The new version of the hardware ZY1280E is on sale. Compared with the ZY1280M, it has the same functions. It optimizes the self-consumption to reduce 4mA in each gear, and optimizes the problem of D+D- short circuit to vbus will crash.

safety warning This type of tester has multiple input and output ports. All ports except the online port are connected in parallel. Only one input and one output are allowed to be connected at the same time. Some models of testers support trigger high-voltage fast charging. After triggering high voltage, both the input and output ports will be connected. There is high voltage, please do not connect to any equipment with insufficient withstand voltage. Please confirm that the display voltage is correct and then connect to the equipment. The resulting problems include but not limited to burning mobile phones, burning equipment, burning adapters, etc. The shop does not take any responsibility





Other performance parameters:
Weight: about 60g including iron box, 10-30g bare metal
Voltage range: 3.5-24V, ultimate withstand voltage 28V
Voltage resolution: 0.0001V (18bit), some models can reach 0.00001V with 1.28 seconds integration
Current range: continuous positive and negative 0-5A, with display current direction
Current resolution: 0.0001A (18bit), some models can reach 0.00001A with 1.28 seconds integration
Refresh rate: 0.36 seconds/time for normal interface, 10FPS for high-speed interface
Capacity range: 0-99999Ah 0-99999Wh
Capacity resolution: 0.0001Ah 0.0001Wh (0.1mAh 0.1mWh)
Time range: 1000 hours, accurate to 1 second

Instructions for use:
Measuring voltage and current:
Plug the USB plug into any USB port, plug into the mobile phone and other devices in the female socket, and read the voltage and current parameters directly. You can also use MicroUSB or USB-C female port as the input port.

Test mobile power output capacity and efficiency:
It is recommended to use it with a resistive dummy load, plug the USB male plug into the mobile power supply, and the female socket plug the dummy load. First, fully charge the mobile power supply, and then discharge the mobile power supply through the USB meter and load until it shuts down under voltage. The next time the machine is turned on, the displayed capacity will be Ah and Wh output by the mobile power supply.

The ZY1270 version uses smart recognition to accelerate charging:
If you don&x27;t use official chargers, such as Samsung chargers to charge Apple, or charge through a computer USB, the charging speed may be extremely slow or even refuse to charge. At this time, you can plug in the upper USB port to speed up charging. Note that it is impossible for a 1A charger to output 2A, and the energy is conserved.

Calculate mobile power battery capacity and efficiency:
Ah data x output voltage ÷ battery voltage ÷ efficiency = mobile power battery Ah (the output voltage is generally 5V, you can check the average voltage of the second screen of the capacity meter, the battery voltage is generally 3.7V, and the efficiency is generally 85-90%. Our shop In the high-end mobile power supply, 95%), or Wh data ÷ efficiency = battery Wh (so measuring Wh is easier to calculate), battery Wh ÷ battery voltage = battery Ah, Ah ÷ 1000 = mAh. If the built-in battery capacity and voltage are known, the mobile power efficiency can be calculated: (Ah data x output voltage) ÷ (battery capacity x battery voltage) = mobile power efficiency, or Wh data ÷ battery Wh = mobile power efficiency

Test the efficiency of the power adapter/charger:
Use with watt-hour meter (the one in your distribution box) and fake load. Only connect the tested charger after the electric meter, connect the output of the charger to the USB meter and dummy load, run for a period of time, check the accumulated Wh data of the USB meter, and then check how much electricity the meter has gone, 1 kilowatt-hour = 1000Wh, use the USB meter to read ÷ Change in meter reading = accurate charger efficiency. (In fact, it is more convenient to count the number of turns of the meter turntable. Generally, the meter will mark one turn as 0.00x degrees)

Test the internal resistance of the data cable/USB adapter cable/other USB meter:
The four-line Kelvin method is used in conjunction with our shop&x27;s artifact measuring line.
The pressure drop method is used with resistive loads. First, plug the USB meter into the power supply, switch to the line resistance measurement function, then plug in the precision dummy load and adjust to the required test current (recommended to be greater than 0.5A and less than or equal to 2A), after the reading is stable, press and hold the button to record the reference voltage and current. Then unplug the USB meter, use the data cable/adapter cable/other USB meter to be tested directly into the power supply, and then plug the USB meter into the cable to be tested, and fine-tune the dummy load to the reference current as much as possible. You can read the internal resistance of the wire under test and the line loss voltage drop under the test current.

Test battery capacity:
Use a linear charging circuit such as TP4056 to charge a completely dead battery through this capacity meter. The capacity reading is the battery capacity. This method can also be used to measure the charging capacity of the mobile phone (try to use a USB cradle to charge, because the mobile phone is generally not Linear charging, and there is interference in standby power consumption)

Measure the current of small equipment and standby current:
The high-resolution and high-precision current as low as 0.1mA or even 0.01mA is convenient for detecting the working current/standby current of almost all small USB devices, such as card readers, wireless mouse receivers, Bluetooth or network card adapters, etc. It can be detected directly by plugging it in.

