Unit UTE9800+ Series User manual

User’s Manual
UTE9800+ Series Smart Digital Power Meter

User’s Manual UTE9800+ Series Smart Digital Power Meter
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Preface
Thank you for purchasing this brand new UNI-T product. In order to use this product safely and correctly, please
read this manual thoroughly, especially the safety notes.
After reading this manual, it is recommended to keep the manual at an easily accessible place, preferably close
to the device, for future reference.
Copyright Information
Copyright is owned by Uni-Trend Technology (China) Limited.
UNI-T products are protected by patent rights in China and foreign countries, including issued and pending
patents.
UNI-T reserves the rights to any product specification and pricing changes.
UNI-T reserves all rights. Licensed software products are properties of Uni-Trend and its subsidiaries or suppliers,
which are protected by national copyright laws and international treaty provisions. Information in this manual
supersedes all previously published versions.
UNI-T is the registered trademark of Uni-Trend Technology (China) Co., Ltd.
Warranty Service
UNI-T warrants that the product will be free from defects for one year. If the product is re-sold, the warranty
period will be from the date of the original purchase from an authorized UNI-T distributor. Probes, other
accessories, and fuses are not included in this warranty.
If the product is proved to be defective within the warranty period, UNI-T reserves the rights to either repair the
defective product without charging of parts and labor, or exchange the defected product to a working equivalent
product. Replacement parts and products may be brand new, or perform at the same specifications as brand new
products. All replacement parts, modules, and products become the property of UNI-T.
The “customer” refers to the individual or entity that is declared in the guarantee. In order to obtain the
warranty service, "customer" must inform the defects within the applicable warranty period to UNI-T, and to
perform appropriate arrangements for the warranty service. The customer shall be responsible for packing and
shipping the defective products to the designated maintenance center of UNI-T, pay the shipping cost, and
provide a copy of the purchase receipt of the original purchaser. If the product is shipped domestically to the
location of the UNI-T service center, UNI-T shall pay the return shipping fee. If the product is sent to any other
location, the customer shall be responsible for all shipping, duties, taxes, and any other expenses.
Guarantee Limit
This warranty shall not apply to any defects or damages caused by accidental, machine parts’ wear and tear,
improper use, and improper or lack of maintenance. UNI-T under the provisions of this warranty has no
obligation to provide the following services:

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a) Any repair damage caused by the installation, repair, or maintenance of the product by non UNI-T service
representatives.
b) Any repair damage caused by improper use or connection to an incompatible device.
c) Any damage or malfunction caused by the use of a power source which does not conform to the requirements
of this manual.
d) Any maintenance on altered or integrated products (if such alteration or integration leads to an increase in
time or difficulty of product maintenance).
This warranty is written by UNI-T for this product, and it is used to substitute any other express or implied
warranties. UNI-T and its distributors do not offer any implied warranties for merchant ability or applicability
purposes.
For violation of this guarantee, regardless of whether UNI-T and its distributors are informed that any indirect,
special, incidental, or consequential damage may occur, UNI-T and its distributors shall not be responsible for any
of the damages.
Safety Instructions
To avoid possible electric shock and personal safety problem, please follow the instructions below. Uni-Trend will
not be responsible for the personal safety and property damage caused by the user's failure to comply with the
following terms.
1. Do not use the damaged instrument. Before using, please check the outer shell whether has crack or plastic
lack. Do not use the instrument in flammable and explosive gas, steam or dusty environment.
2. Only trained personnel can execute maintain procedure to avoid fire and personal injury; there must be
personnel supervision in use, otherwise it should be turned off the instrument and its power supply.
3. Before connecting the instrument, observe all marks on the instrument to learn more about the rated value,
warnings and notices.
4. The power supply of the instrument is 100-240VAC, 50/60Hz.
5. The instrument is equipped with three core power cord, only use the power cord provided by the
manufacturer to avoid accidental injury; do not plug and unplug the power cord when the instrument is
energizing; do not put other objects on the power cable when using it, and ensure that the power cable is
away from heat source.
6. Instrument grounding：To prevent the risk of electric shock, please connect the power ground wire.
7. Do not install substitutes or perform unauthorized changes; do not use the instrument when the outer shell
opened or looseness.
8. During the test, do not touch terminal blocks and test line to prevent from electric shock; do not plug the
communication port; do not put article on the instrument to protect the instrument, especially pay attention

