Hardware Design - Ebyte E22-230T22D User Manual

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Network ID：0～255
Key: 0 to 65535
Users need to pay special attention when using the upper computer to configure the relay mode, because in the upper computer,
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the parameters are displayed in decimal mode, so the module address and network ID need to be filled in by converting the
decimal.
If the network ID entered at transmitter A is 02 and the network ID entered at receiver B is 10, the hexadecimal value 0X020A is
converted to the decimal value 522 as the module address to be filled in by relay R when setting the module address.
That is, the module address value that needs to be filled in at this time is 522 at the relay end R.

10 Hardware Design

It is recommended that the module be powered by a DC regulated power supply with as small a ripple coefficient as possible,
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and that the module be reliably grounded.
Please pay attention to the correct connection of positive and negative power supply, such as reverse connection may lead to
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permanent damage to the module.
Please check the power supply to ensure that it is between the recommended supply voltages, as exceeding the maximum will
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cause permanent damage to the module.
Please check the stability of the power supply, the voltage should not fluctuate significantly and frequently.
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When designing power supply circuits for modules, it is often recommended to retain more than 30% margin to have the whole
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machine facilitate long-term stable operation.
Modules should be as far away as possible from power supplies, transformers, high-frequency alignments and other parts with
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high electromagnetic interference.
High-frequency digital alignment, high-frequency analog alignment, power supply alignment must be avoided below the module,
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if it is necessary to pass below the module, assuming that the module is soldered in the Top Layer, in the module contact part of
the Top Layer laying copper (all laying copper and good grounding), must be close to the digital part of the module and
alignment in the Bottom Layer.
Assuming that the module is soldered or placed in the Top Layer, it is also wrong to run random wires in the Bottom Layer or
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other layers, which will affect the spurious and reception sensitivity of the module to varying degrees.
Assuming that there is a large electromagnetic interference devices around the module will also greatly affect the performance of
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the module, according to the strength of the interference is recommended to be properly away from the module, if the situation
allows appropriate isolation and shielding can be done.
Assuming that there is a large electromagnetic interference around the module (high-frequency digital, high-frequency analog,
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power supply alignment) will also greatly affect the performance of the module, according to the strength of the interference is
recommended to be properly away from the module, if the situation allows appropriate isolation and shielding.
Communication line must be connected in series with 1k-5.1k resistors if using 5V level (not recommended, still risk of
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damage).
Try to stay away from some TTL protocols whose physical layer is also 2.4GHz, e.g. USB3.0.
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The antenna mounting structure has a large impact on the performance of the module, make sure that the antenna is exposed and
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preferably vertically upward.
When the module is mounted inside the enclosure, a quality antenna extension cable can be used to extend the antenna to the
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outside of the enclosure.
The antenna must not be installed inside the metal case, which will cause the transmission distance to be greatly weakened.
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E22-230T22D User Manual
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