Tonghui TH2618B, TH2775B, TH2810B Operation Manual
OPERATION MANUAL
TH2810B LCR METER
TH2618B CAPACITANCE METER
TH2775B INDUCTANCE METER
1
NOTICE
Thanks for purchasing and using our product. Please confirm the product set
and accessories with shipment list. If there is any unconformity, please contact
sales office or Tonghui Company as soon as possible to protect your benefits!
DESCRIPTION
Refer to descriptions of front and rear panels in § 1.6 on P 1-6.
WARNING
To avoid electric shock hazard, please make sure that phase line, zero line and
ground line are connected correctly before the instrument is plugged into an
outlet. The instrument chassis and cabinet must be connected to a safety earth
ground to avoid the cover to be electrified.
WARNING
Take care not to contact the parts with 220V when making maintenance to avoid
the hazard of electrical shock. It is absolutely prohibited to perform normal
measurement when the cover is removed (except for maintenance and
adjustment).
WARNING
Do not plug in or out component or connecting line when the instrument is
switched on to avoid unnecessary damage to component or instrument. It is not
permitted to turn on or off instrument continuously to avoid causing program
inordinate, which will lose proofread and saved data.
ATTENTION
The calibration of the instrument should be done by professional personnel.
Should trouble occur in EEPROM 28C64, it must be returned to the company to
avoid losing accuracy calibration data.
DECLARATION
We are likely to improve our equipment without extra explanation, including the
performance, functions, inner structure, appearance, accessories, and packing.
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CONTENTS
Chapter 1 General introduction ............................................................................................5
1.1 Brief introduction......................................................................................................5
1.2 Specifications ............................................................................................................5
1.2.1 Measurement terminals .....................................................................................5
1.2.2 Measurement parameters...................................................................................6
1.2.3 Display range ....................................................................................................6
1.2.4 Measurement accuracy......................................................................................6
1.2.4.1 Maximum and minimum values for different ranges.................................... 7
1.2.4.2 Deviation factor ks ........................................................................................7
1.2.4.3 Level factor kv ..............................................................................................7
1.2.4.4 Frequency factor kf .......................................................................................7
1.2.5 Test signal frequency ........................................................................................7
1.2.6 Test signal level.................................................................................................7
1.2.7 Output impedance of measurement signal ........................................................7
1.2.8 Measurement speed...........................................................................................8
1.2.9 Inputting data range...........................................................................................8
1.3 Operating environment..............................................................................................8
1.3.1 Temperature & Humidity ..................................................................................8
1.3.2 Power ................................................................................................................8
1.3.3 Warm-up ...........................................................................................................8
1.3.4 Notice ................................................................................................................9
1.4 Dimensions and weight.............................................................................................9
1.5 Function index...........................................................................................................9
1.6 Panel........................................................................................................................10
1.6.1 Rear panel description.....................................................................................10
1.6.2 Front Panel Description...................................................................................11
Chapter 2 Operation instruction .........................................................................................14
2.1 Keyboard and functions introduction......................................................................14
2.2 Function conversion in “measurement” state..........................................................16
2.2.1 Measurement parameters.................................................................................16
2.2.2 Measurement frequency ..................................................................................17
2.2.3 Test signal level...............................................................................................17
2.2.4 Display mode ..................................................................................................17
2.2.4.1 Direct.......................................................................................................17
2.2.4.2 △% .........................................................................................................18
2.2.5 Range mode.....................................................................................................18
2.2.5.1 Range definition and its range.................................................................18
2.2.5.2 Range Hold..............................................................................................19
2.2.6 Measurement speed.........................................................................................19
2.2.7 Clear (Correction) ...........................................................................................20
2.3.1 Alarm ..............................................................................................................22
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2.3.2 Trigger (continuous/single) .............................................................................22
2.3.3 Equivalent model ............................................................................................22
2.3.4 Serial interface ................................................................................................23
2.3.5 Sorting mode ...................................................................................................28
2.3.5.1 Sorting procedure....................................................................................29
2.3.5.2 Handler interface.....................................................................................30
2.3.6 Signal source resistance ..................................................................................32
2.3.7 Key lock ..........................................................................................................32
2.3.7.1 Entering key lock ....................................................................................32
2.3.7.2 Exiting key lock ...................................................................................... 32
2.3.7.3 Notices in the state of key lock ...............................................................33
2.3.8 Safeguard ........................................................................................................33
2.4 Parameter setup .......................................................................................................33
Chapter 3 Component measurement ...............................................................................35
3.1.1 Notices ............................................................................................................35
3.1.2 Common component measurement.................................................................35
3.2.1 Measurement of Capacitor ..............................................................................37
3.2.2 Connecting the Component.............................................................................37
Chapter 4 Packing and Warranty .......................................................................................39
4.1 Packing....................................................................................................................39
4.2 Warranty..................................................................................................................39
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Chapter 1 General introduction
This chapter provides brief and concise description of instrument’s
specifications and functions.
