Tonghui TH2689 User manual

OPERATION MANUAL
TH2689/TH2689A
Capacitor Leakage Current/IR Meter

TH2689/89A Operation manual
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Content
CHAPTER 1 INTRODUCTION......................................................................................2-1
1.1 INTRODUCTION ...............................................................................................................2-1
1.2 CONDITION .....................................................................................................................2-1
1.2.1 POWER a...................................................................................................................2-1
1.2.2 ENVIRONMENTAL TEMPERATURE AND HUMIDITY ..............................................................2-1
1.2.3 WARM-UP....................................................................................................................2-2
1.2.4 CAUTION !................................................................................................................2-2
5.1 DIMENSION AND WEIGHT..................................................................................................5-2
5.2 SAFETY..........................................................................................................................5-2
5.2.1 INSULATED RESISTANCE................................................................................................5-2
5.2.2 INSULATION INTENSITY..................................................................................................5-3
5.2.3 LEAKAGE CURRENT ......................................................................................................5-3
5.3 ELECTROMAGNETIC COMPATIBILITY..................................................................................5-3
CHAPTER 2 INSTRUCTION OF FRONT PANEL.................................................................... 4
2.1 INSTRUCTION OF FRONT PANEL.............................................................................................. 4
2.2 INSTRUCTION OF REAR PANEL................................................................................................ 5
CHAPTER 3 OPERATION....................................................................................................... 7
3.1 CONNECTION OF （DUT）................................................................................................... 7
3.2 OPERATION.......................................................................................................................... 8
3.2.1 MAIN INDEX.................................................................................................................... 8
3.2.2 SEQ.TEST...................................................................................................................... 9
3.2.3 SINGLE STEP MANUAL TEST PAGE ..................................................................................... 14
3.2.4 CONTINUES AUTO TEST PAGE ........................................................................................... 16
3.2.5 NULL TEST PAGE.............................................................................................................. 17
3.2.6ALUMINIUM FOIL WITHSTANDING VOLTAGE TEST PAGE......................................................... 18
3.2.7 COMPARE FUNCTION SETTING PAGE.................................................................................. 23
3.2.8 FILE STORAGE PAGE ........................................................................................................ 24
3.2.9 SYSTEM CONFIGURATION PAGE ........................................................................................ 26
CHAPTER 4 TEST PERFORMANCE .................................................................................... 38
4.1（L.C./I.R.TEST）............................................................................................................ 38
4.1.1 PARAMETER.................................................................................................................... 38
4.1.2TEST SIGNAL ................................................................................................................... 38
4.1.3 BASIC ACCURACY ............................................................................................................ 39
4.1.4 DISPLAY RANGE............................................................................................................... 39
4.1.5TEST TIME....................................................................................................................... 39
4.1.6 （NULL）.................................................................................................................... 39

