@@ -21,6 +21,16 @@ We can begin with the removal of the serial connection board from breakout board
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@@ -21,6 +21,16 @@ We can begin with the removal of the serial connection board from breakout board
We need to remove the smd inductor as shown in **Figure 2** because it has a ferite core, which would be saturated in MR envrionment and may damage the hardware. This inductor is needed for the DC-DC regulator of the SoC. You can continue without replacing another inductor and use the global LDO regulator. The global LDO consumes [30% more power][1b] than the default DC-DC buck converter. Instead of replacing the inductor with a air-core equvalent value, global LDO is better for the size constraints and simplicity. Please make sure that the internal DC/DC regulator is properly configured, if global LDO is used. The instructions are shown in the **firmware** section
We need to remove the smd inductor as shown in **Figure 2** because it has a ferite core, which would be saturated in MR envrionment and may damage the hardware. This inductor is needed for the DC-DC regulator of the SoC. You can continue without replacing another inductor and use the global LDO regulator. The global LDO consumes [30% more power][1b] than the default DC-DC buck converter. Instead of replacing the inductor with a air-core equvalent value, global LDO is better for the size constraints and simplicity. Please make sure that the internal DC/DC regulator is properly configured, if global LDO is used. The instructions are shown in the **firmware** section
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<summarymarkdown="span"><i>Installing the extension wire</i></summary>
The leads are connected through an extension cable, which expands outside of the [implant casing][aj]. For the simplicity, there is no rubber head on the [casing][aj], which is conventionally done for the implants. Instead, we drilled a small hole on the front lid of the [casing][aj]. We need to place [feed through capacitor][ai] into the drilled hole. Then, solder the extension cable to that capacitor from the outside of the front lid. The other side of the [feed through capacitor][ai] should be connected to the rest of the PCB.
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<summarymarkdown="span"><i>Setting up external antenna for MRI setting</i></summary>
We can configure the _2.4 GHz_ antenna for MRI setting. First, we need to remove the SMA connector from the [breakout board][1]. Then, the port of the antenna output from the board should be connected to the protection filter via an coaxial wire. The other port of the protection filter can be connected to the [external antenna][8]. Currently, there is no dedicated port in the implementation. Therefore, the connector needs to be stripped and soldered to the filter.
