COMMUNICATIONS-APPLIED TECHNOLOGY ICRI/2P, Инструкция по установке и эксплуатации

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Theory of Operation
The “2P” can provide a communications bridge, or link, between two public safety agencies with
otherwise incompatible radios; can quickly establish the link as a tactical situation rapidly unfolds;
and requires minimal resources to enable it initially, or to maintain its operation over many hours.
The 2P will remain fully operational for 30+ hours powered by an external “AA” battery pack (8 “AA
alkaline batteries), 10+ hours powered by the internal, rechargeable battery, and indefinitely when
powered by an AC source.
The 2P performs two primary functions:

Distributes the audio received from a two-way radio, or telephone, to a second radio also
connected to the 2P.

Utilizes this same incoming audio to “key” the other communications devices connected to the
ICRI.
The “radios” can be hand-held portables, vehicle or console radios , SPRINT/NEXTEL
“Direct Connect” phones or a combination. Land-line telephones, cell phones, STU, STE or
satellite phones can also be connected to the ICRI.
The ICRI-2P circuitry does not attempt to modify or digitally process the incoming audio, so that
unnecessary delays are not inserted into the audio transfer or “keying” processes. Radios, telephones
and/or recording devices connected to the ICRI are provided with the incoming audio, essentially in
real-time. An audio “buffer” preserves the first syllables of incoming audio processed through
“trunking” radio systems.
This version of the ICRI contains 2 circuits that key the radios connected to the ICRI; these circuits
are commonly referred to as “VOX” or “voice-activated switches.” Only the VOX directly connected
to the incoming audio is used to key each of the other radios simultaneously (all others are temporarily
disabled, to prevent a second “voice” from causing a disruption of communication).The ICRI uses
these circuits to perform other controlling functions as well.