Tonghui TH2683A User manual

O
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TH2683A Insulation Resistance Meter
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TH2683A Operation Manual Ver.1.3
Contents
Contents
1) Introduction to Instrument, Unpacking and Installing...................................................... 1
1.1 Introduction to Instrument................................................................................. 1
1.2 Unpacking ........................................................................................................... 1
1.3 Power Connection .............................................................................................. 1
1.4 Fuse..................................................................................................................... 2
1.5 Environment ....................................................................................................... 2
1.6 Use of Test Fixture.............................................................................................. 2
1.7 Warm‐up............................................................................................................. 2
1.8 Other Features.................................................................................................... 2
2) Introduction to Front and Rear Panels.............................................................................. 3
2.1 Introduction to Front Panel ................................................................................ 3
2.2 Introduction to Rear Panel ................................................................................. 4
2.3 Display Zone ....................................................................................................... 5
2.4 Introduction to Buttons on Front Panel ............................................................. 6
2.4.1 [MEAS] ................................................................................................................ 6
2.4.2 [SYSTEM]............................................................................................................. 6
2.5 Simple Operation................................................................................................ 6
2.6 Starting Up.......................................................................................................... 7
3) Basic Operation ................................................................................................................. 9
3.1 <MEAS DISP> ...................................................................................................... 9
3.1.1 Measurement Functions................................................................................... 10
3.2 <MEAS SETUP> ................................................................................................. 10
3.2.1 OUTP VOLT ....................................................................................................... 11
3.2.2 MEAS MODE ..................................................................................................... 12
3.2.3 CHAR TIME........................................................................................................ 12
3.2.4 MEAS SPEED ..................................................................................................... 13
3.2.5 RANGE SET ........................................................................................................ 13
3.2.6 LOCK RANGE ..................................................................................................... 13
3.2.7 CONT CHEC ....................................................................................................... 14

TH2683A Operation Manual Ver.1.3
Contents
3.2.8 OPEN CLR .......................................................................................................... 14
3.2.9 Average............................................................................................................. 15
3.2.10 MEAS DISP ........................................................................................................ 15
3.3 <PICKOUT SETUP> ............................................................................................ 16
3.3.1 PICK FUNC......................................................................................................... 16
3.3.2 PICK ITEM.......................................................................................................... 17
3.3.3 LOLI ONE ........................................................................................................... 17
3.3.4 BEEP SET ........................................................................................................... 17
3.3.5 Steps for BIN Disp ............................................................................................. 18
3.3.6 Steps for PICK LIVA ........................................................................................... 18
3.3.7 Steps for OUTP RESU ........................................................................................ 19
3.3.8 PULSE WID ........................................................................................................ 19
3.4 Start Test........................................................................................................... 19
3.4.1 Test Method ..................................................................................................... 19
3.4.2 Operation Process ............................................................................................ 20
3.4.3 Range Selection ................................................................................................ 21
4) System Setup and File Manage ....................................................................................... 22
4.1 System Setup .................................................................................................... 22
4.1.1 BEEPER.............................................................................................................. 22
4.1.2 PASSWORD ....................................................................................................... 22
4.1.3 BUS MODE ........................................................................................................ 23
4.1.4 LANGUAGE.............................................................................................................. 23
4.1.5 KEYSOUND ........................................................................................................ 24
4.1.6 TRIGER .............................................................................................................. 24
4.1.7 BAUD RATE ....................................................................................................... 24
4.1.8 HANDLER VCC ................................................................................................... 25
4.1.9 Setting Time and Date ...................................................................................... 25
4.2 <File Manage> .................................................................................................. 25
4.2.1 Introduction to Save/Recall .............................................................................. 25
4.2.2 Structure of File Folder/File in a U Disk ............................................................ 26

