SUUNTO VYTEC - Manual (Page 16)

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2.4.2. Pairing and Code Selection
In order to receive wireless data the transmitter and the Vytec wrist unit
need to be paired. During the pairing procedure the transmitter and
wrist unit select a common transmission code.
The transmitter turns on when the pressure exceeds 15bar [218 psi]
and it then starts sending pressure data together with a code number.
During the pairing procedure the Vytec stores the above mentioned
code number and starts displaying pressure values that are received
with that code. This coding procedure inhibits data mix up from other
divers also using the Vytec’s transmitter.
When there is no stored code the Vytec will display “SETC” and receive
with lowered sensitivity from a very short distance only (Fig. 2.6 a). By
taking the Vytec close to the transmitter it will store the received code
and start receiving with full sensitivity and display data received with
this code only. The code is held stored as long as the time keeping
display is on, or until the cylinder pressure goes below 10 bar [145 psi],
or by the user manually erasing the code.
To pair the transmitter and the wrist unit:
1. Make sure that the transmitter is properly attached to the regulators
HP port and that the regulator is properly attached to the cylinder.
2. Ensure that the Vytec is turned on, an that the wireless integration
is enabled in the Vytec’s settings (HP set on, see chapter 4.3.3.3).
The Vytec should display “SETC” in the lower left corner.
3. Slowly open the cylinder valve fully and pressurize the regulator.
The transmitter will start transmitting when the pressure exceeds
15bar [218 psi].
4. Take the Vytec wrist unit close to the transmitter. The Vytec will now
shortly display the selected code number and then start displaying
the transmitted cylinder pressure. A lightning symbol will be dis-
played every time the Vytec receives a valid signal.
The user can change the code by reducing the pressure to less than 10
bar [145 psi] and then increasing the pressure above 60 bar [870 psi].
This means the transmitter code will automatically change when you
change to a fresh cylinder. This can also be used if your dive buddy has
the same code and you want to change the code.