Backup Eicas Display - Honeywell PRIMUS 1000 Pilot's Manual

Backup EICAS Display

Either radio management unit (RMU) can be selected to display certain
EICAS data in abbreviated format. Under some conditions, the No. 1
RMU can be automatically selected to display engine data. Normal
operation of the RMU is described in Honeywell Pub. No. 28--1146--050.
This section describes the use of the RMU for the backup EICAS
display.
Normally, the RMU page (PGE) button is used to select the EICAS
displays. Redundant sources of 28 Vdc power are connected to the
RMUs and both DAUs to ensure display and data availability. If neither
DGC is outputting the EICAS display format, the No. 1 RMU
automatically displays the first of two EICAS pages.
NOTES: 1. Manual or automatic selection of the RMU EICAS
2. Returning the RMU to the communication and
A28--1146--112--00
display allows access to the first of two pages. Even if
the second page is selected, the first page is always
displayed after 20 seconds of no RMU selections.
navigation function is done by pushing the RMU PGE
button. However, if the No. 1 RMU is displaying EICAS
information due to an automatic selection, that RMU
returns to the EICAS display 20 seconds after the last
pilot selection on the RMU. When the automatic
selection conditions are normal, the No. 1 RMU returns
to the main RMU tuning page by itself.
Engine Instrument and Crew Alerting System (EICAS)
PRIMUSr1000 Integrated Avionics System
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