TH2689/89A Operation manual
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4.2（W.V. TEST）.................................................................................................................. 39
4.2.1TEST PARAMETER............................................................................................................ 39
4.2.2TEST SIGNAL ................................................................................................................... 39
4.2.3 DISPLAY RANGE............................................................................................................. 39
CHAPTER 5 REMOTE CONTROL ........................................................................................ 41
5.1 RS232C INTERFACE INTRODUCTION ................................................................................... 41
5.1.1 RS232C CONNECTION..................................................................................................... 41
5.1.2 COMMUNICATION WITH A COMPUTER................................................................................. 43
5.2 GPIB................................................................................................................................. 43
5.2.1 GPIB BUS....................................................................................................................... 43
5.2.2 GPIB FUNCTION.............................................................................................................. 45
5.2.3 GPIBADDRESSING.......................................................................................................... 46
CHAPTER 6 COMMAND REFERENCE................................................................................ 47
6.1 SHARING COMMAND INSTRUCTION....................................................................................... 47
6.2 SCPI ORDER STRUCTURE................................................................................................... 48
6.2.1 ORDER STRUCTURE INSTRUCTION .................................................................................... 49
6.3 ORDER SYNTAX .................................................................................................................. 50
6.4 SCPI ORDER INSTRUCTION ................................................................................................. 51
6.4.1ABORT ORDER SYSTEM................................................................................................... 51
6.4.2 CALCULATE ORDER SYSTEM............................................................................................ 51
6.4.3 DISPLAY ORDER SYSTEM................................................................................................. 53
6.4.4 LCTEST ORDER SYSTEM.................................................................................................. 53
6.4.5 WVTEST ORDER SYSTEM................................................................................................. 55
6.4.6TRIGGER ORDER SYSTEM................................................................................................ 56
6.4.7 SYSTEM ORDER SYSTEM................................................................................................. 57
6.5 ERROR INFORMATION.......................................................................................................... 58
CHAPTER 7 SORTING INTERFACE INSTRUCTION ........................................................... 59
7.1 HANDLER INTERFACE ....................................................................................................... 59
7.2THE JUMPER SET ON HANDLER BOARD.............................................................................. 60
7.3 HANDLER INTERFACE SIGNAL DIAGRAM.............................................................................. 61

TH2689/89A Operation manual
2-1
Chapter 1 Introduction
Thanks very much for choosing and using our product. If you have any questions after
reviewing this manual, please contact your local representative or call directly to our application
engineers for further consultation.
1.1 Introduction
Basic specification：（more in Chapter 4）
zTest parameter：
Leakage current test：L.C.（Leakage Current），I.R.（Isolated Resistance）
Withstanding voltage test：Tr，Vt
zBasic accuracy：
L.C.---------------±（0.3%+0.05uA）
zTest range：
L.C.---------------0.000 uA～20.00 mA
zTest voltage/charging current：
Test voltage LEV = 1.0V ～100V，resolution 0.1V
=101V ～800V，resolurion 1V；±（0.5%+0.2V）[TH2689]
=101V ～500V，resolution 1V；±（0.5%+0.2V）[TH2689A]
Charging current LEV ≤100V：0.5 mA ～500 mA，resolution 0.5 mA
＞100V：0.5 mA ～I
MAX，resolution 0.5 mA；±（3%+0.05mA）
zCorrection ：Null
zIEEE-488 interface (optional): this interface provides convenience for instrument
and computer or other instruments to make a automatical test system.
The command of RS-232C and IEEE-488 interface is written by SCPI format.
zHANDLER interface: the instrument is synchronized with the machinery processing
instrument in automatical test system, and the result is output to the machinery processing
instrument.
1.2Condition
1.2.1 Power a
Voltage: 220V(1±10%)
Frequency: 50Hz/60Hz(1±5%)
Consumption: <120VA
1.2.2 Environmental temperature and humidity
Normal working temperature: 0°C～40°C，humidity: < 90%RH

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Reference working temperature: 20°C±8°C，humidity: < 80%RH
Transportation temperature：0°C～55°C，humidity：≤93%RH
1.2.3 Warm-up
Warm up time：≥20 min.
1.2.4 Caution !
1. Please do not operate the instrument in the places where is vibrative, dusty, under
direct sunlight, or where there is corrosive air.
2Although the instrument has been specially designed for reducing the noise cased by
ac power, a place with low noise is still recommended. If this cannot be arranged, please make
sure to use power filter for the instrument.
3Please store the instrument in the place where temperature is between 5 and 40 ,℃℃
humidity is less then 85% RH. If the instrument will not be put in use for a time, please have it
properly packed with its original box or a similar box for storing.
4TH2816B has the cooling fan on the rear panel and cooling holes on both sides.
High temperature inside will decrease the measurement accuracy, so sufficient space must be
kept around the TH2816B to avoid obstructing the air flow of the cooling fans.
5Don’t frequently turn on and off the instrument, doing so will lead to the loss of the
calibrated data and the data saved by users.
5.1Dimension and weight
Dimension (W*H*D): 350mm*120mm*400mm
Weight: about 7kg
5.2 Safety
The instrument is the class I
5.2.1 Insulated resistance
Under the reference working condition，the insulated resistance between powerterminal
and shell is no less than 50MΩ；
Under transportaion condition，the insulated resistance between powerterminal and shell
is no less than 2MΩ；

