VOLT: Sets the DC test voltage.

Vac: High voltage sending display.

Pin: Sets the test pin.

The LCD screen will display as follows:

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3.1.6 Networking Fixture Setting

This function allows setting of the networking fixture (optional purchase) to perform internet
connection.

Protocol: Select TCPC or TCPS.

Sever IP: Server IP address.

Sever port: Server port.

Host Address: Host address.

Host mask: Host mask.

Host gateway: Host gateway (gateway).

Command delay (cmd, delay): Sets the item delay time.

Reset delay (Reset dly.): The delay time to restart after exiting settings.

The LCD screen will display as follows:

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3.2 System Setting (SYS)

System setting includes system configuration and test related action settings; their operation and function
descriptions are as follows:

(1) Press [Sys].
(2) The LCD screen will display as follows:

(3) Please use [↑] or [↓] to select the item needed and then press [Enter].
(4) Press [Exit] to exit when completed.

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3.2.1 Setting the Operating Environment

(1) The LCD screen will display as follows:

(2) Please use [↑] or [↓] to select the item needed.
(3) If needed, please press S1 or ←→ [PROG] to switch.
(4) Press [Exit] to exit when completed.

(1) Power on Self-Test

There is a total of two options: The default value is │On│.
On: Perform power on self-test.
Off: Do not perform power on self-test.

(2) Power Line Frequency

Sets the input power frequency (50Hz/60Hz).

(3) Key Stroke Sound

This tester allows enabling/disabling button sounds according to the needs. The default value is
│All Key│.
All Key: Sets it so that there are sounds when the buttons are pressed.
All Off: Sets it so that there are no sounds when the buttons are pressed.
Valid Key: When the button is valid, there is sound when the button is pressed.
Invalid Key: When the button is invalid, there is sound when the button is pressed.

(4) Key Lock

This machine provides key lock protection in order to prevent data from being modified randomly;

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please first go to system settings to change the system password and then go to key lock and
select | Lock | before this function can be used.

Note:

1. A password must be entered when the release key lock protection is
selected, so please read the user manual carefully.

(1) Press [Sys] and use [↑] or [↓] to select this item function.
(2) Press S1 or →← [PROG].
(3) The LCD screen will display as follows:

(5) Sound Volume

Press S1 or →← [PROG] to adjust the volume size.

(6) LCD Contrast

Press S1 or →← [PROG] to adjust the LCD brightness level.

(7) Inverse LCD

Press S1 or →← [PROG] to switch the LCD display method.

(8) Language

Press S1 or →← [PROG] to switch between Chinese or English display.

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3.2.2 Setting the Testing Environment

(1) The LCD screen will display as follows:

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(2) Please use [↑] or [↓] to select the item needed.
(3) If needed, please press S1 or ←→ [PROG] to switch.
(4) Press [Exit] to exit when completed.

(1) Tester ID

Allows assigning an ID for this tester.

(2) Test Alarm

This function provides alarms for test results; there are a total of 4 options that can be set according
to the needs.

ALL There is sound whether the result of the test DUT is good or failed.
OFF There is no sound whether the result of the test DUT is good or failed.
Good sound There is only sound when the result of the test DUT is good.
Poor sound There is only sound when the result of the test DUT failed.

(3) Consecutive Alarm

When errors occur during testing, a continuous alarm will sound.

On: Enables the consecutive alarm function.
Off: Disables the consecutive alarm function.

(4) Display Test Data

This function is used to set the display of the test statistical data and print format; there are a total of
three options.

ALL Display and print test data whether there are errors or not.
None Do not display and print test data whether there are errors or not.
Error step Display and print error step.

(5) Auto Print Data

Whether to print test data automatically. There is a total of two options and the default value is
│Key│.

Key: Auto print data mode is off and keys are used to control whether to print the test data.
Auto: Auto print data mode is on.

(6) Output Signal

Selects signal output mode. There are three modes. Continuous signal, pulse signal, and off.

Off: Remote control with no output.
Continuous signal: Remote control is continuous output until the next test.
Pulse signal: Remote control is pulse output of 100ms.

(7) Step Trigger

Selects the step trigger mode. There are three modes. Key, auto, external.

(8) Test File

Choose whether to use a single file for testing or step file testing.

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Single file: Current file test (which is the {Current file} displayed on the main screen).
Step file: Step file selection test.
Auto: Use step file test when there are step files, and use current file test if there are none.

