Installation guide

Appendix C: Wiring and Electrical Connections
22-20 SkyView System Installation Guide - Revision R
AMC 20-24 Compliance
The TT21 or TT22 transponder can be connected to the following GPS units to form the basis of
an AMC20-24 compliant ADS-B installation:
 Freeflight 1201 & 1204 WAAS/GPS Sensors
 NexNav MINI & NexNav MAX WAAS/GPS Sensors
 Garmin GNS 400W/500W series
For installations seeking certification to AMC 20-24 or other applicable standards, additional
compliance information is available on request from Trig Avionics Limited.
Automatic Air/Ground Determination
The SV-XPNDR-261/262 can report ADS-B surface and airborne messages. This can be
accomplished via a squat switch input that is designed to be used with an automatic air/ground
switching device, or via automatic detection. These options are fully explained in the SV-
XPNDR-261/262 Installation, Configuration, and Testing Section of this guide.
SV-COM-T8 Environmental Qualification Form
Nomenclature:
TY91L VHF radio
Part Number: 00882-00-01
ETSO: 2C169a
Manufacturer:
Trig Avionics Limited
Address:
Heriot Watt Research Park, Riccarton, Edinburgh, Scotland,
EH14 4AP
Conditions
DO-160F
Section
Description of Conducted Tests
Temperature and Altitude
4.0
Equipment tested to Categories A2, C1
Low temperature ground survival
4.5.1
-55°C
Low temperature short-time
operating
4.5.1
-40°C
Low temperature operating
4.5.2
-20°C
High temperature operating
4.5.4
+70°C
High temperature short-time
operating
4.5.3
+70°C
High temperature ground survival
4.5.3
+85°C
Loss of Cooling
4.5.5
Cooling air not required
(+70°C operating without cooling air)
Altitude
4.6.1
55,000 feet
Decompression
4.6.2
8,000 to 55,000 feet in 15 seconds
Overpressure
4.6.3
-15,000 feet
Temperature Variation
5.0
Equipment tested to Category B
Humidity
6.0
Equipment tested to Category A
Operational Shocks
7.2
Equipment tested to Category B
Crash Safety
7.3
Equipment tested to Category B type 5
Vibration
8.0
Aircraft zone 2; type 3, 4, 5 to category S level M, type 1 (Helicopters) to
category U level G