TH2683A Operation Manual Ver.1.3
Contents
5) Performance Index .......................................................................................................... 30
5.1 Measurement Function .................................................................................... 30
5.1.1 Measurement Parameters and Notations........................................................ 30
5.1.2 Range ................................................................................................................ 30
5.1.3 Trigger............................................................................................................... 30
5.1.4 Mode of Test Terminal ..................................................................................... 30
5.1.5 Measurement Speed (when MEAS DISP & BIN DISP is set as OFF) .................. 30
5.1.6 Display Digits .................................................................................................... 31
5.2 Test Signal......................................................................................................... 31
5.2.1 Output Voltage Range ...................................................................................... 31
5.2.2 Output Voltage Accuracy.................................................................................. 31
5.2.3 Maximum Display Range .................................................................................. 31
5.3 Measurement Accuracy.................................................................................... 31
5.3.1 Basic Accuracy for Resistance Measurement................................................... 32
6) Remote Control ............................................................................................................... 33
6.1 RS232C Connection .......................................................................................... 33
6.2 SCPI (Standard Commands for Programmable Instruments)........................... 34
6.3 USBTMC Remote Control System..................................................................... 34
6.3.1 System Configuration ....................................................................................... 34
6.3.2 Install the Driver ............................................................................................... 35
6.4 USBVCOM Virtual Serial Port............................................................................ 36
6.4.1 System Configuration ....................................................................................... 36
6.4.2 Installing Driver................................................................................................. 36
7) SCIP Command Reference............................................................................................... 38
7.1 TH2683A Subsystem Commands...................................................................... 38
7.1.1 DISPlay Subsystem Commands......................................................................... 38
7.1.2 FUNCtion Subsystem Commands ..................................................................... 39
7.1.3 DISCharge Subsystem Commands.................................................................... 44
7.1.4 TRIGger Subsystem Commands........................................................................ 44
7.1.5 FETCH? Subsystem Commands ........................................................................ 45

TH2683A Operation Manual Ver.1.3
Contents
7.1.6 COMParator Subsystem Commands ................................................................ 46
7.1.7 SYSTem Subsystem Commands........................................................................ 50
7.1.8 Mass MEMory Subsystem Commands ............................................................. 51
7.2 GPIB Common Comamnds ............................................................................... 51
8) Handler Interface ............................................................................................................ 53
9) Package Contents and Warranty..................................................................................... 56
9.1 Package Contents ............................................................................................. 56
9.2 Marks ................................................................................................................ 56
9.3 Package............................................................................................................. 56
9.4 Shipping ............................................................................................................ 57
9.5 Storage.............................................................................................................. 57
9.6 Warranty........................................................................................................... 57
Declaration
The descriptions contained in this manual may not cover all information about this instrument.
Introductions to the improvements of the instrument in performance, function, internal structure,
outer appearance, accessories, packing material, etc. are subject to change without notice. If you
find any inconformity of this manual with our instruments, please contact us for further
consultation by the address listed on the cover.

TH2683A Operation Manual Ver.1.3
1
1) Introduction to Instrument, Unpacking and
Installing
Thank you for your purchase and use of our products! This chapter will introduce the basic
instrument performance, which is followed by notes of unpacking and installing.
1.1Introduction to Instrument
With touch, color LCD screen and unique insulation resistance/leakage current dual test function,
TH2683A Insulation Resistance Meter is an intelligent measurement instrument that is used for
rapid measurements on insulating properties of electronic parts and components (especially the
capacitance), dielectric material, equipments, wires, cables, etc.
TH2683A is provided with sorting output and external single pulse signal input interface, making
it easy for pipeline operation. The quipped communication interface can achieve the off‐site
operations of all functions of the instrument through microcomputer. The instrument has a
powerful anti‐jamming capability, which makes the measurement more reliable
1.2Unpacking
Inspect the shipping container for damage after unpacking it. It is not recommended to power on
the instrument in the case of adamage container.
If the contents in the container do not conform to the packing list, notify us or your dealer.
1.3Power Connection
1) Power supply: 90V to 121Vac (60Hz) or 198 to 242Vac (50Hz).
2) Power supply power range:≤50VA.
3) L(line wire), N(neutral wire) and E(earth ground wire) of the power supply input socket
should correspond to the power plug of the instrument.
4) The instrument has been specially designed for decreasing noise jamming caused by the
input in AC power terminal, but it is also recommended to use it in the environment of low
noise. If noises cannot be avoided, install a power source filter please.
WARNING: To avoid injury to personnel and damage to the instrument resulting from electric
shock, do sure that the earth ground wire is safely grounded.

