ATG429EBPOperationManual
3‐5
June4,2015
Rev.A2
(9) PARITY Indicator
IN RX MODE:
LED Indicates parity (ODD or EVEN) of word
presently displayed.
IN TX MODE:
LED Indicates selected transmit parity.
(10) HEX/ENG Switch
Allows operator to select hexadecimal or
engineering unit display and entry of data.
(11) TX/RX Key
Allows operator to select whether the system is in
transmit or receive mode of operation for display
and entry of data. After selection of the TX/RX
key, initial display indicates the number of labels
being transmitted, received, trapped, or filtered.
SCROLL keys should then be used for manual
stepping through transmitter or receiver slots.
TX/RX LED indicators above display will indicate
current mode of operation.
(12) RX SPEED Switch
Allows operator to select HI (100 kbps) or LO
(12.5 kbps) receiver speed.
(13) DATA ENTRY Switch
Allows operator to enter various data in
hexadecimal or engineering formats. Keys 0 - 9
and the `.' and `-' keys are valid while in ENG
mode. Keys 0 - F are valid while in HEX mode.
(Hex mode will be forced regardless of switch
position if the label is currently undefined by
ARINC specs. or is a label not supported in ENG
mode. (Discrete data, Maintenance Data, etc.).
Keys 0 - 7 are valid for LABEL entry since all
labels are entered in octal format. The `0' and `1'
keys allow clearing and setting, respectively, bits
of discrete bit screens (SDI, SSM, RF
management labels, frequency discretes and
individual bit screens, etc.) and turning various
modes on and off (e.g. slew ALTERNATE).
Several keys have secondary functions while not
in the EDIT mode.
(14) LAB/DAT Key
Allows operator to select either LABEL mode or
DATA mode of display. LABEL mode displays
octal number and engineering definition of labels
being transmitted or received. DATA mode allows
viewing of data of the currently selected label
being transmitted or received.
(15) EDIT/DEL Key
Allows operator access to the data entry mode. If
in the data entry mode, the DEL keys allows
correction of errors during data entry.
NOTE: While in TRAP mode the current slot
displayed may be edited using normal editing
procedures as an alternative to using the scroll
keys.
(16) ON/OFF Key
Turns unit ON and OFF
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