AUDIO INTERNATIONAL, INC.
3/98
7
Document #540068, Rev. IR, Model No.: RCP-020-x & RCP-021-40x
If damage has occurred during shipping, a claim must be filed with AI
within 24 hours and a “Return Request Authorization Number” must be
obtained from AI. Refer to the front cover of this manual for address and
telephone number of Audio International. Repackage the unit in its
original packaging materials and return it to AI following instructions
given by the AI representative. If no return is necessary, retain the
packing materials for storage or reshipment if necessary.
2.3
Cautions & Warnings
2.3.1 All audio connections to the RCP should be shielded and properly
grounded at the source. Perform a pin-to-pin check to confirm that all
wires terminate in their proper location. It is important to do a power and
ground check on the pin connections. Ensure that power and ground are
applied only where required.
2.3.2 DO NOT connect or disconnect the unit while power is applied.
2.3.3 DO NOT remove any factory-installed screws. Damage to the unit may
result and void any warranties.
2.4
Wiring Requirements
2.4.1 The installing agency must supply and fabricate all external cables. The
length and routing of external cables must be carefully studied and
planned before attempting installation of the equipment. Allow adequate
space for installation of cable and connectors. Avoid sharp bends and
placing cables near aircraft control cables. Maintain a minimum clearance
of three (3) inches from any control cable. If wiring is run parallel to
combustible fluid or oxygen lines, maintain a separation of six (6) inches
between the lines.
2.4.2 All power and ground wires must be 24 AWG minimum. All audio lines
require twisted, shielded cable with the cable shields grounded. Power
ground wires must be grounded within twelve (12) inches of the unit. All
wires must be in accordance with MIL-W-22759 or equivalent. Twisted,
shielded cable must be in accordance with MIL-W-27500 or equivalent.
Protect power wires with circuit breakers or fuses located close to the
electrical power source bus.
2.4.3 The RCP-020-40x and RCP-021-40x are designed to interface with other
AI equipment via the proprietary RS-485 data bus. This is a bi-directional
data bus that allows multiple units to be connected simultaneously. The
lines are daisy-chained between units with 120-ohm resistors installed at
both ends of the wiring harness. Cable designed specifically for data bus
use with 120-ohm nominal impedance should be utilized. Contact Audio
International for recommended cables.
