Javad FH915, Руководство оператора

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Chapter 2
11 www.javad.com
P
RODUCT
F
EATURES
2.1. Introduction
FH915 radio transceiver is designed as universal license-free modem. It uses 902-928 MHz ISM
(industrial, scientific and medical) license free USA/Australia band frequency hopping transmission
techniques for excellent reliability in noisy plant environments and European CEPT license free 868-870
MHz band, allocated for narrow band telemetry, alarms and data transfer applications.
Thanks to its small size, and multiple functions, the FH915 is specifically well suited for amount of
applications within industrial complexes, for various indoor as well as medium-range applications.
The unmatched features of FH915 include data scrambling, frequency hopping, user selectable transmit
output power level, low power consumption sleep modes, repeater mode, autoscanning for base and plug-
and-play installation for remote terminals.
Figure 2-1. FH915
FH915 supports two separate Application Data and Maintenance modes of single UART serial port. The
built-in software tools provide the wireless link testing, unit’s status and error statistics monitoring as well
as unit’s settings change over the air. The firmware of the FH915 radio transceiver resides in a flash
memory. The updating of the radio transceiver programs is entirely software-based. The flash memory is
re-programmable through an UART interface or over the air.
The FH915 is developed for exacting customer needs and to have pin-to-pin compatibility with OEM
radios of JAVAD GNSS.
The Spread Spectrum transceiver is also capable of receiving RF signals through a 50 Ohm impedance
external antenna port.
The delivered product is a wireless system, which includes:
• FH915 – Spread Spectrum Radio Transceiver;
• AWLaunch – Windows based Unit Configuration and Maintenance Software Application running
on a IBM PC compatible computer and connecting to the device over RS-232 interface or USB-
to-Serial adapter.