Charger type: can be inserted into the unknown USB port or mobile power USB port, the USB port to detect the specific charge identification signal, easy to identify what is suitable for mobile phone charging. When using this function, it is recommended not to connect the phone, otherwise the phone will interfere with the identification.
D + D-voltage: that is, the data line voltage, based on this voltage can distinguish most of the charger type. You can refer to this voltage to help determine the USB port charge recognition mode.
Plastic shell: a plastic shell version of the dust-proof debris into a lot of good performance, hand touch the circuit is not easy to interfere with the circuit work. PCB frame version without shell, but the three-layer structure of the core circuit protection is also very good, good heat dissipation.
Interface: USB3.0 and USB2.0, USB3.0 backward compatible with USB2.0, USB3.0 can be used to test USB3.0 device operating current, USB2.0 interface is more suitable for testing ordinary charger and USB2 .0 of the device operating current.
Voltage: input support voltage range, it is recommended to work within the nominal value, if less than the nominal value may not work, higher than the nominal value of the lower or even burned. ZY1252 to become the first to support the new 24V USB table.
Current: input support current range, it is recommended to work within the nominal value, greater than 3A can also be displayed but the USB port can not withstand the high current may burn USB port. Circuit board sampling resistor maximum support 6A, for more current can be used for external sampling resistor support 20A.
Resolution: can read the minimum voltage or current capacity changes, the smaller the higher the resolution, can distinguish the more subtle voltage and current capacity changes.
Accuracy: Percentage of final reading and last bit reading range. The smaller the percentage, the higher the accuracy, the smaller the run range, the more stable the reading. ZY1252 to become the first to support the 0.1mV 0.1% accuracy, 5 effective reading, automatic range 0-30V voltage test USB table.
Line loss: Includes current sampling loss and USB contact resistance loss. The smaller this value represents the smaller the voltage loss after flowing through this USB meter. ZY1230 and ZY1231 is already USB table limit, but the new ZY125x series is a new low.
An hour capacity: Amp per hour, 1A current to maintain 1 hour was 1Ah, 1Ah = 1000mAh, the domestic mobile power and battery the most commonly used capacity units. Measuring battery capacity and mobile power capacity commonly used.
Watts capacity: watts per hour, 1W power to maintain 1 hour was 1Wh, 1000Wh = 1 kWh, compared to Ah expression more accurate, so the world common. Since the power = voltage x current, so Ah * voltage = Wh. This parameter measures the mobile power capacity more accurate and convenient, with the energy meter can also measure the efficiency of the charger.
Charging time: When the charge current is greater than the set trickle shielding current, the time starts to go. Use this function to measure the time it takes for the device to fill. It can also be used to accumulate the time the device is working. V2.5 version of the new features.
Temperature: built-in chip temperature, if no load without heat, the reading is similar to the ambient air temperature. V2.5 version of the new features.
Memory: All current models are ferroelectric FRAM memory, similar to the infinite number of 10000000000 times the erase life, so as to ensure that 1 second to save capacity, 300 years is not bad legend. USB table is the only use of this high-end memory.
Static power consumption: the default brightness lit after the screen, USB table consumes current. The machine uses 32-bit processor + external ADC, all models are a new low, as low as 6mA open screen power consumption and 4.5mA power consumption.
MicroUSB line function: with the constant current source can quickly detect the data line resistance, line loss and other parameters, the player selected a higher quality data lines.
Performance parameters:
Size: 75 * 30 * 15mm
Weight: Contains box 55g, bare metal 22g
Voltage range: 3.5-24V, limit voltage 28V
Voltage resolution: 0.0001V (18bit)
Current range: the average positive and negative 0-3A, can instantaneous maximum 24A (continuous more than 3AUSB port can not bear the Kazakhstan) to change the current can choose the store large 10 milliohm shunt directly support 24A
Current resolution: 0.0001A (0.1mA 18bit)
Capacity range: 0-99999Ah 0-99999Wh, in fact, 999999 and 9999999 also support, but the decimal point is not in, only shows the high 5
Capacity resolution: 0.0001Ah 0.0001Wh (0.1mAh 0.1mWh)
Instructions for use:
Measured voltage and current:
USB plug into any USB port, the mother of mobile phones and other equipment, read the voltage and current parameters directly
Measurement of mobile power output capacity and efficiency:
Need to match the use of resistive dummy load, USB male plug in the mobile power, the mother plugs the dummy load, until the full power of the mobile power discharge end of the undervoltage shutdown. The next time you turn on the unit, the display capacity is Ah and Wh for the mobile power output.
