LSA800-001 Loud Speaker Amplifier
Installation and Operation Manual
February 23, 2015 Rev: 1.00
Page 2-2
ENG-FORM: 805-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.
CAUTION:
Use shielded cable exactly as shown and ground as indicated. Installation can
be severely degraded by incorrect wiring and shielding.
Precautions are necessary when external signals, such as intercom, radio or
recorders are used. The high gain of the amplifier requires care to prevent
feedback or crosstalk. Ground loops and stray currents in the input line
must be eliminated.
Bundle and route the Speaker Output wires separately from
low level Audio Input lines.
2.3.3
Cabling and Wiring
All wire shall be selected in accordance with the original aircraft manufacturer's Maintenance Instructions
or AC43.13-1B Change 1, Paragraphs 11-76 through 11-78. Unshielded wire types shall qualify to MIL-
W-22759 as specified in AC43.13-1B Change 1, Paragraphs 11-85, 11-86, and listed in Table 11-11. For
shielded wire applications, use Tefzel MIL-C-27500 shielded wire with solder sleeves (for shield
terminations) to make the most compact and easily terminated interconnect. Follow the interconnect
drawing in Section 2.7 as required.
Allow 3" from the end of the shielded wiring to the shield termination to allow the connector hood to be
easily installed. Refer to the interconnect drawing in Section 2.7 for shield termination details. Note that
the hood is a "clamshell" hood, and is installed after the wiring is complete. Aircraft harnessing shall
permit the unit to be removed for easy access to all adjustments.
Maintain wire segregation and route wiring in accordance with the original aircraft manufacturers
Maintenance Instructions.
Reference the Interconnect drawing for wire sizing specifications. Check that the ground connection is
clean and well secured, and that it shares no path with any electrically noisy aircraft accessories such as
blowers, turn and bank instruments or similar loads. Power to this unit must be supplied from a separate
circuit breaker or fuse (fast blow), and not attached to any other circuit breaker without additional
protection. Verify that the selected circuit breaker size and wire gauge are adequate for the installation
using the techniques specified in AC43.13-1B Change 1, Paragraphs 11-47 through 11-51 and 11-66
through 11-69.
2.3.4 Post-Installation
Checks
Ensure all connectors are tight and the mechanical installation is sound.
2.3.4.1
Voltage/Resistance Checks
Do not connect the LSA800-001 to the wiring harness until the following conditions are met.
Check the following:
a) Check P101 and P201, pin A1 for +28 Vdc relative to ground.
b) Check P101 and P201, pin A4 for continuity to ground (less than 0.5
:
).
c) Check P101 and P201, pins A2 and A3 for no connection to ground (open).
