Keyboard Displays; Keyboard Controls - Philips Allegiant LTC 8500 Series Instructions For Use Manual

Keyboard Displays

Monitor Display
The monitor display is a three-digit seven-segment
display that serves two purposes. One purpose is to
display the number of the monitor that the keyboard
is currently controlling. This monitor's camera
number appears in the camera display, and the pan
and tilt keys control camera movement if applicable.
The second purpose is to provide a prompt to a user
to log-on to the system if the log-on feature was
enabled by the system installer. Once the user has
logged on, the display reverts to the monitor number.
Camera Display
The camera display is a four-digit seven-segment
display. It shows the number of the camera being
viewed on the monitor that the keyboard is
controlling. However, there are three modes for this
display. The camera mode is the default, but when
the user pushes one of the numeric data keys, this
display shows the numeric keystrokes as they are
entered from the keyboard and also causes the
decimal point in the lower right hand side of the
camera display to light. If the keyboard remains
inactive for about five seconds, the camera display
will return to default mode and again display the
camera number. The third mode is for error display
(reference the Error Messages section of this
manual). When the user enters an erroneous key
sequence, the keyboard beeps and an error number
is temporarily displayed (approx. 2 seconds). If an
operator attempts to invoke a restricted function, the
camera number will be temporarily replaced with an
appropriate system error number. If an attempt is
made to access a monitor or remote device which
has been locked by a higher priority User, the
camera number will be temporarily replaced with an
appropriate error number, then the user number of
the operator who placed the lock will be briefly
displayed.
On-line Indication
If the camera and monitor number are displayed
upon power up, the keyboard is communicating with
the system. If the USER and OFF indicators are lit,
the log-on feature of the system has been enabled by
the system installer and the keyboard is waiting for a
user to log-on to the system before operation is
permitted. If only hyphens (dashes) appear in the
monitor display (the USER and OFF indicators are
not lit), the keyboard
communicating with the system.
is powered but not
Mode Displays
The Mode displays are various indicators that light
up within certain keys to show the keyboard status.
The keyboard will stay in a selected mode until all
necessary data have been entered or until the
system has timed out. The default mode is camera
mode.

Keyboard Controls

The descriptions below indicate the function of the
key in its own mode. A key may have other functions
when used in complex modes. See the appropriate
operation section.
Numeric Keypad
This keypad is used to enter numeric data. When the
first numeric key is pressed, the camera display will
become a data display, and indicate the numeric
keys pressed.
Digits 0 to 9 - The numeric digits are general
purpose keys used to enter numeric data. Any digit
except a leading zero will appear on the camera
display. The keyboard will only recognize four
numeric digits at a time. If the data entered is not
terminated in a command in about five seconds, the
display will clear and again show the camera
number.
CLEAR Key - The CLEAR key reinitializes the
keyboard. In some cases it can be pushed twice. If
there are numeric data in the camera display, the
first push clears this data and the second push
returns the keyboard to the camera mode. This
allows the user to clear incorrect data without leaving
the current mode. If there are no data in the camera
display, the first push clears the entire keyboard back
to the default state.
ENTER Key - The
commands. It resembles the 'enter' key on a
computer keyboard, and indicates the end of numeric
data entry. Holding this key when using the ON or
OFF functions will cause those functions to repeat
until the key is released.
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ENTER key terminates