TM 1-1520-238-10 4-64 Change 4 l. Laser trigger – Release. CAUTION The DTV zoom FOV shall not be acti- vated for more than 2 minutes of contin- uous operation to prevent excessive ras- ter retention. Permanent damage may occur if it is engaged for more than 5 minutes continuously. m. Field-of-view select switch – Z. n. Repeat steps i. thru l. 2. FLIR. a. Sensor select switch – FLIR. b. Field-of-view select switch – N. c. FLIR – Adjust level fully counterclockwise. d. FLIR – Adjust gain mid-range. e. Laser trigger – Press and hold. f. Observe laser spot, and optimize FLIR. If la- ser spot is not visible, perform CUE Update Procedure, paragraph 4.31.7 a. g. BRSIT ENABLE switch – UP. Observe tracking gates capture laser spot. Continue to fire the laser until tracking gates disap- pear. If spot cannot be captured by tracking gates, perform manual boresight adjust- ment, paragraph 4.31.7 d. h. BRSIT ENABLE switch – CENTER. i. Laser trigger – Release. CAUTION The FLIR zoom FOV shall not be acti- vated for more than 2 minutes of contin- uous operation to prevent excessive ras- ter retention. Permanent damage may occur if it is engaged for more than 5 minutes continuously. j. Field-of-view select switch – Z. k. Repeat steps e. thru i. l. LSR switch – OFF. m. CPG ARM/SAFE switch – SAFE. n. PLT/GND ORIDE switch – OFF. 3. DVO a. Sensor select switch – DVO. b. Field-of-view select switch – N. c. Observe position of DVO crosshairs; if coin- cident with DTV reticle, go to step g, below. d. BRSIT ENABLE switch – DOWN. e. DVO BRSIT – Adjust DVO crosshairs into coincidence with DTV reticle. f. BRSIT ENABLE switch – CENTER. g. BRSIT TADS – OFF. h. ACQ SEL switch – FXD. i. SLAVE switch – Press, TADS returns to the fixed forward position. c. TADS Outfront Boresight. WARNING TADS Outfront Boresight validation and adjustment (if necessary) shall be per- formed prior to using the TADS FLIR im- agery for laser or weapons operations, after performing a cue update, a TADS component change or if the helicopter experiences an abnormal electrical shut- down. 1. Position helicopter on the ground over identified location for this procedure. 2. If on an approved laser firing range, fire laser to obtain range. Otherwise, enter manually the range from helicopter to the outfront boresight target. NOTE If the target is between 0.5 km and 1.5 km, the range entered on the DEK must be with- in 10 meters. If the target is between 1.5 km and 5 km, the range entered on the DEK must be within 50 meters. If the target is greater than 5 km, the range entered on the DEK must be within 1 km. 3. Observe the outfront boresight target in NFOV FLIR, adjust gain and level for optimum auto- tracker image. Engage IAT.