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not to let metal chips, water, oil and other liquids into the internal the interior of the instrument, otherwise, it
may cause unpredictable and serious consequences.
9. Avoid exposed circuits, do not touch exposed connectors and components after the power is turned on.
10. Use the appropriate fuse, only with the fuse type and rating indicator specified for this product.
11. Do not use the instrument that work abnormally; if you suspect that the product has malfunctioned, let
qualified maintenance personnel to check the instrument.
12. Unplug the power cord from the power outlet if the instrument is not to be used for a long time. Please do
not pull the power cord to unplug it; if the instrument needs to move, please make sure the power line and
other connecting line is pulled out and uses the carrying handle on the side of the instrument, be gentle with
it to prevent collision.
Environmental Condition
UTE9800+ series digital power meter can only use indoors and non-condensing area, the general environmental
requirements shown as below table.
Environmental Condition
Operating Environment
5℃～40℃，20%～80%RH（non-condensing）
Accuracy guaranteed
temperature and humidity
temperature
23℃±5℃，30%～75% R.H.
Storage temperature
-10℃～50℃, non-condensing below 80% R.H.
Operating altitude
≤2000 meter
Explanation：In order to ensure the measurement accuracy, it is recommended to start the operation after half
an hour to warm-up the machine.

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Chapter 1 Inspection and Installment
1.1 Check Packing List
Check with packing list to confirm that accessories has no loss or abnormal. If there have any problem, please
contact with UNI-T distributor or manufacture.
No.
Components
Quantity
Remark
1
Digital power meter
1
UTE9802+/UTE9806+/UTE9811+
2
Power cable
1
3
RS232 communication
line
1
4
User’s manual, software
download guide
1
Explanation：After confirming that the contents of the package are consistent and there are no problems, please
keep the box and related contents properly, the instrument should meet the encasement requirements if it
returns to the factory for service.
1.2 Hand Shank
The hand shank can be adjusted. Hold the hand shank in both hands and then pull out two flanks to twist it; it
can be adjust to four positions shown as the following Figure
1. Original Position (Factory Setting) 2. Testing Position
3.Remove Hand Shank 4. Lift Position

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Chapter 2 Product Introduction
2.1 Product Overview
The smart digital power meter is an economic and portable measuring instrument. It is a multi-functional
measuring instrument which integrating voltage, current, power, power factor, frequency and harmonic wave.
The product is widely used in production, testing, evaluation and scientific research and multi-field.
UTE9800+ series include three models: UTE9802+, UTE9806+, and UTE9811+. It adopts high speed CPU for data
processing, the sampling resistance of voltage and current are all use low temperature drift resistor, therefore,
the stability and accuracy of measurement data are guaranteed.
UTE9800+ series has true RMS measurement; it can adjust to the electric parameter measurement of various
occasions such as full wave, half wave (AC/DC type) and irregular waveform. This instrument can measure
voltage (V), current (A), active power (W), apparent power (VA), voltage peak (Vpk), current peak (Apk), power
factor (PF), frequency (Hz), harmonic wave and wave crest ratio. It has perfect functions, superior performance
and simple operation.
The instrument can meet the needs of high-speed measurement in production sites, as well as laboratory and
R&D measurements. It is widely used in in the fields of lighting appliances, power tools, household appliances,
electric motors and electric heating appliances of production lines, laboratories and quality inspection
departments.
Characteristics
VA broken code screen display，reading intuitive, it adopts high speed A/D transformer and 32-bit MCU
operation.
The parameters measured in each window can be switched (UTE9806+ only).
Multi-window simultaneous display of voltage, current, power, power factor/frequency.
The voltage and current peak ratios can be measured (UTE9811+ only).
The range of voltage and current has manual range and automatic range.
AC, DC, AC+DC (T-RMS) mode (UTE9802+ only).
The harmonic measurement can be taken. The harmonic testing uses phase-locked loop (PLL)
synchronization method, and the harmonic analysis is up to 50 times (UTE9811+ only).
Average function can make the reading more stable and it suitable for measuring the load or power
with large variations.
Data upgrade period can be set. User can select a faster upgrade period according to the test needs, so
as to improve the test efficiency.
Communication interface supports RS-232 and RS-485. Communication protocol supports SCPI and
Modbus for communicating with computer and PLC.
It can freely set the upper and lower limit of current and power, the digital power meter will automatic
judge whether the test value is exceed. Sound and light alarm indication, it is convenient for batch
detection to improve the measurement efficiency (UTE9806+ can also set and check the upper and
lower limit of voltage, apparent power and power factor).

