Suunto D4i User Manual page 38

NOTE
To re-pair the transmitter with the new code and the Suunto D4i dive computer:
In the DIVE mode of the Suunto D4i, long-press the DOWN button to enter the
1.
DIVE settings. Enter the Tank Press Pairing menu (Refer to Section 5.9.3. Setting
the tank pressure pairing). Short-press the SELECT button to bypass the tank
pressure ON/OFF selection (the tank pressure transmission must remain ON).
In the next menu, a Code number is displayed. Clear the code by short-pressing
2.
the UP button (toggle from "Ok" to "Clear"), and press the SELECT button.
Short-press the MODE button to exit the DIVE settings.
3.
Take the Suunto D4i unit close to the transmitter (the system must be pressurized
4.
to above 15bar/300 psi). The dive computer displays the received new code
number and then start displaying the transmitted cylinder pressure. The wireless
transmitter indicator (flash symbol) is displayed every time the Suunto D4i receives
a valid signal.
NOTE
To pair on the new transmitter code, the Suunto D4i code must
be cleared first.
In order to save battery energy, the transmitter enters power
saving mode with slower data transmission rate if the tank pres-
sure remains unchanged for more than five (5) minutes. The
transmitter continues transmitting with the saved code when any
pressure change is measured.
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