Tonghui TH2883S4-5 User manual

TH2883 Series Operation Manual
1
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TH2883 Series Operation Manual
2
Contents
Chapter 1 Overview........................................................................................................................ 1-1
1.1 Production introduction.................................................................................................... 1-2
1.2 Operation environment.....................................................................................................1-3
1.2.1 Power supply.......................................................................................................... 1-3
1.2.2 Environment temperature and humidity ................................................................1-3
1.2.3 Warm-up ................................................................................................................ 1-3
1.3 Dimensions and weight.................................................................................................... 1-3
Chapter 2 General specifications.................................................................................................... 2-1
2.1 Specifications...................................................................................................................2-1
2.2 Comparison methods........................................................................................................2-2
2.2.1Area size comparison............................................................................................. 2-2
2.2.2 Differential area comparison.................................................................................. 2-2
2.2.3 Corona discharge comparison................................................................................ 2-3
2.2.4 Differential phase comparison............................................................................... 2-4
Chapter 3 Panels and display..........................................................................................................3-1
3.1 Front panel ....................................................................................................................... 3-1
3.2 Rear panel......................................................................................................................... 3-3
3.3 Introduction to display area.............................................................................................. 3-4
Chapter 4 Introduction to [DISP]....................................................................................................4-1
4.1 Measurement display page...............................................................................................4-1
4.2 Introduction to symbols in measurement display page ....................................................4-1
4.3 Introduction to soft keys in measurement display page ................................................... 4-1
4.3.1 Display................................................................................................................... 4-2
4.3.2 Compare................................................................................................................. 4-2
4.3.3 Measure.................................................................................................................. 4-3
4.3.4 Utility..................................................................................................................... 4-4
4.3.5 Statistics................................................................................................................. 4-4
4.3.6 Modify ...................................................................................................................4-5
Chapter 5 Introduction to [SETUP]................................................................................................ 5-1
5.1 Introduction to icons of soft keys..................................................................................... 5-1
5.2 Measurement setup page..................................................................................................5-1
5.2.1 Step ........................................................................................................................ 5-2
5.2.2 Mode...................................................................................................................... 5-2
5.2.3 CH1-CH8(TH2883S8-5), CH1-CH4(TH2883S4-5) Channel setup...................... 5-3
5.2.4 Samp- can be set in TEST mode............................................................................ 5-3

TH2883 Series Operation Manual
3
5.2.5 Test Imp- can be set in TEST mode....................................................................... 5-3
5.2.6 Erase Imp- can be set in TEST mode..................................................................... 5-3
5.2.7 Volt ADJ- can be set in TEST mode....................................................................... 5-4
5.2.8 Start Volt- can be set in BDV test mode................................................................. 5-4
5.2.9 End Volt- can be set in BDV test mode.................................................................. 5-4
5.2.10 Volt Step- can be set in BDV test mode............................................................... 5-4
5.2.11 Comparator...........................................................................................................5-5
5.2.12 Position (AREASIZE, DIFF ZONE, PHASE DIFF) ..........................................5-5
5.2.13 Position（PHASE DIFF）..................................................................................5-5
5.2.14 DIFF（Limit）（ AREA SIZE, DIFF ZONE, PHASE DIFF）............................5-6
5.2.15 DIFF（Limit）（ CORONA）............................................................................. 5-6
5.3 Match Setup...................................................................................................................... 5-6
5.3.1 Step ........................................................................................................................ 5-7
5.3.2 Mode...................................................................................................................... 5-8
5.3.3 Std.Name-available in Sample mode..................................................................... 5-9
5.3.4 Step NO.-available in SW.Copy.............................................................................5-9
5.4 Int. File............................................................................................................................. 5-9
5.5 Ext. File.......................................................................................................................... 5-11
Chapter 6 Introduction to [SYSTEM]............................................................................................. 6-1
6.1 System.............................................................................................................................. 6-1
6.1.1 Brightness .............................................................................................................. 6-2
6.1.2 Pass/Fail................................................................................................................. 6-2
6.1.3 Pass Alarm ............................................................................................................. 6-2
6.1.4 Fail Alarm .............................................................................................................. 6-2
6.1.5 Key Sound..............................................................................................................6-2
6.1.6 Hard Copy.............................................................................................................. 6-2
6.1.7 Password................................................................................................................ 6-3
6.1.8 Language................................................................................................................ 6-3
6.1.9 Theme ....................................................................................................................6-3
6.1.10 Date...................................................................................................................... 6-3
6.1.11 Time ..................................................................................................................... 6-4
6.2 Parameter.......................................................................................................................... 6-4
6.2.1 Wave Disp.............................................................................................................. 6-5
6.2.2 Trig Mode .............................................................................................................. 6-5
6.2.3 Delay Time............................................................................................................. 6-6
6.3 Interface............................................................................................................................ 6-6
6.3.1 I/O.......................................................................................................................... 6-7
6.3.2 TH2883 RS232C interface..................................................................................... 6-7
6.3.3 USB interface.........................................................................................................6-9

