Sign In
Upload
Manuals
Brands
Quectel Manuals
Control Unit
GSM Series
Quectel GSM Series GSM/GPRS Module Manuals
Manuals and User Guides for Quectel GSM Series GSM/GPRS Module. We have
1
Quectel GSM Series GSM/GPRS Module manual available for free PDF download: Audio Design Manual
Quectel GSM Series Audio Design Manual (36 pages)
Brand:
Quectel
| Category:
Control Unit
| Size: 1 MB
Table of Contents
About the Document
3
Contents
4
Table of Contents
4
1 Introduction
8
Summary
8
Safety Information
8
2 Audio Circuit Design
10
Audio Circuit Reference
11
M1X
11
Microphone Reference Circuit
11
Receiver Reference Circuit
12
Headset Reference Circuit
14
M95
14
Microphone Reference Circuit
14
Receiver Reference Circuit
15
Headset Reference Circuit
15
SPK Reference Circuit
16
M80
17
Microphone Reference Circuit
17
Receiver Reference Circuit
17
Headset Reference Circuit
19
SPK Reference Circuit
19
Ringtone
20
Hands-Free Application at Channel AIN1/AOUT1
21
Suggestion for Audio Layout
22
TDD Noise Solution
22
Suggestion for Mechanical Design
23
Component of SPK
26
Component of Microphone
27
3 Description and Suggestion
28
AT Command
28
At+Qaudch
28
How to Modify Volume
29
At+Qmic
29
At+Clvl
30
At+Qsidet
31
Echo Algorithm
32
Description of Par0, Par2 and Par12
34
Recommended Application Field
35
Advertisement
Advertisement
Related Products
Quectel GSM UART Port
Quectel GPRS Series
Quectel GSM EVB
Quectel GSM/GPRS Module Series
Quectel GSM QuecCell
Quectel gl200
Quectel GV100
Quectel GDM01
Quectel GL100
Quectel GNSS
Quectel Categories
Control Unit
Motherboard
GSM/GPRS Modules
Wireless modules
Network Hardware
More Quectel Manuals
Login
Sign In
OR
Sign in with Facebook
Sign in with Google
Upload manual
Upload from disk
Upload from URL