1.1 Brief introduction
As a newly developed instrument, TH2810B Series Component Parameter
Testers offer fast, reliable, and versatile testing at a low cost. It can
automatically measure component parameters, including inductance (L),
capacitance (C), resistance (R), impedance (Z), quality factor (Q), and tangent
of dissipation angle (D), etc. This instrument, which merges powerful functions,
excellent performances and simple operation into a whole, can satisfy both the
need for fast test in factories, and the requirement of high precision and stable
measurement in laboratory.
Compared with general component parameter testers, instruments of TH2810B
make improvements in the following aspects:
1. To meet requirements in different situations, the instrument has two sets of
selection programs, and parameter setup is of many digits and high
resolution rate. The instrument can be connected with automatic meter
through interfaces to realize automatic measurement.
2. The instrument provides RS232C interface to effectively communicate with
computer and make it possible to remotely control and collect data.
3. The instrument applies the design method of invariable resistance of signal
source, and it ensures that voltage or current signal in one tested
component does not change with the adjustment of range, to avoid being
hard to select range for tested component which is at the edge of range.
4. The instrument has the functions of locking key and saving state. It can
reduce workers’ incorrect operation, and make personalized default state
possible.
TH2810B Series Component Parameter Testers include TH2810B LCR meter,
TH2618B capacitance meter, and TH2775B inductance meter. And they differ in
measurement parameters (referring to Table 1-1 Measurement Parameters
Table in § 1.2.2). TH2618B and TH2775B only have some functions of TH2810B,
so this manual is applicable to TH2810B and the contents which are only
applicable to TH2618B or TH2775B are marked.
1.2 Specifications
1.2.1 Measurement terminals
There are five terminals, namely HD, HS, LS, LD and GND.
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1.2.2 Measurement parameters
Model Parameter
TH2810B L-Q, C-D, R-D, Z-Q
TH2618B C-D, R-D
TH2775B L-Q, R-Q
Table 1-1.Measurement Parameters
L: inductance C: capacitance R: resistance
Z: impedance Q: quality factor D: tangent of dissipation angle
The instrument provides two kinds of equivalent circuits, series connection and
parallel connection, in which Z, D and Q have the same values while C, L and R
have different values. The conversion relations between the two equivalent
circuits are discussed in Table 2-4 Conversion Table of Circuits in Series and
Parallel Connections on P 2-11.
1.2.3 Display range
L: 0.01µH ~ 99999H
C: 0.01pF ~ 99999µF
R/Z: 0.0001Ω ~ 99999MΩ
D: 0.0001 ~ 9.999
Q: 0.0001 ~ 9999
Δ%: -9999% ~ 9999%
1.2.4 Measurement accuracy
C: 0.1% (1+Cx/Cmax+Cmin/Cx) (1+Dx) (1+ks+kv+kf);
L: 0.1% (1+Lx/Lmax+Lmin/Lx) (1+1/Qx) (1+ks+kv+kf);
Z: 0.1% (1+Zx/Zmax+Zmin/Zx) (1+ks+kv+kf);
R: 0.1% (1+Rx/Rmax+Rmin/Rx) (1+Qx) (1+ks+kv+kf);
2
D: ±0.0010 (1+Zx/Zmax+Zmin/Zx) (1+Dx+Dx
Q: ±0.0015 (1+Zx/Zmax+Zmin/Zx) (Qx+1/Qx) (1+ks+kv+kf).