(9) Step Test Fail

Processing method to use when the step file test failed. Available selections include return to first
step, repeat current step, stop test or complete all tests.

(10) Step Disp all

Whether to display the steps when using step file test.

(11) Fail Stop

Lock the keys when test failed. Test signal must be sent remotely in order to unlock.

(12) Test Statistic

Whether the keep statistics of the test results.

(13) Test Data Upload

Function to select whether to upload the test results.

Off: Do not upload the test results.
Save on USB: Generates a test result file on the USB flash drive.
Computer connection: Transmits the test result to the computer terminal through the RS232

interface.

(14) Connect. Det.

Tests the step files one by one and ends the test when PASS is matched. The test result is PASS. If
the test results of all step files failed, the test result is FAIL. When this function is enabled, the
function becomes invalid when "[9] Step test fail”

(15) Mul. DUT OPT.

The number of test DUTs selected when using test multiple DUTs simultaneously and binary
function, which is 4 and 14 respectively.

(16) SF. Stat Mode

Default is mode 1. Mode 1: Calculate statistical results when a single file test ends. Mode 2: When
a single file test ended, wait for the test DUT to eject (empty pin status) and then calculate the
statistical results.

(17) Set Pulse Time

The time to maintain the output pulse signal.

(18) Mul. DUT OUTSGL

FAIL: Output when the test result is FAIL. PASS: Output when the test result is PASS.

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(19) Seq. Result Mode

Alone: Display and output test result for each step. Combined: Unified display of test results.

(20) PC Link Cmd

The connection program used (Microtest official) must be “On”.

(21) Test Counter

A prompt will appear when the number of tests has been reached when enabled; which means that it
has reached the number of times set.

0: Off 1~999999: On. Default is 0.

(22) Cond. Offset Range

Sets the cable offset range edited for the conductance; 1~45. Default is 10.

(23) R Offs. Delay

R offset delay time setting. 3000us~60000us. Default is 3000us.

(24) AF Delay Time

Frame current output delay time setting. 1ms~1000ms. Default is 5ms.

(25) Default Setting

All options of the test environment setting are reset to the factory default values.

(26) OS Check Times

OS error check times. 1-1000. Default is 3.

(27) TC OS Read

Applicable to Type C models; read delay time setting. Default is 70.

(28) Cond AVG Times

Set the average conduction test times. Default is 4.

(29) Seq. Stat.

Sequential statistics mode: General, multiple DUTs. Default is general.

3.2.3 Set System Time

This function can adjust the system’s year/month/day/hour/minute/second.
(1) Press [Sys].
(2) Use [↑] or [↓] to select this function.

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(3) The LCD screen will display as follows:

(4) The time format is MM/DD/YY; please press S1 [Setting] to save when input is complete.
(5) Press [Exit] to exit.

Note:

1. Hour is in 24 hour format.

3.2.4 Change System Password

This tester provides key lock protection in order to prevent data from being modified randomly.

(1) Press [Sys].
(2) Please use [↑] or [↓] to select this item and then press [Enter].
(3) The LCD screen will display as follows:

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(4) If you are setting the password for the first time, enter the new password directly. If you have

previously set a password, then you must first enter the original password and press [Enter].

(5) Then enter the new password again and press [Enter]; the screen will display {Successfully set} at

this time.

(6) Once the new password was successfully set, it will automatically return to the function menu
(7) To change the password, please repeat the setting steps described above.

3.3 Print Function Menu

This tester provides direct printer output, making it easy for you to print out the data needed; its operation
and function descriptions are as follows:

(1) Select the data or screen needed.
(2) Simply press [Print].

3.4 Learning Short Circuit Setting and Edit

The short circuit setting of this machine is set by learning and adding changes, which means saving the
test cable connection conditions in the system memory and the system will display the test results on the
LCD.

(1) When no short circuit pin is learned for the test DUT, the LCD screen will display as follows:

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(2) Enter circuit edit and the LCD screen will display as follows:

(3) Press add network, add the network 001 short circuit pin A01, and the LCD screen will display as

follows:

(4) Press add pin and use the other function button (slot A) and the number button (02) to add the A02 pin;

the LCD screen will display as follows:

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(5) Press check network (use the left and right buttons to move to the Net section) to check that there are

no errors; the LCD screen will display as follows:

(6) Press arrange network and then the exit button to complete network editing; the LCD screen will

display as follows:

(7) When check failed resulting in the network cannot be arranged and the network editing process cannot

be completed, press the exit button after the prompt appears on the screen to return to the network
editing screen; the LCD screen will display as follows:

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3.5 File Management (File)

For section 3.5 File Management (File), please refer to Chapter 4 Comprehensive testing mode, 4.3 File
Management for details.