TH2883 Series Operation Manual
4
6.3.4 LAN interface...................................................................................................... 6-11
6.4 About.............................................................................................................................. 6-13
Chapter 7 User guide ...................................................................................................................... 7-1
7.1 Use of keys....................................................................................................................... 7-1
7.1.1 Use of the roller ..................................................................................................... 7-1
7.1.2 Switch the display page ......................................................................................... 7-1
7.1.3 Numeric arrow key ................................................................................................ 7-1
7.2 Basic measurement...........................................................................................................7-2
7.2.1 Non-standard test................................................................................................... 7-2
7.2.2 Sample test for standard wave ...............................................................................7-2
7.3 BDV test...........................................................................................................................7-2
7.4 Technology application .................................................................................................... 7-3
7.4.1 Test objects............................................................................................................. 7-3
7.4.2 Select comparison method..................................................................................... 7-3
7.4.3 Settings of comparison method.............................................................................. 7-4
7.4.4 Select standards...................................................................................................... 7-4
7.4.5 Chart for differential area.......................................................................................7-4
Chapter 8 Command reference ....................................................................................................... 8-1
8.1 Command structure .......................................................................................................... 8-1
8.2 Notation conventions and definitions............................................................................... 8-3
8.3 Command reference ......................................................................................................... 8-3
8.3.1 DISPlay subsystem commands.............................................................................. 8-3
8.3.2 IVOLTage subsystem commands...........................................................................8-6
8.3.3 SRATE subsystem commands ............................................................................... 8-9
8.3.4 COMParator subsystem commands..................................................................... 8-10
8.3.5 TRIGger subsystem commands ........................................................................... 8-16
8.3.6 STATistic subsystem commands.......................................................................... 8-17
8.3.7 WADJust subsystem commands .......................................................................... 8-18
8.3.8 SWAVE subsystem commands ............................................................................ 8-18
8.3.9 FETCh? subsystem commands............................................................................ 8-20
8.3.10 MEASure subsystem commands ....................................................................... 8-22
8.3.11 ABORt subsystem command ............................................................................. 8-24
8.3.12 Mass MEMory subsystem commands ............................................................... 8-24
8.3.13 MeasSTEP subsystem commands...................................................................... 8-25
8.3.14 WaveSTEP subsystem commands...................................................................... 8-27
8.3.15 Common commands .......................................................................................... 8-28
8.4 Error and warning message............................................................................................ 8-29
Chapter 9 Handler interface............................................................................................................ 9-2

TH2883 Series Operation Manual
5
9.1 Basic information............................................................................................................. 9-2
9.2 Electrical characteristics................................................................................................... 9-3
9.2.1 DC isolated output.................................................................................................9-3
9.2.2 Isolated input.......................................................................................................... 9-4
9.3 Jumper setup on HANDLER interface............................................................................. 9-5
Chapter 10 Package contents and warranty.................................................................................. 10-1
10.1 Package contents.......................................................................................................... 10-1
10.2 Warranty....................................................................................................................... 10-1

