solution : how to judge the micro and typ-c cable quality

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RD tech
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solution : how to judge the micro and typ-c cable quality

UM25© Measure Type-C and Micro cable resistance same with UM24© and UM34©)
https://www.youtube.com/watch?v=-kNJVNPbGvc


Use our tester to measure the cable resistance to judge the cable resistance good or not , it is very useful
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 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 4.5V power-down state. The load current needs to 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.
UM24© USB tester meter):https://www.aliexpress.com/store/product/RD-UM24-UM24C-for-APP-USB-2-0-L...
UM34© USB tester meter): https://www.aliexpress.com/store/product/RD-UM34-UM34C-for-APP-USB-3-0-T...
UM25© USB tester meter): https://www.aliexpress.com/store/product/RD-UM25-UM25C-for-APP-USB-2-0-T...
“LD25© USB load”:LD25: https://www.aliexpress.com/store/product/RD-LD25-Electronic-Load-resisto...
Edited by: RD tech on 06/20/2018 - 04:52
d_t_a
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Good tutorial on how to check and test cable resistance.

But I’m wondering about the USB power adapter (charger) — some USB chargers will adjust the voltage automatically, when a poorer cable is used.

For instance, Anker has what they call “VoltageBoost” feature:

VoltageBoost” compensates for cable resistance by smoothing voltage output. With cables not affecting charging speed your device receives its fastest possible charging speed, every single time.

So if I use a USB power adapter / charger that has this kind of feature, the voltage will be adjusted automatically by the charger, and the meter’s resistance test won’t be as accurate. Is this correct?

Which means it is best to use a USB power adapter that doesn’t have something like the “VoltageBoost” feature when doing the cable resistance test — is this line of though correct?

RD tech
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Last seen: 5 days 4 hours ago
Joined: 08/27/2016 - 04:34
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d_t_a wrote:
Good tutorial on how to check and test cable resistance.

But I’m wondering about the USB power adapter (charger) — some USB chargers will adjust the voltage automatically, when a poorer cable is used.

For instance, Anker has what they call “VoltageBoost” feature:

VoltageBoost” compensates for cable resistance by smoothing voltage output. With cables not affecting charging speed your device receives its fastest possible charging speed, every single time.

So if I use a USB power adapter / charger that has this kind of feature, the voltage will be adjusted automatically by the charger, and the meter’s resistance test won’t be as accurate. Is this correct?

Which means it is best to use a USB power adapter that doesn’t have something like the “VoltageBoost” feature when doing the cable resistance test — is this line of though correct?


Hi friend
thank you so much for your message and your support
this is very good question .
when you measure the cable resistance, you must use the constant current load, “VoltageBoost” feature will not affect result ,…
don’t worry, but you must make sure the load is constant current load
that’s ok
thank you again