3.6 Statistical Data (Statistic)

This function allows viewing of the test result statistical data, including: total number of tests, number of
passes, number of fails and cause of failure analysis, which searches for the number of fails in each item
category.

(1) Press [Stat].
(2) The LCD screen will display as follows:

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(3) Press S1 [QTY. RATE] to display the statistical data using percentages.
(4) The LCD screen will display as follows:

(5) Press S6 [CLR.] to clear all current statistical data.
(6) Press [Exit] to exit when completed.

3.7 Mode Setting (Mode)

Press [O/S] and then press S6 [O/S EDIT] to enter test mode setting.

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Applicable to general models:

Applicable to Type C models:

(1) O/S Threshold: Available options include 2K, 5K, 10K, 20K and 50K; other functions are used to

determine the short ci rcu i t val ue. If it is set as 2 K, cables wi th resi st ance u nd er 2K are co ns id e red t o
be short-circuited and with resistance above 2K are considered to be open circuit.

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(2) Maximum allowable capacity (MAX. Capacitance): Can be set between 0.05u~1u. This value

should be set to a great number when the cables are longer in order to have stable tests.

(3) Short circuit pin determination (IDENTIFY O/S ENDS): Determine which pins are open circuit

or short circuit.

(4) Unilateral test sensitivity (SINGLE SIDE SENDS.): The lower the value the more sensitive it is.

0~999.

(5) Instant short circuit test time (INTER. O/S Time): 0~60s.
(6) Instant short circuit test maximum pin (INTER. O/S Scan): Determined according to model.
(7) TYPE C voltage (TYPE C Volt.): TYPE C test voltage 0.02v~4v.
(8) TYPE C fixture (TYPE C Fix.): Uses standard fixture test.

2. Cable type: {Normal}

Press [Learn], the LCD screen will display as follows:

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When performing cable test, press [TEST] and the LCD screen will display as follows:

From the LCD display screen, we can find out the total number of tests and the number of passes and
fails.

(2) When test mode is being set, set the cable type as {SINGLE STEP}.

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Press [Learn], the LCD screen will display as follows:

Use the automatic pin search probe to specify the short circuit pin to test; example is as follows:
When using the pin search probe on the panel, touch the relative position (A01) specified by the cable and
the LCD will display that pin.

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Place the probe sequentially on the pins specified by the cables (A03, A05, A07) and also press S1
[READ]; press S4 [Finish] when completed.

When performing cable test, press [TEST] and the LCD screen will display as follows:

Please use the automatic pin search probe and place it on A01; the LCD screen will display as follows:

45

The automatic pin probe must be placed on A03, A05, and A07 sequentially in order to complete the
cable test action.

Since we initially have 4 steps preset, so for the test of each test DUT, steps 1 to 4 of the step test must
be completed successfully in order for it to pass. A maximum of 128 test steps can be set.

When test mode is being set, set the cable type as {signal side}.

Press [Learn] when there is no test DUT, the LCD screen will display as follows:

46

The value displayed at the right of the screen is the unilateral test sensitivity; S5 unilateral offset can be
pressed and the value will change to zero after learning. S4 clears the unilateral offset value.

Press [Learn] after inserting the test DUT, the LCD screen will display as follows:

When test mode is being set, enter the value needed for the single side sensitivity.

P.S Use 80~90% of the minimum value learned as the setting value.

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When performing cable test, press [TEST] and the LCD screen will display as follows:

From the LCD display screen, we can find out the total number of tests and the number of passes and
fails.

(3) Maximum capacitance: Can be set between 0.05u~1u; this value should be set to a great number

when the cables are longer in order to have stable tests.

(4) Test start method:

Automatic Starts test after test DUT is inserted.
Manual Starts test after the test DUT is inserted and the “Test” button is pressed.
Continuous Continuous tests after the “Test” button is pressed.

(5) Automatic test insert delay: This is only effective when Automatic is selected as the test start

method; its function is to wait a few seconds before starting the test after the test DUT is inserted.

(6) Number of continuous tests: This is only effective when Continuous is selected as the test start

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method; it allows setting of the number of times to test.

(7) When there is error during test: If errors occur during test, there are three options displayed at all

times: {Stop test}, {Do not test high voltage} and {Finish all tests}.