TH2883 Series Operation Manual
1-1
Chapter 1 Overview
Thank you for your use of our products. Before the use of it, please locate the items listed in this
manual to ensure nothing is missing. If in the case that any item is missing, please contact us
immediately.
It is necessary to read this manual carefully before your proper use of TH2883S series impulse
winding tester.
Warning!
1) Operation
Do not put heavy objects on the tester.
There is a cooling fan on the rear side of this instrument, so any block of the air inlet is
prohibited.
2) Rigid power input
The stability of high voltage depends on stable power input. Be sure to provide rated AC
power or corrected power.
3) Grounding
For the safety of personnel and instrument, ensure the grounding terminal, designed in
power cord, be grounded correctly.
4) Test cable
To avoid electrical shock hazard, do not touch test terminals and test samples. The reason
is that a high voltage test cable is connected to the rear panel of this instrument, thus when
testing, the cable and test samples connected will carry a high voltage.
5) DO NOT open case unauthorized!
To avoid the injury to personnel and damage to the instrument, do not open the case
unauthorized due to the existence of high voltage in instrument.
6) Carry or move
Before moving the instrument, unplug the AC power sockets and remove high voltage test
line or external control line.
7) Maintenance
In non-use state, the instrument should be covered with a plastic or cloth cover. To clean
the tester, wipe the dirty parts with a soft cloth socked with diluted neutral detergent. Do
not use the following chemicals to clean the instrument: diluent, benzene or organic
solvent with similar chemical property with above materials.
8) Location
Do not locate the instrument in the environment of high temperature, direct sunlight or

TH2883 Series Operation Manual
1-2
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poor ventilation. In addition, the instrument will generate high voltage, so it must be used
at room temperature and in the absence of much dust.
1.1 Production introduction
Due to the influence of wire material, magnetic material, framework and manufacture technics,
winding products such as transformers, motor windings may have defects of low insulation
between winding layers, circles and leads. TH2883S series impulse winding tester, adopting
high-speed sampling techniques, is a new test instrument for insulation performance of winding
products.
TH2883S series compares the standard waveform stored in the non-volatile memory with the
current tested waveform. TH2883S series provides the PASS or FAIL comparison result
according to AREA SIZE, DIFFERENTIAL AREA, CORONA DISCHARGE or
DIFFERENTIAL PHASE. With its strong functions, accurate comparison methods, easy
operation and various interfaces, TH2883 can provide a perfect test solution for most winding
products.
Principles of impulse winding test
The impulse winding tester tests the electrical characteristics of coil winding without damaging the
DUT. The prerequisite condition is to test the quality of a coil at just a glance. The detection is
carried out when the same electric impulse, as used in the standard coil and here discharged by a
capacitor, is applied to the DUT. The voltage attenuation wave is generated in response to the
impulse, related to the Q-factor and inductance of the coil. In this sense, the tester can detect turn
and layer short, the differences in the number of turns and the material of the core. If high impulse
voltage is applied, the poor insulation will appear as a corona or layer discharge.
Figure 1-1 Simplified diagram for principles of impulse winding test
In figure 1-2, the self-oscillation attenuation wave has a close relation with the inductance L and
quality factor Q, while L and Q depend on the number of turn, manufacture technology,
properties of iron core material and whether it has air-coils. What’s more, the applied voltage is a
high impulse voltage, thus, it is easy to observe the short circuit, partial short turns and lays or
turns discharge phenomenon caused by insulation damage.

TH2883 Series Operation Manual
1-3
Figure 1-2 Typical self-attenuation oscillation wave
1.2 Operation environment
1.2.1 Power supply
Voltage: 198V-242VAC, 99V-121VAC
Power frequency: 47.5Hz-63Hz
Consumption: ≤200VA
1.2.2 Environment temperature and humidity
Normal working temperature: 0℃~40℃, Humidity: ≤ 90%RH
Referential working temperature: 20℃±8 ℃, Humidity: ≤ 80%RH
Transferring environment temperature: 0℃~50℃m, Humidity: ≤ 93%RH
1.2.3 Warm-up
The warm-up time should not be less than 15 minutes.
1.3 Dimensions and weight
Dimensions (W*H*D): 400mm×132mm×420mm
Weight: Approx.15.0kg

