DeCrane Aerospace Audio International, Inc. LCD-9121-101-x Installation Manual
Document # 540365, Rev IR, 03/2008 Page 5 of 18
Connector J2 provides to the switch panel +28 VDC power and
ground input, serial data bus control, and unit ID strapping pins to
allow programming of multiple units.
2.4.4 Device addressing is accomplished via three (3) ID pins which
allow for a total of eight (8) monitors to be independently addressed
on the data bus.
3.0 Installation
3.1 Prior to installation, the following items should be considered:
3.1.1 During the design and layout of the aircraft cabin, careful
consideration of the location of this module is necessary. Some of
the items to be considered include:
•Space
•Available power supply
•Environmental conditions (temperature, humidity, etc.)
•Length of cable runs
3.1.2 The LCD-9121-101-x shall be installed to conform to the standards
designated by the customer, installing agency, and existing
conditions as to the unit location and type of installation.
3.1.3 If the adjustment switch (SP-LCD6) is to be mounted in the aircraft,
the following should be considered; the pigtail is 24 inches
(60.96 cm) in length ±1 inch (2.54 cm) and has 6-32 x 0.75 inch
mounting studs. Refer to Sections 5.0 and 6.2 for the adjustment
switch characteristics.
3.1.4 A shallow mounting depth makes this monitor ideal for bulkhead
use. The unit has four (4) 8-32 UNF-2B on the left and right sides,
two (2) on each side. In addition, the unit has eight (8) 8-32 UNF-
2B on the top and bottom, four (4) on each side. The minimum
depth should be no less than .30 inches, and the maximum depth
should be no more than .50 inches.
3.1.5 When mounting the unit to the aircraft’s frame, allow sufficient
space for mating connectors.
3.1.6 The maximum length of the connection to PC Graphic (VGA) input
is 15 feet.
3.1.7 This unit is capable of installation/mounting in any orientation
whether horizontal, vertical, inverted, or at an angle.
