Ocean Technology Systems MilCom Surface Station 6000S, Руководство пользователя

Страница: 14 / 32

O
TS MIL
CO
M
S
URF
ACE
8
Making Adjustments
The following instructions will explain how and why to change your options and
settings of the MilCom Surface Station. The table below lists the factory default
options. The unit will remember Channel and Scrambler settings between uses,
but will default to Speaker on and Squelch On when powered on.
Option Default setting
Channel B
Speaker On
Squelch On
Scrambler Off
Squelch
To activate our software driven, automatic Squelch simply press the button
labeled Squelch. When the Squelch is on the LED ring around the button will il -
luminate. Squelch will default to on when unit is powered up. The Squelch option
is designed to help eliminate background noise. There are a lot of noises in the
spectrum used for Wireless Communications such as Marine biological noise,
Mechanical noise etc. Noise can come from numerous sources such as boat en-
gines, compressors, generators, jet skis, shrimp and even rain can affect wireless
communications. Anything that produces sound can be heard though the MilCom
Surface Station 6000S if the signal is in the ultrasonic frequency.
Think of Squelch as a gate that allows only the strong signal of other divers or
the surface station through to your Earphone/ Microphone Assembly. If the water
is particularly “noisy” you may want to turn the Squelch on. Note that when turned
on, you may be limiting a weak signal from a diver or surface station if they are
“shadowed” by a physical obstruction or merely distant, effectively limiting the
range. If the water is particularly quiet and/or you need to hear a potentially weak
signal from a distant diver/surface station, then you may want to turn the Squelch
off.
Correct Squelch settings are vital to maintaining communications to divers.
Scrambler
To switch in and out of Scrambler mode, press the scrambler button. Scrambler
will default to off when the unit is powered on. If the scrambler is on, the LED ring
around the button will illuminate. Scrambling enables divers to have more secure
communication while the option is on. Divers with this feature enabled on their
MilCom Surface Station diver communication units will be able to hear unscram -
bled speech, while divers without this feature enabled will hear unintelligible
transmissions, providing an additional layer of secure voice communications.
Scrambler setting is saved when unit is powered down and will remain the same
when unit is powered on.