Notes: 1. D and Q are absolute deviations and others are percent deviations,
Dx=1/Qx;
2. Those with subscript x mean measurement values of the parameters;
those with subscript max mean maximum values and min mean
minimum values;
3. ks is the speed factor; kv is the level factor and kf is the frequency
factor;
4. In order to gain high measurement accuracy, you should make open
and short correction again when the test fixture or conditions are
changed.
) (1+ks+kv+kf);
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1.2.4.1 Maximum and minimum values for different ranges
Parameter
Cmax
Cmin 1500pF 1250pF 150pF 15pF
Lmax 1590H 1325H 159H 15.9H
Lmin 3.2mH 2.6mH 0.32mH 0.032mH
Zmax/
Rmax
Zmin/ Rmin
100Hz 120Hz 1kHz 10kHz
800μF 667μF 80μF 8μF
Table 1-2. Maximum and Minimum Values
Frequency
1.2.4.2 Deviation factor ks
slow speed: ks =0 fast speed: ks =10
1.2.4.3 Level factor kv
When V=1V, kv =0;
When V = 0.3V, kv = 1;
When V = 0.1V, kv = 4.
1MΩ
1.59Ω
1.2.4.4 Frequency factor kf
When f = 100 Hz, 120 Hz or 1 kHz, kf = 0;
When f = 10 kHz, kf = 0.5.
1.2.5 Test signal frequency
Test signal: sine wave
Four frequencies are available: 100Hz, 120 Hz, 1 kHz, 10 kHz
Accuracy: 0.02%.
1.2.6 Test signal level
Three levels are available: 0.1V, 0.3V, 1.0V (effective value)
Accuracy: ±10% (The set value of the measurement level is the value set when
test terminals are opened HD and HS should be connected)
Due to the output impedance of the signal source, the actual level applied upon
the component under test may be different from the set value.
1.2.7 Output impedance of measurement signal
Output impedance: 30 Ω (default value) and 100 Ω, without requirement of
accuracy.
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1.2.8 Measurement speed
Fast: around 15 times/sec.;
Slow: around 4.5 times/sec.;
The actual speed differs with different measurement conditions such as
frequency, component value, display mode, measurement mode, once, range
mode, RS232 interface and so on.
The typical speeds for Fast, Medium and Slow are given under the following
measurement conditions:
· Frequency: 1 kHz or 10 kHz;
· Measurement mode: continuous;
· Range mode: Hold;
· Display parameters: C/D;
· RS232 interface: only receiving allowed.
1.2.9 Inputting data range
Parameter Code Range
0.0001μH～99999H
0.0001pF～99999μF
0.0001Ω ～99999MΩ
-9999%～9999%
0～99999
Nominal value
High or low limit
Dissipation value
Quality factor
Table 1-3. Sorting Setup Range
L
C
R/|Z|
D/Q
1.3 Operating environment
1.3.1 Temperature & Humidity
Temperature: 00C ~ 400C
Humidity: ≤85％RH
Accurate temperature: 18
Accurate humidity: ≤80％RH
0
C ~ 280C
1.3.2 Power
Voltage: 220V （1±10％）
Frequency: 50Hz（1±5％）
Power: around 25W
1.3.3 Warm-up
After warming up for 10 minutes, the instrument can start to measure.
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1.3.4 Notice
z Do not operate the instrument in the conditions of much dust, vibration,
strong sun shining, or
z Even the instrument has made special treatment for different signals
(especially AC power noise); please operate in the condition of low noise. If
unavoidable, please install power filter.
z If the instrument hasn’t been used for a long time, please pack with original
packing or sealed plastic bag and paper case, and store in the ventilated
0
room with temperature of -10
z If DUT is capacitor, even the instrument has specially-designed anti-shock
circuit; the rest electricity in tested capacitor should be given out to be clear
before measurement, which is good for the instrument’s reliability and
safety.
C ~ 400C and humidity of≤85％RH.
