KCMX INPUT AND OUTPUT— The KCMX
can receive ready digital (RD) data from up to eight
radar azimuth converters (RACs). The ENTER signal
indicates that the ready digital (RD) data is valid and
may be sampled and sent to the controlling computer.
The KCMX is capable of outputting data over four
digital output channels (DOCs) and receiving data from
four digital input channels (DICs). These channels can
be manually set to computer (COMPUTE) or peripheral
(PERIPH) formats. The KCMX can receive up to 60
status signals. The status signals’ conditions (0 or 1)
are inputted to the computer as two 30-bit status words.
The KCMX generates control signals based on
individual bits set in two control words received from
the controlling computer.
KCMX CONVERSIONS— The KCMX can
accept and convert inputs from up to 323-wire synchros
using 12 reference voltages. Two separate conversions
are performed for each input, one for the fine speed and
one for the coarse speed. When converting
single-speed synchro inputs, both conversions are
performed. However, the fine conversion is ignored
and the bits that apply to the fine conversion in the BAM
word are zeroed.
SWITCHBOARDS— Switchboards are used to
interconnect a ship’s systems. There are two major
types of switchboards: digital and analog.
DIGITAL SWITCHBOARDS— Digital switch-
boards primarily interconnect digital devices. There
are two types of digital switchboards: manual
switchboards and remotely controlled switchboards.
MANUAL SWITCHBOARDS— Manual switch-
boards are made up of variable configurations of
manually operated three-position and five-position
switches.
REMOTELY CONTROLLED SWITCH-
BOARDS— Remotely controlled switchboard
configuration changes are accomplished from one of
two computer switching control panels (CSCPs). The
CSCP generates control signals to position the linear
slide switches and receives status signals from the
switches to indicate current switch position.
DIGITAL FIRE CONTROL SWITCHBOARD
(DFCS)— The digital fire control switchboard (DFCS)
performs data routing, power monitoring, action cutout
(ACO) switching, and digital switching.
SHIP, SWITCHBOARD, AND CSCP
WIRING— All cables and wires used aboard a ship are
labeled with a specific code. Specific codes are used to
identify ship’s wiring, switchboard wiring, and CSCP
wiring. These codes are found on metal or plastic labels
on each end of the cable.
ANALOG SWITCHBOARDS— Analog switch-
boards receive control signals from the multiplexing
data converter to position the automatic junction rotary
(AJR) switches and provide status signals to indicate
switch status.
END-AROUND-TEST (EAT)— One of the
functions provided by both analog and digital
switchboards is the end-around-test (EAT). When
switches are set to the EAT position, the switchboard
routes the output of a device back to the same or similar
device as input data.
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