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2.2 Technical Index
* f represent the frequency of input signal in the below table.
Model
UTE9802+
UTE9806+
UTE9811+
Display
VA broken code display, 5 digits，four windows
Display
Update
Rate
0.1S, 0.25S, 0.5S, 1S, 2S, 5S
Measuri
ng
Object
V,A,W,PF/HZ
V,A,W,VA,PF,V Hz/A Hz,Vpk/
Apk
V,A,W,PF/HZ/THD/CF
Measuri
ng
Mode
AC/ DC /AC+DC(T-RMS)
AC
AC
Measuri
ng
Range
of
Voltage
3.0V-600V
0.5V-600V
3.0V-600V
Voltage
Range
75V/150V/300V/600V
60V/600V
75V/150V/300V/600V
Accurac
y of
Voltage
(1% ～
100% of
range)
DC：±(0.4% reading+ 0.1%
range+1 character）
40Hz≤f≤66Hz：±(0.4% reading+
0.1% range+1 character）
66Hz＜f≤400Hz：±(0.3%
reading+ 0.2% range+1
character）
40Hz≤f≤66Hz：±(0.4% reading+
0.1% range+1 character）
66Hz＜f≤400Hz：±(0.3%
reading+ 0.2% range+1
character）
40Hz≤f≤70Hz：±(0.4%
reading+ 0.1% range+1
character）
Voltage
Resoluti
on
0.01V/0.1V
Measuri
ng
Range
of
Current
0.5mA-20A
0.05mA-10A
5.0mA~20A
Current
Range
500mA/2A/8A/20A
50mA/100mA/10A
200mA/1A/4A/20A
Accurac
y of
Current
(1% ～
100% of
range)
DC：±(0.4% reading+ 0.1%
range+1 character）
40Hz≤f≤66Hz：±(0.4% reading+
0.1% range+1 character）
66Hz＜f≤400Hz：±(0.3%
reading+ 0.2% range+1
character）
40Hz≤f≤66Hz：±(0.4% reading+
0.1% range+1 character）
66Hz＜f≤400Hz：±(0.3%
reading+ 0.2% range+1
character）
40Hz≤f≤70Hz：±(0.4%
reading+ 0.1% range+1
character）
Current
Resoluti
on
0.1mA/1mA
0.01mA/0.1mA/1mA
1mA
Switchin
Auto/Manual
Auto/Manual
Auto

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g Range
Power
Range
1W~12kW
1W~6000W
1W~12kW
Accurac
y of
Power
（PF=1）
DC：±(0.4% reading+ 0.1%
range+1 character）
40Hz≤f≤66Hz：±(0.4% reading+
0.1% range+1 character）
66Hz＜f≤400Hz：±(0.3%
reading+ 0.2% range+1
character）
40Hz≤f≤66Hz：±(0.4% reading+
0.1% range+1 character）
66Hz＜f≤400Hz：±(0.3%
reading+ 0.2% range+1
character）
(voltage＞10% of range,
current＞1% of range,)
40Hz≤f≤70Hz：±(0.4%
reading+ 0.1% range+1
character）
Power
Resoluti
on
0.001W/0.01W/0.1W/1W
0.001W/0.01W/0.1W/1W
0.01W/0.1W/1W
Power
Factor
Range
-1.000~1.000
-1.000~1.000
-1.000~1.000
Accurac
y of
Power
Factor
±(0.004 + 0.001* reading +1
character)
±0.01
±(0.004 + 0.001* reading +1
character)
Frequen
cy
Range
DC, 40Hz～400Hz（voltage＞
10% of range）
40Hz～400Hz
（amplitude＞10%
of range）
40Hz~70Hz（voltage＞10%
of range）
Accurac
y of
Frequen
cy
±(0.1% reading +1 character)
±0.1% reading
±(0.1% reading +1 character)
Auto
Range
Voltage
Range
Increasing
Urms exceeds the
measuring range
about 110% ( CF <
2 )
Urms exceeds the measuring
range about 120%
Urms exceeds the measuring
range about 110% ( CF < 2 )
Voltage
Range
Decreasing
Urms is less than
the lower part
range about 80%
( CF < 2)
Urms is less than the lower part
range about 100%
Urms is less than the lower
part range about 80% ( CF <
2)
Current
Range
Increasing
Irms exceeds the
measuring range
about 110% ( CF <
2 )
Irms exceeds the measuring
range about 120%
Irms exceeds the measuring
range about 110% ( CF < 2 )
Current
Range
Decreasing
Irms is less than
the lower part
range about 60%
( CF < 2 )
Irms is less than the lower part
range about 100%
Irms is less than the lower
part range about 60% ( CF <
2 )
Pre-heat
ing Time
>30 min
>30 min
>30 min
Current
Peak
The maximum display 24A
The maximum display 12A
The maximum display 24A
Maximu
m of
Allowed
Input
for
Continu
Voltage 700V，Current 24A
Voltage 720V，Current 12A
Voltage 700V，Current 24A

