Function selector – BendixKing CNI 5000 User Manual

Page 14

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13

FUNCTION SELECTOR

The Function Selector on the right side

of the transponder portion of the CNI 5000
is used to select the different modes of
operation of the Mode S transponder.
The different modes are as follows:

OFF- The unit is not energized. When the
unit is turned from “OFF” to some other
mode, the unit will display the installer-pro-
grammed aircraft address and maximum
airspeed according to the following
sequence: (Does not apply to the
ATCRBS-only Systems):

a.) The “FL” window will display “ xe
“AA1”AA1” and the ident window will dis-
play the first 4 digits of the unique aircraft
address for 2 (two) seconds.

b.) The “FL” window will display “ xe
“AA2”AA2” and the ident window will dis-
play the last 4 digits of the unique aircraft
address for 2 (two) seconds.

c.) The “FL” window will display the lower
limit and the ident window shall display the
upper limit of the preprogrammed maxi-
mum airspeed range for 2 (two) seconds.
The airspeed range displayed is one of the
following six: 0-75, 75-150, 150-300, 300-
600, 600-1200, and greater than 1200.

SBY- The unit is energized, but is inhibited
from replying to any interrogation. “SBY” is

annunciated on the display in this mode.
The altitude display is disabled.

TST- (Test) The unit will illuminate all seg-
ments of the display for at least four sec-
onds. A series of tests are performed inter-
nally that check the integrity of the Mode S
system.

When a squitter error occurs, the

transponder is considered inoperative and
message will be reported on the altitude
display.

Whenever an EEPROM error is detected,
the message “F02” signifying internal EEP-
ROM failure, or “F03” signifying external
EEPROM failure, is reported in the altitude
side of the display.

When the unit detects a hardware fail-

ure that prevents the unit from operating as
a transponder, “F04” is displayed in the alti-
tude window.

If the unit displays any of these failure

messages, it should be taken in for service.

If the unit has no errors, it remains in

the test mode.

All replies are disabled during TEST.

GND- (Ground) The unit inhibits ATCRBS
Mode A & C interrogations but will reply to
all valid Mode S interrogations. The ID
4096 code is displayed on the right side of
the display and the altitude on the left.
“GND” is annunciated on the display in this
mode.

Note: An optional remote “air/ground”
switch may be installed on a landing gear
strut that will keep the Mode S unit in the
GND mode until airborne. The unit can

XPDR 1

PUSH

VFR

SBY

OFF

GND

TST

ON

ALT

R

IDT

FL

XPDR 1

PUSH

VFR

SBY

OFF

GND

TST

ON

ALT

R

IDT

FL

XPDR 1

PUSH

VFR

SBY

OFF

GND

TST

ON

ALT

R

IDT

FL

XPDR 1

PUSH

VFR

SBY

OFF

GND

TST

ON

ALT

R

300

IDT

XPDR 1

PUSH

VFR

SBY

OFF

GND

TST

ON

ALT

IDT

XPDR 1

PUSH

VFR

SBY

OFF

GND

TST

ON

ALT

ALT ON
GND SBY

R

8888

IDT

FL

XPDR 1

PUSH

VFR

SBY

OFF

GND

TST

ON

ALT

IDT

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