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aircraft.
Permits reference sight selection by the CPG.
Deselects all lines-of-sight and stows sensors.
Selects the helmet mounted display as the reference LOS and permits slaving of
the TADS to the helmet LOS.
Selects TADS as the reference LOS.
Selects the IRIS missile as the reference LOS; growth position, not currently
active.
Allows the CPG to view TADS FLIR wide field of view with flight symbology. The
HMD helmet configuration is the only valid configuration for utilization of this
position.
Selects the helmet mounted display as the reference LOS. The HDU is active with
CPG weapons symbology only. TADS may be slaved to the helmet, however
imagery from the selected TADS sensor is not displayed.
TM 1-1520-238-10
Table 4-11. CPG Fire Control Panel Functions - continued
Control
ACQ SEL
CHAN SEL
MSL UPR/
LWR CHAN
LSR MSL
CCM
TGT/NAV
Position
FXD
TGT
NAV (-49)
NAV (-51)
GHS
MSL/SKR
TADS
Defines the fixed forward position.
Defines the selected target as the acquisition source.
Same as TGT position.
Defines FLY-TO as selected acquisition source.
CPG helmet LOS is defined as the acquisition source.
The Hellfire missile seeker angles define the acquisition LOS.
The TADS LOS is defined as the acquisition LOS. This mode is not active if the
sight selected is TADS.
PHS The pilot helmet LOS is defined as the acquisition LOS.
Functions the same as the pilot channel select switch.
Labels used on the CPG fire control panel for set-up of two missile channels. Once
a set-up has been made, the channel select switch is actuated either to upper or
lower establishing that code and quantity set-up as the priority channel; by
default, the other code and quantity set-up becomes the alternate channel.
LSR CODE
QTY
Specifies the alphabetic laser code designator assigned to that channel set-up.
Specifies the number of missiles per channel that are to be coded and brought to a
ready state at one time. A maximum of three missiles is permitted per channel at
one time.
Function
Enables cueing or slaving to selected acquisition LOS when the slave pushbutton
is actuated. Only the TADS may be slaved to a selected acquisition LOS, all others
receive cueing.
The LSR MSL CCM switch location lower center of the CPG HELLFIRE fire
control panel, provides HELLFIRE weapons system hardening in the true or up
position.
The LSR MSL CCM switch position is set during the sequence of operations in
which the code is loaded to a specific missile location.
In the absence of enemy countermeasures, the CCM switch shall remain in the
false or down position.
Numeric value in the window specifies the storage location of selected target
coordinate data. The range is 0-9.
The switch is inoperative.
Change 4 4-33
TM 1-1520-238-10
Table 4-11. CPG Fire Control Panel Functions - continued
Control
BRSIT
MUX
FCC/MUX
TADS LSR
CODE
FC SYM
GEN
IHADSS
TADS
Position
TADS
OFF
IHADSS
OFF
IRIS
PRI
SEC
ON
OFF
LST
LRF/D
LRF/D CCM
FLIR OFF
OFF
Function
Enables various sight or missile boresight modes.
Places the TADS in internal boresight mode.
Disables TADS internal boresight and returns to normal control.
Enables IHADSS boresight for the CPG and turns on the boresight reticle unit.
Disables all switch functions.
Enables boresight of IRIS missiles; growth position, currently inactive.
Specifies which bus controller will control the multiplex bus.
Specifies the fire control computer.
Specifies the backup bus controller. The normal position is PRI. In the event of
failure of the FCC, switching to the BBC will occur automatically.
FCC/MUX switch shall be left ON.
Enables power to the FCC.
Disables power to the FCC.
This index specifies the alphabetic laser code designation to be assigned to the
laser spot tracker.
This index specifies the alphabetic laser code designation to be assigned to the
LRF/D.
Enables the first pulse range circuit. CCM Off enables last pulse logic. If erratic
laser range readouts occur, enable the LRF/D CCM.
Turns on the fire control symbol generator. Required for symbology generation and
video switching on board the aircraft.
Turns on the IHADSS and activates the IHADSS display electronics unit.
Turns on the TADS and initiates TADS FLIR cooldown.
Powers TADS but does not cool down the FLIR; not normally used.
Disables all power to the TADS.
4-34 Change 3
　
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