TH2683A Operation Manual Ver.1.3
2
1.4Fuse
The fuse is astandard configuration, so use the included custom fuse please.
1.5Environment
1) Do not store or use the instrument where it could be exposed to many dusts, great vibration,
direct sunshine and corrosive gas.
2) The instrument should operate under the temperature ranging from 10℃to 40℃,relative
humidity of no greater than 90%. For high accuracy, use the instrument in the environment
above mentioned.
3) For high accuracy, do not block the left air vent so as to ensure good ventilation.
4) The instrument has been specially designed for decreasing noise jamming caused by the AC
power input, but it is also recommended to use it in the environment of low noise. If noise
cannot be avoided, install a power filter please.
5) If the instrument will not be used for along time, please place it in the original or a similar
packing box. The environment temperature should be kept in the range of 0℃to 40℃,and
the relative humidity should not be greater than 90%RH. The box should be located in an
airy room where it could be exposed corrosive impurities and direct sunlight.
6) Test leads on the instrument that are connected to DUTs should be kept away from strong
electromagnetic fields to avoid interference.
1.6Use of Test Fixture
Only use the test fixture or cable made by our company, because the use of other test fixtures or
cables may result in incorrect measurement results. In addition, for good contact of DUT and
fixture, keep the test fixture or cable and pins of DUT clean.
Connect the test fixture or cable to HV (‐)and INPUT terminals on the instrument front panel.
1.7Warm‐up
1) For accurate measurement, the warm‐up time should not be less than 30 minutes.
2) Do not turn on or off the instrument frequently. This may cause internal data confusion.
1.8Other Features
1) Consumption:≤50VA
2) Dimensions (W*H*D): 235mm*104mm*360mm; this dimension is the final packaging size.
3) Weight: Approx. 3.6kg

TH2683A Operation Manual Ver.1.3
3
2) Introduction to Front and Rear Panels
This chapter will describe the basic operation of TH2683A. Before using the instrument, please
read this chapter carefully.
2.1Introduction to Front Panel
Figure 2‐1shows the front panel of TH2683A.
POWER
1 2 3
4
5 6 7
12 11 9 8
10
INPUT
GUARD
(-)
HV
WARNING:
！
1000VDC MAX OUTPUT;
PLEASE REFER TO THE
"SAFETY SUMMARY"IN
THE OPERATION MANUAL.
MEAS SYSTEM
FILE ENTER
TESTDISCH.
TH2683A Insulation Resistance Meter
Figure 2‐1Front Panel
1) USB interface
HOST interface of USB
2) LCD and touch screen
480*272 dot‐matrix, 24‐bit, 4.3‐inch TFT and touch LCD is used for measurement setup and
result display.
3) [MEAS]
Press [MEAS] to enter into the MEAS DISP page.
4) [FILE]
Press [FILE] to enter into the page of internal and external File Manage.
5) [SYSTEM]
Press [SYSTEM] to enter into the SYSTEM SETUP page.
6) [ENTER]
Press this key to terminate and store input data.
7) Test terminals (HV‐), INPUT, GUARD

