RuiDeng UM25 User manual

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Contents
Instructions for USB Tester with Full Colour Display .................................................... 1-6
The PC Control Software Installation Instruction ............................................................... 7-18
UM25C Android APP Instruction ...................................................................................... 19-22
Instructions for USB Tester with Full Colour Display
-Model: UM25/UM25C
Dear Customer,
Thank you for purchasing this Full Colour USB Tester from Hangzhou Ruideng Technologies Co.,
Ltd. Prior to using this product we recommended that you briefly familiarize yourself with these
instructions. In order to ensure the correct operation and use of the device. We also advise that
you keep these instructions in a safe place for future reference as may be needed.
Technical Parameters:
Model: UM25/UM25C
Display screen：1.44 Inch color LCD display
Voltage measurement range:4-24.000V
Voltage measurement resolution:0.001V
Current measurement range: 0-5.0000A
Current measurement resolution: 0.0001A
Capacity accumulation range: 0-99999mAh
Voltage measurement accuracy:±（0.5‰+2digits）
Energy accumulation range:0-99999mWh
Current measurement accuracy:±（1‰+4 digits）
Load impedance range: 0.8Ω-9999.9Ω
Time measurement range:0-99h59min59s
Temperature range:-10℃~100℃/0℉~200℉
Temperature measurement error:± 3℃/ ± 6℉
Screen brightness setting: Levels 0-5
Delay off the screen time：0-9minutes
Voltage graphing range: 4-24.00V
Current graphing range:0-5.000A
Product weight:23.74g(UM25C)/19.26g (UM25)
Refresh rate: 2Hz
(No packaging)；54.56g(UM25C)/50.08g (UM25)( With packaging)
Dimensions：71.2mmx30.5mmx12.4mm(UM25C)/71.2mmx30.5mmx11.3mm(UM25)
Quick charge recognition mode：QC2.0、QC3.0、APPLE 2.4A/2.1A/ 1A/0.5A、Android DCP、SAMSUNG
Function Interfaces

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Measurement Main
Interface
Quick Charge Recognition
Interface
Charging Recording
Interface
Data Connection Cable
Impedance Measurement
Interface
Measurement Graphing
Interface
System Parameter Setting
Interface
The Core Function:
PC Bluetooth Communication
Android Phone APP Control
Quick Charge Recognition
Data Record and Store
Capacity/Energy Detection
Differential Voltage Method Measurement Data Connection Cable Impedance
Voltage/Current/Power Detection
Load connecting detection function (screen auto off, plug the load, screen auto lighting)
Device Layout
A：Micro USB Port

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B：Multifunction buttons (4)
C：Bluetooth Switch
D：USB A Female Port
E：USB A Male Port
F：Type-C Input Port (Only VBUS、GND、CC1、CC2 four wires)
G：1.44 Inch Color Screen
H：Type-C Output Port (Only VBUS、GND、CC1、CC2 four wires)
I：Bluetooth Indicator: When connected to the host computer control software, the Bluetooth
indicator changes from flashing to steady state. When connecting, the Bluetooth icon is displayed
on the screen. (Bluetooth communication version only).
Interface Prompt Representing Functions
1：Press and hold the key to rotate the Screen Left
2： Press the key to close the screen
3：： Press the key to open the help interface
4： Press and hold the key to rotate the screen right
5： Press PREV to previous page
6： Press Next to next page
Operating Instructions
When the unit is first powered on the welcome screen is displayed followed shortly by the
main interface screen.
Hidden interface: Pressing any button
whilst powering on the module will
display three options. Option 1 selects
the Chinese Interface and option 2
selects the English interface.
The third option is to reset（after reset,
system setting data was restored to the
factory setting, all the stored data was not reset）.Release the button at the desired selection.
Pressing and holding the button after stepping to the third option will exit the hidden interface.
Interface 1: Main Measurment Interface.( As shown below)
7：Voltage Measurement
8：Current Measurement
9：Accumulated Capacity
10：Accumulated Energy
11：Temperature Measurement
12：Number of the Data Group in
use
13：Load Equivalent Impedance
14：Power Measurement
Press the ‘ ? ’ button to enter the interface as shown above:
Press and hold the ‘NEXT’ button to switch Data Group. The USB tester can provide a total of 10
groups of data to save and view. These are numbered 0-9.