Use the record threshold function to measure the charging time/capacity:
Most mobile phones still have a little trickle current after they are fully charged. If the trickle current is not shielded, the capacity will keep increasing, which will interfere with the test. After setting the trickle shield, when the charging current is less than the set value, the capacity and accumulated charging time will not increase, so that the charging time and charging capacity can be measured more accurately. Set to 0 to turn off the trickle shielding function.

The current waveform of the power supply&x27;s output capability of the measuring equipment:
The high-speed current curve drawing (can be set up to 100 times per second) can be used to draw the current waveform of the power supply after the electric equipment is powered on, and it is an indispensable tool for the development of adaptive current electric equipment

Test EMARK line:
New version of the USB meter test method: plug the male plug of the USB meter into the mobile power supply, plug the EMARK cable into the USB-C OUT port of the USB meter, and then run the EMARK cable test function.

Data cleared:
The interface that displays the capacity (that is, the interface of Ah, Wh) long press and hold the button, it will jump to the next group first, continue to hold for a few seconds, it will jump back to the current group and reset the current group, that is, the reset operation is completed

Key operation:
Short press to switch functions or switch parameters, long press to enter functions or confirm parameters.

Shortcut screen rotation:
Display a separate large font voltage and current interface, long press the button to rotate the display direction

Power-on state:
Turn on the power through the USB male plug, and the display will display the LOGO for about 1 second, and then enter the parameter interface

Display parameter switch/close display:
Short press the button on the parameter interface to switch the display parameters/functions and turn off the display

Restore the backup settings; restore the factory settings:
When the LOGO is displayed, press and hold the button until Setting is displayed, short press to switch to (Factory Settings restore backup) and long press to enter this function, and then long press again until the countdown is reset to zero to restore the backup. This restore is the factory-calibrated backup parameter.

Data calibration function settings:
An electronic load meter, an adjustable power supply. Press and hold the button and then turn on the power, about 5 seconds to enter the setting and then let go, after letting go, a list of options is displayed, short press the button to switch to the 10V voltage reference, the adjustable power supply is adjusted to the precise 10V, do not connect any load, long press the button , The system automatically records the current voltage as standard 10V. Short press the button to switch to 2A current reference, electronic load CC constant current mode, adjust to accurate 2A, connect to the USB female port, long press the button, the system automatically records the current current as standard 2A

Install serial port wireless bluetooth module:
For the tutorial, please browse the description of the Bluetooth module. The name defaults to SPP-CA, and the online password defaults to 1234.

