User's Manual

Page 47
M Series Data Radio – User Manual
© Copyright 2004 Trio DataCom Pty. Ltd.
System Parameters
This section of the main window configures the PTT control, collision
avoidance, stream setup for routing of data, advanced features and
provides unit information.
PTT (Press To Talk) Control
RF transmission can be configured to occur permanently,
automatically on data received at Port A or Port B (E Series only), or
RTS being asserted on Port A or Port B (E Series only). A PTT
timeout facility can be configured to limit the period for which the
transmitter is enabled. Each option is selected by setting the control to
the left of the description on the main window. When PTT is active the
“Tx” LED on the unit is illuminated and RF power is being fed to the
antenna.
Auto On Data
This will cause the transmitter to be enabled (keyed) automatically on
data received at Port A or Port B (E Series only) and included in a
complete frame for transmission over the radio channel. The maximum
period for which the transmitter will be enabled is limited by the PTT
timeout setting.
From Port A RTS
This will cause the transmitter to be enabled (keyed) on Port A RTS
being asserted. The maximum period for which the transmitter will be
enabled is limited by the PTT timeout setting. Applications which rely
on establishing a link ahead of data being transferred require this
method of activation.
PTT Timeout
The PTT timeout facility is used to disable the transmitter if it exceeds
the designated time. The timeout value can range from 1 to 255
seconds and the facility is disabled by setting a zero value.
The timeout value chosen for this should be set according to system
requirements which may include:
• Prevention of a remote unit remaining keyed up and locking out
all other remote units in a point to multipoint system.
• Limiting the period a remote unit remains keyed up to prevent
battery drain in a low power application.
Note: If a PTT timeout occurs before completion of a data
transmission data will be lost.
Part H – TVIEW+ Management Suite - Programmer
The information displayed is intended to assist the user to identify the
radio modem as well as support should their services be needed.
Radio Model refers to the type of unit. The MR450 is a remote
unit and the EE450 is a exciter inside a base station unit.
Radio Type refers to the frequency band supported by the radio
as well as the channel bandwidth. For example 51A02 is a type
51 band with a 25kHz channel.
Diags Installed is set to yes or no depending on whether the
diagnostics key has been set in the unit.
Serial Number is unique to each unit and is set within the unit at
time of production as well as included on the label fixed to the
unit.
Firmware Pack refers to the firmware package version installed
in the radio. There are several components associated with
microcontroller and DSP firmware installed and a single version
number is used to identify them.
Unit Information