GE MDS TransNEXT NET9L, Technical Manual

Page: 35 / 69

MDS 05-7280A01, Rev. A MDS TransNEXT Technical Manual 35
NOTE
Some countries may employ lower EIRP limits. Check the regulatory rules and turn down
power as needed to ensure compliance.
3.3.2.2 radio.addr [1-65000]
This is the radio’s Network Address. Valid network addresses range from 1 to 65000.
A Network Address must be programmed at the time of installation and must be common across each
radio in a given network. Radios are typically shipped with network address set to 0. This is a special
reserved value indicating address is not set. If the address is not set the system will be in an invalid state,
preventing operation and generating an alarm.
NOTE
We recommend that the last four digits of the Master radio’s serial number be used for the
network address. This helps avoid conflicts with other users.
3.3.2.3 radio.xaddr [0-31]
This is the radio’s Extended Address. The item is only applicable for a Master or Extension radio. Valid
extended addresses range from 0 to 31. Default is 0.
Extended Address serves as a common address for the sub-network synchronized to this Master or
Extension. This value can be listed in the radio.xpri parameter of associated Extension or Remote radios
to allow them to synchronize to this radio. Setting the Master to zero (0) is recommended. It is easy to
remember, and works well with other radio default settings.
3.3.2.4 radio.hoptime [7 or 28]
This controls radio hop timing. The item is a value corresponding to the hop-time setting in milliseconds.
7 and 28 are the only choices. Default radio.hoptime is 7. A setting of 28 must be used when throughput
exceeds 57,600 bps and is recommended when data transmission sizes exceed 256 bytes.
Changes to the radio.hoptime may only be made at the Master radio. (This is because the Master radio
establishes the hop-time setting for the entire network.) At Remote radios, the hop-time setting may be
read when the radio is in synchronization with the Master, but it cannot be changed.
3.3.2.5 radio.fec
[“on” or “off”]
This item controls Forward Error Correction. The default setting is “on”. (It needs to be turned off when
throughput exceeds 57,600 bps.). The radio.fec value is set at the Master and is automatically passed on
to all Remotes in a network.
3.3.2.6 radio.retry [0-10]
This item affects upstream data. The value represents the maximum number of times (0 to 10) that a
Remote radio will re-transmit data. The default setting is 10.
This item is associated with ARQ (Automatic Repeat Request) operation of the radio and is intended for
use in areas with heavy radio interference. A value of 0 represents no retries, while values of 1 or greater
successively improve the chance of data delivery in spectrally harsh environments (at the expense of
possibly increased latency). The radio.retry value is only settable at the Master. It is readable by a
synchronized Remote.