Interfaces

This page describes the general information and interfaces location of AIRLink Telemetry Module.

Front side

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

Pin number

Pin name

Direction

Voltage level

Function

+5V

Radio module power supply

+5V

Radio module power supply

ETH_TXP

OUT

+3.3V

Ethernet transmit positive

ETH_TXN

OUT

+3.3V

Ethernet transmit negative

ETH_RXP

+3.3V

Ethernet receive positive

ETH_RXN

+3.3V

Ethernet receive negative

GND

Ground

GND

Ground

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.

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

Pin number

Pin name

Direction

Voltage level

Function

OUT

+5V

Fan output

Reserved

GND

Ground

Left side

SMA Antenna connector

Right side

SMA Antenna connector
Reset button

Read side

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

The top side has an enclosure-integrated heatsink.

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.

Bottom side

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.