SIRETTA ZETA-N2-GPRS Instructions for use

ZETA Series
GPRS/UMTS/LTE Modem with GPIO
Hardware User Manual
Rev 2.2

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ZETA Series
GPRS/UMTS/LTE Modem with GPIO
Table of Contents
Page
Introduction 3
About Siretta 4
General Description 5
Specications 6
AT Commands 8
ZETA Interface 9
System Diagram 11
System Overview 12
Modes of Operation 13
Ordering Information 14
Dimensions 15
ZETA Series Images 18
LED Indicators 19
Interfaces 22
RS232 Serial Port Interface 22
USB Serial Port Interface 23
USB Interface Drivers 24
GPIO 10-Way Connector 25
Digital Functions 27
Digital Output 27
Digital Input 28
SIM Socket 29
SIM Requirements 29
Antenna Connectors 30
Cellular Antenna Connector 31
GPS Antenna Connector (Optional) 32
GPS 33
ZETA-G-GPRS Modem 33
ZETA-G-UMTS and ZETA-G-LTE Modem 33
GPS Performance (ZETA-G Variants) 33
Power 35
RJ12 Power Connector 35
Power Supply Requirements 36
Current Consumption 38
Switching the Modem ON/OFF 39
Embedded Software Support 41
Telit AppZone 41
Telit AppZone - Lightweight, fast and efcient 42
Installation 43
Considerations for Installations Incorporating
the ZETA
43
Power Supply Installation 44
Securing the Modem 44
Safety and Product Care 45
General Precautions 45
SIM Card Precautions 45
Antenna Precautions 46
Exposure to RF Energy 46
Safety Recommendations 48
Conformity Assessment 49
Disclaimer 50
Denitions 51

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ZETA Series
GPRS/UMTS/LTE Modem with GPIO
This document is intended to provide guidance when adding a modem from the
ZETA series to your system.
The ZETA series of GPRS/UMTS/LTE M2M modems are an advanced range of
high performance modems developed for easy integration into existing systems
and for embedded application development.
The ZETA modem range is based on the Telit xE910 GPRS/UMTS/LTE module
series and is available with or without GPS. The modem manages the module
power up sequence and can be programmed to perform additional custom tasks.
This document discusses the modems states and modes of operation in addition
to the electrical characteristics of the modems interfaces.
Introduction

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ZETA Series
GPRS/UMTS/LTE Modem with GPIO
Siretta, located in Reading, United Kingdom have been manufacturing antennas,
cable assemblies and cellular modems for over 10 years. We supply our products
globally to many of the world’s leading organisations.
Whether you require an off the shelf or custom solution, Siretta has a wide portfolio of
antenna, RF cable assemblies and modems to t your application.
Our extensive knowledge and experience in the wireless market allows us to support
a wide range of customer applications, focusing on frequencies typically within the
75MHz - 5.8GHz range. These encompass the HF, VHF, ISM, GSM/GPRS/3G/4G
and GPS frequencies as well as industrial WLAN and VHF/UHF antenna/Wi-Fi
antenna solutions.
With a heavy emphasis on design, we have a team of dedicated Application
Engineers and Product Managers, backed up by Field Sales Engineers, who
specialise in wireless applications.
We have made signicant investments in R&D facilities which boast GPS hardware
development equipment and a cellular Pico Cell on site, as well as development
software and a comprehensive suite of Industrial, Scientic and Medical band, and
non ISM band frequency products. We have many technology partners enabling us to
keep at the forefront of the communications industry and offer class leading wireless
solutions.
About Siretta

