Faq (Frequently Asked Questions) - Sigma ROX 8.1 Mode D'emploi

8 IMpORTAnT nOTES/TROUBlEShOOTInG/FAQ

8.5 FAQ (FREQUEnTly ASkED QUESTIOnS)

can I change the batteries myself?
All parts on the SIGMA ROX 8.1 are designed
with a battery compartment that makes it
possible for the user to change the battery.
When doing so, please make sure that the
sealing ring is always correctly positioned
before closing the battery compartment.
can another person with another bicycle
computer/heart rate monitor cause
interference?
The digital transfer system is encoded.
This almost completely rules out mutual
interference between two units. When
synchronizing the receiver with the
transmitter, make sure that there are
no other SIGMA ROX units nearby.
how long does the battery last in the
transmitter, receiver?
The battery life depends on how often the
unit is used and on the use of the light
manager. As a rule, all the parts on the
SIGMA ROX 8.1 – receiver and all 3
transmitters – are designed so that the
battery lasts at least 1 year (based on
1 hour's use per day).
Is the transmission system compatible
with the DTS system?
The transmission system on the SIGMA
ROX 8.1 has been developed separately from
the existing DTS system and therefore is not
compatible.
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The altitude changes even though I remain
at the same location, why?
The altitude measurement on the SIGMA
ROX 8.1 is based on a barometric altitude
measurement. As the barometric pressure
changes continually, this can lead to a change
in the current altitude, even though you are
not moving. However, the SIGMA ROX 8.1
is equipped with a system that freezes the
current altitude when the unit goes into
sleep mode. We can therefore guarantee
a constant, current altitude, provided the
unit is not regularly moved.
Why do I always have to calibrate the
current altitude?
As we use the barometric pressure to
determine the current altitude, the continual
changes in the current air pressure lead
to changes in the current altitude. To
compensate for these continual changes
and to achieve a current altitude reading that
is accurate to within 1 meter, a reference
altitude should be entered in the SIGMA
ROX 8.1 before every ride. Inputting the
reference altitude is called calibration.