2.10 ADDITIONAL FEATURES
The URT500 incorporates the following additional features which enhance the usability of the product
and assist with the operation and maintenance of systems using the product:-
2.10.1
STATUS LED’S:
The URT Radio Modems have a number of front panel LED’s to enable the operator to see at a glance
the status of the product and the serial data port.
2.10.2
ANALOGUE RSSI OUTPUT
In addition to the ability to get a reading of the receive signal strength using a connected PC, the
URT500 also has a voltage output which is proportional to the signal strength to assist with antenna
alignment and network troubleshooting.
2.10.3
TIME-OUT TIMER
The transmitter within the URT500 has a user programmable time-out timer which allows the maximum
continuous transmission time to be set in order to prevent channel blocking due to a fault.
2.10.4
SQUELCH TAIL ELIMINATOR
Where the presence of a Mute (Squelch) tail may cause problems at the end of a message, a simple
packetising option can be enabled to resolve the situation.
2.10.5
POWER-SAVE MODES
The URT500 has both internally controlled and externally controlled power-save modes to reduce
overall power consumption to extremely low levels for operation on sites without mains power.
2.10.6
FORWARD ERROR CORRECTION
When using the internal modem at 9600bps, an optional Forward Error Corrector can be switched in to
improve the receiver threshold.
URT500 Manual
Page 7 of 42
Rev. C – 6 August 2008