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ZETA Series
GPRS/UMTS/LTE Modem with GPIO
The ZETA range of GPRS/UMTS/LTE modems are amongst the most versatile
modem series available today. The ZETA series offers a range of interface options
including USB and RS232 serial port communication, 2 x general purpose inputs, 1 x
general purpose output, 2 x general purpose input/outputs as well as 1 x ADC input.
In addition to this, the ZETA series provides a 3.3V reference power supply output to
use with external equipment and can be congured to offer 2 independent serial ports
into the modem.
The Siretta ZETA series of modems contain a powerful C development environment
which reduces redundancy and optimizes the architecture of your solution and lowers
system component costs. In a typical integration project, IoT device developers
employ a microcontroller to manage the modem functionality and other device
peripherals. The Siretta ZETA series integrates Telit IoT AppZone which eliminates
the requirement for an external controller, reducing cost and complexity, embedding
application code right in the module.
The Siretta ZETA series includes a comprehensive set of high-level enabling functions
allowing you to focus on the market-differentiating value-added features of your
application software. Reduces time to market and project costs; and when you
complete your development, reuse it across different products and technologies to
expand your markets and opportunities.
Create a proof of concept in record time and with minimal investment. Leverage
robust building blocks to shorten your development cycles through to mass
deployment.
General Description

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ZETA Series
GPRS/UMTS/LTE Modem with GPIO
ZETA-G-GPRS ZETA-G-UMTS ZETA-G-LTE
2G frequency band: B8(900), B3(1800) B8(900), B3(1800) B8(900), B3(1800)
3G frequency band: - B8(900), B1(2100) B8(900), B1(2100)
4G frequency band: - -
B1(2100), B3(1800),
B7(2600), B8(900),
B20(800)
GPS support: GPS, Glonass, Galileo GPS GPS
Dimensions: 93 x 67 x 28mm 93 x 67 x 28mm 93 x 67 x 28mm
Weight: 107g 107g 107g
Supply voltage: 5 - 42V 5 - 42V 5 - 42V
Operating temperature: -30 to +80°C -30 to +80 °C -40 - +85 °C
Cellular antenna connector: SMA Female SMA Female SMA Female
GPS antenna connector: SMA Female SMA Female SMA Female
Table 2. Specications of the ZETA modem with GPS
Specications
ZETA-N2-GPRS ZETA-N-UMTS ZETA-N-LTE
2G frequency band: B8(900), B3(1800) B8(900), B3(1800) B8(900), B3(1800)
3G frequency band: - B8(900), B1(2100) B8(900), B1(2100)
4G frequency band: - -
B1(2100), B3(1800),
B7(2600), B8(900),
B20(800)
Dimensions: 93 x 67 x 28mm 93 x 67 x 28mm 93 x 67 x 28mm
Weight: 104g 104g 104g
Supply voltage: 5 - 42V 5 - 42V 5 - 42V
Operating temperature: -30 to +80°C -30 to +80 °C -40 - +85 °C
Cellular antenna connector: SMA Female SMA Female SMA Female
Table 1. Specications of the ZETA modem without GPS

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ZETA Series
GPRS/UMTS/LTE Modem with GPIO
Table 3. Modem data transfer speeds
Model Region Cellular Coverage GPS Coverage Max Download Max Upload
ZETA-N2-GPRS Global 236.8Kbps 59.2Kbps
ZETA-G-GPRS Global Global 236.8Kbps 59.2Kbps
ZETA-N-UMTS Global 21Mbps 5.76Mbps
ZETA-G-UMTS Global Global 21Mbps 5.76Mbps
ZETA-N-UMTS (EU) (Europe) 7.2Mbps 5.76Mbps
ZETA-G-UMTS (EU) (Europe) Global 7.2Mbps 5.76Mbps
ZETA-N-LTE (EU) (Europe) 100Mbps 50Mbps
ZETA-G-LTE (EU) (Europe) Global 100Mbps 50Mbps
NOTE - For part numbering and ordering information see page 14