ZY1270 version uses intelligent recognition to accelerate charging:
If you do not use the official charger, such as the Samsung charger to charge the apple, or through the computer USB charging, charging speed may be slow or even refused, then you can plug the upper USB port to speed up the charge. Note that the 1A charger is not possible to output 2A, the energy conservation Oh.
Calculate Mobile Power Battery Capacity and Efficiency:
Ah data x output voltage ÷ battery voltage ÷ efficiency = mobile power battery Ah (output voltage is generally 5V, you can view the average voltage of the second screen of the gauge, the battery voltage is generally 3.7V, the efficiency is generally 85-90% In the high-end mobile power by 95%), or Wh data ÷ efficiency = battery Wh (so the measured Wh is more simple calculation), 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
Measuring power adapter / charger efficiency:
With the power meter (your home distribution box that cargo) and false load to use. The meter is only connected to the measured charger, the charger output USB table and dummy load, run for a period of time, check the USB table accumulated Wh data, and then check the meter how much power to go, 1 kWh = 1000Wh, with USB meter read ÷ Meter reading change = precise charger efficiency. (In fact, how many times the number of dial turntable more convenient, the general meter will be marked a circle is 0.00x degrees)
Measuring cable / USB cable / other USB table internal resistance:
With fake load. First, the USB table plug the power supply, switch to the line resistance function, and then plug in the precision dummy load transferred to the required test current (recommended greater than 0.5A less than or equal to 2A), read the stability of long press the button to record the reference voltage and current. And then unplug the USB table, with the data cable / cable / other USB table directly plug the power supply, and then the USB table into the line, false load fine current to the reference current as much as possible. You can read the measured wire resistance and test current under the line loss voltage drop
Measuring battery capacity:
The use of TP4056 and other linear charging circuit through this capacity table to completely no electricity battery fully charged, the capacity of the reading capacity for the battery capacity, the use of this method can also be measured mobile phone charging capacity (try to use USB cradle, because the phone is generally not Linear charge, and standby power consumption interference)
Measuring micro device current and standby current:
Low resolution of 0.1mA high-precision current, easy to detect almost all small USB device operating current / standby current, such as card reader, wireless mouse receiver, Bluetooth or card adapter.
Use trickle masking to measure charge time / capacity:
After most of the phone is full of trickle current, if not shield trickle capacity will be increased, interference test. When the trickle mask is set to less than the set value, the capacity and accumulated charge time will not increase, thus more accurate measurement of charging time and filling capacity. Set to 0 to turn off trickle masking.
The current waveform of the power supply output capability:
High-speed current curve drawing (the fastest 1 second 3 times) can be used to draw electrical equipment after power to detect the power supply current waveform. Development of adaptive current power equipment necessary weapon!
Data cleared:
Function 1 and function 2 interface (that is, the first line shows the current; voltage; group that interface) long press and keep the button, first jump to the next group, continue to hold down for a few seconds, will jump back to the current group and zero The current group, that is, to complete the zero operation
Data View:
Parameter interface long press the button to switch to the next group
Quick Screen Rotation:
Display D + D-voltage interface and display large font voltage and current interface, long press the button to rotate the display direction
Power on:
Through the USB public power, the display shows about 1 second LOGO into the parameter interface
Display parameter switch / off display:
Parameter Interface Short press the key to switch the display parameter / function and turn off the display
Restore the backup settings; restore factory settings:
Press and hold the button while the LOGO is displayed until the Setting is released. Press to switch to 09 - long press to restore the backup settings. Short press to switch to 07 - long press to restore the factory settings. Note that the factory setting is not calibrated. After the shipment is checked, the shopkeeper will back up a good setup and recommend that you do not use it easily. 08 - Backup settings cover the correct calibration parameters
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 show Setting and then let go, let go after the show 10 - below the display version number 2.0
Short press the button to switch to the display 00 -, adjustable power transferred to the precise 5V, do not take any load, to 0S below the voltage reading is relatively stable when the press the button, the system automatically records the current voltage for the standard 5V
Press the button to switch to the display 01 -, electronic load CC constant current mode, transferred to the precise 2A, access USB port, to 1S below the current reading is relatively stable when the press the button, the system automatically records the current current for the standard 2A
After setup is complete 10 - Long press or direct power off is automatically saved
Install the serial wireless Bluetooth module:
Graphic tutorial: http: //www.chongdiantou.com/thread-2481-1-1.html
Bluetooth connection computer tutorial: https: //item.taobao.com/item.htm? Spm = 686.1000925.0.0.Z2TR1H & id = 526297088674
common problem:
Shake the USB plug when the voltage fluctuations: A USB on this virtue, can only slightly improve the problem. OUR guarantee the use of copper shell USB female, copper contacts gold-plated USB male (copper shell head really too little strength bad). Insert the time can be inserted and removed several times to plug the USB seat oxide wear off to ensure good contact, fluctuations will be much smaller.
