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BENDIX/KING KLN 90B
Rev 5, April/2003 10521I05.TDC Page 1-7
Table 3-9 KLN 90B Signal Outputs
Table 3-10 KLN 90B NAV Flag Output
OBI SYNC,
CLOCK, & DA-
TA:
Honeywell Serial Data containing bearing to the active waypoint
RS 232 OUT: The RS232 output is designed to interface with certain ARNAV ELTs
and certain moving map displays, storm scopes, and Shadin fuel
flow systems (refer to Appendix A)
WPT ALERT:
(Waypoint Alert)
OPEN = Inactive
LOW = Active (Output can sink up to 250 mA
MSG:
(Message)
OPEN = Inactive
LOW = Active (Output can sink up to 250 mA)
APPROACH
ACTIVE:
OPEN = Inactive
LOW = Active (Output can sink up to 250 mA
APPROACH
ARM:
OPEN = Inactive
LOW = Active (Output can sink up to 250 mA
CDI Output: Output is capable of driving up to five 1 KW parallel loads, Output
drive range: $300 mV ($ 150 mV full scale)
30 mV per nautical mile (Full scale = 5 nautical mile)
150 mV per nautical mile (Full scale = 1 nautical mile) 500 mV per
nautical mile (Full scale = .3 nautical mile)(Voltage at pin 22 is rela-
tive to voltage at pin 25)
The CDI output can manually be selected to the sensitivity of one of
the three sensitive modes listed below.
Enroute: 5, 1 or .3 nautical mile scale factor selectable
Approach Arm: 1 or .3 nautical mile scale factor selectable
Approach: .3 nautical mile scale factor only
Flag Pulled out
of view:
350 to 900 mV
Flag in view: < 50mVOutput capable of driving up to five 1 KW parallel loads
Nav Super Flag
Output:
Valid = >18 V in 28 VDC aircraft installations; >10 V in 14 VDC air-
craft installations Invalid = <3.5 V in all installations while sinking 1
mA max. Output can source up to 250mA
OBS Resolver
Out:
Nominal output frequency = 450 Hz Nominal unloaded peak ampli-
tude = 6 V Output drive capability = 40mA