TH2683A Operation Manual Ver.1.3
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(HV‐): voltage output terminal
INPUT: sampling input terminal
GUARD: ground shield terminal
8) [TEST]
When the trigger mode is set as MANU (manual), pressing this key can trigger the
instrument manually.
9) [DISCH.]
Press this key to make the instrument return to discharge state from test state.
10) Universal Arrow Keys
There are four arrow keys: up, down, left and right arrow keys.
11) Trademark and Model
Show instrument trademark and model.
12) POWER
It is the power switch.
2.2Introduction to Rear Panel
Figure 2‐2shows the rear panel of TH2683A.
1 2 3
456
DEVICE HANDLER
RS-232C FOOT.C RATING FUSE
~T2AL110V/60Hz
~220V/50Hz T1AL
RS-232C
S/N:
R3-513-00016
7
Figure 2‐2Rear Panel
1) RS232C Serial Interface
It realizes serial communication of the instrument with PC.
2) FOOT.C
External trigger signal, foot switch TH1801‐001 (optional) can be used to trigger measurement
when the trigger source is EXT.
3) Power Socket
It is used to input AC power and it is equipped with fuse socket. Fuse will be placed in fuse socket
to protect the instrument.

TH2683A Operation Manual Ver.1.3
5
4) Nameplate
It shows the instrument model.
5) Ground Terminal
This terminal connects the instrument chassis thus to protect or shield ground connection.
6) HANDLER Interface
Through HANDLER interface, an automatic test system can be conveniently constructed to realize
auto test. TH2683A will output sorting comparator result signals and link signals. Meantime,
“START” signal can be obtained through this interface.
7) USB Interface
PC can remotely control TH2683A through USB DEVICE.
2.3Display Zone
TH2683A adopts 24‐bit 4.3‐inch LCD touch screen with aresolution of 480*272. The display
screen is divided into the following zones, as shown in figure 2‐3.
Figure 2‐3 Display zone
1. Page name
This zone shows the current page name.
2. Function zone
On measurement display page, this zone is used to show the measurement parameters
(parameters on this page can only be shown, but not be changed); on other page, it is used to
change the measurement parameters and zones after colon of functional parameters can be
touched to change.
3. Soft keys

TH2683A Operation Manual Ver.1.3
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This zone displays the function menu corresponding to the cursor‐located zone.
4. Result display
This zone displays the measurement result and the time of each test procedures (counting down).
5. Prompt information
This zone displays all prompt information.
6. Bin display
This zone displays sorting results of bins (when sorting function is ON).
7. Warning sign
This zone is used to blinking display some warning information, for example, when HV is
displayed, it is warning that there is high voltage in test terminal. The instrument user should be
careful.
2.4Introduction to Buttons on Front Panel
2.4.1 [MEAS]
Press <MEAS> to enter into display homepage. Selectable functions on this page are shown as
follows:
<MEAS SETUP>
<SYSTEM SETUP>
<FILE SETUP>
<SORTING SETUP>
<START SAVING>
2.4.2 [SYSTEM]
Press the [SYSTEM] button to enter into the <SYSTEM SETUP> page; the setup items of system
can be changed on this page.
2.5Simple Operation
Simple operation steps for TH2683A:
Use [MEAS], [SYSTEM] or [FILE] or soft keys to enter into the page required to enter. (Refer
to figure 2‐5)
Use arrow buttons ([←] [↑] [→] [↓]) to move the cursor to desired zone.
When the cursor is moved to asoft key zone, press ENTER to confirm the selection. If it is
required to input a number or afile name, use the keyboard to input and press ENTER to
finish entry. You can use arrow buttons to select anumber or aletter.
NOTE: DO NOT use acute units or nails to touch the screen. Doing so will cause damage
to the screen, our company shall not be liable to this case.

TH2683A Operation Manual Ver.1.3
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2.6Starting Up
Ensure the power earth (ground) wire is grounded, plug into a 3‐wire power socket. Press down
the power switch on the bottom left corner of the front panel, the instrument will be started up
and aboot screen will be displayed.
Figure 2‐4shows the boot screen of TH2683A, indicating product information such as instrument
trademark, model and version.
Figure 2‐4TH2683A Boot Screen
If the password protection is enabled, you will be asked to input your password. After inputting
your password, press [ENTER] to enter into the main menu page.
NOTE: This series of products have enabled password protection and the default password is
2683. You can reset the password by yourself. Refer to the password function on <SYSTEM
SETUP> page for more details.

