SUUNTO D9 - Manual (Page 39)

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display is faded or weak, the battery may be too low to ope-
rate the dive computer and battery replacement is recommen-
ded.
NOTE! For safety reasons the backlight cannot be activated
when the low battery warning is indicated by the battery sym-
bol.
The optional wireless pressure transmitter sends out a lowbat
(LOBT) warning when its battery voltage is getting low. This
is shown intermittently instead of the pressure reading (see
chapter 5.3, Fig 5.30). When you get this warning the pressu-
re transmitter battery needs to be replaced.
5.1.3. DIVING AT ALTITUDE
The dive computer can be adjusted both for diving at altitude
and also to increase the conservatism of the mathematical nit-
rogen model.
When programming the instrument for the correct altitude,
you need to select the correct Altitude Mode according to
Table 5.1. The dive computer will adjust its mathematical mo-
del according to the entered altitude mode, giving shorter no-
decompression times at higher altitudes (see Section 10.2,
Table 10.1. and 10.2.).
Fig 5.5. Surface mode. Depth
and dive time are zero.
Fig. 5.6. Low Battery War-
ning. Battery symbol indica-
tes that the battery is low and
battery replacement is recom-
mended.