common problem:
The voltage fluctuates when the USB plug is shaken: Answer USB is just as good, and good quality can only slightly improve this problem. Our shop guarantees to use copper shell USB female socket, copper core contact gold-plated USB male connector (copper shell male connector is really too little and too weak). When plugging in, you can plug and unplug it several times to oxidize and wear off the plugged USB socket to ensure good contact, and the fluctuation will be much smaller.
Type-C PD charger plugged into the USB meter does not display: PD is a two-way communication charging protocol, the charger must establish communication with the electrical equipment to output voltage, so the separate meter does not display.
The Type-C PD does not display when the electric equipment is plugged in: ZY1271 Flying Dragon is designed with dual Type-C female sockets, which is equivalent to connecting two data lines in series. Most of the CC1 and CC2 pins of the Type-C line PD communication are only connected to one of them, causing the end of the meter to be plugged in anyway, and the communication cannot be powered on. The solution is to turn any one of the plugs into the meter and try again. Try to use the Type-C cable of the same brand.
Why not use a USB plug or a female socket that is plugged in the front and back: The internal resistance is too big to be scary, the life is bad to scary, the quality is bad to scary, and the current cannot be excessive. The double-sided plug of the male plug has a poor hand feel when inserted, and the feel of plastic deformation and squeezing in, it will even break its own contacts or break the USB port when it is inserted to the end. The double-sided socket of the female socket is loose and has poor contact, and sometimes it even short-circuits to the USB iron shell and burns. Convenient for you no more than 100 times, and then make you inconvenient for life.
Why don’t the new models use OLED displays? The small domestic or Taiwan-made OLED displays are of poor quality and are easy to burn. They will have obvious shadows after a week of continuous lighting, and the writing will be blurred after continuous lighting for one month. Most pixels will not light up after continuous lighting for one year. It is not suitable for long-time work display; the screen jitter is obvious, the refresh rate is low, and the flicker; the effect of taking evaluation photos under high ambient light brightness is horrible. The TFT LCD screen is completely free of this drawback.
The USB3.0 version is plugged in to the end and the screen is black: Answer The design of some USB2.0 sockets is not standardized, which may cause the USB2.0 to be inaccessible after plugging in to the end. The solution is to pull it out a little bit. The USB2.0 tester does not have this problem, but it does not support USB3.0.
Can the USB2.0 version test USB3.0: Answer can only measure the power consumption of the USB3.0 device under the USB2.0 interface. It may be slightly different from the 3.0 interface.
The button is not very good to press: Answer a test cycle of 0.36 seconds, the first 0.1 second calculates the parameter and displays the button not to be detected, and the second 0.26 second detects whether the button is pressed. It is recommended to press a little faster, not more than 2 cycles of 0.72 seconds, otherwise there will be no response.
The charger is incorrectly identified: For example, the DCP charger is clearly plugged in, but it displays or HVDCP? Answer It is recommended not to connect the mobile phone to the charger mode test, and plug the ZY1231 into the charger alone, so that the identification is much more accurate. Because the phone may communicate with the charger and interfere with recognition. And because DCP actually overlaps with the characteristic voltages of Samsung, Apple 2.4A, and fast charge 20V, if the characteristic voltages are the above three, they will be displayed first instead of DCP.
Does your USB watch have a protection function? Answer The new small color watch ZY1272 is equipped with protection, but it cannot protect against instantaneous overvoltage. Please be aware that the hardware principle cannot support it. I tested a USB meter with a protective wing sanitary napkin shape on Taobao, which simulates the breakdown output of a car charger of 12V (only 12V, the car charger generally outputs 30+V pulses), and that USB meter burns directly. The mobile phone charged up was also burned directly, and the protection function was useless. The reason is that the USB meter can only withstand a voltage of 7V, and it has to delay several hundred milliseconds after detecting an overvoltage to disconnect the output. This delay is enough to burn a 5V mobile phone 100 times.
Too many current digits are hard to read? Answer This is a capacity meter, not just a pure ammeter. Assuming that only 3 digits such as 0.10A can be displayed, the actual load is 0.109A but only the 0.10A part is counted, the error is as high as 10%, and the capacity will not be counted. How accurate is such a capacity meter? The voltage and current of your tested equipment will change slightly. The tester can accurately reflect the changes and count all changes into the total capacity. Therefore, the more digits, the higher the resolution and the more accurate the capacity statistics. Don&x27;t believe that some DB vendors confuse the high-resolution useless theory.
Is USB3.0 useful? Answer If you don&x27;t need to test the device current of USB3.0, just choose USB2.0. If you want to test devices such as VOOC, DASH, Huawei 5V8A flash charge, or USB3.0 U disk, mobile hard disk, card reader, etc., you must use a USB3.0 interface meter, otherwise it can only work in USB2.0 mode Next, the measured current is only the current in USB2.0 mode.
What is D+D- voltage? Answer USB is not only positive and negative, but also two data lines, D+D-. This machine is the first to test the D+D- voltage signal to determine the charger type. For example, Android DCP recognition is short-circuit D+D-, Apple 2.4A is D+D- both 2.4V, and Samsung D+D- both are 1.2V.
D+D- voltage is not accurate after fast charge is triggered? Answer The fast charge trigger and D+D- voltage share the same channel. After the fast charge is triggered, the D+D- voltage is not credible. If you want to detect the D+D- voltage, please do not use the USB meter to actively trigger the fast charge.

V3.33 version of the manual: Is the English display in the manual? Yes, when you read it carefully, you will know how to cut and display it in Chinese. Manual Baidu SkyDrive download: http://pan.baidu.com/s/1kViJh59





Table comparison of various models:

ZY1280: USB2.0 interface, including all the functions of 1276, newly added USB upgrade, connected to the upper computer of the computer, large screen and many functions.
ZY1276: USB2.0 interface, with almost full-featured fast charge trigger detection function, higher current resolution, type-C PD adapter can be tested.
ZY1275: Ultra-high current Huawei 8A plug socket, total internal resistance is only 15 milliohms, with almost full-featured fast charge trigger detection function, and can test Type-C PD adapters.
ZY1273: USB3.0 interface, necessary to test USB3.0 equipment, support VOOC, DASH fast charge, with 1 TypeC interface, can test USB to Type-C line resistance.
ZY1272: USB2.0 interface, no other measuring line interface, with safety monitoring function, with over-voltage, over-current, under-voltage, and stop charging after full.
ZY1271: USB2.0 high current interface, with 2 TypeC interface and MicroUSB interface, can measure bidirectional PD voltage and current, can measure Huawei 5V5A, large screen.
ZY1270: USB2.0 high current interface, dual USB output ports, with MicroUSB interface, with accelerated charging function, can test Huawei 5V5A, large screen.
ZY1266: A black-and-white USB meter with higher cost performance, with the same accuracy as the 127x series.
ZY1265: A black-and-white USB meter with higher cost performance than ZY1266, with the same current accuracy but a lower voltage accuracy.