TM 1-1510-225-10
3C-13
(8) HDG – Latching push-button switch used
to select a line (white) display.
(9) HOME – Momentary push-button switch
used to position designator on VOR symbol, with tick
pointing to magnetic north.
(10) RCL – Momentary push-button switch
used to recall the first item skipped during checklist
operation. Not enabled in INDEX es.
(11) SKIP – Momentary push-button switch
used to Skip and not check any item during checklist
operation. Not enabled in INDEX es.
(12) LINE – Momentary push-button switch
used to advance from one line to next during checklist
operation.
(13) PAGE – Momentary push-button switch
used to advance from one page to the next during
checklist operation.
(14) RAD – Left-right (CCW-CW) action
switch used to radially rotate designator about VOR
display.
c. Display Modes.
(1) Radar Returns (WXD). Setting the
control unit rotary switch to WXD disconnects the
interface computer from the indicator and allows the
display of normal radar returns.
The
system
can
be
turned
on
or
off
independently of an operating radar. Selection of the
radar (WXD) mode at the control unit is a default
selection (i.e., it disconnects the system from the radar
system so that the radar can operate in normal
fashion).
The system supplies no indication to an auxiliary
device that it has been selected or rejected. With
certain exceptions, the auxiliary equipment operates
only in response to its own controls, whether or not its
outputs are displayed. Except for the display, the
radar operates in whatever mode has been selected
for it on the indicator control panel, regardless of
switch selection on the control unit. Only the display is
affected by control unit switches; however, the radar
will override a system input if the target-alert mode is
active and a target enters the target-alert sector.
When the target-alert sector clears, the radar Indicator
resumes the display selected at the control unit.
(2) Navigation. The navigation function
allows
the
operator
to
display
radar
returns
Superimposed
with
navigational
symbols
and
navigational data from external sources.
1. Rotary Selector Switch
2. NAV 1
3. DES IN – DES OUT
4. NAV 2
5. CS 1
6. CS 2
7. DES NAV 1 – DES NAV 2
8. HDG
9. HOME
10. RCL
11. SKIP
12. LINE
13. PAGE
14. RAD
Figure 3C-7. Data NAV Control
