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E Series Ethernet Radio – User Manual
Version 08-10
The diagnostics facility also uses SID codes. The diagnostics
data simply uses a different data stream to the user data, but is
processed internally by the modem. If access to the diagnostics
facility is required, similar to when the diagnostics utility is used
with the modem, then the data port concerned and the diagnostics
stream, must have the same SID codes assigned to them.
Alternatively the System port can be used, which is 19.2K, Slip.
Trunk Streams
In the Trunk Streams mode, data that is inputted into the modem
for transmission must have a SID code appended to the start of the
data packet. This mode requires the use of a “SLIP” interface as
configured using the packet layer.
Trunk Steam mode is normally used in conjunction with Trio
Diagnostics software, when connection to a MSR Stream Router
or when connecting radios together such as a back-to-back
connections as used in multiple point to point links.
In Trunk Stream mode a range of SID codes can be transmitted
and received via a data port. This range is specified when this
mode is selected. In a typical application, such as a back to back
connection as used in a multiple point to point links, where all
data (including diagnostics) from one radio needs to be “trunked”
through to the other radio, the range used is 0 to 255. Trunked
mode allows a configurable selection of data streams to be
“trunked” to other equipment yet the data remains separated as the
SID codes are appended to each packet of data outputted.
Repeat/Translate Configuration
The modem is capable of operating in a repeater mode. Each user
port can be configured as a separate repeater. The associated
user ports are effectively disconnected from the “outside world”
when in repeater mode. Data received from the radio channel is
passed directly to the transmitter, and placed back onto the radio
channel.
The repeater must receive a complete frame of data before it
is retransmitted. In some systems this store and forward delay
may be significant, and careful selection of maximum frame sizes
configured at the source unit must be considered to minimise the
delay.
To enable the mode select “Repeat Range” in the Type field and
specify the range of SID codes for which will be repeated.
Maximum of 2 repeat ranges can be used, ensure there is no
overlap of SID ranges.
Part I – TVIEW+ Management Suite - Programmer
Translate Streams
This function is similar to repeat streams however it also translates
the SID code from one value to another as the repeating function
occurs.
This mode can be used to controlled data repeating in systems
where more than one repeater is required, such as store and
forward system or pipe-lines. If translate is not used then a ‘Ping
Pong’ effect would occur between to adjacent sites.
Maximum of 16 translates can be used. Do not translate from the
same SID more than once.
Diagnostics Setup
Polled Diagnostics
The Diagnostics Processor can be configured to listen for
diagnostics on a range of SID codes. The factory default is SID
code 0 (From Stream 0 To Stream 0). The diagnostics responses
are sent back over the same stream as the questions.
Diagnostics Repeat
This option can be toggled on and off by clicking the button. Some
applications will require that a repeater unit in a point to multipoint
system repeats diagnostics frames only.
This will be the case when the system diagnostics controller is
connected to a remote unit in the system, and it polls the system
population from this point. The master unit must retransmit
any diagnostic frames that are not addressed to itself onto the
remainder of the population.
