Affordable USB tester Fnirsi FNB28…
A simple screen that displays information about voltage, current, current power and resistance in large text. The front screen is protected by a thin acrylic plate, which will quickly become covered with small scratches in a short time.
The main controller is again from STM32 (marked as F150GB), shunt 0.004 Ohm, non-volatile memory from Atmel EEPROM < b>ATMLH907 32DM at 32KB, there is also a 7333 voltage regulator and a Schottky diode. Easily updated to the latest firmware, remembers the last selected desktop, easy to manage. According to the manufacturer, the FNB28, like the FNB88, supports a quick update of its own software.
Application in practice As you can immediately notice, in terms of physical dimensions of this four, the hero of the review can be considered one of the most compact (65.4×23.1×11.4mm). Measured voltage: 4 – 24V The case breaks up into separate parts, where the main one is the central one – a board with a screen, ports and all controllers. 5. test recording time WITHOUT LIMITS, Of course, there were some minuses, here they are also available.
In working order: The only thing that can be seen from the new is the mention of the brand in large text (this has not happened before).
The appearance of the device resembles a "sandwich" – an assembly of separate parts that are well distinguished from each other.
Color screen 0.96 inches, exactly the same as in the Fnirsi FNB88, RD TC66 and RD TC64 models. 7. the minimum current value from which the counting of values starts, Software update
The fifth table is the settings menu. With its compact size, it will be especially convenient to use when testing closely spaced USB ports. Next, we will analyze and look at the device from the inside in order to understand what it is built on. It displays the software version, serial number, number of device starts, as well as 12 items: This is as easy to do as any similar USB tester. Added to this are the voltage readings on the data lines (D D-), temperature and the current protocol.
In my household there were several similarly priced models from other manufacturers. Resolution: 0.0001 V/A Install everything you need and change the system language to English (the same problems with Cyrillic as before). The novelty undoubtedly turned out to be interesting, especially in terms of a fully functioning trigger of charging protocols. Computer software is still buggy and not friendly with Cyrillic. Packaging and appearance
Specifications: The tester is endowed with all the main features that may be useful to the end user. 8. write to memory YES/NO, I will show the procedure for changing the firmware right away, before parsing all the main features (but in fact I did it after, because I forgot about such a chip). Next, while holding down the "K1" button, we connect the tester to any free port on the computer. 4. auto test recording ON/OFF, Main types supported: Qualcomm QC2.0, QC3.0, Huawei FCP, Huawei SCP, Samsung AFC. For less than $10, it will be difficult to find a competitor with the same functionality (perhaps there is none yet).
A long press of the "K2" button switches to the chart mode.
Two buttons K1 and K2 are located on the upper end of the case. The model itself is simple, without additional interfaces (no Type-C or microUSB ports), but at the same time it is currently affordable, with a really working trigger. 10. language EN/CN, Follow the link below and download the program we need and the latest firmware.
The tester does not have such a mode in which the screen would turn off its backlight completely, so I decided to measure my own consumption. This is the very trigger of charging protocols, so expected by many. It is similar to the previous one, as it displays information about current, voltage and power. 9. temperature C/F, The product was provided for writing a review by the store. However, they apply in the same way. In fact, it really is.
On the reverse side there are graphic hints of the main controls, as well as brief performance characteristics. Long holding the "K1" button resets all readings. I decided to take a group photo to compare them at least visually. The new Fnirsi FNB28 is another USB tester from the Chinese with a number of interesting features. Arrives in a familiar metal box with a transparent window on the front. I would like to see modern USB-C ports, on which the manufacturer decided to save money. 1. display brightness in main mode, The scope of this USB tester, slightly different from the one that was previously already, was in my review (we are talking about the Fnirsi FNB88 USB-C). Model: FNB28 Four screws are removed from the front and four from the back. This is understandable, the past is designed for devices with Type-C ports, while this one is designed for conventional USB-A. There is no dedicated ADC. Capacity: up to 99999.9 mAh or 9999.99 Wh, 4 cell memory
You can run both automatic and manual checks.
Open the FNB28 DFU Tool v1.00 program, select the required firmware file in it and press START. There is one USB-A (male) and one USB-A (female). There are five virtual desktops available for the end user: The procedure takes half a minute.
Third table. There is no equipment as such: the seller did not put anything other than the tester. Interface: USB-A (male), USB-A (female) As you can see, it is not so large – about 0.024A. 6. test recording time AT THE SET TIME, The main ones I will include: a 0.96-inch color screen, the presence of a full-fledged automatic trigger for charging protocols, the ability to update your own software.
There are not many ports in the FNB28, which is generally considered the norm for a budget tester https://jiji.co.tz/17-oled-tvs/55_inch. Measured current: up to 5A Brand: FNIRSI
Conclusion 2. display brightness in standby mode,
Second table. Review published in accordance with clause 18 of the Rules Both standards are 2.0. Built-in temperature sensor. 3. standby time, Displays current, voltage, current power, test time, total time, group number, mAh and Wh counters. Official repository: www.mediafire.com/folder/i0mezh6h6duc8/FNB28 First table.
Affordable USB tester Fnirsi FNB28 with color screen, auto trigger and software update.
The presence of a fully functioning automatic trigger (detector) of protocols expands the available possibilities. In my memory, this is the cheapest tester with such a function that you can easily buy on the aliexpress site.
In the end, let’s look at the main features of the tester itself. 11. screen rotation, From left to right are: FNB28, JUWEI J7-4T Oled, RD UM24, RD UM25. The device will go into bootloader mode, displaying the number of the current software (in my case, firmware version 1.00 was installed). 12. reset
Fourth table. Trigger: Yes, Manual/AUTO: Qualcomm QC2.0/QC3.0/Huawei FCP/SCP/Samsung AFC