1–3 CONTROLS AND INDICATORS

TM 1–1520–238–T–1 Change 5 1–3 1–3 CONTROLS AND INDICATORS 1–3 1–3 CONTROLS AND INDICATORS. a. Operator interaction with FD/LS is provided via the data entry keyboard (DEK) (fig. 2–49) (ADC) or control display unit (CDU) (fig. 2–49.2) (ADD). b. In both pilot and CPG crew stations, visual indications are conveyed to the operator through master caution/warning panels (fig. 2–9 and 2–36), crew station caution/warning panels (fig. 2–20 and 2–40) and any video monitors available in that particular crew station, i.e., heads down display (HDD), helmet display unit (HDU), heads out display (HOD), and video display unit (VDU) (fig. 2–10). 1–4 DISPLAY INDICATIONS. Displays indicating TEST IN PROGRESS, system/LRU status (GO/NO-GO) and location, and any required operator action (prompting) are visible on the appropriate display monitor. a. Indicators on the caution/warning panels light to show a failure in a specific flight critical or mission essential system, or provide caution and advisory information. b. System/LRU NO-GOs are displayed in the CPG station optical relay tube (ORT) (fig. 2–34) HDD and HOD, and HDU. c. Video identical to what is viewed in the CPG crew station is available in the pilot crew station, if selected on the VDU and/or HDU. NOTE CPG HOD displays can be viewed on the HDD and HDU. The operator has the option of selecting the appropriate and convenient monitor for viewing of the FD/LS displays.