____________________________________________________________________
Page 5-92
G1000 System Maintenance Manual
Rev. A
190-00903-00
g.
IRDA
―
Indicates status of GDU 104X IrDA infrared port. Used for Garmin testing, it is not
activated at this time.
h.
BKUP CAPS
―
Indicates status of the Backup Capacitor Test. A green box indicates the test
passed, a red box indicates it failed.
'DISCRETE' Window:
GDU System ID 1
GDU System ID 2
GDU System ID 3
Display Mode
Black Black Green MFD
Black Black Black
PFD
#1
Green Black Black PFD
#2
a.
RVRSNRY MODE 1, 2
―
Displays the current status of the reversionary modes.
Reversionary Mode 1 is activated by the GMA 1347 reversion button. Reversionary Mode 2
is activated by a second GMA 1347, if installed. Reversionary 1 input is a ground on Pin 58,
reversionary 2 input is a ground on Pin 15.
b.
PULSE PER SEC 1, 2
―
Displays status of GPS time synchronization inputs (from GIA
63/GIA 63W) to the GDU. Used for Garmin testing, not useful for troubleshooting.
c.
TEST, DEMO MODE SELECT
―
A green box indicates Pin 53/54 is grounded. These
inputs should have a black box, if either box is green check for connector miswiring or a bent
pin.
d.
FPGA
―
Displays the condition of the GDU FPGA processor. If it does not pass the unit may
not initialize.
e.
SYS ID 1, 2, 3
―
Displays the current system ID assigned to the display. Green indicates that
the System ID pin is strapped to ground. Black indicates that the System ID pin is left ‘open’
and not strapped to ground. (See Table below) PFD #2 is not used in certian aircraft.
f.
REMOTE OFF
―
Allows the display to control power of a remote system. Not used in any
installation at this time.
