曝光台 注意防骗
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b. To cage the currently selected position depress the CAGE switch or activate the menus and LOCK on the CAGE label. The TFU will cage to the selected position and the CAGE indicator appears in the mode position of the status bar.
4.6.4.7 Stow Mode. The stow mode is for storing the TFU prior to turning the power OFF. In stow mode the TFU is rotated to 180° azimuth, and +130° elevation to protect the windows. This mode is activated by the pilot as part of the normal power off sequence. To stow the TFU activate the menus and LOCK on the STOW label, or toggle the menu control switch to STOW. The system will rotate to the stow position, the azimuth and elevation rota-tions will be locked, and the STOW indicator is displayed in the mode position of the status bar.
4.6.5 MFD Adjustments. Adjustment of the MFD im-age is accomplished by .rst hooking the calibration (CAL) menu, moving the highlight bar to the GRAY-
4-22.2 Change 4
SCALE label, and LOCK to turn the grayscale on. This displays the varied grayscale across the top of the MFD screen. Turn the MFDBRT control until the bar on the far left is white and the bar on the far right is black, with intermediate bars being various shades of gray.
4.6.5.1 Image Filtering Operation. The image .lter-ing control activates the image .ltering function and adjusts it to a high, medium, or low setting. After hooking on the FLTR label on menu page 2, a sub-menu appears contain-ing HI, MED, LOW, OFF, and EXIT labels. Move the highlight bar to the desired label and toggle the HOOK switch to change the .lter setting. The setting is indicated in the status bar at the top to the screen. To exit the menus toggle the LOCK switch. To return to the main menu hook the EXIT label.
4.6.5.2 Symbology Controls. The SYM label when hooked displays a sub-menu with DAY, NIGHT, FULL, and DCLTR choices.
4.6.5.2.1 Daytime/ Nighttime Symbology. This al-lows the pilot to select a con.guration of displayed sym-bology at brightness levels suitable for daytime or night-time ambient light conditions. Day and night con.gurations are reprogrammable in the con.guration menu. These con-.gurations are accessed by hooking the SYM label on menu page 2. The selections are DAY and NIGHT. The current symbology selection is indicated by an asterisk next to the current label and the symbology indicator in the status bar. To change the current selection, move the highlight bar to the desired selection and toggle the HOOK or LOCK switch. HOOK leaves the symbology menu open and dis-plays the results on the screen. LOCK closes the menus and activates the selection.
4.6.5.2.2 Full/Decluttered Symbology. The FULL/ DCLTR symbology control allows the pilot to select a de-cluttered symbology con.guration which displays only the most essential symbology. The decluttered con.guration is reprogrammable by the pilot in the con.guration menu.
4.6.5.3 Video Difference Control. Video difference displays the difference between the live video and the fro-zen image. This allows the pilot to detect motion in the scene. To enable the video difference function move the highlight bar to the DIFF label in menu page 2 and HOOK it. The DIFF sub-menu appears, LOCK on the ON label and the difference function will be enabled. Toggling the FREEZE initiates the DIFF function. Toggling the FREEZE a second time returns the system to normal op-eration.
4.6.5.4 Calibration Controls. The calibration label when hooked activates a sub-menu (Figure 4-8) containing labels for setting azimuth and elevation gyro drift compen-sation, date/time, and for turning the display grayscale on and off.
4.6.5.4.1 HDHLD Response. HDHLD response is the response speed of the TFU position to aircraft movements. The response speed has a range from 0.0 to 3.0. This pa-rameter needs to be adjusted to match the characteristics of the aircraft and mission requirements. When set low, image vibration is reduced, but the TFU responds slower to inten-tional aircraft movements. When set high, the TFU re-sponds faster to intentional aircraft movements, but image vibration is increased.
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UH-60Q 直升机技术手册 直升机操作手册 1(132)