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ous
Maximu
m of
Allowed
Input
for
Instant
1000V, 40A (1 min)
1000V, 20A (1 min)
1000V, 40A (1 min)
Input
Impeda
nce
Voltage about 2 M Ω， Current is
less than 0.02Ω
Voltage about 2 M Ω，Current is
less than 0.02Ω
Voltage about 2 M Ω，
Current is less than 0.02Ω
Upper/L
ower
Limit
Four settings for the
upper/lower limit of power and
current
Ten settings for voltage, current,
active power, apparent power
and power factor
Four settings for the
upper/lower limit of power
and current
P Hi (Power high),
P Lo(Power low),
A Hi(Current high),
A Lo(Current low)
Voltage/U Hi and Lo
Current/I Hi and Lo
Active power/P Hi and Lo
Apparent power/VA Hi and Lo
Power factor/PF Hi and Lo
P Hi (Power high),
P Lo(Power low),
A Hi(Current high),
A Lo(Current low)
Average
Function
√
√
√
Harmoni
c
Analysis
/
/
1～50 times
Peak
Measur
ement
/
√ (voltage peak measurement,
current peak measurement)
/
Display
Hold
√
√
√
Mute
Alarm
√
√
√
Mute
Key
/
√
/
Lock Key
√
√
√
Interfac
e
RS232（DB9 ; 2-pin: TX, 3-pin:
RX, 5-pin: GND）
RS232（DB9 ; 2-pin: TX, 3-pin:
RX, 5-pin: GND）
RS232（DB9 ; 2-pin: TX,
3-pin: RX, 5-pin: GND）
RS485 (DB9 ; 8-pin: A , 9-pin: B )
RS485 (DB9 ; 8-pin: A , 9-pin: B )
RS485 (DB9 ; 8-pin: A , 9-pin:
B )
Baud
Rate
4800，9600，19.2K，38.4K，
57.6K，115.2K，default 9600.
It follows communication
protocol of standard SCPI and
Modbus-RTU.
1200， 2400， 4800, 9600, 19.2K，
38.4K，57.6K，115.2K，default
9600.
It follows communication
protocol of standard SCPI and
Modbus-RTU.
4800，9600， 19.2K， 38.4K，
57.6K， 115.2K， default 9600.
It follows communication
protocol of standard SCPI
and Modbus-RTU.
Power
Source
Input power：AC 100V~240V Frequency 50/60Hz
Precisio
n
Environ
ment
18℃~28℃，30%~75%RH (28℃< operating temperature < 18℃(when in 18℃, it needs to add
temperature coefficient)：reading of 0.05%/℃）

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Storage
Temper
ature
-10℃~50℃，non-condensing below 80% RH
Operati
ng
Altitude
≤2000 meters
General Characteristic
Color
Gray
Weight
3.3kg
3.2kg
3.2kg
Size
214mm×88mm×340mm
Standar
d
Accesso
ries
Specialized power cable x1；RS232 serial port line X1
Optional
Accesso
ries
UTE-L10A 10A three-pronged plug convert banana head plug connection cable x1
UTE-L16C 16A connection cable with alligator clip x1
UTE-L16A 16A three-pronged plug convert banana head plug connection cable x1
Standar
d
Packing
Quantity
（Outer
Box）
2
Standar
d
Packing
Size
400mm*300m*325mm
Gross
Weight
of
Standar
d
Packing
9kg
2.3 Front Panel
2.3.1 UTE9802+ Front Panel and Keys
The front panel of UTE9802+ is as shown in the figure 2.3.1.