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5.2.2 Insulation intensity
Under the reference working condition，the rated voltage between powerterminal and shell is
1.5kV，50Hz AC voltage is 1 Min.，no arc phenomenon.
5.2.3 Leakage current
Leakage current is no larger than 3.5mA.
5.3 Electromagnetic compatibility
Power instaneous sensitivity is based on GB6833.4
Transmmission sensitivity is based on GB6833.6
Radiated interference is based on GB6833.10

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Chapter 2 Instruction of front panel
2.1 Instruction of front panel
Figure 2-1
Figure 2-1 Instruction of front panel
No. Name Instruction
1 Brand and model TH2689 or TH2689A
Capacitor Leakage Current/IR Meter
2 POWERaSwitch on and off 220V/110V power
3 LCD 240*64 dot-matrix LCD
4 SOFTKEYs
The five keys have different functions in
different menus
No. Name Instruction
5 DISPLAY For entering the prevous page
6 MAIN For entering the main function page
7 SYSTEM For entering system setup page
8 CURSOR
For controlling the movement of cursor on the
screen, the selected parameter is displayed

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with highlight.
9 UNKNOW INPUT：current sampling terminal
10 Voltage output
terminal
HV（-）：negative voltage output terminal；a
HV（+）：voltage positive terminal；
11 Ground
Connect with shielding layer of the component
to be tested ，in order to separate the
electromagnetic interface to improve the
accuracy and stability.
12 number/letter
keyboard
For inputting number or character if desired（file
name）.
13 BACKSPACE For deleting numbers or letters if desired.
14 ENTER Confirm the inputed numbers .etc
15 DISCHARGE The instrument enters discharging status.
16 CHARGE/TEST
Trigger test，when setting manual trigger，press
the key to trigger a test.
2.2 Instruction of rear panel
Figure 2-2

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Figure 2-2 Instruction of rear panel
No. Name Instruction
1 RS232C
Provide the universal serial communication
interface for instrument and external device. All
parameter setup and command are set and
obtained by computer to realize the remote
control.
2 IEEE488（optioanl）
Provide universal parallel communication
interface for instrument and external device，the
function is the same as 1
3 Ground
4 HANDLER
The instrument outputs compare result viathis
interface，and obtains “setup”signal via sorting
interface.
5 Label plate Record the date, model, manufacturer .etc
6 3-cable power
socketa
Connect the 220V/50Hz or 110V/60Hz AC
power.

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Chapter 3 Operation
3.1 Connection of （DUT）
Figure 3-1
Note：
INPUT terminal is connected with positive terminal，
HV（-）outputs negative voltage，and connects the negative terminal of DUT.

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3.2 Operation
3.2.1 MAIN INDEX
Press to enter ＜MAIN INDEX＞page，use direction key to
move cursor ，press to enter the corresponded subfunction page，
press to return to the previous test page.
Shown as figure 3-2：
FILE ：file storage page；
Calibration ：calibration page，not for user.
Figure 3-2
Page Explaination Instruction
SEQ. TEST In-turn auto test
page
The process of charge, test, discharge is
finished automatically after triggering
STEP TEST One-step manual
test page
Trigger to enter charging status, and
enters test status after charging, manual
discharge is requried
CONT TEST Sequence atuo test
page
Charge after triggering, enter test
status,once the external capacitor without
electricity is connected to the test
terminal, then discharge manually in auto
trigger charge, test.
NULL Null test page
W.V. TEST Aluminium foil
withstanding voltage

