Control Data Corporation CDC CC63X Hardware Maintenance Manual page 27

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TABLE 2-1. CONTROLS AND INDICATORS (CONTD)
CONTROL/INDICATOR FUNCTION
ERROR Indicator (Red)
PROGRAM 1, 2, 3
Indicators (Red)
Audible Alarm
Illuminates when a terminal subsystem
or mode-dependent error condition is
detected. It is controlled by a pro-
grammable bit. The ERROR indicator
is located at the front of the
tenninal.
These three indicators are under
program control, thus their
functions are program dependent.
The PROGRAM indicators are located
at the front of the terminal.
Provides a two-level (loud/soft
intensity) audible alarm signal.
Operation is under firmware control
and is also operator-parameter-bit
controlled. The following conditions
cause an audible alarm to occur:
• After power on or RESET has run
test 1
• Improper keyboard entries during
mode selection or parameter
selection
• Host code sequence
• Attempt to enter keyboard data
while the cursor is in a protected
position*
• Entry on keyboard while the key-
board is locked
•
If margin alert has been selected
1
in mode installation parameters, ,
when keyboard entries advance the ,
cursor to the 8th position fram ,
end of line or into the last line.'
*With tenninals having the enhanced firmware, the host can
enable automatic tabbing in CYBER mode which will not sound
the alarm for the above condition. Instead, the entered key-
board data is tabbed to the next unprotected position.
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