A tape read or write operation starts when the
modes are also available. The single entry mode displays
EOOW/LU computer sends a 16-bit command word to
the latest entry and allows the operator to scroll to view
the AN/USH-26(V). The tape unit performs the action
older data. The tabular mode displays up to 25 demand
and follows up with feedback status. The feedback is a
display selections produced on six dates at a particular
status word reporting on the command word's
time. The operator views an individual 25-entry set as a
operational success within the tape unit. Feedback status
log page and uses the keyboard to progress page to page.
after each command operation is issued. When the status
The editing function allows the operator to adjust the
word is error free, the system is assured that satisfactory
current date and time, alarm parameters, and shaft
command completion has resulted. If a status error
revolution counter reset.
exists and may result in a local tape error alarm,
Bubble Memory Unit
additional operations can be entered.
When the EOOW/LU is first energized, the operator
EOOW/LU Computer
must install bubble memory cassettes in the drive unit.
The computer's start-up program will then cause the
Embedded in the EOOW/LU, the AN/UYK-44(V)
console's operating program software on the cassettes
controls and monitors the MCS by using the DMS. The
to be loaded into the computer's memory. Anytime the
AN/UYK-44(V) is a general-purpose self-contained
computer is rebooted with the cassettes installed, the
computer. The acronym AN/UYK-44(V) is defined as
operator must repeat the loading operation.
follows:
Each bubble memory for the MCS has unique
console software programming. When software
AN Army/Navy
changes are required, a new AN/USH-26 master tape
cartridge is provided. The operator inserts the new
U General utility
cartridge in tape drive O. Bubble memory cassettes are
then loaded into the EOOW/LU bubble memory drive
Y Data processing
unit. The EOOW/LU console transcribes the new master
K Computing
tape program to the cassettes. New programs are set in
motion after the cassettes are installed in their MCS
44 44th machine designated as AN/UYK
console and the console's initialization and bootstrap
procedure is run.
V Various component groupings available
Bell Log Printer
The computer has a set of hardware modules
contained in an air-cooled card cage. It also has a cooling
The bell log printer is installed in the EOOW/LU
fan, a control and maintenance panel, and power
console front panel. It is a thermal style printer. The
supplies. The basic modules are standard electronic
printing head elements are heated and pressed against
modules (SEMs), built to military standards
the heat-sensitive paper. The EOOW/LU computer
(MILSTDs). The control and maintenance panel is
program issues the printer control and data print
located on each console for convenient start-up and
commands.
maintenance purposes.
The computer is the principle unit in the interchange
Signal Data Recorder-Reproducer Set
of information for the EOOW/LU. It works with the
The AN/USH-26(V) signal data recorder-
DMS to accomplish these tasks. Each MCS console has
reproducer set is panel mounted. It is a cartridge tape
an AN/UYK-44(V) computer that may monitor the
drive unit configured for four tape drives. The tape
propulsion plant, electric plant, auxiliary machinery,
drives are numbered drive 0 through 3. Only two tape
and firemain and hazard detection systems. The control
and alarm input capabilities, however, will vary within
drives are used, however, and no hardware is installed
the program functions assigned to each console
in drives 2 and 3. Drive 0 is a read only drive and drive
1 is a write only drive. There is a magnetic tape driver
computer. The computer enters a bootup process at
power turn-on. (It may also be rebooted from the control
in the computer program. The driver interfaces with the
set to provide data writing and data program readings.
panel whenever this is required.) During the boot
The driver also rewinds the tape and reads the set's status
process, the operating program is loaded from the
register.
bubble memory cassettes installed in a tape drive unit in
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