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test page
COMPARE Compare function
setting page
FILE File storage page
Calibration Calibration page Not for user
3.2.2 SEQ. TEST
On this page，just press ，the instrument can finish
charge, test, discharge automatically.
3.2.2.1 ＜SEQ.TEST＞
On ＜MAIN INDEX＞page，use direction key to move cursor to“（1）
SEQ. TEST”，then press to enter＜SEQ.TEST＞page，there are
two pages on ＜SEQ.TEST＞，shown as figure 3-3：
1 2
3
7 4
5
6
Figure 3-3（a）SEQ.TEST page 1
Figure 3-3（b）SEQ.TEST page 2

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※Note：
（1）In（CHARGE）status, parameter can’t be set，and in（TEST）status, the
parameter of （RANG）and（SPEED）can be set.
（2）In the status of （CHARGE）and （TEST）， press
to return to the discharge status.
（3）when TRIG mode is set as BUS、EXT，the trigger signal is controlled by
external interface，and it is invalid to press .
3.2.2.2 Instruction of displayed file
Shown as figure 3-3（a）：
1 Name
2 Test function parameter（LC/IR）and test result
3 Compare result：（√PASS），（×HIGH），（×LOW）；if compare function is off，
there is no display
4 Voltage monitor
5 Current procedure
6 Softkey zone
7 Test parameter setup
3.2.2.3 Instruction of setting test parameter
（1）Test voltage（LEV），range 1V～800V（TH2689）/ 1V～500V（TH2689A）
Figure 3-4 Setup of test voltage

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Move cursor to “LEV：100.0V”，operate according to the table below：
Coarse urning ，from small to large ：
6.3→10.0→16.0→25.0→35.0→50.0→63.0→100.0→160.0→200.0→250.0→3
50.0→400.0→450.0→500.0（→550.0→600.0→630.0→800.0）
Coarse turning ，from large to small ：
6.3←10.0←16.0←25.0←35.0←50.0←63.0←100.0←160.0←200.0←250.0←3
50.0←400.0←450.0←500.0（←550.0←600.0←630.0←800.0）
Fine turning，when LEV ≥100.0V，stepper is +1V；
When LEV ＜100.0V，stepper is +0.1V
Fine turning，when LEV ≥100.0V，stepper is -1V；
When LEV ＜100.0V，stepper is -0.1V
Numberic
key
Input test voltage value directly（default unit is V），press ENTER to confirm
（2）Charging current（CC），range 0.5mA～500mA
Figure 3-5 Setup of charging current
※Note：
When LEV ≤100V, Imax = 500mA；
When LEV ＞100V，the Max. charge current is limited by power，and use
P=UI to obtain
Imax = P / LEV — — — （ P = 50W ）
Move cursor to “CC：15.0mA”，and operate according to the table below：
Coarse turning. When CC ≥100.0mA ，stepper is
+50.0mA；
When CC ＜100.0mA，stepper is +5.0mA；
Coarse turning. When CC ＞100.0mA ，stepper is
-50.0mA；
When CC ≤100.0mA，stepper is -5.0mA；

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Fine turning. Stepper is +0.5 mA；
Fine turning. Stepper is -0.5 mA；
Numberic key Input charging current value directly（default unit is mA），
press ENTER to confirm
（3）（RANG），small character A means AUTO，H means HOLD
Figure 3-6 setup of range gear
Move cursor to“RANG：2uA A”，operate according to the table below：
Auto range gear，‘A’is displayed in the current range
Lock range gear，‘H’is displayed in the current range
Select range gear，2uA→20uA→200uA→2mA→20mA
Select range gear，20mA→2mA→200uA→20uA→2uA
（4）（SPEED）
Figure 3-7 Setup of test speed
Move cursor to “SPEED：FAST”，operate according to the table below：

