A member of the Olancha Group Ltd
Registered in England No. 08405712
VAT Registration No. GB163 04 0349
Siretta Ltd
Basingstoke Road
Spencers Wood
Reading
Berkshire RG7 1PW
sales
fax
email
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+44(0)118 976 9014
+44(0)118 976 9020
www.siretta.co.uk
54
ZETA Series
GPRS/UMTS/LTE Terminal with GPIO
Definitions
Term
Definition
2G
2nd Generation Mobile Telecommunications
3G
3rd Generation Mobile Telecommunications
ADC
Analog to Digital Converter
AMR
Automatic Meter Reading
AT
Attention
CBS
Cell Broadcasting Service
CPLD
Complex Programmable Logic Device
CSD
Circuit Switched Data
EGNOS
European Geostationary Navigation Overlay
Service
GND
Ground
GPI
General Purpose Input
GPIO
General Purpose Input Output
GPO
General Purpose Output
GPRS
General Packet Radio Service
GPS
Global Positioning System
GSM
Global System for Mobile Communications
I/O
Input/Output
LED
Light Emitting Diode
LNA
Low Noise Amplifier
LTE
Long Term Evolution
M2M
Machine to Machine
MSAS
Multi-functional Satellite Augmentation System
RF
Radio Frequency
RS232
Radio Sector
RX
Receive Signal
RXD
Receive Signal
SIM
Subscriber Identity Module
SMA
Sub Miniature Version A
SMS
Short Message Service
TTFF
Time To First Fix
TTL
Transistor - Transistor Logic
TX
Transmit Signal
TXD
Transmit Signal
UART
Universal Asynchronous Receiver/Transmitter
UMTS
Universal Mobile Telecommunications System
(Same as 3G)
USB
Universal Serial Bus
WAAS
Wide Area Augmentation System
Vcc
Positive Power Supply
Vin
Input voltage
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