RoyalTek REV-2000 - Manual (Page 15)

RoyalTek GPS Receiver REB-2000/REB-12R REV-2000 Operational Manual
11
(1) Trickle power: In TricklePower mode, the
power to is cycled periodically, so that it
operates only a fraction of the time.
REB-2100 has the default trickle power
parameters: OnPeriod: 300ms, Update
rate: 1 second. REB-12R2 does not
provide the trickle power feature.
(2) Push to fix: In Push-to-Fix mode, the
receiver is generally off, but turns on
frequently enough to collect ephemeris.
So that, upon user request, a position fix
can be provided quickly after power-up.
REB-2100 provides push to fix function
but it is disabled default. REB-12R2 does
not provide this function.
It provides the trickle power operation in
REB-2100 default. REB-12R2 doesn’t support
the trickle power now. To enable trickle power
mode from SiRFdemo.exe, please select the
“Action/Set TricklePower Parameters” like
following picture.
Then, it will show a “TricklePower parameters”
dialog for parameters setting. There are two
parameters of Trickle power that needs to be
set, “Update Rate and On Time”. The “Update
Rate” means the navigation update frequency.
For example, “1 sec” means output once per
second and “2 sec” means output once per 2
seconds. The “On time” means running time in
the output period. For example, “200 ms”
means the running time is 200 ms per
navigation update. The duty cycle of trickle
power is determined by setting of “Update Rate”
and “On Time”. For example, if the “Update
Rate” is 1 sec and “On time” is 200ms, the duty