Installation manual

186 | Simrad MX500
MX500/BRIM Dual-Control with Integrity
Monitoring Feature
The Integrity Monitoring (IM) feature allows the two
dual-control MX500 units to constantly compare each of
the two GPS position solutions and, if configured to do
so, give an alarm and/or automatically switch to the unit
with the “better” GPS solution.
MX500
Power &
NMEA Data
Interface
Ext. MOB
Spd. Pulses
Ext. Alarms
LAN
RJ-45
Conn.
Cross-Over
Cable Assy.
UNIT #2
MX500
Power &
NMEA Data
Interface
Ext. MOB
Spd. Pulses
Ext. Alarms
LAN
RJ-45
Conn.
UNIT #1
Note: BRIM license required on both Mx500 units
Both Master and Slave units are functional D/GPS receiv-
ers and both continuously calculate GPS solutions. The
IM algorythm continuously compares the two position
solutions. If the GPS Source is set to Automatic, it be-
gins by using the Master calculated position. However, it
continuously compares the “used” solution to the “other”
solution. If the “other” solution is better, it will switch to
use that position solution. Essentially, the Master mode
will transfer automatically to the unit whose position so-
lution is being used for navigation.