AVHzY CT-1 USB Meter Current Tester Voltage Detector

SKU: USCT10001 Category:

For more information and discussion, please go and visit the buyer forum  http://forum.avhzy.com/

ユーザープレーヤーフォーラムを訪問して多くのサーポートを取得できます。リンク: http://forum.avhzy.com/

Download manuals and firmware

Reading the manual is the first priority
How to monitor the voltage and current between type-C devices?
1. Make sure the PD trigger switch on the meter is turned off.
2. Connect the charger and the meter with a type-C cable, and then connect the meter and the mobile phone (or something else) with another type-C cable.
3. If the screen didn’t light up, flip the cable on any side of the meter.


  • Basic USB Meter Features

–Voltage and current monitoring with 0.0001V, 0.0001A resolution, 0.05% precision.

–Interfaces supported for both USB-A and USB Type-C devices.

–5 groups of capacity, energy, time recording.

–D+ D- voltage measure with 0.01V resolution, 2% precision.

  • Fast Charge Features

PD2.0, PD3.0 with PPS (Programmable Power Supply) trigger supported

QC2.0 (5V/9V/12V/20V), QC3.0, QC4.0 (Or PPS) trigger supported.

Samsung AFC 9V, Huawei FCP 9V, Huawei SCP 4.5V trigger supported.

Apple 2.4A trigger supported.

Apple MFI cable authorization test (Reference only).

Protocol recognize for QC2.0-5V/9V/12V/20V, QC3.0, Apple 0.5A/1A/2.1A/2.4A, USB-DCP, Huawei FCP/SCP, Samsung AFC.

Auto enumerate protocols function for chargers/power banks.

Main Control IC:STM32 F072
Display screen:TFT 1.44″ 128*128
Voltage Current Range :DC 4-25V 0-5A
Voltage Current Resolution: 0.0001V 0.0001A
Voltage Current Accuracy:0.1%+2d
Current Sample Point:High-side
Internal Resistance:32mOhm (After 1000 cycles)
Quiescent Current:0.4mA (At DC 5V)
Self-Power Solution:DCDC
D+D- Voltage Sample:Support
Micro ESR Test:Support
A-C C-C ESR Test:Support (Reference only)
4-line Support:Support
QC2.0 QC3.0 QC4.0 PD3.0  and PPS Trigger:Support
Clock & Standalone Temp Sensor:Support
USB Firmware Update:Support
MFI Test:Support (Reference only)
C-C Device Test::Support
Time Accuracy:0.002%


— History Versions —

1.(New)Add Huawei-SCP to auto detect function.
2.(Optimize)Optimized PD trigger routine, for better compability.

1.(New)Add PD3.0 support, and PPS/QC4.0 based on it.
2.(New)Add trigger function to Huawei-SCP.

1. (Fix) Fixed display trouble when the power is above 100W.
2. (New) Add customized string to “about” screen.
3. (New) Default language will be auto adjusted according to different customers.

1. (New) Add 50fps,100fps update rates to diagram painting.

1. (New) Add customized “about” screen.

1. (New) Add PD listener mode, you can enable/disable it in DeveloperTools->AdvancedSettings->Enable/Disable PD Listener.
2.(Optimize)For chargers with more than 5 PDOs, list the PDOs in small font.
3.(Optimize)Press and hold middle key while starting up, you can enter
PD trigger mode directly.

1.(New)Add bold font style, you can enable/disable it in personalization settings.
2.(Optimize)Optimized PD compability.

1.(Optimize) Sleep current cut down to 0.4mA.
2.(New & Optimize) New features in diagram painting:
–User can change the update rate of the diagram by rotating the keys
to left or right(1fps,2fps,4fps,10fps,20fps,30fps).
–User can switch the scale mode by long rotating the left key
(Switch between auto scale mode and toGND scale mode)
–Long right key rotation to pause/resume painting.
3.(Optimize)If the charger still responds to the requests when entering
PD trigger mode, a force reset is not necessary.

1.(Fix)Fixed -1% gain error on D+ D- voltage channels.
2.(Modify)Current arrow was replaced with “+-” to avoid misunderstanding.
3.(Modify)Indicator “PD” was changed into “TC” to avoid misunderstanding.
4.(New)Current resolution turns to 0.01mA when the current is below 100mA.

V1.67/V1.68/V1.69 Beta: Initial factory release

1.(Fix)Fixed QC3.0 recognization.
2.(Fix)Fixed PD trigger compability problem on letv EV-24ACN.
3.(Modify)Current arrow will only be shown when the current is more than 0.2mA.
4.(New)Add huawei SCP protocol recognization.
5.(New)Add “Advanced Settings” to developer tools, in which user can disable startup logo and warnings of fastcharge trigger.
6.(New)Add screen rotation.


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