(8) Short circuit pin determination: This is able to display the index display for the A Port or B Port

short circuit.

(9) Unilateral test sensitivity: This acts when the cable type is set as unilateral; it is considered short

circuit when the test value is higher than the value set here.

(10) Instant short circuit test time: Unlimited when set to 0; the test will only stop when the test DUT is

removed. When a value is set, it is the number of seconds to test.

3.7.1 Multiple Simultaneous Test DUT (MiltiDut)

First learn the test DUT pin; press mode setting.

Select Test M. Dut

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Select Yes, set the start and end of the test DUT according to the pin learned; a maximum of 4 tests can
be selected and the start and end pins of the test DUT can be set. (P.S There must be no other test DUT
at the start and end of the test DUT).

Press [TEST] when setting is completed.

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3.7.2 Test Item (Item)

Press Mode.

Press Test item.

(1) Please use [↑] or [↓] to move to the item you want to set.
(2) Press S1 [PROG] to switch whether to execute test for the selected item.

Chapter 4 Comprehensive Test Mode

Test mode uses programmed design functions, to perform simultaneous and automatic tests according to
the different test conditions set for different test items, in order to satisfy different needs and achieve
optimal efficiency; it can be divided into:

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 Test condition setting.
 Comprehensive test implementation.
 File management.

Detailed descriptions are as follows:

4.1 Test Condition Setting

This part refers to the setting of some control standards and corresponding test conditions for the test
DUT (DUT), including O/S / Cond / R / C / HIPOT / Diode settings; its contents mainly includes.

● The test signals (frequency, voltage size and current etc.) of each test item (Parameter).

● Control standard, specification control standard value, error ratio.

4.1.1 Test Condition Setting O/S NET (OPEN/SHORT)

(1) Press [O/S].
(2) The LCD screen will display as follows:

(3) The short circuit table comes from learning.
(4) Press [Exit] to exit when completed.

4.1.2 Conductance Test Edit (Conductance)

(1) Press [Cond].

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(2) T he LCD screen will display as follows:
(3) Please use [↑] or [↓] to select the item you want to set.

(1) Maximum conductance value (Max. Conductance): Please use the number buttons to enter a

value according to your needs as the upper limit of the cable conductance.

(2) Minimum conductance value ((Min. Conductance): Please use the number buttons to enter a

value according to your needs as the lower limit of the cable conductance.

(3) Conductance offset(Cond. Offset): Resistance value can be entered to increase or decrease the

resistance of the fixture.

(4) Conductance mode: Use S1 [PROG] to switch between serials, radiation, or composite.
(5) Intermittence limit: Resistance value can be entered to be used as the basis to determine the test

result.

(6) Intermittence time: A time value can be entered to be used as the continuation time for the test.
(7) Conductance Net (Cond. Net): Allows importing of the O/S learned into component edit.

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Press S3 [Cond Net] to enter conduction edit:

Press S1 [SET] the item needed and then press S4 [OK]:

Import to component edit:

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(8) Cable off: After inserting the offset fixture, press S5 [Cable offset] to perform offset, and the cable

offset located at the bottom left will display: Yes.

(9) Clear offset: Press S6 [Clear offset] to clear the previous conduction value, and the cable offset

located at the bottom left will display: None.

Note:

1. Short circuit according to the minimum resistance value of the test DUT’s
NET for offset fixture.

4.1.3 R/C/D Component Setting Edit (Resistance)

(1) Press the [R/C/D] button and the screen will display as follows:

(2) After entering the name, move the cursor to line T and then use S1 S2 S3 to select test capacitance,

resistance, diode and voltage.

(3) Set the + - pins; the pins can be entered manually or use automatic pin search (to use automatic

pin search, the probe must be inserted to the pin search located at the front panel and then touch
the ABCDEFG Port pins); the LCD screen will display as follows:

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(4) After the cursor moves to the standard value line, enter the actual test value or use S1 [Learn] and

S2 [Learn all] function; the LCD screen will display as follows:

(5) When the component is resistance or capacitance, press S5 [CLR. OFFS] to offset; the LCD

screen will display as follows:

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(6) Press [Enter] to perform the offset action.
(7) Press S6 [All SAME] to clear the data used for resistance or capacitance offset.
(8) When the component is resistance, press SHIFT+S5 [CLR. OFFS] to display the data for

resistance offset; the LCD screen will display as follows:

(9) When the component is diode or current leakage, press S3 [SET PARA] to perform parameter

setting; the LCD screen will display as follows:

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(9.1) For diode parameter settings, the test mode can be switched and the test current value can be
entered; the LCD screen will display as follows:

(10) Item descriptions are as follows:

 Name Please enter the name for the resistance test group set.
 +Pin (Positive pin) Positive pin setting; please enter the pin selected.
 − Pin (negative pin) Negative pin setting; please enter the pin selected.
 Standard value Standard value setting; please enter the value needed.
 Error % Error value setting; please enter the setting value according to your needs, it

ranges from 0-9999.9. Press S6 [SAME] to set all the error % to the same
value.