TH2683A Operation Manual Ver.1.3
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Figure 2‐5TH2683A Main Display

TH2683A Operation Manual Ver.1.3
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3) Basic Operation
3.1<MEAS DISP>
Touch the screen or press down [MEAS] and then the <MEAS DISP> page will be displayed on the
screen shown as figure 3‐1.
Figure 3‐1Measure Display
The following functions can be achieved by touching the related key in soft key area on this page.
MEAS SETUP (entering into the measurement setup page)
SYSTEM SETUP (entering into the system setup page)
FILE SETUP (entering into the internal file setup page)
PICKOUT SETUP (entering into the pick out setup page)
START Save (the current measurement results will be saved to U‐disk by pressing this touch
key. If there is no U‐disk inserted in the interface, the measurement results will not be saved;
if there is U‐disk, the touch key of START Save will change into STOP Save and it will stop
saving the data into U‐disk by pressing the touch key of STOP Save).
NOTE: Be sure to press STOP Save to end saving after START Save. Otherwise, the data may be
lost.
The following test condition information will be displayed in measurement/condition display zone
on this page. These conditions (except the measurement internal resistance) can be set on <

TH2683A Operation Manual Ver.1.3
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MEAS SETUP> page.
MEAS STEP.
RANGE.
OUTP VOLT.
MONI VOLT.
MEAS MODE.
INTER RES.
3.1.1 Measurement Functions
Measurable parameters on TH2683A are as follows:
Primary Parameters
R(Insulation resistance)
I(Leakage current)
Secondary Parameter
T(Time count value of each procedure)
The measurement results of primary parameters and secondary parameter are respectively
displayed in three lines in the form of large characters. The upper two lines indicate the primary
parameters, while the lower line shows the secondary parameter.
Note:
1. Settings and modifications of all functions can be taken by the following steps: 1): Touch the
corresponding function zone and then select the desired function in the soft key zone on
the right side of the screen; 2): Use arrow buttons and [ENTER] button to set and modify
the corresponding function.
2. Settings and modifications of all functions can only be taken in discharging state. Only
discharging key and start saving function response in measurement state.
3.2<MEAS SETUP>
Touch the main menu and then touch the soft key <MEAS SETUP> to enter into the <MEAS
SETUP>page shown as figure 3‐2.

TH2683A Operation Manual Ver.1.3
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Figure 3‐2Measurement Setup
The OUTP VOLT, MEAS MODE, CHAR TIME, WAIT TIME, MEAS TIME, DICH TIME, MEAS SPEED,
RANGE SET, LOCK RANGE, CONT CHEC, OPEN CLR and other functions can be set on this page.
3.2.1 OUTP VOLT
This function is used for setting the voltage of the instrument output terminal.
Operation Procedures One for setting the OUTP VOLT:
1. Touch this key to select this option and then the color of this option will become the color of
the cursor.
2. Touch this key again to enter into the soft keyboard and then input the required voltage and
voltage range of 1~1000V (TH2683A four‐digit significant figures), 1~500V (TH2683B
four‐digit significant figures) through number soft keyboard.
Operation Procedures Two for setting the OUTP VOLT:
Touch the output voltage zone needs to be modified on the screen and the following items will
be displayed in the soft key zone.
↑↑（+ +）
This key is the increase rough adjustment key of output voltage (set value). Touch this key
and then the voltage will increase according to the sequence of the common voltage point.
The commonly used several default voltage points of the instrument are: 1V, 10V, 25V, 50V,
75V, 100V, 125V, 150V, 200V, 250V, 500V (TH2683B), 750V (TH2683A), 1000V (TH2683A).
↑（+）
This key is the increase fine adjustment key of output voltage (set value). Touch this key and
then the voltage will increase by 1V.
↓（‐）
This key is the decrease fine adjustment key of output voltage (set value). Touch this key and
then the voltage will decrease by 1V.

