Tonghui TH2822D Manuale utente
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
7
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
8
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
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1
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