Ebyte E90-DTU - Quick start; Hardware preparation

2.Dimension
2.1 Pin description
Pin NO.
Name
Function
Description
1
DB-9 female socket
RS-232 interface
Standard RS-232 interface
2
3.81 terminal block
RS-485, power interface
Standard RS-485 interface and
pressure line power interface
3
PWR-LED
Power LED
Red, lit when the power is on
4
TXD-LED
Transmit LED
Yellow, blinks when sending data
5
RXD-LED
Receive LED
Yellow, blinks when sending data
6
DC power interface
Power interface
In-line round hole, outer diameter
5.5mm, diameter 2.5mm
7
DIP switch
DIP switch
Controlled by working mode
8
Antenna interface
SMA-K interface
external thread, 10mm, 50
Ω
characteristic impedance