Manuals+

J7-C USB Multi functional Color Screen Tester

User Manual

Two Version Specifications

Non-Bluetooth Version

Image shows the J7-C USB tester with USB-A input and USB output ports, displaying '9.28V 6.41A 0059.48W 0007.92Wh/16°C 00819mAh Tme: 0000:16:59'.

Bluetooth Version

Image shows the J7-C USB tester with USB-A input, Micro USB input, and Type-C input ports, and USB output port, displaying similar parameters.

Product Key Operation Instructions

  • 1: Short press the button to switch the screen.
  • 2: Quickly double-click the capacity to reset to zero (mAh).
  • 3: Quick three-click power reset (Wh).
  • 4: Quick four-click is the timer reset to clear the current group (00:00:00).
  • 5: Quick five-click is to change the cumulative data storage group number (NO.X 10 groups of data).
  • 6: Long press the button to reset the capacity, power, and time to reset the current group (mAh, Wh, 00:00:00).
  • 7: When the Screen rotation the interface, press and hold the key again to rotation the screen settings.
  • 8: When interface is black, long press key button to enter background mode.
  • 9: When in the background mode, short press the button to the second item and then long press it to clear the current when there is no load.
  • 10: When in the over-voltage, low-voltage and over-current setting interface, double-clicking is the add and three-clicking is reduce. When adding or reducing, long-pressing is continuous add and reduce.

APP Download Address

IOS APP:

  • Search 'E_test' on iPhone APP store to download.

Android APP:

  • Search 'E-test' at Google Play to download or visit http://en.atorch.cn/upload/20220611142210.apk

QR Codes:

Two QR codes are shown, one for iOS and one for Android, with text 'Please make sure to enable Bluetooth, location information, and storage permissions on your phone before going online'.

Note:

  • This feature is only available on Bluetooth versions, and non-Bluetooth versions do not support mobile app connectivity.

Product Accessories

  • Product x1
  • OTG adapter x1
  • User Manual x1

Product Size

Diagram showing the USB tester with dimensions: 54mm (excluding Type-C male heads), 18mm, 10mm, 11mm.

What is this?

  • This is a gift, it is an OTG adapter.
  • 1. It can be used as an OTG function.
  • 2. It can also be used as a protocol trigger switch for PD chargers!

Why Doesn't Working When Plugged Into The USB-C Port?

Explanation:

  • Since the PD charger (USB-C) has its own PD protocol, if you don't connect a mobile phone with the PD protocol, the PD protocol cannot be triggered, so you need to trigger its protocol to work normally!

Operation:

  • Normal working: Insert the Micro USB adapter.
  • Not Working: Insert the Micro USB adapter.

Diagrams showing 'Normal working' with tester connected to charger and phone, and 'Not Working' with tester connected to charger but no phone.

Functional Interface: 14 in 1 Display Interface

Screenshots of the tester's display showing various interfaces: 'Welcome', 'Voltage: 5.13V Current: 1.96A Power: 0010.05W Capacity: 0851.62Wh', '9.28 6.41A', '30.0V', '<3.00V', '>8.00A'.

Setting method:

  • When the short key is pressed to the over voltage (>35.0V), low voltage (<3.00V) and over current (>8.00A) setting interface, the value can be adjusted by quickly double-clicking ([+ add]) or quickly three-clicking ([- reduce]). When adding or reducing, long-pressing is continuous add and reduce.

Interface switching:

  • Interface switching (Previous/Next page)

Background settings interface

Calibration interface

Bluetooth Version Online Instructions: J7-C Bluetooth Connection Method

Method:

  • 1. Plug J7-c USB tester into the USB charger and the Bluetooth indicator will light up.
  • 2. Please download the mobile app software, only support Android 5.0 and above. https://www.mediafire.com/folder/31bc15uhq8odb/E-meter
  • 3. Turn on Bluetooth on the phone, then open E-test APP on the phone.
  • 4. Select the Bluetooth symbol ending with BLE or SPP to connect.
  • 5. Click the Bluetooth icon in the upper left corner of the APP to the pop up the menu for selecting the USB tester model, UD18-BLE, return to the main APP interface.

Diagram showing the tester plugged in, then phone screenshots showing Bluetooth settings, app interface, selecting the device 'UD18-BLE'.

Mobile APP Interface Function Introduction

Functionality:

  • Install mobile APP (IOS 7.0 and above Android 5.0 and above) software. Use the mobile phone Bluetooth function to wirelessly connect the product, read this device, achieve more measurement and control details data, leaving measurement technology without boundaries!

Screenshot of the mobile app interface showing various data: Voltage, Current, Power, Capacity, Time, USB_D+, USB_D-. It also shows data curves (Voltage/Current/Power curve, D+/D- voltage curve), parameter display area, and control buttons like SETUP, ENTER, RESET, Interface switching.

Data Export:

  • Includes 'etest.xls' and software version number and company information.

Language Switch:

  • Click Chinese / English switch.

Product Specifications

ParameterValue
Voltage Range3.6V~32.0V
Resolution Precision (Voltage)0.01V
Current Range0.00~8.00A
Resolution Precision (Current)0.01A
Maximum Current8.00A
Capacity Cumulative Range0~99999mAh
Resolution Precision (Capacity)0.01Ah
Power Cumulative Range0~99999Wh
Resolution Precision (Power)0.01Wh
Power Metering Range000.00~150.00W
Resolution Precision (Power Metering)0.01W
Impedance Measuring Range1~999.9Ω
Resolution Precision (Impedance)0.1Ω
Temperature Measuring Range0~80°C
Resolution Precision (Temperature)1°C
Timing Measuring Range999 Hours 59 Minutes 59 Seconds
Resolution Precision (Timing)1s
USB D+ Voltage Range0V~2.99V
Resolution Precision (USB D+)0.01V
USB D- Voltage Range0V~2.99V
Resolution Precision (USB D-)0.01V
Time to Refresh500mS/times
Measurement Rate0.5 times/s
Alarm ModeDisplay Hints
Product Size61mm x 68mm x 10.8mm
Self-consumable Flow<0.02A
Working Temperature-10~+60℃
Working Humidity10~80%
Pressure of Work80~106kPa
CertificateRoHS, CE

Precautions Before Product Use

Operation Method 1:

Diagram showing connecting the charger, then the USB tester, then the mobile phone, labeled 'Working'.

Operation Method 2:

Diagram showing connecting the charger, then the USB tester, then the mobile phone, labeled 'Working'.

Product Description

  • This product is used for monitoring and displaying electrical parameters when charging mobile phones, as well as for testing various USB devices such as charger power and portable power bank capacity.
Models: J7-C, Sdb40f8805fed45bbba7d39f078f86b1c7, Sd4a75bbb226c4483b1ad9152e7005cbfZ, S8308664b7c114bb6866193891b17e187R, Sf7a3162ed3a14dc4a0088c8d626ab845j, J7-C USB Tester Type-C PD Digital Capacity Meter, J7-C, USB Tester Type-C PD Digital Capacity Meter, Type-C PD Digital Capacity Meter, Digital Capacity Meter, Capacity Meter

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Sd4a75bbb226c4483b1ad9152e7005cbfZ

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