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Figure 2.3.1 UTE9802+ Front Panel
Power Switch
Display
Keys
Description of UTE9802+ keys
Key
Function
Symbol
Description
Power
Switch
Press one time to turn “ON”, the power source is enabled, press it again to turn “OFF”,
the power source is disabled.
Left, Right
Key
Switch sub-menu：Use left, right key to select the sub-menu that need to be edited.
Number editing: Use left, right key to select the data bit that need to be edited.
Up, Down
Key
Menu editing: Use up, down key to select function item.
Number editing: Use up, down key to increase or decrease the numerical value.
Decimal
Point Key
Number editing: To move decimal point
Display Hold
Hold
Data hold key, when the key is activated, it will keep display the current data.
PF/Hz
PF/Hz
To select the fourth line to display power factor or frequency.
Voltage
Range
V.Range
To select fixed range or auto range. Vauto is auto range.
Current
Range
A.Range
To select fixed range or auto range. Aauto is auto range.
Setup Key
Setup
Enter Setup menu, this menu is to editing the configuration data of measurement,
alarm and communication.
Mute Key
Mute
The beeper can be mute when over the limit (mute alarm). Press the key to activate
mute key and the indicator will be illuminated; press it again to relieve the mute and
the indicator will be extinguished.
Zero (Clear)
Zero
Press this key to enter zero correction state. Zero function is to recalibrate zero bit
value of voltage and current channel.
Enter or
Utility Key
Enter
Utility
Enter Key: Short press is to activate confirm key to save the currently edited data.
Utility Key: Long press is to activate Utility key to enter Utility menu.
Lock Key
LOCK
Press this key and the indicator will be illuminated. Long press to unlock the key and
the indicator will be extinguished.

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2.3.2 UTE9806+ Front Panel and Keys
The front panel of UTE9806+ is as shown in the figure 2.3.2.
Figure 2.3.2 UTE9806+ Front Panel
Power Switch
Display
Keys
Description of UTE9806+ keys
Key Function
Symbol
Description
Power Switch
Press one time to turn “ON”, the power source is enabled, press it
again to turn “OFF”, the power source is disabled.
Left, Right
Key
Number editing: Use left, right key to select the data bit that need to
be edited.
Up, Down Key
Menu editing: Use up, down key to select function item.
Number editing: Use up, down key to increase or decrease the
numerical value.
Enter Key
OK
Save the currently setting.
Hold Key
Hold
Data hold key for keep display the current data.
When in setup page, press Hold key can return to the previous.
Mute Key
Mute
Mute key indicates the key sound is muted (blue indicator is
illuminated indicates the mute key is enabled.)
A Key
A
Switching the measurement parameter of Window A (V/A/W/VA)
B Key
B
Switching the measurement parameter of Window B (V/A/W/PF)
C Key
C
Switching the measurement parameter of Window C
(V/A/W/±Vpk/±Apk）
D Key
D
Switching the measurement parameter of Window D (V/A/W/V Hz/A
Hz/PF）

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Setup Key
Setup
Press Setup key to enter the setting menu of average filter and display
the update cycle.
Shift Key
Shift
Secondary function auxiliary key ：Shift + A to enter voltage range
setting；Shift + B to enter current range setting；Shift + Setup to enter
the secondary menu setting; Shift + Hold to move decimal point to
right（only valid when number editing）.
Lock Key
LOCK
Press this key and the indicator will be illuminated, it indicates other
key cannot be used. Long press to unlock the key and the indicator will
be extinguished.
2.3.3 UTE9811+ Front Panel and Keys
The front panel of UTE9811+ is as shown in the figure 2.3.3.
Figure 2.3.3 UTE9811+ Front Panel
Power Switch
Display
Keys
Description of UTE9811+ keys
Key Function
Symbol
Description
Power Switch
Press one time to turn “ON”, the power source is enabled, press it again to
turn “OFF”, the power source is disabled.
Left, Right Key
Switch sub-menu：Use left, right key to select the sub-menu that need to be
edited.
Number editing: Use left, right key to select the data bit that need to be
edited.
For description, use“ ”,“ ”to indicate the two keys in the manual.
Up, Down Key
Menu editing: Use up, down key to select function item.

