Amron 8225-HP, Инструкция по эксплуатации

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OPERATING PROCEDURES
SIMULCOM – WHAT, WHY AND HOW ? 8.10
Simulcom is a communications system designed from the “ground-up” to take advantage of the
current “state of the art” in semiconductor technology and to provide superior diver hard wire
communication.
First, the advantages and then an explanation of What, Why, and How.
1.
285% more signal is obtained from the divers microphone, (using your existing 8 ohm
microphone) than the maximum attainable signal on 2-wire mode!
2. No cumbersome push to talk required!
3. No special diver communication wire required!
4. Diver hears himself talk resulting in clear and concise speech!
5. Diver to diver communication without having to operate any controls. Just like a telephone!
These advantages are real and can be readily demonstrated. The system is simple, easy to
operate, and easy to trouble shoot (in fact, easier than 2-wire once you understand what’s
happening).
SIMULCOM pays off in good communication, which after all these years is still a goal some have
yet to achieve. Better communication means higher production, safer diver conditions, and less
down time.
Now that we have made these claims, allow us to explain why and how. First, let’s define some
basic industry terms so that we can all start from the same point.
1.
“2-Wire is used almost exclusively in the diving industry. It is technically defined as a single
communication path, a minimum of 2 wires. Normally, the diver is the priority path (tender
listens to diver).Signal reversing is accomplished by pushing the ”Push to talk" switch
(diver hears tender).Generally, most diver comm cables have 4 wires i.e., “Army surplus
comm-cable”. Most often the wires are twisted together to create a pair, this is still a 2-
wire system. The tying together is done for redundancy.
2.
“4-Wire” communication is defined as a dual communication path -- a signal path (a pair of
wires) for up-link as in 2-wire and a separate signal path (a pair of wires) for downlink. This
allows voice communications to go in both directions at the same time.
3.
A common example of “4-wire” like communications is the telephone. A telephone system
that required a push to talk would be antiquated today. Another example is a system called
“Round-Robin”. “Round-Robin” is a step in the right direction, however, only a half step. It
has several advantages and some disadvantages which we will get into later.
Remember SIMULCOM and round robin are not the same.
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