LED flag screen totem on light poles or Outdoor led screen kiosk, can save installation cost and time by pulling down and updating the printing advertising for light box. you can also unified management of intelligent management system. advertising can be really controlled,The Outdoor flat screen Is expected to become a large-scale media after as new carrier of advertising.
Small body, big world, It is not only small pixel pitch for led display, but a small era of led screen!
The flag LED display kiosk on each road poles, not only can realize the comprehensive utilization of road poles, making the road no longer monotonous, but also can play content according to different festivals and beauty the city. At the same time, it will also provide the public with weather changes, environmental pollution and road access. bring more convenience to the public.
Priva provides professional intelligent Led light pole screen solutions and professional commercial LED display technology With a wealth of LED project engineering experience, Priva Led will meet customer`s varity needs.
Integrated design, easy to use
Operate controller inside, Optional of installation on back column and side of pole, Easy to transport & install.
Intelligent management and Large scale cluster control and management. easy and convenient
Managing multiple displays via cable, 3G, 4G, WAN and LAN; Could manage by mobile phone with APP. 1-1 and 1-N management One click to release, timing, updating AD.
Outdoor Led Flag Screen Totem,Outdoor Led Flag Screen,Outdoor Flag Screen,Slim Outdoor Led Poster Shenzhen Priva Tech Co., Ltd. , https://www.privaled.com
Proper use not only allows accurate test data, but also protects the multimeter from damage.
1. Before use, you must see if the function switch is in the corresponding position of the measured power, and whether the test pen is in the corresponding jack.
2. According to the requirements of the "grounding" or "arrow" symbol on the header, place the multimeter vertically or horizontally. If the pointer does not mean that the mechanical zero position should be adjusted at the starting point of the scale.
3. Select the appropriate range according to the size of the measured power. When measuring voltage and current, try to deflect the pointer to more than 1/2 of full scale, which can reduce the test error. If you do not know the measured size, you can use the maximum range measurement and then gradually reduce the range until the pointer has a large deflection. However, when testing high voltage (above 100 volts) or large current (0. 5 amps or more, 0 should not be charged to change the range, otherwise, it is possible to make the transfer switch contacts fire and burn the candle.
4. Pay attention to the measured polarity when measuring DC voltage or DC current. If you do not know the voltage level of the two points being tested, you can test the two test leads briefly for two points, and determine the level of the potential according to the direction of the pointer impact, and then measure.
5. When measuring the AC voltage, it is necessary to know whether the AC voltage frequency is within the working frequency range of the multimeter. Generally, the working frequency range of the multimeter is 45-1500Hz. Exceeding 1500Hz
The measured reading value will be sharply low. The AC voltage scale is scaled for the sine wave rms value, so the multimeter cannot be used to measure sine wave voltages such as triangle waves and square wave sawtooth waves. When a DC voltage is superimposed on the AC voltage, a DC blocking capacitor with a sufficient withstand voltage value should be connected to measure.
6. When measuring the voltage on a load, consider whether the internal resistance of the multimeter is much larger than the load resistance. If it is not due to the shunt of the multimeter, the reading value will be much lower than the actual value. At this time, it cannot be directly tested with a multimeter. Use other methods. The multimeter's voltage block internal resistance is equal to the voltage sensitivity multiplied by the full voltage value, such as MF
The sensitivity of the -30 million meter at DC100 volts is 5 kΩ, and the internal resistance of the block is 500 kΩ. Generally speaking, the internal resistance of the low range block is small, and the internal resistance of the high range block is large. When the low voltage block is used to test a certain voltage, the shunting effect is large due to the small internal resistance, so it is possible to use the high range test instead, so that the pointer is deflected. The angle is small, but due to the small shunting effect, it is possible to have higher precision. The current measurement also has a similar situation. When the multimeter is used as an ammeter, the internal resistance of a large number of strokes is small and the internal resistance is small.
7. When measuring resistance, each shift must be zeroed. The value of the geometric multiplication of the geometric center of the multimeter resistance scale is the median resistance of the gear, which is equal to the internal resistance of the multimeter in the block. Common center scale values ​​are 8.10.12.13.16.20.24.25.30.60.75 and so on. The resistance scale is non-linear. When using it, choose the appropriate gear to make the pointer as close as possible to the center. Usually, the reading is accurate within the range of 0.1Ro-10Ro (Ro-----median resistance). The error is large. For example, the MF10 multimeter center scale value is 13, at Rx10 kohms Ro
= 130 kohms, this block is suitable for measuring 13 kohm-1. 3 megaohm resistor.
8. When the multimeter measures the resistance, the red test pen is connected to the negative electrode of the battery, and the black test pen is connected to the positive electrode of the battery inside the watch. The purpose of this is to make the multimeter continuously into the red meter pen regardless of the voltage, current or resistance. The black meter pen is out, and the hands can be deflected normally and without hitting. Remember that the red pen is connected to the negative battery, and the black pen is connected to the positive electrode. It is useful for checking polar components such as transistors, diodes, and electrolytic capacitors.
9. When using a power barrier to inspect a large-capacity capacitor, first discharge the capacitor to prevent its residual current from damaging the multimeter. The resistor on the test line should be disconnected from one end of the resistor to avoid the effects of other resistors on the line. It is forbidden to use electrical blocking to measure the resistance on the working circuit.
10. After the measurement is completed, the range switch should be rotated to the highest voltage limit to prevent the watch from being burned in the next time. If there is a "black dot" or "OFF" mark, turn the switch to this position to short the measuring mechanism.
How to use the multimeter correctly and correctly
1. Before use, you must see if the function switch is in the corresponding position of the measured power, and whether the test pen is in the corresponding jack. 2. According to the requirements of the "grounding" or "arrow" symbol on the header, place the multimeter vertically or horizontally. If the pointer does not mean that the mechanical zero position should be adjusted at the starting point of the scale.