Tonghui TH2822D User manual

Model TH2822D/E
Dual Handheld LCR Meter
Instruction Manual V.1.0.0

1
Safety Summary
The following safety precautions are
applicable to both operating and
maintenance personnel and must be
observed during all phases of operation,
service, and repair of this instrument.
DO NOT OPERATE IN A FLAMMABLE OR
EXPLOSIVE ATMOSPHERE
Do not operate the instrument in the
presence of much dust, direct sunlight, high
humidity, strong electromagnetic radiation,
etc.
NON-PROFESSIONALS SHUOLD NOT OPEN
THE REAR COVER
Maintaining, substituting parts or adjusting
the instrument should be made by
professional maintenance personnel. Please
contact relevant distributor or Tonghui’s
after-sale service department.
DO NOT REMOVE OR MODIFY THE
INSTRUMENT

2
Some replacements and unauthorized
modifications might cause irreversible
damage to the instrument.
SAFETY WARNING
Strictly follow the relevant safety statements in
this manual involving safety, personnel injury,
damage to the instrument, operation and
environmental conditions causing poor test.

3
Safety Guidelines
To ensure that you use this device safely,
follow the safety guidelines listed below:
This meter is for indoor use, altitude up to
2,000 m. For short-time outdoor use,
precautions should be taken to avoid direct
sunlight, water and moisture,
electromagnetic radiation, dust and
explosion.
The warnings and safety precautions should
be read and well understood before the
instrument is used.
Use the meter only as specified in this
manual.
Confirm that the circuits have been powered
off and all capacitors in the circuits been
discharged before measuring in-circuit
components.
Discharge all charging elements, such as
capacitors, before testing.
The power for the meter is supplied with a
single standard 8.4 V battery. But also a line

4
operation is possible using a power adapter
of 12VDC/150mA. If a power adapter is
selected, please be sure to meet the safety
requirements of a relevant IEC standard.
The battery using in TH2822D/E is
rechargeable. Do not charge non-
rechargeable batteries.
Safety Symbols
This symbol is a warning and
indicates that the user should refer to
the operating instructions located in
the manual.
D C power
Indicates inside pin is positive (+),
outside is negative (-) .

5
Environmental Conditions
Operating Environment 0 °C to 40 °C
Storage Humidity 0 – 80% R.H.
Storage Environment -20 °C to +50 °C
Pollution degree 2

6
Contents
Safety Summary ........................................................1
Safety Guidelines......................................................3
Introduction ...............................................................9
Package List ............................................................10
Front Panel Overview .............................................12
Front Panel Display Descriptions.................................. 13
Front Panel Buttons ...................................................... 15
Button Function Definition............................................. 16
LCD Display Overview.................................................. 17
LCD Display Descriptions ............................................. 17
Special Display Indicators............................................. 20
Test Port ....................................................................... 21
Powering Instrument ..............................................22
Installing Battery ........................................................... 23
Connecting External Power Source .............................. 25
Low Battery Indication .................................................. 27
Backlight Display .......................................................... 28
Charge Display ............................................................. 30

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Operation Instruction..............................................32
Data hold mode (HOLD) ............................................... 32
Data Record Mode (REC)............................................. 33
PRI Select Mode........................................................... 36
SEC Select Mode ......................................................... 37
Test Frequency（FREQ）............................................ 37
Test Electric Level ........................................................ 38
Tolerance Mode (TOL) ................................................. 39
Auto LCR Mode ............................................................ 42
Measurement Rate (RATE) .......................................... 44
Series/parallel Equivalent Mode ................................... 44
Utility Menu (UTIL) ........................................................ 46
Clear Functions (CLEAR) ............................................. 61
Remote Control（RMT）.............................................. 66
Fuse Detection.............................................................. 66
Quick Start Guide....................................................68
CAUTION...................................................................... 68
Inductance Measurement ............................................. 69
Capacitance Measurement ........................................... 72
Resistance Measurement ............................................. 74
Impedance Measurement ............................................. 77

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Direct Current Resistance Measurement...................... 78
Remote Communication.........................................78
Connecting Instrument to PC........................................ 79
Virtual Serial Port Configuration.................................... 81
RMT Operation ............................................................. 82
Command Protocols ..................................................... 84
Specifications..........................................................99
General Specifications ................................................ 100
Accuracy Specifications.............................................. 104
Maintenance ..........................................................115
Service........................................................................ 115
Cleaning...................................................................... 116
Limited Warranty...................................................117

9
Introduction
TH2822D/E is designed for measuring inductance,
capacitance and resistance of components. The
instrument can be powered by an 8.4V rechargeable
battery or external power adapter. This meter is not
only applicable to the application occasion of bench
meters but also conveniently used in the flow and
handheld measurement occasions.
TH2822D/E provides the primary parameter of up to
40,000 readings, secondary parameter of 0.0001
reading resolution, maximum measuring frequency up
to 100kHz, constant internal resistance of 100Ωand
three optional testing levels. The auto range can
rapidly display the measuring results and
automatically choose the desirable testing parameters
in accordance with components properties. Its
measuring accuracy is unimaginable up to 0.1%.
Front panel push buttons maximize the convenience
of function, such as FREQ, LEV, TOL and RATE.
Tolerance mode can sort components, record mode
aid to capture readings, convenient open/short clear
function improve the measuring accuracy, utility menu

