BendixKing KXP 756 - Manual (Page 21)

20
KFS 579A NAV/TACAN
Control Unit
Rotate the “VOL” control knob
clockwise from the “OFF” position. The
display will light.
Display Modes
Standby Entry
Two TACAN channels, two NAV
frequencies, or a mixed combination of
NAV frequency and TACAN channel
are displayed; one in the Active
display and the other in the Standby
display. The mode of the standby
display is changed from TACAN
channel to the NAV frequency or NAV
frequency to TACAN channel by
momentarily depressing the MODE
button. Select the desired TACAN
channel or NAV frequency in the
Standby display by rotating the tuning
knobs either clockwise or
counterclockwise. The larger knob will
change the 10's and 100's digits of a
TACAN channel or the MHz digit of a
NAV frequency if that mode is
selected. When changing the display
past the end of the frequency range (0
to 129 X or Y or 108.XX to 117.XX)
the display will rollover to the other
end of the frequency range. The small
knob will change the units digit for
TACAN channels of increments or
decrement in increments of 50KHz for
NAV frequencies. Rollovers exist for
the small knob between 0 and 9 X or Y
for TACAN channels and 0 and
.95MHz for NAV frequencies. The
small knob also selects X or Y
channels; with knob out, X & Y
channels are selected and with the
knob in X or Y channels are selected
depending on which was displayed
prior to pushing the small knob in. The
KHz tuning in NAV mode is not
affected by the “PULL Y” option.
To tune the receiver to the
desired channel or frequency, the
desired channel or frequency must
first be entered into the Standby
display, and then the Transfer button
must be pushed for less than 2
seconds. This will exchange the Acitve
and Standby displays. When the
displays are mixed combination of
NAV frequency and TACAN channel,
the act of transfering a NAV frequency
to the Active display will open a line on
the KNR 634 allowing bearing
information to come from the NAV
Receiver. The act of transfering a
TACAN channel to the Active display
will ground the same line on the KNR
634 allowing bearing information to
come from the KTU 709.
NAV/TAC
VOL
OFF
S
B
Y
PUSH
TST
PULL
Y
MODE
ACTIVE WINDOW
STANDBY WINDOW
ON/OFF/VOL/TEST
MODE BUTTON
PHOTOCELL
TRANSFER
BUTTON
FREQUENCY
CONTROL KNOBS
99
109
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x
y