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ZETA Series
GPRS/UMTS/LTE Modem with GPIO
AT Commands
The ZETA range of wireless modems has a cellular engine at its heart which can be
controlled via the serial interface using standard AT commands.
The AT command is an ATTENTION command and is used as a prex to other
parameters in a formatted string. The AT command combined with other parameters
can be sent to the modem with your preferred terminal emulator package (TMSTerm/
TeraTerm/HyperTerminal) and typed in manually as a command line instruction.
The wireless module is compliant with the following AT command formats:
1) Hayes standard AT command set, in order to maintain the compatibility with
existing SW programs.
2) 3GPP 27.007 specic AT command and GPRS specic commands.
3) 3GPP 27.005 specic AT commands for SMS (Short Message Service) and CBS
(Cell Broadcast Service)
4) FAX Class 1 compatible commands
5) Proprietary command set, the module family also supports a proprietary set of AT
commands for special purposes outside of the standard AT specication.
To obtain the latest AT command reference guide* with a full list of supported AT
commands, please contact your Siretta representative or alternatively visit:
www.siretta.com
NOTE - This following document refers to useful AT commands throughout and offers
descriptions of how to use the AT commands with the ZETA wireless modems.
*For GPRS modems refer to the GPRS AT Command Manual, for UMTS modems refer to the
UMTS AT Command Manual, for LTE modes refer to the LTE AT Command Manual.

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ZETA Series
GPRS/UMTS/LTE Modem with GPIO
ZETA Interface
Standard Hardware Interfaces
The ZETA series modem comes with the following interfaces:
»1 x RS232 serial port interface for direct serial connection to module
»1 x RJ12 power connection with 2 power lines (5 - 42V) and 4 input interfaces
»1 x SMA female cellular antenna connector
»1 x SIM card reader (push-push)
»3 x external LED status indicators (Blue, Red, Green)
»10-Way connector
○1 x wired (10-way) RS232 debug port for direct serial connection to module
○1 x wired (10-way) 3.3V power supply output interface
○1 x wired (10-way) 12-bit ADC interfaces (42V tolerant)
○2 x wired (10-way) general purpose input interfaces
○1 x wired (10-way) general purpose output interface
○2 x wired (10-way) general purpose input/output interfaces

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ZETA Series
GPRS/UMTS/LTE Modem with GPIO
Optional Coverage
The ZETA series modems have the following coverage options available:
»(EU) European Union
»(NA) North America
»(GL) Global
Optional Technologies
The ZETA series modems have the following optional technologies available:
»GPRS (2G)
»UMTS (3G)
»LTE (4G)
Optional Modem Features*
Optional Hardware
The ZETA series modems have the following optional hardware features:
»1 x SMA female GPS/GNSS antenna connector
*To add optional features on your modem, see ordering Information on page 14

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ZETA Series
GPRS/UMTS/LTE Modem with GPIO
System Diagram
Figure 1. ZETA system diagram
The ZETA series is a versatile range of modems offering multiple communication
channels and interfaces to connect into other systems. The system diagram below
gives a visual representation of the ZETA interfaces available to the user and shows
the various subsections which make up the complete ZETA modem.
Cellular
5 - 42V
PSU Power Input
SIM
RS232 Serial Port Interface
Visual Indicators
Power Supply Subsection
Communication Subsection
USB Port
Telit xE910
Module
GPS
Debug Serial Port
10-way Connect Interface
2 X I
1 X O
2 X I/O
1 x ADC
1 x 3.3V Power Output

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ZETA Series
GPRS/UMTS/LTE Modem with GPIO
This ZETA can be used in a number of applications, some examples are shown
below:
»GPIO Monitor (Monitor/Set and report on GPIO status)
»Standard RS232 modem attached to existing equipment (PC/MAC/Server etc.)
Typically connected devices are:
»PC/MAC/Linux platforms for use as modem
»Embedded (connected directly to remote equipment without a PC attached)
Operating System Connected Modem
»Internet enable a remote device with RS232 connectivity over 2.5G/3G/4G.
Internet connectivity can be retrotted to end equipment without changing the
software or conguration of the remote device.
»Used in countries or places where broadband and WiFi is a less common method
to connect to the internet or where services are unavailable. The ZETA modem
can overcome this restriction by providing a mobile internet solution over the
GPRS/UMTS/LTE network.
System Overview