10
help you easily take the selections of the key tone,
auto power-off and storage.
TH2822D/E is equipped with the function of remote
communication. The test data can be transferred to
PC through a Mini USB connection, great for
applications that require remote control and data
acquisition.
Package List
TH 2822D/E is equipped with the following contents：
TH2822D/TH2822E handheld LCR meter
Instruction manual
Mini USB Interface Cable
Red / Black Banana plugs—Crocodile clip
Test Leads
Short-circuit plate
8.4V rechargeable battery
*AC adapter
*TH26027A Kelvin clip test leads
* TH26009C SMD test tweezers
*TH26029C SMD test tweezers

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* This can be purchased as optional accessories. All
contents are subject to actual package list or box.
Please locate them from the original packaging to
ensure nothing is missing. If in the case that an item is
missing, please contact Tonghui or relevant distributor
immediately.

12
Front Panel Overview
Figure 1 - Front Panel Display (model TH2822E shown)
1
2
3
5
6
8
4
7
13
9
10
11
12
14

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Front Panel Display Descriptions
1. LCD display
2. USB communication / *Back light button
3. Power ON/OFF button
4. Frequency and record mode selection
5. Secondary display mode (D/Q//ESR, etc.)/
Test Level
6. Primary display mode (L/C/R/Z/DCR, etc.)/
auto LCR selection
7. Rate/equivalent mode selection
8. Hold mode/ utility menu
9. Tolerance mode/ utility arrow key
10. Open/short clear/ utility arrow key
11. 5-terminal test sockets (direct measurement
on lead components or use of test fixture)
12. 3-terminal test jacks (for use of Banana plugs
—Crocodile clip Test Leads)
13. Standard mini USB port (for remote control)
14. 12VDC external power input (use with an
external power adapter)

14
NOTE: Refer to the adapter’s label for input
parameters of it. Rated output parameter: 12VDC,
150mA, 4mm.
NOTE: Use with included power adapter only or
purchase the specified adapters from Tonghui. Use
with improper power adapters may damage
instrument.
NOTE: Internal battery supply will be
automatically cut off since the normal supply of
external power. If the battery is rechargeable
(TH2822D/E), the external power will charge the
battery simultaneously. TH2822D/E is installed an
independent charging controller---
— charging control
is still done even at the state of power-off.
WARNING: Before connecting an external power
adapter, be sure that the polarity matches the (+)
and (-) labels as indicated inside the battery
compartment. If it is not installed correctly and
connected to an external power adapter, it might
cause severe damage to the instrument.
WARNING: If the battery is rechargeable
(TH2822D/E), please be sure that the polarity
matches the (+) and (-) labels as indicated inside
the battery compartment ant the battery is
rechargeable. DO NOT charge the non-
rechargeable battery!

15
Front Panel Buttons
With the exception of the power button, all front panel
buttons have specific colored labels on them. They
are all marked in black, blue or orange color. Each
color has a specific representation, as described
below:
Black—the primary function, meaning that
function will be set or configured upon pressing it.
Orange—the secondary function, it means that
the function will be set or configured if that button is
pressed and hold down for 2 seconds.
Blue—the utility function, the function will be set
or configured if the UTIL button is pressed and hold
down for a long time. See “Utility Menu” section for
details.
NOTE: In the button operational instruction, we
will use the button name to express the button
operation without differentiating the type of button;
Pay attention to the difference between “long press”
and “press”.

16
HOLD
FREQ
PRI
LEV
UTIL
CLEAR
RMT
PS
TOL
RATE
AUTO
REC
SEC
1 2 3 4
8
95
7 6
Figure 2 –Button Display
Button Function Definition
1．Power ON/OFF Button
2．Frequency/Record Mode Button
3．Remote Control/Backlight Button
4．Readings Hold/Utility Menu Button
5．Tolerance mode/ Menu Selection Button
6．Clear/ Menu Selection Button
7．Rate/Equivalent Mode Button
8．LCR Primary Parameters/Auto LCR
9．Secondary Parameters Selection Button/LEV

17
LCD Display Overview
1
25 910
12
14
16
202127
28
29
83
232425
4
15
11
13
67
22
17
18
19
26
LCR
ESR
MAXAVGMIN θQ
AUTO D
2105%
deg
kHz
PAL
SER
μH
pF
μ
RMT
Mk
TOL DH
n
n
@OFF
Z
FASTSLOW
D
nGo
Ar0.1V0.3V0.6V
30
Ω
%
Ω
Figure 3 - LCD Indicator Display
LCD Display Description
1. LDCRZ – Primary parameters display
2. MAX – Maximum reading indicator in the
record mode

18
3. AVG – Average reading indicator in the record
mode
4. MIN – Minimum reading indicator in the record
mode
5. AUTO – Automatic LCR indicator
6. – Phase angle indicator for secondary
display
7. D – Dissipation indicator
8. Q – Quality factor indicator
9. – Secondary parameter display
10. – Beeper tone indicator for tolerance
mode
11. deg – Phase angle () units indicator
12. – ESR(ohm) units indicator
13. % - Percentage indicator (in tolerance mode)
14. kHz – Frequency units indicator
15. PAL – Parallel mode indicator
16. SER – Series mode indicator
17. – Inductance units (L) indicator
18. –Capacitance units (C) indicator
19. Mk– Resistance(R) /impedance units
indicator
20. RMT – Remote mode indicator
21. – Primary parameter display