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voice/data communication for the HF radio system (AN/
ARC-200). Power to operate the TSEC/KY-100 is supplied
by the No. 2 DC bus through the HF KY-100 circuit
breaker located on the No. 2 PDP.
3-2-26. Controls, Indicators, Connectors and Function
(TSEC/KY-100–, Z-AVH) (fig. 3-2-9)
CONTROLS/
INDICATOR
FUNCTION
MODE Switch Six position rotary switch
used to select one of the operational
modes.
PT Plaintext mode. Allows reception
or transmission of unencrypted
analog voice.
EB Emergency Back-up mode.
Uses the emergency back-up
key to encrypt voice for transmission
or reception.
CT Ciphertext mode. Allows
transmission of encrypted
voice or data and reception
of encrypted or unencrypted
voice or data, and non-cooperative
terminal rekeying.
RK Remote Keying mode. Permits
KY-100 to perform automatic
and manual rekey operations.
OFFLINE Disables communications
and gives access to the system
of menus used to select
mode settings, self-test features,
and filling the KY-100
with crypto-variables.
Z ALL
(PULL)
Zeroize mode. Erase all cryptographic
data stored in the
KY-100 except the Emergency
Back-up Key.
CIK Receptacle Interfaces with a Cryptographic
Ignition Key which is
needed to enable all secure
voice and data communications.
This function is currently
disabled.
DSPL/OFF BRT
Control
Two-function rotary switch
which controls the on/off status
and backlight intensity of
the LCD display.
PNL/OFF BRT
Control
Two-function rotary switch
which controls the on/off status
and backlight intensity for
the overall front panel.
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 selected
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 common
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 purpose
Tape Reader.
Three Button
Keypad
Momentary pushbutton
switches active in both OFFLINE
and on-line modes.
Used to enter and exit submenus,
activate the selected
mode, select fields,and to
scroll through menus and options.
INIT Initiate switch. In the OFFLINE
mode activates the
displayed menu mode and
provides entry into submenus.
In on-line modes (CT,
RK, EB,PT), it selects the display
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 available
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 online
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 operational
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 receiving.
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 control
switch is in the Emergency
Backup (EB) position.
Alphanumeric
Display (6)
Provides prompts, messages,
and mode indications.
PT Annunciator (7) Displayed when KY-100 is
processing plaintext voice.
Key Symbol (8) Displayed when menu system
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.
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