– >= STD Press S1 [Greater than] to set the error % as greater than or equal to the standard

value.

– <= STD Press S2 [Less than] to set the error % as less than or equal to the standard value.

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4.1.4 High Voltage Setting Edit (HV)

This function is the setting for DC insulation, test voltage for AC tolerance, frequency, time, specification,
and other items.

(1) Press [HV].
(2) The LCD screen will display as follows:

"

(1) Please use the direction button sot move to the item you want to set.
(2) Enter your specification control standard value.
(3) Descriptions of the insulation and tolerance items are as follows:

(1) Test Voltage
Sets the test voltage value for DC insulation and AC tolerance; the DC voltage is 50V~1000V (N/NA)
50V~1500V (FA) and the AC voltage is 100V~700V (NA), 100~1000 (FA).

(2) Frequency
Sets the test frequency; only the AC part can be set (50/60Hz), DC insulation: switches between tolerance

and insulation, which is switching the test specification type. The tolerance test specification is uA and
the insulation test specification is MΩ.

(3) Test Time
Sets the continuation time for the DC insulation and AC tolerance test voltage; the continuation time can
be set between 0.01Sec~60Sec. All ground and quick binary are shared; one to other is independent.

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(4) Test Specification

Sets the test specification of the DC insulation and AC tolerance test; the DC insulation specification can

be set between 0.1MΩ~1000MΩ, 0.1uA~1000uA.

※When the setting is set as 5MΩ or below 5uA, the maximum test voltage is 650V and the AC tolerance

specification can be set between 0.01mA~5mA.

(5) Offset Value

AC tolerance test offset.

(6) All-Ground
Ground pin must be set for this mode to perform insulation test for non-grounded cable to specified
grounded cable; its advantage is that the test speed is fast, but its disadvantage is that insulation test is not
performed between non-grounded cables.

All ground test method

(7) Binary

This mode is similar to quick categorization; if there are 8 test pins test DUT A B C D E F G H, when test
is performed for each cable or pin, it has to be tested 7 times sequentially in order to determine whether
the test DUT passed. But if the quick test method is used, the first time A B C D and E F G H are divided
into two groups for testing, and the second time A B E F and C D G H are divided into two groups for
testing, and the third time A C E G and B D F H are divided into two groups for testing, then the test only
needs to be performed three times to confirm whether the test DUT passed. Therefore, if the test DUT has
128 pins, and if test is per formed fo r every cabl e or pin , the test has to be performed 127 times; with the
quick test method, the test only has to run 8 times. However, the disadvantage is that it cannot find out
which are the error pins and the cable segment resistance will be slightly lower than the actual value
because of the cable segments were tested in parallel.

(7-1) Binary Range (Open 1)

This mode is similar to the quick binary categorization method; it allows setting of the test DUT quantity
and range (same as multiple DUT simultaneous test setting).

Quick binary test method

(8) All Nets

This is the most fundamental test method for high voltage insulation test. High voltage is connected to
the test pin A and the other pins are grounded to observe its current leakage or insulation value, and
then high voltage is connected to test pin B and the other pins are grounded to observe its current

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leakage or insulation value and so on. High voltage is connected to each pin while other pins are
grounded to observe their current leakage or insulation value. This way it can confirm that all the test
pin high voltage insulation test have no problems, and the number of tests for this method is N-1 times.
This test method is more accurate and it can find the insulation and current leakage value for each pin;
its disadvantage is that it is slower.

One to other test method

(9) Ground Pin

Ground pin set.

(10) Test Rate

Slow: T e st method that uses stable test value as top priority
Regular: Test method that finds a balance between stable test value and test speed
Quick: Test method that saves changing time under known test specification conditions

The following requirements must be followed for quick test:

1. Quick test is a test method designed to be used specifically when the insulation value of the test

DUTs are within fixed range and saves time by not jumping sections, and has the goal of gaining
highest capacity.

