NorthStar MX500 Operator's & Installation Manual page 189

Multiple Unit Control
The interface among the units takes place over a high speed (100
Mbps) data link. The master unit must be connected to the antenna.
The master unit receives the NMEA signals from an MX antenna and
pass it along to the slave and repeater units at a one second rate. Due
to the high speed data link, there is virtually no visible position delay
among the units.
When the units are first configured as master, slave, and repeater, the
master unit mirrors to the slaves and repeaters, and the Common Data
Base (see Table D-1) is downloaded from the master to the slaves and
repeaters. This function also takes place each time the units are pow-
ered up. If you happen to have the CFG1 Dual Control screen active,
the status bar will indicate Mirroring during the database update pe-
riod.
Version 3.0
Operator's Manual
175