# Interfaces

### Front side

![Front side](https://449459530-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MTMlWysgDtJq8Hid1v7%2F-MdJwtY4K6hSTPCuNuFH%2F-MdK-y17WYW4x7yRzHig%2Ffront.jpg?alt=media\&token=45cad0c7-0bfe-4e1a-8a5e-0ba4c320a858)

#### ETHERNET - JST GH SM08B-GHS-TB

| Pin number | Pin name | Direction | Voltage level | Function                   |
| ---------- | -------- | --------- | ------------- | -------------------------- |
| 1          | 5V       | IN        | +5V           | Radio module power supply  |
| 2          | 5V       | IN        | +5V           | Radio module power supply  |
| 3          | ETH\_TXP | OUT       | +3.3V         | Ethernet transmit positive |
| 4          | ETH\_TXN | OUT       | +3.3V         | Ethernet transmit negative |
| 5          | ETH\_RXP | IN        | +3.3V         | Ethernet receive positive  |
| 6          | ETH\_RXN | IN        | +3.3V         | Ethernet receive negative  |
| 7          | GND      |           |               | Ground                     |
| 8          | GND      |           |               | Ground                     |

{% hint style="info" %}
The ethernet interface is decoupled with capacitors. Ethernet cable should be twisted to reduce EMI noise. Shorter cables are recommended for increased performance and higher bandwidth of the interface.
{% endhint %}

#### FAN - JST GH SM06B-GHS-TB

| Pin number | Pin name | Direction | Voltage level | Function   |
| ---------- | -------- | --------- | ------------- | ---------- |
| 1          | 5V       | OUT       | +5V           | Fan output |
| 2          | Reserved |           |               |            |
| 3          | Reserved |           |               |            |
| 4          | Reserved |           |               |            |
| 5          | Reserved |           |               |            |
| 6          | GND      |           |               | Ground     |

### Left side

![Left siide](https://449459530-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MTMlWysgDtJq8Hid1v7%2F-MdJwtY4K6hSTPCuNuFH%2F-MdK0SUWvxK9SrEdWlUo%2Fleft.jpg?alt=media\&token=d7a31084-602e-46d5-b1be-52a652ec0b1e)

* SMA Antenna connector

### Right side

![Right side](https://449459530-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MTMlWysgDtJq8Hid1v7%2F-MdJwtY4K6hSTPCuNuFH%2F-MdK0bEIimpZuqHIvz6S%2Fright.jpg?alt=media\&token=9720fb61-569f-49ba-81ab-573b5bb2ee6e)

* SMA Antenna connector
* Reset button

### Read side

![Rear side](https://449459530-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MTMlWysgDtJq8Hid1v7%2F-MdJwtY4K6hSTPCuNuFH%2F-MdK0phKRfYSB7BRKLPZ%2Frear.jpg?alt=media\&token=9c6310ee-1f58-42a4-9ae7-b3367d8e2055)

* TX LED - Transmission activity
* RX LED - Receiving activity
* LINK LED - Link activity
* CPU LED - CPU activity
* PWR LED - Power enabled
* RSSI LEDs - Received signal strength indication

RSSI LEDs status: 

* Blinking in turn: **searching for pair**
* Blinking all at once: **RF disabled**
* Solid: **RF connection established, pair found**

### Top side

![Top side](https://449459530-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MTMlWysgDtJq8Hid1v7%2F-MdJwtY4K6hSTPCuNuFH%2F-MdK1OGU2gsYL5buKczt%2Ftop.jpg?alt=media\&token=f1f36bc9-a075-4f8b-bc34-47a88d4043f2)

The top side has an enclosure-integrated heatsink. 

{% hint style="info" %}
AIRLink telemetry module is designed to work standalone (no cooling fan) without overheating at maximum output power with ambient temperatures of up to 50° C. 

In case there is a chance of overheating in your application - the module has 4x M3 mounting holes for the cooling fan. 
{% endhint %}

### Bottom side

![Bottom side](https://449459530-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MTMlWysgDtJq8Hid1v7%2F-MdJwtY4K6hSTPCuNuFH%2F-MdK2fhJCM-DInHRo34z%2Fbottom.jpg?alt=media\&token=368d229a-418d-488c-afe0-00afff1e8f4e)

## Ground Module

### Top

The top side has an a heatsink and mounting holes for an optional fan. It's important to have a clear space to allow for airflow circulation in front of this side. 

<figure><img src="https://449459530-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MTMlWysgDtJq8Hid1v7%2Fuploads%2FGdlUTUb5XnltmV4kgKka%2F3.jpg?alt=media&#x26;token=5b0441f3-6934-4e11-847b-9f9b1657716e" alt=""><figcaption></figcaption></figure>

### Left

<figure><img src="https://449459530-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MTMlWysgDtJq8Hid1v7%2Fuploads%2F5XICqRNuCoRcQA983KBR%2F7.jpg?alt=media&#x26;token=eb2b8f25-ad4b-45db-bbb4-1e5920625e82" alt=""><figcaption></figcaption></figure>

### Front

SMA antenna connectors for antennas

Status LEDs:

* TX: blinking when packets are being transmitted
* RX: blinking when packets are being received
* CPU: module operating
* RSSI: signal quality

<figure><img src="https://449459530-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MTMlWysgDtJq8Hid1v7%2Fuploads%2FV4anJ7ndA3g674G026Co%2F6.jpg?alt=media&#x26;token=6e2b3e82-e34f-4601-8409-09d6a4ef2ccc" alt=""><figcaption></figcaption></figure>

### Right

* Reset button
* Fan port

<figure><img src="https://449459530-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MTMlWysgDtJq8Hid1v7%2Fuploads%2FlmHdeCXZquTHsYWd2dAr%2F5.jpg?alt=media&#x26;token=73142c0c-0eb1-418d-a710-008b57f1fd51" alt=""><figcaption></figcaption></figure>

### Rear

* USB to connect to computer / tablet
* Ethernet port (RJ45)
* Power supply, 7-35V DC
* Serial port

<figure><img src="https://449459530-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MTMlWysgDtJq8Hid1v7%2Fuploads%2FTNqld4JSOBZd0mFtpFDl%2F4.jpg?alt=media&#x26;token=64ea14e2-5500-4986-8df8-ad603a8cf10d" alt=""><figcaption></figcaption></figure>

### Bottom

<figure><img src="https://449459530-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MTMlWysgDtJq8Hid1v7%2Fuploads%2FThg8I2DzU8Bv2tswOusy%2F8.jpg?alt=media&#x26;token=7c88f45e-9ee5-44d9-b25d-09cdded824a6" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}
Looking for CAD files? They are available [here.](https://docs.sky-drones.com/avionics/airlink-telemetry/cad-model-1)
{% endhint %}