Apeks NS158000, Owner'S Manual, Page: 21 / 96

DIVE FEATURES
Doc. 12-7969 Doc. 12-7969 r09 (9/22/22)
21
© Apeks (2022)
The DSX cannot effectively receive a signal when it is held out to the sides (as displayed above) of the TMT or
held at distances greater than 0.91 m (3 ft) in front of the TMT. Best reception is achieved when the DSX is within
less than 0.91 m (3 ft) of the TMT.
When installed into the high pressure ports of the regulator first stages, the TMTs must be positioned so that they
face horizontally outward from the tank valves.
NOTE: Installing the transmitter vertically (parallel to the tank) could place the DSX wrist unit in a blind
spot, increasing the incidence of lost transmission.
NOTE: Using multiple transmitters could increase the incidence of transmitter signals stepping on
each other (the DSX wrist unit not receiving all active transmitter signals). Best practice is not to ac-
tivate (pressurize regulators/transmitters) simultaneously. If you suspect the signals are stepping on
each other, purge the transmitter not being received by the DSX and allow the transmitter to power off
and retry.
NOTE: Consider labelling your transmitters to avoid any confusion, in terms of DSX assigned transmit-
ter ID, when using multiple transmitters for a dive.
PROXIMITY OF THE TMTS (TRANSMITTERS) AND DSX
The DSX can be used with the Apeks Transmitter (P/N NS119115). The TMTs emit low frequency signals that
radiate out in semicircular patterns parallel to the length dimension of the TMT. A coiled antenna inside the DSX
wrist unit receives the signals when it is positioned within a zone parallel to or at a 45 degree angle to the TMT as
illustrated.