9
When
using
dual
batteries,
use
the
following
wiring
diagram
as
a
guide.
RRC3
Operational
Modes
The
RRC3
‐
mini
has
several
distinct
modes
throughout
the
course
of
its
operation
during
flight
and
recovery.
These
modes
of
operation
are
identified
by
the
function
of
the
piezo
and
the
LED,
and
the
specific
phase
of
flight.
Power
Up
and
Pre
‐
Launch
Modes
Power
‐
up
Initialization
Mode
When
power
is
first
applied
to
the
unit,
it
will
provide
a
continuous
5
‐
second
beep
to
indicate
it
has
been
switched
on.
During
this
5
‐
second
time
period,
the
RRC3
is
looking
for
a
tap
of
the
“Program”
button
(invoking
the
DIP
Switch
Operations
Mode)
The
LED
will
remain
on
continuously
during
the
Power
‐
up
Initialization
Mode.
Baro
History
Initialization
Mode
After
the
Power
‐
up
Initialization
mode,
the
unit
goes
through
a
10
‐
second
baro
initialization
start
‐
up
delay.
The
LED
will
flash
on
and
off
every
2
seconds
while
in
this
mode.
This
delay
period
allows
barometric
stabilization
and
establishes
an
initial
barometric
history.
The
RRC3
also
looks
for
a
“Host
Connection”
message
from
a
host
PC
computer
(attempting
to
connect
in
Host
or
Simulation
Modes).
These
operations
are
covered
in
subsequent
mDACS
User
Manual.
POST
Mode
(Power
On
Self
Test)
Once
a
barometric
history
is
established,
the
RRC3
performs
several
POST
checks
to
validate
the
integrity
of
all
sensors
and
to
check
the
current
ambient
environmental
conditions
(pressure
and
temperature).
If
there
are
any
detected
system
warnings
or
faults,
or
conditions
that
fall
outside
of
specified
ranges,
the
altimeter
enters
a
POST
Fault
Code
loop,
where
it
repeatedly
reports
the
specific
fault
that
it
encountered.
The
RRC3
is
unable
to
fly
until
the
fault
or
warning
is
corrected.
POST
Fault
Codes
are
preceded
by
a
very
distinct
warning
tone
(7
very
quick
low
beeps),
followed
by
the
beeping
and
flashing
of
the
specific
fault
code.
