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Control Unit
HE920-EU
Telit Wireless Solutions HE920-EU Manuals
Manuals and User Guides for Telit Wireless Solutions HE920-EU. We have
2
Telit Wireless Solutions HE920-EU manuals available for free PDF download: Hardware User's Manual, Product Description
Telit Wireless Solutions HE920-EU Hardware User's Manual (84 pages)
Brand:
Telit Wireless Solutions
| Category:
Control Unit
| Size: 2 MB
Table of Contents
Table of Contents
5
1 Introduction
9
Scope
9
Audience
9
Contact Information, Support
9
Document Organization
10
Text Conventions
11
Related Documents
11
2 General Product Description
12
Overview
12
HE920 Mechanical Dimensions
13
Weight
13
Environmental Requirements
14
Temperature Range
14
Rohs Compliance
14
Operating Frequency
15
3 HE920 Module Connections
16
Pin-Out
16
LGA Pads Layout
23
Vv0301014 Rev.9 – 2014
23
4 Hardware Commands
25
Turning on the HE920
25
Initialization and Activation State
25
Turning off the HE920
27
Shutdown by Software Command
28
Hardware Shutdown
29
Hardware Unconditional Restart (RESET)
30
Hardware Unconditional Shutdown (Power Off)
31
Summary of Turning on and off the Module
32
5 Power Supply
33
Power Supply Requirements
33
General Design Rules
35
Electrical Design Guidelines
35
Input Source Power Supply Design Guidelines
35
Input Source Power Supply Design Guidelines
36
Battery Source Power Supply Design Guidelines
38
Thermal Design Guidelines
39
Power Supply PCB Layout Guidelines
40
6 Antenna(S)
42
GSM/WCDMA Antenna Requirements
42
GSM/WCDMA Antenna - PCB Line Guidelines
43
GSM/WCDMA Antenna - Installation Guidelines
44
Antenna Diversity Requirements
44
GPS/GNSS Antenna Requirements
45
Combined GPS/GNSS Antenna
45
Linear and Patch GPS/GNSS Antenna
45
LNA and Front End Design Considerations
45
GPS/GNSS Antenna - PCB Line Guidelines
47
GPS/GNSS Antenna - Installation Guidelines
48
7 Logic Level Specifications
49
Reset Signal(Module Restart)
50
8 USB Port
51
9 Serial Ports
52
Modem Serial Port 1
53
Modem Serial Port 2
54
RS232 Level Translation
54
10 Audio Section Overview
56
Analog Audio
56
Digital Audio
56
CODEC Example
56
11 General Purpose I/O
57
Logic Level Specifications
58
Using a GPIO Pad as Input
58
Using a GPIO Pad as Output
59
Using the Temperature Monitor Function
60
Short Description
60
Indication of Network Service Availability
60
RTC Bypass out
61
VAUX Power Output
61
12 DAC and ADC Section
62
DAC Converter
62
Description
62
Enabling DAC
62
Low Pass Filter Example
63
ADC Converter
63
Description
63
Using ADC Converter
63
13 Mounting the Module on Your Board
64
General
64
Module Finishing & Dimensions
65
Recommended Foot Print for the Application
66
Stencil
67
PCB Pad Design
67
Recommendations for PCB Pad Dimensions (MM)
68
Solder Paste
70
Solder Reflow
70
14 Application Guide
72
Debug of the HE920 in Production
72
Bypass Capacitor on Power Supplies
73
SIM Interface
74
SIM Schematic Example
74
EMC Recommendations
75
Download and Debug Port
76
15 Packing System
77
Tray Drawing
77
Moisture Sensibility
77
16 Conformity Assessment Issues
79
1999/5/EC Directive
79
FCC/IC Regulatory Notices
81
17 Safety Recommendations
83
18 Document History
84
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Telit Wireless Solutions HE920-EU Product Description (36 pages)
Brand:
Telit Wireless Solutions
| Category:
Control Unit
| Size: 0 MB
Table of Contents
Table of Contents
5
1 Introduction
8
Scope
8
Audience
8
Contact Information, Support
8
Document Organization
9
Text Conventions
9
Related Documents
10
2 Overview
11
Product Variants
12
Target Market
12
Features
12
Approvals
15
3 General Product Description
16
Dimensions and 2D Mechanical Drawing
16
Weight
17
Environmental Requirements
17
Temperature Range
17
Rohs Compliance
17
Operating Frequency
18
Transmitter Output Power
19
Reference Sensitivity
19
GSM/HSPA Sensitivity
19
GPS Sensitivity
19
Antenna(S)
20
Frequency Band of GSM/WCDMA Antenna
20
Frequency Band of GPS Antenna
20
Supply Voltage
20
Power Consumption
20
Logic Level
21
80404ST10112A Rev.2 2013-05-06
21
Input and Outputs
21
General Purpose I/Os
21
Indication of Network Service Availability (STAT_LED)
21
Power on Monitor (PWR_MON) / Auxiliary Power Output for Accessories (VAUX1)
21
Power On/Off Control (ON_OFF)
21
SIM Reader
21
Converters
21
Audio Interface
22
Serial Ports
22
USB Port
22
User Interface
22
Features
22
Speech Coding
22
Sms
22
Real Time Clock and Alarm
22
Data Transmission Capabilities
23
Local Security Management
23
Call Control
23
Phonebook
23
Characters Management
23
SIM Related Functions
23
3.18.10. Call Status Indication
23
3.18.11. Automatic Answer
23
3.18.12. Supplementary Services
24
3.18.13. Acoustic Signaling
24
Mounting the Modules on Your Board
24
Packing System
24
4 Evaluation Kit
25
5 Software Features
26
Enhanced IP EASY Extension
26
Overview
26
IP EASY Definition
27
6 AT Commands
28
7 Conformity Assessment Issues
29
1999/5/EC Directive
29
FCC/IC Regulatory Notices
31
8 Safety Recommendations
33
9 List of Acronyms
34
10 Document History
36
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