TH2683A Operation Manual Ver.1.3
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↓↓（‐‐）
This key is the decrease rough adjustment key of output voltage (set value). Touch this key
and then the voltage will decrease according to the sequence of the common voltage point.
The commonly used several default voltage points of the instrument are: 1V, 10V, 25V, 50V,
75V, 100V, 125V, 150V, 200V, 250V, 500V (TH2683B), 750V (TH2683A), 1000V (TH2683A).
3.2.2 MEAS MODE
This function is used for setting the measurement mode of the instrument.
Steps for setting the MEAS MODE:
Touch the corresponding zone. The following items will be displayed in the soft key zone.
SINGLE
It is used for setting the measurement mode of the instrument as SINGLE.
CONTI
It is used for setting the measurement mode of the instrument as CONTI.
Touch the corresponding key in soft key zone to select the relevant function.
3.2.3 CHAR TIME
This function is used for setting the charge time of the instrument.
Operation Procedures One for setting the CHAR TIME:
1. Touch this key to select this option and then the color of this option will become the color of
the cursor.
2. Touch this key (cursor) again to enter into the number soft keyboard, input the required
charge time (correct to 0.1s) through number soft keyboard and then press the ENTER key to
confirm and return to <MEAS SETUP> page.
Operation Procedures Two for setting the CHAR TIME:
Touch the time zone needs to be modified on the screen and the following items will be displayed
in the soft key zone.
↑↑（+ +）
Touch this key and then the instrument will increase the charge time (set value) rapidly by
10s.
↑（+）
Touch this key and then the instrument will increase the charge time (set value) by 1s.
↓（‐）
Touch this key and then the instrument will decrease the charge time (set value) by 1s.
↓↓（‐‐）
Touch this key and then the instrument will decrease the charge time (set value) rapidly by
10s.
Steps for setting the WAIT TIME, MEAS TIME and DICH TIME are the same as CHAR TIME. The
setting range of CHAR TIME, WAIT TIME, MEAS TIME and DICH TIME is 0~999s. When the time is
set as 0s, this step (details for measurement procedures please refer to 3.4.2)is closed.

TH2683A Operation Manual Ver.1.3
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3.2.4 MEAS SPEED
This function is used for setting the measurement speed of the instrument.
Steps for setting the MEAS SPEED:
Touch the corresponding zone. The following items will be displayed in the soft key zone.
FAST
It is used for setting the MEAS SPEED as FAST.
SLOW
It is used for setting the MEAS SPEED as SLOW.
Touch the corresponding key in soft key zone to select the relevant function.
3.2.5 RANGE SET
This function is used for setting the range selection mode of the instrument.
Steps for setting the RANGE SET:
Touch the corresponding zone. The following items will be displayed in the soft key zone.
AUTO
It is used for setting the range selection mode as AUTO.
LOCK
It is used for setting the range selection mode as LOCK.
Touch the corresponding key in soft key zone to select the relevant function.
3.2.6 LOCK RANGE
This function is used for selecting the lock range of the instrument.
Steps for setting the LOCK RANGE:
Touch the corresponding zone. The following items will be displayed in the soft key zone.
1mA
It is used for setting the LOCK RANGE as AUTO.
100UA
It is used for setting the LOCK RANGE as 100UA.
10uA
It is used for setting the LOCK RANGE as 10uA.
1uA
It is used for setting the LOCK RANGE as 1uA.
More
Touch this key and then the following items will be displayed in the soft key zone:
100nA
It is used for setting the LOCK RANGE as 100nA.
10nA
It is used for setting the LOCK RANGE as 10nA.
More