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Number editing: Use up, down key to increase or decrease the numerical
value.
For description, use“▲”,“▼”to indicate the two keys in the manual.
Decimal Point
Key
Number editing: To move decimal point
Display Hold
Hold
Data hold key, when the key is activated, it will keep display the current data.
PF/Hz
PF/Hz
To select the fourth line to display power factor or frequency.
TRMS/
Total RMS of
Harmonic
RMS
Press this key to enter TRMS display interface, press it again to enter total RMS
of harmonic display interface.
Measurement
value of
Harmonic/
Harmonic
Distortion
Factor
THD/%
Press this key to enter harmonic distortion factor display interface, press it
again to enter measurement value of harmonic display interface.
Setup Key
Setup
Enter Setup menu, this menu is to editing the configuration data of
measurement, alarm and communication.
Mute Key
Mute
The beeper can be mute when over the limit (mute alarm). Press the key to
activate mute key and the indicator will be illuminated; press it again to relieve
the mute and the indicator will be extinguished.
Crest Factor
CF
To enter crest factor display interface.
Enter or Utility
Key
Enter
Utility
Enter Key: Short press is to activate confirm key to save the currently edited
data.
Utility Key: Long press is to activate Utility key to enter Utility menu.
Lock Key
LOCK
Press this key and the indicator will be illuminated. Long press to unlock the
key and the indicator will be extinguished.
2.4 Digital and Character Display
The data display format of data display window is nixie tube. Due to the limitation of the format, special symbols
are needed to represent each character, as shown in the following figure.
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
1
2
3
4

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5
6
7
8
9
0
2.4.1 UTE9802+ Display and Symbol
Display and Symbol
Description
Four display windows；
Display measurement data: The display screen can display V (voltage), A
(current), W (power), PF (power factor)/Hz (frequency) at the same time.
Menu editing: Display menu
An upgrade symbol of measurement data.
, ,
, ,
Alarm Symbol
OK：Measurement value of the current and power within the upper/lower
limit.
A Hi：Measurement value of current is higher than the upper limit.
A Lo：Measurement value of current is lower than the upper limit.
P Hi：Measurement value of power is higher than the upper limit.
P Lo：Measurement value of power is lower than the upper limit.
, ,
Measuring mode
The currently voltage range, when it displays V auto, it is auto range.

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The currently current range, when it displays A auto, it is auto range.
2.4.2 UTE9806+ Display and Symbol
Display and Symbol
Description
A,B,C,D four windows can be simultaneous measurement
Window A can measure V, A, W, VA；
Window B can measure V, A, W, PF；
Window C can measure V, A, W, ±Vpk, ±Apk；
Window D can measure V, A, W, V Hz, A Hz, PF.
Update symbol of measured data
Alarm Symbol
A-OL: It indicates the measurement value of current exceeds 12A or the
measurement value exceeds 120% of the currently measurement range.
V-OL：It indicates the measurement value of voltage exceeds 720V or the
measurement value exceeds 120% of the currently measurement range.
NG: It indicates the measurement range is not within the range.
PASS：It indicates the measurement range is in the range.
The display data is RMS.
The measured parameter in the current window is RMS voltage.
The measured parameter in the current window is RMS current.
The measured parameter in the current window is active power.
The measured parameter in the current window is apparent power.
The measured parameter in the current window is power factor.
The measured parameter in the current window is voltage peak
(maximum, minimum).
The measured parameter in the current window is current peak
(maximum, minimum).

