0004 00TM 1-6625-724-13&P0004 00-2Figure 1. CADU Display and Keypadb. The Control and Display Unit, see figure 1.1. Power ON/OFF. The OFF position opens the circuit and shuts off the electrical power supply to the unit.The ON position provides electrical current to the unit when the power source is connected.2. Function Keys. The four function keys (F1, F2, F3, and F4) provide the operator with the ability to selectfunctions from within each menu. Functional keys are also used to enter alphanumerics in tail numbermenus.3. Arrow Keys. Four arrow keys (UP, RIGHT, DOWN, and LEFT) on the lower right corner of the CADUmove an inverse video cursor to highlight the various selections that the user will be making. Executionof the highlighted menu selection is accomplished by pressing the DO key.4. DO Key. The DO key, located on the right-hand side of the CADU front panel, executes the operatorselected menu item.5. QUIT Key. In the DISPLAY mode, pressing theQUIT key will step the user back through previouslydisplayed screens to return to the beginning of the selections. In the MEASURE mode, the QUIT key isused to abort or cancel whatever operation is being conducted.6. LAMP Key. The LAMP key controls the backlighting of the CADU display. When externally powered,pressing the LAMP key will toggle the lamp OFF or ON, which will provide display lighting in darkenedenvironments. When the CADU is operating on battery power the LAMP key must be pressed and heldfor display lighting.LCD DisplayReal Time Clock (H:M:S)Return or goback throughmenu (see text)Power ON/OFFswitchON/OFF switch tobacklight screenand keypad fornight usageAlters LCDcontrastGo forward orinsert a menuselectionOptional remotecontrol displayenableArrow keys toposition inversevideo cursorProvides operatorinstructions for current taskPrints screen display if connectedto a printer, otherwise storesscreen dataF1, F2, F3, F4soft functionkeys for multiple functions(see text)Keypad to enternumerical dataChange sign fordata entry
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