TH2683A Operation Manual Ver.1.3
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Return.
Touch the corresponding key in soft key zone to select the relevant function.
NOTE: This option can be modified only when the RANGE SET is set as LOCK.
3.2.7 CONT CHEC
This function is used for setting the contact check of the instrument. As the unique contact check
function of TH2683A/TH2683B, this function can well identify the contact performance of
components for capacitance, cable and other capacitive materials and reduce the occurring of
error test. In addition, the contact check will not increase any measurement time.
When the CONT CHEC function is set as ON, NO CONT (NO CONTACT), not R or Iwill be displayed
on the screen if the instrument is in test mode and no capacitive material is detected.
When the CONT CHEC function is set as OFF, the instrument will test the value directly, not check
the capacitive material.
Steps for setting the CONT CHEC:
Touch the corresponding zone. The following items will be displayed in the soft key zone.
ON
It is used for setting the CONT CHEC as ON.
OFF
It is used for setting the CONT CHEC as OFF.
Touch the corresponding key in soft key zone to select the relevant function.
NOTE: The contact check function is useful when testing capacitive materials and the capacity is
larger than 100pF.
3.2.8 OPEN CLR
This function is used for operating open clear of the instrument.
Steps for setting the OPEN CLR:
Touch the corresponding zone. The following items will be displayed in the soft key zone.
ON
It is used for setting the OPEN CLR as ON. If the open clear is successful, the OPEN CLR state
changes to ON; if the open clear is failing, the OPEN CLR state keeps OFF.
OFF
It is used for setting the OPEN CLR as OFF.
Touch the corresponding key in soft key zone to select the relevant function.
NOTE:
1. If the user operates the open clear successfully, the clear base used in the instrument
is the base obtained when operating this open clear; if the user operates the open clear
unsuccessfully or sets the OPEN CLR as OFF, the clear base used in the instrument is the
Factory Default.
2. When operating open clear, the user must conform to the condition described in
Chapter One—“Environment”, pull out all the test lines in test terminals and heat the
instrument for more than 30 minutes, otherwise it may result in inaccurate clear base and

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then affect the accuracy of measurement results.
3.2.9 Average
This function is used for setting the test average times of the instrument. The set range is 1~199.
Operation Procedures One for setting the CHAR TIME:
1. Touch this key to select this option and then the color of this option will become the color of
the cursor.
2. Touch this key (cursor) again to enter into the number soft keyboard, input the required
average times and then press the ENTER key to confirm and return to <MEAS SETUP> page.
Operation Procedures Two for setting the CHAR TIME:
Touch the average zone needs to be modified on the screen and the following items will be
displayed in the soft key zone.
↑↑（+ +）
Touch this key and then the instrument will increase the average times (set value) rapidly by
10.
↑（+）
Touch this key and then the instrument will increase the average times (set value) by 1.
↓（‐）
Touch this key and then the instrument will decrease the average times (set value) by 1.
↓↓（‐‐）
Touch this key and then the instrument will decrease the average times (set value) rapidly by
10.
NOTE:
1. When the MEAS TIME is set as 0s (i.e. this procedure is set as OFF), the Average
times can be set as 1~999.
2. When the MEAS TIME is not set as 0s (i.e. this procedure is set as ON), the set value
of the Average times is subject to the MEAS TIME. Specifically, the following restriction
rules are required:
(1) When the MEAS SPEED is set as SLOW, it takes 0.06s to make a measurement, so the
restrictive relation between the Average times and the MEAS TIME is:
Average times ×0.06 <= MEAS TIME
(2) When the MEAS SPEED is set as FAST, it takes 0.03s to make a measurement, so the
restrictive relation between the Average times and the MEAS TIME is:
Average times ×0.03 <= MEAS TIME
3. For the same reason, when setting the MEAS TIME, the above restriction rules are
also required.
3.2.10MEAS DISP
This function is used for setting the MEAS DISP of the instrument as ON/OFF.
Steps for MEAS DISP:
Touch the corresponding zone. The following items will be displayed in the soft key zone.