HE700GEN200C GE Panel with touch function
Brand ABB color standard Application Industrial height 215mm rated current 490mA
Protection Level IP45 Suitable for motor power 186KW Application Site Power Industry Material Code GJR2391500R1220 Power industry HIEE401782R0001 Part Number HE700GEN200C
Applicable pipe 2 Whether imported is weighing 5.18 kg can be sold nationwide
HE700GEN200C GE Panel with touch function
HE700GEN200C panel with touch function must emphasize a concept here, that is, the presence of platform noise is inevitable, we can not reduce the noise to zero, because the module must be powered through the system, and the location of the module will also affect the neighboring other modules and interfaces, which is bound to have noise generation. However, although the existence of platform noise is inevitable, it can be managed to minimize its interference without affecting the degree of communication performance, which is why we have to measure the noise and find the source of interference.
However, it is not difficult to measure platform noise interference, but verifying the sources of platform noise and the level of interference caused by individual sources requires very complex and detailed measurement methods, which is definitely a challenge for developers. Just controlling the variables and cross-measuring the components that may cause interference can create thousands of combinations between each other, such as between different communication channels, Bluetooth and Wi-Fi, Wi-Fi and 3G, 3G and GPS, and so on. Signal loss can be caused by conditions such as Co-existence and Crosstalk. How to effectively determine the main noise sources through the correct sequence and method of measurement and the automation of time-consuming cross-measurements is the learning.
The primary focus of Noise reduction is to develop a reasonable Noise Budget for modulation
After the HE700GEN200C understands that the interference from the platform Noise will cause the reception sensitivity to deteriorate, and after knowing how to measure it, the next focus is to set the allowable value of the device noise, that is, to formulate a reasonable noise Budget (Noise Budget), in order to make the most appropriate adjustment for the device. That is to say, after knowing how the wireless communication technology can demodulate (for example, the deterioration of the 3G module can be demodulated through the GPS module), knowing the noise size and Eb/No(system average signal-to-noise ratio), setting the appropriate noise tolerance value, in order to correct (rather than eliminate) the noise interference.
However, such correction is not the correction of a single component, but requires a series of interlocking verification and modification. For example, when the screen of the device interferes with the antenna reception, it is not only the panel itself that needs to be modulated, but also the display card behind it, the input and output power, the design of the line, the LVDS interface, and even the surface current distribution mode of the antenna. As can be seen from the simple diagram in Figure 3, there are many variable factors that affect the signal reception capability of wireless devices, and each of them has an interdependent relationship with the whole body. Therefore, the key to effectively improve the product quality is to set a reasonable noise budget according to the actual noise condition of the platform, and then adjust accordingly to reduce the noise.
HE700GEN200C GE Panel with touch function
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