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ZETA Series
GPRS/UMTS/LTE Modem with GPIO
Examples:
»Vending machine where the head ofce would poll for drinks remaining/money
taken etc. This would be an on-demand pull to obtain results in real time.
»Monitoring AMR/temperature/equipment in a home, i.e. Interrogate lights etc.
»Monitoring GPIO, i.e. Open doors/windows
»Remote entry system, i.e. Send a message to the modem to open a gate/door to
allow access.
»Streaming live data from remote system to a central location
»Remote printing applications (remotely print over the GPRS network)
»Polling remote devices for information to prevent an engineer callout
USB Interface
This is a USB standard Communication Device Class (CDC) device. A device driver
is available for Windows OS. Linux uses standard CDC ACM drivers. Please contact
your siretta representative for more information.
Modes of Operation

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ZETA Series
GPRS/UMTS/LTE Modem with GPIO
Ordering Information
ZETA XX XXXX (XX)
Module Type
N = Revision 1 without GPS
N2 = Revision 2 without GPS
G = Revision 1 with GPS
Product Module Version
GPRS = GPRS Technology
UMTS = UMTS Technology
LTE = LTE Technology
Coverage Options
(EU) = European Coverage
(NA) = North American
(GL) = Global Coverage
Part Numbering Examples
»ZETA-N2-GPRS = GPRS Modem with GPIO, without GPS
»ZETA-G-UMTS (GL) = Global Coverage UMTS and GPS Modem with GPIO
»ZETA-G-LTE (EU) = EU Coverage LTE and GPS Modem with GPIO
Modem Identier
ZETA = Siretta Modem with GPIO
- -

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ZETA Series
GPRS/UMTS/LTE Modem with GPIO
Dimensions

All dimensions are shown in mm. The mounting holes are suitable for a M3 xing
screwing. These drawings are relevant for the entire ZETA series modems.
Figure 3. ZETA modem serial connector view - dimensions
Figure 2. ZETA modem GPIO 10-way connector, SIM holder and LED indicator view - dimensions

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ZETA Series
GPRS/UMTS/LTE Modem with GPIO
Figure 5. ZETA-N modem antenna and power view - dimensions
All dimensions are shown in mm. The mounting holes are suitable for a M3 xing
screwing. These drawings are relevant for the ZETA-N modems.
ZETA-N Modems

Figure 4. ZETA-N modem top view - dimensions

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ZETA Series
GPRS/UMTS/LTE Modem with GPIO
28
67
15.25 17.55
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AMENDMENTS JOB NUMBER DRAWING TITLE STATUS PROJECT INFO
COPYRIGHT WARNING These drawings and designs remain the property of Sequoia Technology Group. Any unauthorised use will render the offender liable for damages.
ALL DIMENSIONS ARE IN UNLESS OTHERWISE STATED
Sheet1
DRAWING: X:\Sequoia Design\Sequoia\SQ864\ SQ864 Dual Antenna
MODEL: X:\Sequoia Design\Sequoia\SQ864\ SQ864 v2.0
DESIGNER
03/05/2013
ISSUE DATE
DO NOT SCALE OFF DRAWING EMAIL [email protected] FOR DXFS OR OTHER SCALABLE FILES.
Page No: 01 /01
GENERAL NOTES:
PART NUMBER
REV
SCALE
All dimensions are shown in mm. The mounting holes are suitable for a M3 xing
screwing. These drawings are relevant for the ZETA-G modems.
ZETA-G
Figure 7. ZETA-G modem antenna and power view - dimensions
Figure 6. ZETA-G modem top view - dimensions
28
67
15.25 17.55
15.4
17.5
FRONT ELEVATION
100
SIDE ELEVATIONSIDE ELEVATION
100
55
19
45 11
PLAN
1:1 @ A3 Sheet Size
A B C D E F G H I
7
6
5
4
3
I H G F E D C B
2
A
1
AMENDMENTS
JOB NUMBER
DRAWING TITLE
STATUS
PROJECT INFO
COPYRIGHT WARNING
These drawings and designs remain
the property of Sequoia Technology
Group. Any unauthorised use will
render the offender liable for damages.
ALL DIMENSIONS ARE IN UNLESS OTHERWISE STATED
Sheet1
DRAWING: X:\Sequoia Design\Sequoia\SQ864\ SQ864 Dual Antenna
MODEL: X:\Sequoia Design\Sequoia\SQ864\ SQ864 v2.0
DESIGNER
03/05/2013
ISSUE DATE
DO NOT SCALE OFF DRAWING
EMAIL [email protected] FOR DXFS OR OTHER
SCALABLE FILES.
Page No: 01 /01
GENERAL NOTES:
PART NUMBER
REV
SCALE

