Embraer EMB145 Operation Manual page 2261

NAVIGATION AND
AIRPLANE
COMMUNICATION
OPERATIONS
MANUAL
ENGINE BACKUP PAGE
The ENGINE Backup Page displays information normally presented on
the EICAS, as engine and systems indications, as well as EICAS
messages. The ENGINE Backup Page is divided into two pages. The
first presents only engine indications, while the second presents
systems indications and EICAS messages. For further information on
Engine Backup Page refer to Section 2-10 - Powerplant and 2-4 - Crew
Awareness.
SYSTEM SELECT PAGE
The SYS SELECT Page allows the selection of COM 1 and COM 2
between Narrow and Wide bands.
MAINTENANCE PAGE
This page displays test results information depending on the type of
test that is being carried out (power on self-test or pilot activated self-
test). Two pages may be presented if a failure is detected, depending
on whether the failure is in the RMS or in one of the radios. This page
is not available in flight.
RMU NORMAL OPERATION
RMU SELF-TEST
On the ground, the RMS performs a self-test each time power is
applied after power off periods greater than 10 seconds. This test
monitors the primary and secondary radio buses as well as the
individual Radio Systems for proper operation. Each function test
status is displayed in its respective window.
Under normal conditions, the COM will be operational within 7 seconds
after power on and the remaining radio equipment units within 50
seconds. The test can be terminated by pressing the Test Button in the
RMU Bezel Panel.
If any bus or radio test parameter failure occurs, an associated error
message will be displayed on the test failure window, below the COM
and NAV windows. Radio System failures are displayed in the first
failure window and function failures in a second failure window. The
failure windows may be removed by pressing and holding the Test
Button. If the test is successfully completed the RMU will display the
RADIO Page with the same radio configuration prior to the last power
down.
Page Code
3 01
2-18-11
REVISION 31