TH2883 Series Operation Manual Chapter 2 General specifications
2-1
Chapter 2 General specifications
2.1 Specifications
Specifications
TH2883-1
TH2883-5
TH2883-10
TH2883S8-5
TH2883S4-5
Impulse voltage
30V-1200V
5V steps
±5%±5V
100V~5000
V
10V steps
5%±15V
500V-10kV
20V steps
±5%±25V
100V-5000V
10V steps
±5%±15V
100V-5000V
10V steps
±5%±15V
Number of channels
1
1
1
8
4
Inductance test range
≥1uH
≥10uH
≥20uH
≥10uH
≥10uH
Impulse energy
Max 0.02J
Max 0.25 J
Max 0.5J
Max 0.25J
Max 0.25J
Test speed
6 times/sec
6 times/sec
3 times/sec
(voltage
output =
10kV)
6 times/sec
(single
channel)
6 times/sec
(single
channel)
Pulses applied
Max. 32
Input impedance
5MΩ
Display
800×480 dot-matrix LCD, 65k color TFT;
Waveform display dots: 600x256
Waveform
acquisition
8 adjustable sampling rate: Max.200Msps
Resolution：8 Bits
Memory depth：6k Bytes
Average：1-32
Comparison method
Compared with standard waveform:
AreaSize Comparison
DiffZone Comparison
Corona Comparison
PhaseDiff Comparison
Waveform
measurement
Voltage, time and frequency
Trigger mode
Manual (Foot), External, Bus, Internal,
Detection output
OK/Ng display, LEDdisplay, Beeper alarm
Measurement
statistics
Statistics for measurement results
Memory
Built-in memory: 20 standars waveforms and settings

TH2883 Series Operation Manual Chapter 2 General specifications
2-2
USB disk : external memory
Interface
Handler,RS232C,USB Device,USB Host,Lan
Power
Power supply
110V/220V ±10% 50Hz/60Hz ±5%
Power consumption
≤200VA
General specifications
Working
environment
Temperature
0℃- 40℃
Humidity
≤75% R.H.
Safty and electromagnetic
compatibility
IEC61010-1：2001，IEC61326-2-1：2005
2.2 Comparison methods
2.2.1 Area size comparison
As shown in figure 2-1, when comparison method is set to AREA SIZE, the area sizes of both
standard waveform and the tested waveform are calculated (integration method) between A and
B. The percent deviation is the ratio of the area size difference to the area size of the standard
waveform between A and B, expressed as a percentage.
Figure 2-1 Area Size Comparison
The area size of the waveform is nearly proportional to the energy loss in the winding. When a
sample winding has a short circuit between layers, the short circuit area is reflected as an
increase of energy loss.
2.2.2 Differential area comparison
When comparison method is set to Differential Area, TH2883 calculates the area size of
differential portion between the standard waveform and the tested waveform from A to B. (The
differential portion area size is indicated as the shaded part in Figure 2-2.) The percent deviation

TH2883 Series Operation Manual Chapter 2 General specifications
2-3
is the ratio of the differential portion area size to the area size of the standard waveform between
A and B, expressed as a percentage.
Figure 2-2 Differential Area Comparison
The differential area size reflects the value of inductance and total energy loss. This method is
especially effective to detect the differences of inductance L between the standard winding and
the tested winding.
2.2.3 Corona discharge comparison
When comparison method is set to Corona Discharge, TH2883 detects the high frequency energy
of corona discharge from A to B as shown in Figure 2-3. When the corona evaluation value is
less than the corona difference limit, then the comparison result will be PASS. When the corona
evaluation value is more than the corona difference limit, then the comparison result will be
FAIL. The corona evaluation value and difference limit are both expressed as an integer.
Figure 2-3 Corona Discharge Comparison
User can sample some coil samples (e.g. 10 samples) to set an effective corona discharge value.
First, applying an impulse voltage to each coil will gain the corona discharge value of each coil.

