Sandia Aerospace AIS200A-35 - Manual (Page 4)

1.1 Introduction
This Manual describes the installation of the AIS 200-35 and AIS 200A-35 Switching Modules. It is in-
tended for use by FAA certifi ed repair stations and original equipment manufacturers (OEM’s) to install
the units and includes both mechanical and electrical installation information. The installer should insure
that the Switching Modules are operating according to their intended function.
1.2 Product Description
The AIS 200-35 and AIS 200A are 20 pole signal level switching units for use with Nav systems that
share the aircraft HSI/CDI’s OBS functions. The contact switching rating is limited by the circuit board
track current capacity to 1.0 Amps. The AIS 200 and AIS 200A has a revisionary relay that selects the
LOC signal for display on the HSI/CDI whenever a LOC channel is selected in the NAV unit.
1.2.1 Product Variations
The Model AIS 200-35, Sandia Part Number AIS 200-35 is the original variation and uses 5 relays of
four poles each to provide the 20 poles of switching.
The Model AIS 200A-35, Sandia Part Number 306119-00 is a direct replacement for the AIS 200-35. It
uses 10 relays in a series/parallel arrangement to provide the same 20 poles of switching. The AIS 200A
addresses the obsolescence of the AIS 200-35 relays. While the mechanical package and installation of
the AIS 200A is identical to the AIS 200-35, there is a slight wight variation. See the physical Charac-
teristics for the weight of each unit.
1.3 Technical Characteristics
1.3.1 Physical Characteristics
AIS 200-35 AIS 200A-35
Length 5.13” 5.13”
Width 3.46” 3.46”
Height 1.20” 1.20”
Weight 0.45 lb. .50 lb
1.3.2 Electrical Characteristics
AIS 200-35 AIS 200A-35
Operating Voltage 28 Vdc 28 Vdc
Current 120 mA (All Relays Engaged) 175 mA (All Relays Engaged)
Max Operating Temp. -20oC to +55oC -20oC to +55oC
Max Operating Altitude 50,000 ft. 50,000 ft.
Contact Rating 1.0 A @30 Vdc 1.0 A @30 Vdc
1.4 Certifi cation
AIS 200-35 FAA-PMA
DO-160C Env. Cat. [A1D1]-CA(MN)XXXXXXZBABATZXXX
AIS 200A-35 FAA-PMA Pending
SECTION 2
INSTALLATION CONSIDERATIONS
1 306147 Rev A