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The measured parameter in the current window is voltage frequency.
The measured parameter in the current window is current frequency.
2.4.3 UTE9811+ Display and Symbol
Display and Symbol
Description
Four display windows；
Display measurement data: The display screen can display V (voltage), A
(current), W (power), PF (power factor)/Hz (frequency) and measurement
value of harmonic at the same time.
Menu editing: Display menu
An upgrade symbol of measurement data.
, ,
, ,
Alarm Symbol
OK：Measurement value of the current and power within the upper/lower
limit.
A Hi：Measurement value of current is higher than the upper limit.
A Lo：Measurement value of current is lower than the upper limit.
P Hi：Measurement value of power is higher than the upper limit.
P Lo：Measurement value of power is lower than the upper limit.
The current display data is RMS.
The current display data is the measurement data of harmonic.
The current display data is crest factor.
The current display data is the measurement value of harmonic.
The current display data is the harmonic distortion factor.
It’s a symbol of communication; it represents the upper computer
communicating with power meter.
2.5 Rear Panel
The rear panel of UTE9802+/UTE9811+ is as shown in the following figure.

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The rear panel of UTE9806+ is as shown in the following figure.
The function description of UTE9802+/UTE9806+/UTE9811+ rear panel is as shown in the following table.
No.
Picture of parts
Description
1
Under test load/LOAD terminal, it usually used to connect to the
input port of the product to be test.
2
Under test input terminal /SOURCE terminal，it usually used to
connect to the output port of AC power.
3
Three-wire power socket and fuse
4
Ground terminal
5
RS232/RS485 communication interface
Chapter 3 Operating Preparation and Measurement Display
3.1 Operating Preparation
3.1.1 Connecting Power Cable
The operating voltage of the instrument is 100V~240V (50/60Hz), please make sure the power supply is within
the rated voltage of this instrument, and make sure the instrument is well grounded.

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Warning: Please make sure that the power supply voltage matches the supply voltage before turning on the
power supply, otherwise the instrument will be burned out.
Notes: The instrument should be used under the recommended working conditions. Never use the instrument in
a place where have flammable or explosive materials, it may cause safety injuries.
3.1.2 Connecting Test Circuit
Please follow the following figure to connect the power and load, and make sure voltage and current is within
the measurement range of the instrument.
Warnings:
1. The load current flows along the thick wire in the above diagram, so these wires should have a large
enough safe load capacity.
2. The power supply of the load and the power supply of the instrument should be turned off when wiring
at the load end.
Notes:
1）When measuring large current/voltage or the current includes high frequency, it should pay attention to
possible mutual interference and noise problems when wiring.
2）The lead wire should as short as possible.
3）Use heavy gauge wire as can as possible when measuring current.
4）To reduce the distributed capacitance to ground, the wire and grounding wire should be as far away from
the instrument housing as possible.
3.1.3 Turn ON/OFF Power Supply
Turn on：Start self-check program when the instrument is enabled, the instrument will enter the measuring state
if the check result is correct.
Turn off：The upper/lower limit of current and power will be saved when the power has been turned off.
Notes ：After turning off the power, wait for 5 seconds to turn on again, otherwise the instrument may
abnormally display.
3.1.4 Power-on Measurement
Firstly, plug in the power socket on the rear panel, and use the specified voltage, the power socket should be
with a ground wire. After checking the wiring is connected rightly, turn on the instrument switch located at the
front panel, and the instrument will enter the measurement state. Apply power to the load and read out the

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required measurement value from the display on the front panel of the instrument after the load has been
working stably.
Notes: The instrument should be preheated for 30 minutes before entering the stable state. After cutting off the
instrument power, it should wait for more than 5 seconds before powering it on again. It is strictly forbidden to
switch the power on and off repeatedly within a short period of time, which will cause the instrument life to
shorten and may cause instrument failure. When the measurement is finished, turn off the instrument power
and unplug it to prevent possible damage to the instrument caused by lightning strikes.
3.1.5 Boot-up (UTE9806+ only)
1. The instrument will self-inspection and display three interfaces when it boot up. The first interface is to light
up all segment codes of LCD and all key indicators (some segment codes that are lit up are not used in this model,
it subject to the actual function). UTE9806+ has four keys with indicator, which is 【Hold】,【Mute】,【Shift】,
【Lock】，as shown in the following figure.
2. The second interface displays system information, including firmware and hardware version as shown in the
following figure.
F-1.00 represents firmware version. H-1.00 represents hardware version.
3. The third interface displays the system communication information, including baud rate, communication
address and communication protocol, as shown in the following figure.