TH2883 Series Operation Manual Chapter 2 General specifications
2-4
Then, a new effective value can be set by adding 20% to the maximum corona discharge value.
In order to ensure the correctness of the new value, user can test these coils once more and
observe the corona PASS or FAIL.
2.2.4 Differential phase comparison
User can specify a zero-crossing point to compare. The instrument will judge the zero-crossing
offset between the tested waveform and standard waveform and then compare the oscillation
period between the two waveforms. The percentage of the two values will be taken as the
judging criterion and the reference is set by percentage. As is shown in figure 2-4, A~B is the
offset and C~D is the oscillation period of standard waveform. The third zero-crossing point of
the compared waveform is to set.
Figure 2-4 Phase Differential Comparison
NOTE: The tester can only set zero-crossing points from 2 to 10. The first zero-crossing point
cannot reflect the actual performance of coils, so it is not necessary to set the first point. In real
phase differential comparison, there are four results generated: PASS, FAIL, FAIL1 and FAIL2.
PASS is up to standard; FAIL, below standard. While FAIL1 means the zero-crossing point has
not been found, that is to say, it is unable to find the set zero-crossing point on the waveform of
the tested coil; FAIL2 indicates that a complete period cannot be found on the standard
waveform. As shown in figure2-4, the third zero-crossing point must be present in the waveform
so as to ensure the normal operation of phase differential comparison.

TH2883 Series Operation Manual Chapter 3 Panels and display
3-1
Chapter 3 Panels and display
3.1 Front panel
USB
POWER
MENU
COPY
ENTRY
ESC
ENTER
DISP SETUP SYSTEM PQRS TUV WXYZ
7 8 9
+/-
PASS
FAIL
START
GHI JKL MNO
ABC DEF
654
1 2 3
0
TH2883S8-5 Impulse Winding Tester
Serial Number
Name
Instruction
1
Brand and model
2
LCD
320×240 Large-Scale dot-matrix LCD displays
measurement waveform, set parameters, system
configurations, etc.
3
SOFTKEY
The five keys’ functions are not fixed and have
different functions in different menus. Five soft
keys are used to select control and parameter
functions. Current function of each soft key is
displayed along its left side.
4
[DISP]
Press DISP menu key to enter the <MEAS DISP>
page.
5
[SETUP]
Press SETUP menu key to enter the <MEAS
SETUP> page.
6
Roller
Control the movement of the cursor, confirm and
modify data
7
[SYSTEM]
Press SYSTEM menu key to enter the <SYSTEM
SETUP> page.
8
NUMBER keys
Input numbers or characters
9
ESC
ESC key is used to cancel the enter of numbers or

TH2883 Series Operation Manual Chapter 3 Panels and display
3-2
characters.
10
BACKSPACE
The function of BACKSPACE key is to delete
numbers or characters wrongly entered.
11
ENTER
ENTER key terminates numeric input data and
enters the displayed value on the data input line
(bottom line of the LCD screen).
12
HV
High Voltage Indicator indicates that the
instrument is outputting dangerous impulse test
voltage to the HV terminal on the rear panel. Do
not touch test terminals or DUT.
13
PASS/FAIL indicator
When PASS indicator flashes, the comparison
result is up to standard; while FAIL, below
indicator. Valid only in comparison function.
14
START
Press the START key to start a measurement. In
the process of test, pressing the key will terminate
the measurement.
15
High voltage terminal
Output high voltage. Although all 8 channels
(TH2883S4-5 is equipped with 4 channels) are not
equipped with it, this high voltage terminal has
high voltage output when pressing START.
16
Ground terminal
Low terminal for high voltage test, connecting to a
test fixture and DUT with 15.
17
COPY
Capture the screen information
18
POWER
Switch on or off the main power
19
USB Host interface
An USB disk can be connected for standard
waveforms and measurement conditions storage.
Table 3-1 Front panel instruction