1.4 Dimensions and weight
Dimensions: around 350(W) by 110(H) by 340(D) (mm) (without packing)
Weight: around 3.5 kg (without packing)
1.5 Function index
No. Name Function Description Referring to
Measurement
1
parameter
Measurement
2
frequency
Measurement level to select three measurement
3
Measurement mode to display measurement
4
Range mode to automatically select range
5
Measurement speed Accuracy and stability are
6
Clear & proofreading to clear distribution
7
8 Alarm to select whether to alarm or §2.3.1 on P2-10
to optionally select different
measurement parameters
(§1.2.2）
to select four measurement
frequencies (§1.2.5）
levels (§1.2.6)
value in number or
percentage of deviation
or hold in one range
lower in fast speed than in
slow speed
parameters’ effect to
measurement
§2.2.1 on P2-3
§2.2.2 on P2-4
§2.2.3 on P2-4
§2.2.4 on P2-4
§2.2.5 on P2-5
§2.2.6 on P2-7
§2.2.7 on P2-8
9
9
10
11
12
13
14
15
16
not when sorting result is
qualified
Trigger to select trigger mode:
§2.3.2 on P2-10
continuous or single
Equivalent type to select circuit’s equivalent
§2.3.3 on P2-10
type: series connection or
parallel connection
Serial interface to select whether to send data
§2.3.4 on P2-11
outside through RS232
interface
Sorting mode to select sorting mode: P1
§2.3.5 on P2-16
mode or P3 mode
Resistance of signal
source
Key lock to lock keys and keep
to select output resistance of
signal source: 30 Ω or 100 Ω
§2.3.6 on P2-19
§2.3.7 on P2-19
operating state
Comparator and
output interface
HANDLER
to compare and sort
comparison values and
output sorting result through
§2.3.5 on P2-16
§ 3.3.3 on P3-7
HANDLER interface to control
measurement system’s
operation structure
RS232 interface to remotely control
instrument
§2.3.4 on P2-11
§3.3.4 on P3-8
Table 1-4. Function Index
1.6 Panel
1.6.1 Rear panel description
Figure 1-1.Rear Panel Overview
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123
HANDLE口
FUSE
1A
INPUT
220V
AC
50Hz
45
RS-232C口
No. NAME FUNCTION DESCRIPTION
RS-232C serial
1
interface (9-pin)
HANDLER interface
2
(9-pin)
3 Nameplate
4 Fuse to protect the instrument, 1A
5 LINE input receptacle to connect with AC power of 220V, 50Hz
Table 1-5. Rear Panel Description
to provide serial interface between the
instrument and peripheral equipments
(referring to §2.3.4)
to provide controlling interface between the
instrument and system (referring to §2.3.5.2)
to indicate following information: License No.,
date, serial No. and manufacturer.
1.6.2 Front Panel Description
The schematic drawing of the front panel can be seen on the next page (taking
TH2810B LCR Meter as an example).
No. NAME FUNCTION DESCRIPTION
to display the measurement values of C, L, Z
Main parameters (or
1
Display A in this
manual)
Units of main
2
parameters
Sub parameters (or
3
Display B in this
manual )
4
5 State indication Refer to §2.1 on P2-1.
6 Frame terminal (GND)
7 Test terminals
and R. Two display modes are available:
direct, and percent deviation %. It can also △
display information when parameters are
being set.
to indicate the units of main parameter in
direct mode
to display the measurement values of D and
Q. It can also display information when
parameters are being set.
to be used for measurements that requires
guarding. The Frame Terminal is tied to the
instrument’s chassis, and it is connected with
the protective earth ground of power supply.
to provide 4-terminals for measurement of
component:
HD (High Drive of current): Test signal is
output through HD. Voltage, frequency and
waveform of test signal can be measured at
HD by voltmeter, frequency meter and
oscillograph, etc.
HS (High Sense of voltage): sample the high
potential of the device under test.
LS (Low Sense of voltage): sample the low
11
potential of the device under test.
LD (Low Drive of current): the current flowing
through the device under test is sent to the
current measuring part of instrument.
HD and HS should be connected to one lead of
the device under test and LD and LS should be
connected to another lead.
TH2810B LCR meter
Trade mark of Tonghui
8
& model
TH2618B capacitance meter
TH2775B inductance meter
All the function statees of the instrument can
9 Keyboard
be selected and controlled through the
7-button keyboard (referring to §2.1 on
P2-1).
10 Sorting indication to indicate the sorting result
Power ON/OFF Switch. In ON position, all
11 Power ON/OFF
operating voltages are applied to the
instrument. In OFF position, no operating
voltages are applied to the instrument.
Table 1-6. Front Panel Description
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