USB3.0 version plug in the end of the black screen: answer USB2.0 socket design is not standardized may lead to plug in the end USB2.0 contact, the solution is to pull out a little bit. Cure this problem can only choose USB2.0 version of the ZY125x series tester.
USB2.0 version can not measure USB3.0: A can only measure USB3.0 device USB2.0 interface in the power consumption situation. May be slightly different from the 3.0 interface.
Button is not very good press: A 0.36 seconds a detection cycle, the first 0.1 seconds to calculate the parameters and display does not detect the button, after 0.26 seconds to detect whether the button is pressed. It is recommended to press a little faster, not more than 2 cycles 0.72 seconds, otherwise no response.
Charger recognition is not right: for example, obviously insert the DCP charger but show or HVDCP? A charger mode test recommendations do not take the phone, a separate ZY1231 plug into the charger, so that the identification of a lot of accuracy. Because the phone may communicate with the charger to interfere with the identification. And then because the actual DCP and Samsung, Apple 2.4A, fast charge 20V several characteristics of the voltage coincidence, so if the characteristic voltage of the above three, will give priority to display, and will not show DCP.
Does your USB table have no protection function? Answer: Taobao with a protective function of a wing sanitary napkin shape of the USB table, analog car charger breakdown output 12V (only 12V, car charger to wear the general output 30 + V pulse), that paragraph USB table directly burned, then charge the phone is also directly burned, the protection function in name only The reason, that USB table only pressure 7V, and detected overvoltage to delay hundreds of milliseconds to disconnect the output, the delay enough to burn 100 times 5V mobile phone. As a result of adding overvoltage protection switch, so the internal resistance of up to 0.1 Europe, can not fully charge the full part of the phone. This function is worth the candle.
Do not read too much current? This is a capacitive table, not just a simple ammeter. Assuming only show 3 digits such as 0.10A, the actual load 0.109A but only 0.10A part of the statistics, the error up to 10%, the capacity will not statistics, so that the scale of what is accurate? The voltage and current of your equipment will be subtle changes, the tester can accurately reflect the changes, and all changes are included in the total capacity, so the more bits, the higher the resolution, the more accurate statistical capacity. Do not believe that some DB businesses are confusing high resolution useless.
USB3.0 in the end is useful? If you need to test the USB3.0 device current, you must select USB3.0 version, otherwise you can choose USB2.0. See a DB business that 3.0 does not add any cost, just draw a few lines only. What about it? USB3.0 plug socket is relatively easy to buy the quality of very good goods, because 3.0 regardless of current or speed than the requirements of much higher than 2.0; the machine resolution 0.1mA also convenient to measure a variety of USB devices standby power, such as USB3.0 Hard disk; U disk, etc., do you simply think that these devices in the 2.0 current and 3.0 the same? As a tester, why can not measure USB3.0? Spray others at the same time suggest that you first put your wing sanitary napkins do beautiful point and then anti-side leakage it!
What is D + D-voltage? A USB is not only positive and negative, there are two data lines, that is, D + D-. The machine first tests the D + D-voltage signal to determine the charger type. For example, Andrews DCP identification is short-circuit D + D-, Apple 2.4A is D + D- are 2.4V, Samsung D + D- are 1.2V.
