![Honeywell PRIMUS 1000 Pilot'S Manual Download Page 309](http://html.mh-extra.com/html/honeywell/primus-1000/primus-1000_pilots-manual_148416309.webp)
PRIMUS
r
1000 Integrated Avionics System
A28--1146--112--00
C--37
PRIMUS
â
II Radio System
Controls and Annunciations
The tuning backup control head controls and indicators shown in figure
C--17, are described below.
Tuning Backup Control Head Controls and Annunciations
Figure C--17
D
Remote Tune Annunciator
-- The remote tune annunciator is only
active when the system is strapped for NAV only or COM only
tuning. It is on when the radio is tuned from some source other than
what the unit is tuned to.
D
Tuning Cursor (
"
)
-- The tuning cursor is a lighted triangle that is
controlled by the transfer key. It indicates which frequency can be
changed by the tuning knobs.
D
Navigation Audio (NAV AUDIO) On Annunciator
-- When
displayed, this annunciator indicates that NAV audio has been selected
on.
D
Emergency (EMRG) Mode Annunciator
-- The EMER
annunciator indicates when the tuning backup control head has
been placed in the emergency mode. This annunciation is not
related to the emergency COM frequency of 121.5.
D
Squelch (SQ) Annunciator
-- When displayed, this annunciator
indicates the squelch is opened by the SQ switch.