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 for approximately 2 hours, or until the cylinder pressure goes below 10 bar [145 psi]. The set code can also be manually erased by the user.
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 displayed every time the Vytec receives a valid signal.
WARNING:
In case there are several divers using Vytecs with wireless trans- mission always ensure that all divers are on different codes before starting the dive.
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