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3-2-26.  Controls, Indicators, Connectors and Func- tion (TSEC/KY-100, Z-AVH)
3-2-29.  Key Loading Procedures

TM-1-1520-240-10 Army CH-47D Heilcopter (EIC:RCD) Manual
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TM  1-1520-240-10 3-2-24            CONTROLS/ INDICATOR FUNCTION PRESET Switch Rotary selector switch which controls unit operating power and settings which are stored in memory. OFF Removes power from KY-100. MAN Manual position which allows operating modes to be se- lected using both OFFLINE and online menu system. 1 thru 6 Six separate preset modes which can only be set up in the OFFLINE mode. FILL Connector Used to load cryptographic keys through the use of com- mon fill devise such as KYK-13/TSEC Electronic Transfer Devise, KYX-15/ TSEC Net Control Devise, AN/CYZ-10 Data Transfer Devise (DTD), or the KOI-1//TSEC General pur- pose Tape Reader. Three Button Keypad Momentary pushbutton switches active in both OF- FLINE and on-line modes. Used to enter and exit sub- menus, activate the selected mode, select fields,and to scroll through menus and op- tions. INIT Initiate switch. In the OF- FLINE mode activates the displayed menu mode and provides entry into subme- nus. In on-line modes (CT, RK, EB,PT), it selects the dis- play field to be change. Up Arrow () Switch In the OFFLINE mode, it is used to scroll through menus from top to bottom. In on-line modes (CT, RK, EB, PT), it is used to scroll through avail- able options for the display field being changed. Right Arrow () Switch In the OFFLINE mode, it is used to scroll through menus from bottom to top. In the on- line modes (CT, RK, EB, PT) it is used to select the display field to be changed. CONTROLS/ INDICATOR FUNCTION Simultaneous () Used to exit a submenu. Display, LCD Back-lighted Liquid Crystal Display (LCD) indicates op- erational status, operator prompts and messages. 3-2-27. Display Annunciators/Fields (TSEC/ KY-100, Z-AVH).  (fig. 3-2-10) CONTROLS/ INDICATOR FUNCTION TX Annunciator (1) Displayed when KY-100 is transmitting. RX Annunciator (2) Displayed when KY-100 is re- ceiving. Wb Annunciator (3) Displayed when KY-100 is in the Wideband (VINSON) configuration. Nb Annunciator (4) Displayed when KY-100 is in the Narrowband (ANDVT) configuration. Eb Annunciator (5) Displayed when MODE con- trol switch is in the Emergen- cy Backup (EB) position. Alphanumeric Display (6) Provides prompts, mes- sages, and mode indications. PT Annunciator (7) Displayed when KY-100 is processing plaintext voice. Key Symbol (8) Displayed when menu sys- tem is locked. D Annunciator (9) Displayed when in Data mode. V Annunciator (10) Displayed when in Voice mode. Rate Display (12) 3-character display indicates voice or data rate. 3-2-28.  Turn-On Procedure. When the KY-100 is turned on, tests are automatically performed to determine the equipment’s operating sta- tus. The results of these tests will be presented on the display. Also, a Cld START message will be displayed. a.  Cold start turn-on. (Initiated if no traffic encryption key (TEK) is contained in the KY-100). (1) Turn on the KY-100 by turning the PRESET switch to the MAN position. (2) The KY-100 will initiate a self -test. The dis- play reads Cld STRT and then PSH INIT.







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