Quectel L80 EVB Guía de usuario descargar pdf (Pagina 10)

M33 EVB User Guide

Figure 3: EVB bottom view

A: Serial Port 1

B: Serial Port 2

C: M33_EVB_TE Board interface (with indication mark)

D: SIM card socket

E: Test points

F: Serial Port 3

G: Handset socket of audio channel 1

H: Headset socket of audio channel 2

I: Handset socket of PCM channel

J: EMERG_OFF button

K: Download switch

L: ON/OFF button

M: VCHG switch

N: 5V power switch

O: Power adapter interface

P: Antenna connector fixing hole

Q: Screw holes for EVB placement

R: Board-to-board connector for M33 module

T: Module operating status indication LEDs

S: Four GND holes for soldering the shielding pins of M33 module

U: Micro SD-Card socket

M33_EVB_UGD_V1.0 - 9 -

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Quectel L80 EVB Guía de usuario Pagina 10