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Fast
Middle
Slow
Note：the speed is slower and the test result is more stable.
（5）（CHG T），range 0Sec～999Sec,
Figure 3-8 setup of charging time
Move cursor to “CHG T：30S”，operate according to the table below：
Coarse turning. When CHG T ≥100Sec ，stepper is
+100Sec；
When CHG T ＜100Sec，stepper is +10Sec；
Coarse turning when CHG T ＞100Sec，stepper is
-100Sec；
When CHG T ≤100Sec，stepper is -10Sec；
Fine turning. Stepper is +1 Sec；
Fine turning. Stepper is -1Sec；
Numberic key Input charging time directly（default unit is Sec），press
ENTER to confirm
（6）delay test time（D T），range 0.2Sec～999.0Sec，the time is the one from
charge finishing to test starting, which is stable.

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Figure 3-9 Setup of delay test time
Move cursor to“D T：0.2S”，operate according to the table below：
Coarse turning. When D T ≥100Sec，stepper is +10Sec；
When D T ＜100Sec，stepper is +1Sec；
Coarse turning. When D T ＞100Sec，stepper is -10Sec；
When D T ≤100Sec，stepper is -1Sec；
Fine turning. Stepper is +0.1 Sec；
Fine turning. Stepper is -0.1Sec；
Numberic key Input charging time directly（default unit is Sec），press
ENTER to confirm
（7）Turn page（NEXT 1/2 and NEXT 2/2）
Figure 3-10
As figure 3-10 press or to enter the second page on ＜
SEQ.TEST＞（as figure 3-3）.
3.2.3 Single step manual test page
Ohthepage，press ，the instrument enters charging

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step；and press to tes；finally press to
return to discharge status.
3.2.3.1 <STEP TEST>
On ＜MAIN INDEX＞page，use direction key to move cursor to“（2）
STEP TEST”，press to enter ＜STEP TEST＞，there are 2 pages on
＜STEP TEST＞，shown as figure 3-11：
Figure 3-11（a）STEP TEST page 1
Figure 3-11（b）STEP TEST page 2
※Note：
（1）In CHARGE status, parameter can’t be set，in TEST status, only RANG and
SPEED can be set.
（2）In the status of CHARGE and TEST，press to return to
discharge status.
（3）TRIG mode is set as BUS、EXT，trigger signal is controlled by external
interface，it is invalid to press .

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3.2.3.2 Instruction of setting parameter
（1）LEV、CC、RANG、SPEED see §3.2.2.3
（2）Trigger mode （TRIG）
Figure 3-12 setup of trigger mode
Move cursor to“TRIG：INT”，operate according to the table below：
Internal auto trigger
Manual trigger
External trigger
※Note：BUS（bus trigger）is set by bus command
3.2.4 Continues auto test page
On the function page, press ，the instrument performs
a procedure of charge and test；if a capacitor without electricity is connected to
the test terminal, then trigger a procedure of charge and test automatically.
Finally press to return to discharge status. The function is
suitable for continues manual test status without discharge.
3.2.4.1 <CONT TEST>
On ＜MAIN INDEX＞page，use direction key to move cursor to “（3）
CONT TEST”，and press to enter ＜CONT TEST＞page，there are
2 pages on ＜CONT TEST＞，shown as the figure 3-13：

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图3-13（a）CONT TEST 第一页选项
图3-13（b）CONT TEST page 2
※Note：
（1）In CHARGE status, parameter can’t be set，in TEST status, only RANG and
SPEED can be set.
（2）In the status of CHARGE and TEST，press to return to
discharge status.
3.2.4.2 Set parameter instruction
（1）LEV、CC、RANG、SPEED, see §3.2.2.3
3.2.5 Null test page
3.2.5.1 <NULL> page
On ＜MAIN INDEX＞page，use direction key to move cursor to “（4）
NULL”，and press to enter ＜NULL＞page（shown as 3-14）.on this
page，press to start null test.