TH2883 Series Operation Manual Chapter 3 Panels and display
3-3
3.2 Rear panel
GND
FOOT.C
HANDLER DEVICE RS-232C LAN
RATING FUSE
T1AL
~T2AL
110V / 60Hz
~220V /50Hz
HV
WARNING
THIS INSTRUMENT CONTAINS NO OPERATOR SERVICEABLE PARTS INSIDE;
REFER SERVICING TO SERVICE TRAINED PERSONNEL ONLY.
！
PLEASE READ MANUAL FOR SAFETY
DISCONNECT INPUT POWER BEFORE REPLACING FUSE FOR CONTINUED FIRE
PROTECTION,USE MANUAL SPECIFIED TYPE RATING FUSE ONLY.
！
CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8
Serial number
Name
Instruction
1
HANDLER interface
Comparison results are output via the handler
interface. You can also start or stop a test through
the interface.
2
USB DEVICE interface
A PC can remotely control TH2883 through the
USB DEVICE interface.
3
RS232C serial interface
RS232C serial interface can be connected to an
external device for remote control and operation
4
LAN interface
Be used to connect network cable.
5
FOOT CONTROL
A footswitch can be used to start a measurement
instead of pressing the START key from the front
panel.
6
Name plate
Show manufacture date, model, batch number,
manufacturer, etc.
7
Fan window
Discharge heat.
8
Ground terminal
Ground the instrument shell.
9
Fuse
Fuse is used to protect the instrument .220V/1A
10
3-wire power socket
Connect the power.
11
Scanning Test Terminal
TH2883S8-5 has 8 scanning test terminals, from
CH1 to CH8
TH2883S4-5 has 4 scanning test terminals, from
CH1 to CH4
12
Test terminal
High voltage output terminal, the function is the
same as that of the high voltage terminal 15 on the

TH2883 Series Operation Manual Chapter 3 Panels and display
3-4
front panel.
13
Test terminal
It is the GND terminal connected to the DUT with
11 and 16 on the front panel.
Table 3-2 Rear Panel Instruction
3.3 Introduction to display area
Specific definition for each area:
1Voltage
Show the voltage of waveform
2Test status
RUN means in the test process, STOP means the test has been terminated.
3Waveform display area
In this area, test and standard waveforms, peaks of impulse voltage and comparison results
are displayed.
4Indicate the waveform location in the memory.
5Indicate whether a standard waveform exists. N means a standard waveform exists while H
does not.
6Show the memory depth and indicate the current display color of the test waveform. User
can use the roller to change the color.
7Test step

TH2883 Series Operation Manual Chapter 3 Panels and display
3-5
Display format: XX/XX. The first two digits display the step number of the current
waveform display and comparison and the latter two digits display the total numbers of
steps. The maximum steps can be set is 20.
8Measurement result
Show the final measurement result.
9Comparison result
Four comparison results and their final display results.
10 Main menu for soft key
11 Function zones of soft keys
Show the corresponding function and parameter of each soft key.
12 Information
Show the state of interface selecting, availability of U disk, key lock, etc.
13 Time base
This area shows the time between the two dash lines of this waveform display area in X
direction. The time shown in this area cannot be modified by user but varies with the
sampling rate and time base zoom.
14 Peak value
Show the peak value of the current test voltage.
15 Comparison results for several steps
This area displays the comparison results for several steps. The number displays the set step
number. When the display is set as SINGLE DISPLAY, this area displays the corona of the
selected step.
16 Sampling rate
Show the sampling rate of the current waveform, which can be altered by the [Modify] soft
key and the roller.
17 Impulse voltage
Show the current set impulse voltage.
18 Final measurement result
Show the final measurement result. When the measurement results of all steps are PASS, the
final measurement result displays PASS, or else displays FAIL. When the display is set as
SINGLE DISPLAY, there is no display in this area.
19 Time
Display the real time.

