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Diversity Recption & More Power
From mountain tops to race cars, the SATELLINE 3AS(d) EPIC/C maximizes mobile
and indirect connections with the powerful combination of a maintenance-free 10 Watt
transmitter and two separate SATELLINE receivers packed into a shock and vibration proven housing.
Uniquely featuring dual receiver spatial diversity reception, which automatically
chooses the best signal from two independent receivers the EPIC virtually eliminates the need for a “line of sight”
connection. Direct visual connection between the master station and substations or even moving
remote stations is not needed.
Spatial Diversity Receiver
Overcome the problems of mobile and non line of sight connections with SATELLINE.
Generally, indirect connections suffer from signal fading as radio signals reflecting off of buildings, terrain
and other objects arrive to the receiver “out of phase” cancelling each other and causing the signal to “fade”
in and out. (Think of a traditional car radio signal as you drive about town and the signal becomes stronger and weaker.)
Technically, these dips of the signal, also called fading, or cross fading; appear at half-wave intervals (wavelength
calculator).
In link connections based only on reflections, the reliability of a received
signal depends on the position of the receiving antenna in order to receive the best signal (sometimes only
inches can make the difference). By utilizing the EPIC’s dual receiver spatial diversity and setting two
antennas at least ¾ x wavelength apart from each other, the message can always be received by one of the
receivers, if not both- virtually eliminating fading from mobile and indirect radio connections.
SATEL’s exclusive spatial diversity receiver automatically chooses the
best signal from two independent receivers; virtually eliminating the need for a “line of sight”
connection. Direct visual connection between the master station and substations or even
moving remote stations is not needed.
Precision Tuned Receiver
Set apart from similar products by our proprietary
board design, and specialized industrial class superheterodyne receiver; SATEL’s
exclusive SATELLINE technology enables dependable UHF communication in extreme
conditions when similar products fail.
Using a finely tuned narrow (2 MHz) receiver range
and then physically cancelling out the remaining electromagnetic noise on both
sides of the selected channel, connections can be kept alive even if received
signals drop as low as -115 dBm!
Selectivity or Sensitivity as Needed
Capable of communicating even in environments with
sporadic 12 dB weaker interference on the exact same frequency, SATELLINE UHF radio
modems have adjustable signal threshold to focus only on selected stronger signals
enhancing operation in densely populated areas and regions with excessive ambient
radio frequency noise.
Analog RSSI Output
SATELLINE 3AS & EPIC modems feature an analog output
of received signal strength which can be connected to local control system hardware
to enable monitoring of the link quality and ambient noise levels within any desired
application. This free feature must be stated at time of order.
Forward Error Correction
Encapsulating device data packets network wide with
self-correcting algorithmic data, FEC, gives SATELLINE radio modems the internal tools
to actually eliminate erroneous bits and reconstruct the original data packet when there
are slight errors from long distances or heavy interference.
Error Check
When data quality is essential, SATELLINE radio modems
come with SATEL’s proprietary Error Check and full CRC16 error checking which can be
set to either completely reject any data packet with errors transparently, or pass the
packet and checksum intact to a device master.
Free Channel Scan
Continuing to research ways to reduce and eliminate difficulties
that plague many wireless installations, SATEL’s exclusive Free Channel Scan (FCS) feature is
a powerful multipurpose tool for shared channels, frequency pools, mobile and temporary
networks, or to add versatility to one-way transmission between a transmitter and one
or more receivers when there are multiple frequencies available.
In two-way data networks sharing a set of frequencies or
in mobile applications when a clear channel must be established before use, a channel list
is entered into the free FCS graphic interface software turning SATELLINE radio modems into
a simplified spectrum analyzer monitoring and displaying the noise level for each frequency
allowing the user to select the optimum channel.
In one-way data transmission networks, FCS automates the use
SATELLINE modems. While transmitting, the base station and repeater radios automatically listen
for channel disturbances, change to, and transmit on the best available frequency; while
synchronized remote receivers scan all available channels for a base station transmission
beacon anytime a connection is lost because of interruptions on shared channels, movement
of other users in a frequency pool, or to move from one data transmitter to another.
FCS software and the User Guide are available for free download.
LED Indicators
There are 5 clearly marked and intuitively colored LEDs that show the current status of the SATELLINE modem. There are indicators for the data modem sending and receiving to the device; radio transmitter and receiver activities; and radio frequency channel status- including if it is in use by an unknown party.
Display & Operator Interface
Crowning SATELLINE advanced technology is the built-in backlit LCD display that provides users with vital diagnostic information about received signal strength, frequency, power supply and data settings at a glance. Durable pushbuttons give instant access to virtually all of the radio settings through easy to read menu selections. SATELLINE “D” display models allow for setting up, using, configuration changes, and testing to all be done without ever using a laptop, PC or any other device.
Simple & Accessible Programming
Mechanically switched into programming mode by grounding the “Programming-Pin”, all of the radio settings are accessible using any terminal software. Self-guiding menus clearly display settings and selectable options in plain English. SATEL’s SaTerm software simplifies advanced configuration by providing an additional graphic interface for some of the more complex aspects like message routing, creating settings profiles, and updating firmware.
Transparent Wireless Communication
Eliminating complicated external synchronizing signals by using asynchronous data streams, the entire data stream is transmitted less than 1 millisecond after it is received arriving at the other end intact and without interruption or re-packetizing and allowing for the highest level of transparency to connected devices.
Test Mode
Cutting down on installation and repair times, SATELLINE radio modems feature short and long block testing to simplify antenna testing and alignment, link, system and path tests. When combined with the benefits of conveniently displayed signal strength on the receiving modem, antenna installation times are reduced to a minimum.
Repeater Functionality
All SATEL radio modems are capable of store-and-forward repeater functions or may be paired together for duplex repeater operation. Repeater functionality allows for virtually endless connection range and network coverage. Message routing and addressing functions can be added to create robust and far-reaching network topologies.
Advanced Addressing Functions
Configurable with dual transmission and receive addressing and network identification, SATELLINE radio modems can remain transparent and universally compatible with devices while still extending networks across longer distances through one or more repeaters or to isolate multiple sub-networks without receiving duplicated or conflicting device data.
Automatic Message Routing
By identifying source and destination addresses for data in many pre-configured or user defined polling data protocols, SATELLINE radio modems automatically direct data packets to their destination by finding the route within the radio network itself transparently to connected devices. Routes are automatically created if a remote location is moved, a repeater station is lost, or in systems with mobile remote devices. The AMR function is configured using SATEL’s free SaTerm PC software. With SaTerm, allows users are able to graphically design a radio modem network, troubleshoot, and make radio modem firmware updates by simply drawing connections between radio modems, while routing information is automatically generated.
SL-Commands
Advanced control and diagnostics are available from all SATEL radio modems using SATEL Language (SL) Commands. Experienced users and manufacturers with integrated SATEL solutions can utilize “SL-Command” blocks to interact directly with all SATELLINE radio modems.
Flexible Data Interface
Capable of operating on as little as 3-wire (Tx, Rx, & ground) communication or as much as 25-pin rs-232 with full hardware handshaking; SATELLINE radio modems directly accept most common wiring formats, including RS-232, 485 & 422.
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