2. Each 1V can only test 1M ohm 1uA is a very small current.

3. Set the correct test specifications; to test 100M test specifications, the voltage must be set to 100M

ohm.

4. Make suitable adjustments for the test time according to the test DUT.

(11) Max. Pin

Sets the maximum number of pins for the quick binary test.
Select S6 [PREVIOUS] and the LCD screen will display as follows:

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(1) V ramp Time

Sets the voltage increase time for the DC insulation and AC tolerance test. The increase time for the
voltage of the DC insulation test can be set between 0~64 phases, the smaller the setting value the faster it
increases.

(2) Arc Detection

Sets whether to enable arc detection.

(3) Single Node

Sets whether to test for empty pins; it is mainly used to test tests with no circuits.

(4) DC arc Sensitivity

Sets the DC arc detection sensitivity 1-8; the lower the value the more sensitive it is, the higher the value
the less sensitive it is.

(5) AC arc Sensitivity

Sets the AC arc detection sensitivity 1-8; the lower the value the more sensitive it is, the higher the value
the less sensitive it is.

(6) A (B, C, D, E, F, G, H) PORT Final Pin
Sets the final pin of A (B, C, D, E, F, G, H) PORT.

Binary Range Number

1-14, used with the DUT quantity option in test environment setting.

Binary Range

Sets the range of the DUT.

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4.2 Comprehensive Test Implementation

After the settings above are completed, comprehensive test implementation can be performed. Since
the operating proced ures are different, it can be divided into two t ypes: Real time test and Existed test;
individual descriptions are as follows:

4.2.1 Real Time Test

This part sets the test conditions saved in the main memory as the test condition and performs test to
test DUTs in real time. It is the most commonly used test method. Its step descriptions are as follows:

(1) First check whether the test condition settings are correct.
(2) Press [Mode] to display the test mode setting screen.
(3) Check and confirm whether the test mode settings are correct, and change according to your

needs.

(4) After confirming there are no errors, press [EXIT] to exit and return to the main screen.
(5) Press [TEST] to start testing.
(6) When the test is complete or if the test needs to be interrupted, please press [EXIT] to exit.

4.2.2 Existed Test

You can load files saved in the memory to the main memory to perform testing; instructions are as
follows:

(1) Press [File].
(2) Please use [↑] or [↓] to move the cursor to select the file name to load.
(3) After confirming, press [Enter]; the tester will start loading the selected file into the main memory.
(4) At this time the LCD screen will return to the main screen and the name of the file you selected

will be displayed for current file; file loading has been completed at this time.

(5) Please press [EXIT] to exit and return to the main screen.

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(6) Press [Mode] to display the test mode setting screen.
(7) Check and confirm whether the test mode settings are correct, and change according to your

needs.

(8) After confirming there are no errors, press [EXIT] to exit and return to the main screen.
(9) Press [TEST] to start testing.
(10) When the test is complete or if the test needs to be interrupted, please press [EXIT] to exit.

4.3 File Management

You can execute select old file/delete old file/file sorting actions to make it easier to manage and use
the files; instructions are as follows:

4.3.1 Select File

Select file loads files saved on the permanent memory to the main memory so that they can be used for
other purposes, including testing, editing, and printing etc. Instructions are as follows:

(1) Press [File].
(2) The LCD screen will display as follows:

(3) Please use [↑] or [↓] to move the cursor to select the file name to load.
(4) Press [Enter] to execute the load file action.
(5) The tester will start loading the selected file into the main memory.

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(6) At this time the LCD screen will return to the main screen and the name of the file you selected

will be displayed for current file; file loading has been completed at this time.

4.3.2 Step Setting

When you need to perform multiple test steps to a test DUT, you can set the test steps that need to be
performed using step test, to simplify your test process and reduce your test time.

(1) Press [File] and then press S1 [Step setting].
(2) The LCD screen will display as follows:

(3) You can press S1 [EDIT STEP]; the LCD screen will display as follows:

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(4) Use [↑] or [↓] to move the cursor to select and set the test steps needed to be performed to the test

DUT.

(5) For example: We selected the three files EX1, EX2 and EX3.
(6) Use [↑] or [↓] to move the cursor to EX1, and then press S3 [SET].
(7) The LCD screen will display as follows:

And then use [↑] or [↓] to move the cursor to EX2, and then press S3 [SET].

