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TD220_manual12.doc
Page 21 of 38
1/10/2011
5.3 Base System Configuration Menus
Parameter
R/W
Description
A) Unit Type
R/W
Bases send beacons out once per epoch and coordinate
downstream messages. Mobiles listen to bases to identify free
slots, and then select random slots in which to place their
upstream messages.
B) Base Unit Zone
R/W
Bases are one of three types, A, B, and C. Each base coordinates
slots in the epoch assigned to that base and transmits
downstream. Base types repeat along lines of track (A, B, C, A, B,
…)
C) Window Size
R/W
When a mobile is ready to transmit, it chooses at random from
2^(Window Size) slots to minimize collisions with other units.
D) ITCS UDP Receive
Port
R/W
Wayside devices send UDP messages to this IP port on the radio’s
network interface for transmission over the air.
E) Timing Signal
Timeout
R/W
If the GPS Pulse Per Second input is missing for this duration, the
radio asserts an alarm.
F) ITCS Translation
Table
Access the ITCS Address Translation Table to add or delete routing
entries.