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Long-Range VHF With Network Management
Capturing the 30 to 50 percent wider coverage of the VHF frequency band, the NMS VHF features an original software architecture and operates in the 135...174 and 218...238 MHz frequency bands.
Featuring built-in SATEL NMS software which provides a powerful graphical tool for designing radio networks, monitoring link quality and site configuration and diagnostics, SATELLINE-3AS(d) VHF modems can be used in NMS or in transparent mode with a power range of either 100 mW – 1 W, or 1 W – 5 W.
Cost savings through:
- Enhanced reliability, through advance indication of anticipated faults
and failures
- Reduced configuration and maintenance costs with remote configuration
- Easy to use graphic network development tool
- A virtual mesh network for polling protocols in licensed long range VHF
Additional features
Graphic Network Design
Drag-and-Drop routing and step-by-step settings guide users intuitively through initial setup and allow for rapid changes.
Selectivity or Sensitivity as Needed
Capable of communicating even in environments with sporadic 12 dB weaker interference
on the exact same frequency, SATELLINE VHF 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.
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.
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.
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.
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 transparently 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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