(8) The LCD screen will display as follows:

(9) Continue to use [↑] or [↓] to move the cursor to EX3, and then press S3 [SET].
(10) The LCD screen will display as follows:

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(11) Please press S4 [Finish] and the LCD screen will display as follows:

(12) This way step test setting is complete; S2 [LEARN] can also be used for setting.
(13) For example: Put the test DUT in place and press S2 [LEARN]; the LCD screen will display as

follows:

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(14) Press S1 [LEARN] and the 1st step setting will be generated; the LCD screen will display as

follows:

(15) And so on, we can set the 1st, 2nd... step. Assume we have set a total of 5 test steps, once setting

is completed, press S3 [OK] and the LCD screen will display as follows:

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(16) This also completes the setting for step test.
(17) Press S3 [STEP TEST] or [TEST] and the LCD screen will display as follows:

(18) Performs the 1st test step, the LCD screen will display as follows:

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(19) First step PASS, the LCD screen will display {Wait for test step 2}.
(20) And so on until all 5 steps set are completed, the LCD screen will display as follows:

(21) This completes the step test.

Note:

1. When each test step is completed, the machine will scan for short circuits
(O/S). The machine will only perform the next test step after the short circuit
(O/S) status changes.

2. If you want the machine to perform the next test step without waiting for
the short circuit (O/S) status change, please set the [test start method] in the
file test mode of that test step as Continuous.

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4.3.3 Create New File

The function to create a new file in the permanent memory; its instructions are as follows:

(1) Press [File].
(2) Press S2 [NEW] to perform the create new file action.
(3) The LCD screen will display as follows:

(4) Enter file name.
(5) Confirm the file name you want to create and press [Enter] to complete the create new file action.

4.3.4 Upload File

Upload file uploads the selected single file to the USB flash drive; its instructions are as follows:

(1) Press [File] and use [↑] or [↓] to move the cursor to select the file name to upload, and insert the

USB flash drive into the front panel.

(2) Press S3 [UPLOAD] to execute the upload file action.
(3) The LCD screen will display as follows:

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(4) Confirm the file name you want to upload and press [Enter] to complete the upload file action.

4.3.5 Upload All

Upload all uploads all the files to the USB flash drive; its instructions are as follows:

(1) Press [File].
(2) Press S4 [UP ALL] to execute the upload all files action.
(3) The LCD screen will display as follows:

4.3.6 Delete File

Delete file permanently deletes files saved on the permanent memory in order to avoid using up
precious permanent memory; its instructions are as follows:

(1) Press [File] and use [↑] or [↓] to move the cursor to select the file name to delete.

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(2) Press S5 [DEL.] to execute the delete file action. [SHIFT] + S5 S5 [DEL.] deletes all files.
(3) The LCD screen will display as follows:

(4) Confirm the file name you want to delete and press [Enter] to complete the delete file action.

4.3.7 File Sorting

File sorting sorts the files according to four rules (); its instructions are as follows:
(1) Press [File].

(2) Press S6 [SORT] to execute the file sort action.
(3) The LCD screen will display as follows:

1. Unsorted files.

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2. Press S6 [SORT] to execute the file sort action.

3. File order after sorting.

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4.3.8 Import File

Import file imports files on the USB flash drive to the tester; its instructions are as follows:
(1) Press [SHIFT] + [File].

(2) The LCD screen will display as follows:

1. Enters the import file screen.

2. Press S1 [PROG] or S4 [SEL ALL] to select the file to import; on the other hand you can press S5

[CANC EALL] to cancel the selected files.

3. Press S1 [SET STEP] to import the file currently selected (highlighted) using the up and down

buttons; the file will be imported whether it was selected or not. Press S3 [UPLOAD] to import
the file selected using S1 [SET STEP] or S4 [UP ALL].

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76

APPENDIX A Cable Wiring Configuration

1. RS-232C CABLE

Baud Rate：115200bps
Character Length：8bits
Stop Bit：One Bit
Parity：Non-Parity
Character：ASCII Character

Function

8751/8761

Controller

RxD Pin2 Pin3
TxD Pin3 Pin2

GND

Pin5

Pin5

2. PRINTER CABLE

25-PIN

connector (male)

36-

PIN connector

(male)

Signal

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

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8751/8761 REMOTE

15-PIN connector

1 CTL0 9 EGND
2 CTL1 10 SW1
3 CTL2 11 SW2

4

CTL3

12

RESET

5 CTL4 13 +5D
6 CTL5 14 +12D
7 CTL6 15 EGND
8 CTL7

EGND + SW1 Short circuit means test can be started (same as pressing [TEST] on

the panel).

