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|  MIL-D-81347C(AS)
3.5.5
Keysets and Panels
3.5.5.1
G e n e r a l - This section describes the mechanical electrical
requirements of the following items:
( 1 ) Universal Keysets
( 2 ) Pilot Keyset
(3) ordnance Pane1 (Keyset)
( 4 ) Armament/Ordance Test Panel
Functional Description - The functional descriptions of these
3.5.5.2
items are included in the corresponding logic subunit description.
3.5.5.3
Operating Requirements
Universal Keysets - All Monfunction, Keyboard and Matrix Se-
3.5.5.3.1
lect switches shall have one of their two lampa normally lit (green filter). The computer controlled
lamps (except for PRO's) shall have an amber filter. AU lamps for PRO's shall be 718 subminiature,
flanged base. Lamps for Monofunction Keyboard and Matrix Select switches shall be 815 subminiature,
flanged base.
Power Supply - Each Universal Keyset shall contain its own power
3.5.5.3.1.1
supply which shall provide the DC voltages an currents required by all components of the Keyset
(including bias voltage for the lamp drivers and lamp driver/decoders).
The power supply shall not be damaged by current surges occur-
ring either at power-on (in addition to normally lit lamps, all computer controlled lamps may be lit
at power-on) or normal operation.
Lamp Intensity Control - Separate bank intensity controls shall be
3.5.5.3.1.2
provided to regulate the voltage applied to the lamps in bank 1 and bank 2 from 2.0 to 5.2 volts.
Under no circumstances shall the voltage applied to any lamp be greater than 5.2 volts. Bank 1 shall
consist of all Monofunction, Keyboard and Matrix Select switches; bank 2 shall consist of all PRO's
and Matrix switches.
Pilot's Keyset - All switches shall have one lamp normally lit
3.5.5.3.2
(green filter). The computer controlled lamps shall have amber filters.
Power Supply - The Pilot's Keyset shall contain its own power
3.5.5.3.2.1
supply which shall provide the DC voltages an currents required by all components of the Keyset
(including bias voltage for the lamp drivers. )
The power supply shall not be damaged by current surges occur-
ring either at power-on (in addition to normally lit lamps, all computer controlled lamps may be lit at
power-on) or normal operation.
3.5.5.3.2.2
Lamp Intensity Control - An intensity control shall be provided
to regulate the voltage applied to all lamps from 2.0 t05.2 volts. Under no circumstances shall the
voltage applied to any lamp be greater than 5.2 volts.
Ordnance Panel - All switches shall have one lamp normally lit
3.5.5.3.3
(green filter). The computer controlled status readout lamps shall have amber filters.
Power Supply - The Ordnance Panel shall contain its own power
3.5.5.3.3.1
supply which shall provide the DC voltage and currents required by all components of the panel (in-
cluding bias voltage for the lamp drivers and lamp driver/decoders).
313
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