Almost every month we see that the company RDIt releases the next new USB tester, then some kind of electronic load. I did not take the last two testers for review, because without me they were successfully tested and shown here. I have nothing to collect and store in the box for the same type, so I decided to wait for something more interesting. And in the middle of August a model appeared with the name - RD TC64, which has not the usual USB port, but a modern USB-C, and I wanted to test it ...
The tester has the following technical features:
Packaging and appearance
The novelty is delivered in a small plastic case with transparent walls. Through them all internal contents are clearly visible.
In addition to the device itself, there is also a piece of paper with links to detailed instructions. You can download it here - www.mediafire.com/folder/1ne1rbus2zxzc/TC64. True, it is in English, but I think it will be clear to most users.
The appearance of the tester is very similar to the oldermodels from RD (RD24, RD25, RD34). The device is a kind of assembly of several components. The main board in the middle and two plates on either side of it. The color of these plastic linings at this time decided to choose red, it had not been used before (of course, I mean specifically products from RD). The screen here is also protected by a protective overlay, which is still not the case with more advanced manufacturers such as YZX Studio, WEB, Power-Z.
On the front side, in addition to the window under the screen, there isanother large Type-C inscription, which is also duplicated on the reverse side with just another style. Two big arrows tell in which direction we should connect this tester.
Control is carried out by a single button,located at the top. As we see, there are not many ports either, just two, both of which are USB-C. The tester itself is connected via the USB-C port (dad), and the pairing to it is via USB-C (mother). The display is set to a color LCD of 0.96 inches, protected on both sides by dust from plastic inserts.
Dimensions of the novelty are quite modest. The case is long, taking into account the port - 48.7mm, in width - 18mm and in height - 7.1mm. Below I gave a photo, which shows how much TC64 is smaller than my elder brother RD25.
Like past testers from RD, the TC64 also has bothplastic linings have on top shipping films. Many of them for some reason do not remove, although they are very muddy, all scratched and interfere with the review. I immediately remove them, but this can be done by unscrewing all the screws from the front side as well as from the reverse.
At the same time and look at the internal structure.
That's actually the tester itself, naked without overlays. On the front side through the flex cable only the display is installed. There is nothing more interesting here. But on the reverse it is already possible to stop in more detail.
New built on a Chinese microcontroller NuvoTon n76e003at20. We saw the same in the recently released electronic load RD LD25. Since the device is able to save some measured information, on the board we see the chip of non-volatile memory from Holtek - HT24LC64 at 64kbps Voltage regulator M5333B.
Next, proceed directly to the analysis.declared functions and capabilities. With a simple power connection, the tester did not turn on. At first I thought that I got the marriage. But as it turned out, to bring it into working condition, it is also necessary to connect the consumer. Those. The tester acts as an intermediary between the charger and the end device. I do not know why it was decided to do it exactly as it is not very convenient for me. I also noticed that if you connect the TC64 not directly to the source, but through, for example, another tester (the same RD24 \ 25), then the review hero turns on even without a consumer. Such are the features that must of course be taken into account when choosing this model.
The tester has only two virtual workers.screen, well, not counting the start page indicating the manufacturer, model and firmware version. I got a copy with software v1.4. But the company does not stand still and very often releases updates, so the numbers may be different in the future.
Since there are only two screen workers, the control here is very simple. Press once toggles them in a circle. The first screen displays:
- Group number
- accumulated capacity
- Current power,
- Menu icons.
On the second screen, much coincides with the first:
- Group number
- Voltages along the lines D + D-,
- charging mode,
- Menu icons.
Let us examine each pictogram separately. All of them as we see five, located one after the other vertically. Switching between them takes place by long holding the button. When you select the desired item, it is highlighted and if at this moment you release the button, the desired action will be selected. All other settings are activated in the same way.
The first icon with a red light bulb is responsible for turning off the screen backlight. It turns off the backlight, not the screen itself. Used to save energy consumption by the tester.
I think the icon with the degrees is understandable, it is responsible for changing the scale between degrees and Fahrenheit.
The icon in the form of a piece of paper serves toswitch between group 0 and group 1. Group number 0 is selected if we do not need to save the measurements obtained by the tester. With each new connection, the counters will be reset to zero. Group number 1 on the contrary, has the property of preserving the measured values. Even after turning it off and on, they will not be erased.
The following item is needed to reset all saved data.
And the last is a turn of the screen. It can only be rotated 180 degrees.
With the management and the menu figured out, move on totests. The manufacturer claims for this model the measurement range for voltage from 3.70V to 30.00V and for current from 0 to 4.000А. When checking the voltage, I got the following. The tester could see the lower threshold already from 2.88V instead of 3.70V, but the screen backlighting at the same time became very weak. The upper threshold, as stated exactly - 30.00V, all that is no longer supported. The screen will be just dashes "- -". The current, as it should be, sees from 0A to 4A, here without surprises.
The tester has a sort of current calibration function. If the current values out of the box are higher or lower than they should be, turn it off, hold down the button and reconnect it.
Comparison of indications with a multimeter Bside ZT102
Conditions are not ideal due to the fact that it was not possible to connect the TC64 directly. An intermediary in the form of another tester was used - yz1276 (with the screen off).
It consumes a tester with a working screen backlight — 0.0154A, and with everything turned off — 0.0064A.
In real life, a tester with a USB-C port canUse to test chargers, external batteries with the same output. Previously, for these purposes, I used older models RD24 \ 25, yz1276, connecting to them a USB-C cable - USB-C. In this scenario, of course, there were losses, especially noticeable when measuring voltage. The hero of the review, on the contrary, does not require additional wires, he can connect to such charges directly and take measurements without significant error. For example, the photo below shows an example of working with a Blitzwolf BW-S11 charger with USB-C output and PD / QC3.0 support.
Another example of work between the Tanggood PD25-EU charger and the ZMI QB820 pilot. On the tester, we see that in this situation, charging is in PD 15V \ 2A mode.
The company RD this time turned out verycompact tester. Yes, not as universal as the model RD24 / 25/34, but it should not be so. Its main purpose is to work with devices endowed with USB-C ports. And for this completely fit. It is a pity that there is no much needed function as a trigger for charging protocols. The competitors already have models with this feature, but they also have a much higher price.
One of the advantages can be noted, small dimensions, well-readable color screen, saving measurements in memory, low actual consumption when the backlight is off, simple operation.
By cons I'll take the lack of a trigger, the inability to work without connecting a consumer.