your position is our focus
4
N with On/Off Time
In
FXN
with
ff
Time
the
receive will
only
stay
on
for
T_on
a
r
an
initial
fix
has
been
a
d
switch
to
Off
St
ards.
If
signal
whe
eiver
wakes
up,
th re
acquire
a
q
.
If
t
ccessful
the
rece
ate
for
T_acq
.2.7.8
FX
contrast
to
using
out
On/O
r
fte
chieved
an
ate
for
T_off
afterw
there
is
no
GPS
n
the
rec
e
ceiver
will
try
to
fix
as
usual
for
T_ac
his
is
not
su
iver
goes
to
Off
St
_off.
signal OK
T_on
T_off
T_on
T_off
no signal
GPS Signal
lost
GPS
T_reacq
T_acq
T_acq
on
off
on
off
on
off
on
System
state
signal
T_acq_off
T_on
T_acq
time
off
First
Fix
First
Fix
First
Fix
T_off
Figure 57: FXN
ff Time, GPS signal is lost in Full Power State
If
the
signal
is
lost
during
the
on
q
,
if
this
is
not
successful
es
to
Off
State
for
ceiver
goes
to
Off
State
for
.
After
this
time
the
GPS
will
start
to
acquire
SV
as
a
normal
start
up.
t
will
never
happen,
because
T_on
overrules
T_reacq
.
with On/O
time,
the
receiver
starts
to
reacquire
the
SV
for
T_reac
the
receiver
go
T_reacq_off
.
If
T_on
is
reached
before
T_reacq
is
expired,
the
re
T_off
Note
If
T_reacq
is
longer
than
T_on
a
reacquisition
timeou
off
on
signal OK
no signal
off
on
time
GPS
signal
System
state
GPS Signal
lost
T_off
T_acq
T_acq_off
T_acq
Figure 58: FXN with On/Off Time, GPS signal is lost in Full Power State
GPS
Modules
-
System
Integration
Manual
(SIM)
(incl.
Reference
Design)
Receiver
Description
GPS.G4-MS4-05007-A1
Page 70