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With Data Groups 1-9 selected the current mAh and mWh are saved after power off. They will
continue accumulating the next time
the tester is powered on. When the data
group selected is 0 then the current
value of mAh and mWh will be
temporarily saved at power off. When
the device is next powered on these
values will be recalled and will begin
flashing. When the accumulated mAh exceeds 1 mAh, the previous data will be cleared and
accumulation will restart.
With a Data Group selected, press and hold the ‘PREV’ button to clear the mAh and mWh.
(As shown)
Press ‘NEXT’ to switch to the Quick Charge Recognition Interface.
Interface 2: Quick Charge Recognition Interface
15：D +: (DP) data positive signal level.
16：D-: (DM), data negative signal level.
17：Mode display
The product will automatically
identify a device with a supported fast
charging mode. At this time the device
supports the QC2.0、QC3.0、APPLE
2.4A/2.1A/ 1A/0.5A、Android DCP、SAMSUNG.(Note: This quick charge agreement recognition model is
for reference only, because cell phone updated quickly, it can't be absolutely accurate identification ）
Press ‘NEXT’ to switch to the Charging Recording Interface.
Interface 3: Charging Recording Interface
18：Accumulated Capacity
19：Accumulated Energy
20：Time display：The total accumulated
recording time.
21 ：Capacity/Energy statistics trigger
current
22：REC：recording status indicator. ‘REC’
displayed in red indicates that recording is stopped. ‘REC’ displayed in green indicates that
recording is in progress.
After power on, when the current flowing is greater than the Low Current trigger value. The
system automatically begins to record the accumulated capacity, energy, and time elapsed. The
‘REC’ indicator will change from red to green.
To set the Current trigger value, press and hold the "Next" button to highlight the value then
press the ‘PREV’ button to adjust the value as required. The value can be set anywhere between
0.01A- and 0.30A. (10mA to 300mA).
Press "Next" button to switch to the Data Connection Cable impedance Measurement Interface.
Interface 4: Data Connection Cable Impedance Measurement Interface.
The Tester can use

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differential voltage method to measure the resistance of a data connection cable
23：USB Tester directly connected to the power supply with Voltage and Current values displayed
24：USB Tester connected via a data connection cable with Voltage and Current values displayed.
25：R: Data Connection Cable resistance.
Measurement procedure:
First, connect the USB Tester directly to the power supply and adjust the appropriate load
current (recommended value 1A) . Press and hold the ‘NEXT’ button to begin recording data. The
indicator prompt will stop flashing .
Second, unplug the USB Tester and then reconnect it to the power supply via the Micro
USB/Type-C IN data connection cable and adjust the load current to the same value as in the first
step. Press and hold the ‘NEXT’ button to begin recording data. The indicator prompt stops
flashing and the Data Connection Cable resistance measurement test is completed and the value
displayed.
Note: If during the second step the screen turns black, this indicates that the voltage difference is too high
and the tester will enter the 4V power-down state. The load current needs be reduced. Then re-start the
measurement from the first step. After the Data Connection Cable resistance test is completed, the Tester needs
to be powered off and then on again to resume measurement.
Press the ‘NEXT’ button to switch to the Measurement Graphing Interface.
Interface 5: Measurement Graphing Interface
This interface displays the voltage
measurement over time in the 4-24V
range and will automatically adjust the
displayed range in real time to account
for voltage fluctuations. And the current
measurement over time in the 0-5.000A
range and will automatically adjust the
display range in real time to account for current fluctuations.
Press and hold “NEXT” to switch to D+D- graphing, as picture
This interface displays the D+ /D-
voltage measurement over time in the
0-3.3V range and will automatically
adjust the displayed range in real time to
account for D+/D- voltage fluctuations.
Press the ‘NEXT’ button to switch to
the system parameter setting interface.
Interface 6: System Parameter Setting Interface
26：Auto screen off time
27：Screen brightness
28：Temperature display C /F
29：Theme background color
30：Theme foreground color
Press and hold the "Next" button

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to enter into setting state, press “NEXT” button to step through the options of auto screen off
time, brightness level, temperature display units, theme background color and theme foreground
color. Stop on the value you wish to change then press the "PREV" button to change the setting.
For auto screen off time setting press ‘PREV’ to repeatedly step though the 10 options from 0
to 9 minutes. Default time is 1 minutes.
For the screen brightness setting, press ‘PREV’ to repeatedly step though the 6 options from 0
to 5 where 0 is the lowest brightness level and 5 is the highest. Default brightness is 4.
For the temperature display units, pressing the ‘Next’ button toggles the setting between C
and F. default temperature unite is C.
For theme background color, press ‘PREV’ to repeatedly step though the 7 options from 0 to 6
where the color sequence is red, green, blue, yellow, light blue, pink, white and black. Default
color is 2, blue.
For theme foreground color, press ‘PREV’ to repeatedly step though the 7 options from 0 to 6
where the color sequence is red, green, blue, yellow, light blue, pink, white and black. Default
color is 6, white.
At any setting state, press and hold the ‘Next’ button to exit the settings menu.

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The PC Control Software Installation Instruction
-mode: UM25C
Note: This product only supports Windows 7 and above.
1 Unzip the installation package
Note: Before unzip the installation package , please install the font package “Arial
Unicode MS”.
2 Click setup to install

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3 Bluetooth connection
3.1 open the bluetooth switch on the UM25C.
3.2 Use the compute to search bluetooth device.

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