Post-Installation Configuration & Checkout
GNS 480 (CNX80) Installation Manual560-0982-01 Rev A
3-15
VS RATE (Vertical Speed Rate)
This field is the typical vertical speed for climb/descent of the aircraft. The settable number determines
the rate of climb the GTX 33/330 assumes as liftoff for operational functions. The range is 100 feet per
minute to 9999 feet per minute, and is set to 500 fpm at the factory.
SQUAT SWITCH
The squat switch field may be set to either YES or NO. Selecting YES in this field sets the GTX 33/330
to use the squat switch to determine lift off. Selecting NO sets the GTX 33/330 to use Automated
Airborne Determination from other sources.
NOTE
It is important that installations without a squat switch input to the GTX 33/330 be
configured with
NO
in the
SQUAT SWITCH
field. Otherwise, the GTX 33/330 can
incorrectly report the air/ground state over the Mode S data link.
SQUAT SENSE
The squat sense field may be set to either HIGH or LOW. If the squat switch field is set to YES, the squat
sense field is used to define the state of the squat switch input which is recognized as being on the ground
(weight-on-wheels).
DELAY TIME
This is the number of seconds the aircraft must be on the ground before the AUTO STANDBY feature
automatically switches to standby mode when the airborne source is the squat switch. It has a range of 0
(zero) seconds to 99 seconds, with the default set to 24 seconds.
MODE S ADDRESS (GTX 33/330 ONLY)
NOTE
It is VERY important to enter the Mode S address correctly in the GTX 33/330.
There are two ways to enter the Mode S address into the GTX 33/330, as shown below:
SELECTION DESCRIPTION
US TAIL #
N-Registration Number
HEX
Hexadecimal code address
For US-registered aircraft, select US TAIL # and then enter the aircraft tail number in the adjacent field.
Optionally, select HEX and enter the hexadecimal address directly.
FLIGHT ID (GTX 33/330 ONLY)
There are three ways to enter the Flight ID into the GTX 33/330, as shown below:
SELECTION DESCRIPTION
SAME AS TAIL
If address is a US registration number, FLT ID can be the same.
POWER UP ENTRY
Enter FLT ID every time the unit is turned on in normal mode.
CONFIG ENTRY
Enter FLT ID in configuration mode only.
Summary of Contents for GNS 480
Page 1: ...GNS 480 CNX80 Color GPS Nav Com Installation Manual September 2004 560 0982 01 Rev A...
Page 10: ...Table of Contents viii 560 0982 01 Rev A GNS 480 CNX80 Installation Manual NOTES...
Page 30: ...General Information 1 20 560 0982 01 Rev A GNS 480 CNX80 Installation Manual NOTES...
Page 126: ...Periodic Maintenance 6 2 560 0982 01 Rev A GNS 480 CNX80 Installation Manual NOTES...
Page 150: ...Appendix D Interconnect Diagrams D 2 560 0982 01 Rev A GNS 480 CNX80 Installation Manual NOTES...
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