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ZETA Series
GPRS/UMTS/LTE Modem with GPIO
ZETA Series Images
Figure 8. ZETA-N variant Figure 9. ZETA-G variant
Figure 10. 3D view of the ZETA

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ZETA Series
GPRS/UMTS/LTE Modem with GPIO
LED Indicators
There are 3 LED outputs on the ZETA modem coloured green, red and blue. By
default, these show the functional/operational state of the modem. However, these
may also be congured using software control by the user for other indication
purposes. Table 4 describes the functions of the LEDs.
Table 4. LEDs
Figure 11. LEDs
Green LED
Red LED
Blue LED
LED At power up or PWRON_IN / PWROFF_IN control After power up
Blue Rapid blink during power on, otherwise off Off / User dened
Red Undened state Network registration state / call indication
Green Rapid blink during power off, otherwise off Off / User dened
On initial application of power, all LEDs will briey illuminate. During power up,
the green and blue LEDs are controlled directly by the ZETA, and the red LED is
controlled by the embedded modem module. While the ZETA is in the power up state
the blue LED will ash rapidly (300mS on, 300mS off) and the green LED will be off
until the power up process is complete. After the power on process has completed,
the blue and green LEDs become user congurable outputs.
Power Up LED States

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ZETA Series
GPRS/UMTS/LTE Modem with GPIO
Table 5. Red LED Behaviour
ZETA Version Not Registered Registered Call in Progress
GPRS (2G) Fast blink
(0.5s on, 0.5s off)
Slow blink
(0.3s on, 2.7s off) On
UMTS (3G) On Blink
(1s on, 2s off) On
LTE (4G) On Blink
(1s on, 2s off) On
The red LED behaves slightly differently dependant on the ZETA version. Table 5
describes the behaviour.
Red LED Network Registration State / Call Indication
NOTE: Updating the embedded modem module rmware will change the way in which
red LED behaves as default settings will be restored. Customer AT commands that control
GPIO1 will also affect the behaviour of the red LED. Siretta factory default settings for the
red LED can be restored using the following AT commands in table 6 below.
Table 6. AT commands to set default red LED behaviour
ZETA AT Command(s) to restore defaults
GPRS (2G) AT#SLED=2 followed by AT#SLEDSAV
UMTS (3G) AT#GPIO=1,0,2
LTE (4G) AT#GPIO=1,0,2
Table 7. Green and blue LED AT commands
LED On Off
Green AT#GPIO=3,1,1 AT#GPIO=3,1,0
Blue AT#GPIO=2,1,1 AT#GPIO=2,1,0
The green LED is connected to GPIO3 of the module and the blue to GPIO2. Both
LEDs may be independently controlled as outputs using AT commands. The default
setting is that these LEDs are off. Table 7 shows the commands for changing the LED
states. These settings are volatile and are lost when power fails. More recent rmware
releases have options to allow this setting to be made permanent. Please read about
the AT#GPIO command in the AT Commands Reference Guide for more information.
Green and Blue LED User Control