EGND+ SW2 Short circuit means exit (same as pressing [Exit] on the panel).

RESET+ EGND Short circuit means Reset (same as pressing [RESET] on the

panel).

EGND and equipment GND Uses insulation isolation design for connection with different zero

level potential equipment.

CTL[7:0] Open collector output: each pin can provide 50Ma sink current.

The resistance must be increased externally to provide high
potential such as 24V, CTL 0, CTL 2, CTL 3 and it is the output
signal under test status. Definitions are as follows:

Single DUT and step test

CTL0

Start test

CTL1 High voltage testing
CTL2 “PASS” status
CTL3 ”FAIL” status

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Multiple test DUT simultaneous test signal
Multiple DUT

CTL0 Start test

CTL1

High voltage testing

CTL2 Total PASS status

CTL3

Total FAIL

CTL4 DUT 1 FAIL status

CTL5

DUT 2 FAIL status

CTL6 DUT 3 FAIL status

CTL7

DUT 4 FAIL status

※+5D and +12D output current must not exceed 100mA.

CTL0 ~ CTL1 internal circuit diagram is as shown in the figure below.

79

APPENDIX B Test Range and Functions

Item Symbol Test range Error range Minimum test

voltage

Resistance

R

0-1Ω

±10%

R

>1Ω && <10Ω

±5%

R

>10Ω && <100Ω

±2%

R

>100 && <1KΩ

±2%

R

>1KΩ && 10KΩ

±2%

R

>10KΩ && <100KΩ

±2%

R

>100KΩ && 1MΩ

±2%

R

>1MΩ && <20MΩ

±2%

Capacitance

C

0~10pF

±20%

C >10 pF && <20pF ±10%

C

>20Pf && <3.0uF

±5%

Conduction COND

0.1Ω ~ 50.0Ω

±1%

Insulation

resistance

IS

1MΩ ~ 1.99MΩ

±10%

50V

IS

2.00 MΩ ~ 4.99 MΩ

±10% 50V

IS

5.00 MΩ ~ 9.99 MΩ

±10%

50V

IS

10.00 MΩ ~ 19.99 MΩ

±10% 50V

IS

20.00 MΩ ~ 49.99 MΩ

±10%

50V

IS

50.00 MΩ ~ 99.99 MΩ

±10% 100V

IS

100.0 MΩ ~ 199.9 MΩ

±10%

200V

IS

200.0 MΩ ~ 499.9MΩ

±20% 500V

IS

500 MΩ ~ 1000.0MΩ

±20%

1000V

Diode D 0.6 ~ 6.8V ±25%

>=7.0V

---

Short circuit
determination
value

O/S

2KΩ ~ 100KΩ

±10%

Intermittence test

20Ω ~ 2KΩ

±10%

Unilateral test 1pF~999pF ±20%

HIPOT current

leakage

0.02mA~0.0499mA

±50%

0.05mA~0.099mA ±20%

0.1mA~0.199mA

±20%

80

0.2mA~0.499mA ±20%

0.5mA~4.99mA

±10%

APPENDIX C Technical Specifications

Advanced functions

Programmable continuous testing

Automatic pin search

Self-diagnosis

Self-calibration offset

Basic accuracy

±5%

Test scan mode Switchable automatic/short circuit scan

Test signal source

Low voltage test signal

Rated output
5Vdc

±5% accuracy

DC insulation/AC tolerance

test range
8751/8761-FA 50~1500VDC / 100~1000VAC

8751/8761-NA

50~1000VDC / 100~700VAC

8751/8761-NAC 50~1000VDC / 100~700VAC

8751/8761-N
50~1000VDC / -----------------

50V Resolution

High voltage output accuracy

±5% accuracy

Display/sound device 320x240 resolution graphic LCD display

6 digit digital display digit

Pass/Fail LED red green indicat or/ scre en
display/sound

Test pin

A maximum of 256 independent test pins

64/128/256 pin selection

High voltage calibration positive and negative

output
Automatic pin search terminal

Control panel

System/quick/edit/function button group

Interface RS-232 communication port (only for future

connection software use)

Printer port

81

Remote control port
USB port (test result/test setting file/system update)

Memory device Built-in 2048KB SRAM

A maximum of 250 sets of test setting files can be
saved

Built-in CR2032 battery

Power supply

115/230 Vac switchable voltage input±10%

60/50Hz

APPENDIX D Version

2017/05/24 V1.0 Original issue