Channel hopping is performed at which HART layer
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The correct answer should be - Data link layer.
The Physical Layer refers to the relationship in between the electrical and physical levels in between a physical medium and a node. The WirelessHART physical layer is a simplified subset of the defined layer in the IEEE 802.15.4 standard.
The WirelessHART physical layer provides the service to the upper data link layer. The data link layer uses the channel hopping services and the channel blacklisting in order to increase the security and the reliability.
The Physical Layer refers to the relationship in between the electrical and physical levels in between a physical medium and a node. The WirelessHART physical layer is a simplified subset of the defined layer in the IEEE 802.15.4 standard.
The WirelessHART physical layer provides the service to the upper data link layer. The data link layer uses the channel hopping services and the channel blacklisting in order to increase the security and the reliability.
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Answer is - Data link layer
HART stands for Highway Addressable Remote Transducer. The HART Communication Protocol is a hybrid analog + digital industrial automation protocol. It involves a digital signal superimposed onto a 4-20mA analog signal to encrypt instrument information beyond the standard analog signal. 15 channels are incorporated in the physical layer of the HART.
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