TH2883 Series Operation Manual Chapter 4 Introduction to [DISP]
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Chapter 4 Introduction to [DISP]
Press the DISP menu key to enter the < MEAS DISP> page (the default page). In this page,
measurements are taken and the test waveform is displayed. Some function settings such as
standard sampling (Standard), comparison setting (Compare), measurement function (Measure),
auxiliary function (Utility), statistic function (Statistics), display color of the waveform, test step,
sampling rate, etc. Figure 4-1 shows the measurement display page.
4.1 Measurement display page
Figure 4-1 Measurement display page
4.2 Introduction to symbols in measurement display page
Enter the next menu.
Return to the upper menu.
Lighten this symbol to enable the roller, while darken this symbol to disable the roller.
The roller can be rotated and has the function of key.
4.3 Introduction to soft keys in measurement display page
Display Enter the Display setup sub-menu. Under this menu, multi and single display can be
selected.

TH2883 Series Operation Manual Chapter 4 Introduction to [DISP]
4-2
Compare Enter the Compare setup submenu. Under this menu, states of the four compare
methods, compare parameters can be set.
Measure Enter the Compare function submenu. Under this menu, wave voltage, wave time,
wave frequency can be set.
Utility Enter the Utility function submenu. Under this menu, internal file, wave amplitude,
grid in the waveform display zone, corona display zone, and the state of the key lock can be
set.
Statistics Enter the Statistics function submenu. Under this menu, statistics for the current
test result can be set. User can select to open, clear or save data.
Modify Press the corresponding soft key and revolve the roller to modify the impulse
voltage, sampling rate, etc.
4.3.1 Display
The instrument provides two display mode: multi and single.
4.3.1.1 Multi
If Multi is selected, all the test results of the inserted test steps will be
displayed on the screen below. When all the results of the test steps are
OK, the final result is PASS. Once one of the test step fails, the final
result is FAIL.
4.3.1.2 Single
If Single is selected, the current test result of the selected test step will
be displayed on the screen below, including the comparison result,
corona and peak voltage.
4.3.2 Compare
TH2883 series provides four kinds of compare methods as follows: Area Size Comparison,
Differential Area Comparison, Corona Discharge Comparison and Phase Differential
Comparison. The instrument collects the waveform data of 6000 points, thus user can select
the comparison area between the start position and 6000.
Press the Compare soft key to enter the main menu of it. Four compare methods can be set
under this menu.
Note: Press the soft key to enable the roller. When the roller is revolved,
two parallel yellow lines (except Differential Phase comparison) will be displayed in
the waveform display zone. The full line is the selected one, while the dash line is not
the selected one.
4.3.2.1 AREA SIZE
Select the area comparison method.
Position
0000-6000
Method
AREA

TH2883 Series Operation Manual Chapter 4 Introduction to [DISP]
4-3
State means this method is turned on, while means off.
Lighten this icon to enable the roller. The start point, the end point
or both the start and the end points will be selected by the press of
the roller. Revolve the roller will change the position of the start
point, the end point or both the start and the end points by 10
points. The position ranges from 0 to 6000.
Lighten the icon to enable the roller and change the differential
value.
Return to previous page.
4.3.2.2 DIFF ZONE Select the differential area size comparison method. All setup
operations are the same as those ofAREA SIZE.
4.3.2.3 CORONA Select the corona comparison method. All setup operations are the
same as those of AREA SIZE. The corona comparison value has no
unit ranging from 1 to 255.
4.3.2.4 PHASE DIFF
Select the phase differential comparison method. All setup
operations are the same as those of AREA SIZE. But the position
parameter is different, it means to choose the zero-crossing
position and the value ranges from 2 to 99.
4.3.2.5 Return to the main menu.
4.3.3 Measure
Measurement function is used to measure impulse voltage, time and frequency.
Note: When a function is selected and the roller is enabled, two lines will be displayed
in the waveform display zone. The differential value of the two lines corresponds to the
value showing on the second soft key.
Press the roller to switch between the high limit, the low limit and the
high and low limits. Then revolve the roller to change the position of
the high and the low limits. The voltage differential value between the
high and the low limits (ΔV) is as shown on the second soft key.
Note: The default low limit locates on the center line.
The high limit, the low limit or the high and the low limits can be
Position
0000-6000
Diff
2.0%
Method
DIFF ZONE
Method
Corona
Method
Corona
Method
PHASE DIFF
Voltage
1000V
Time
10.00μs